(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
	typeof define === 'function' && define.amd ? define(['exports'], factory) :
	(factory((global.echarts = {})));
}(this, (function (exports) { 'use strict';

// (1) The code `if (__DEV__) ...` can be removed by build tool.
// (2) If intend to use `__DEV__`, this module should be imported. Use a global
// variable `__DEV__` may cause that miss the declaration (see #6535), or the
// declaration is behind of the using position (for example in `Model.extent`,
// And tools like rollup can not analysis the dependency if not import).

var dev;

// In browser
if (typeof window !== 'undefined') {
    dev = window.__DEV__;
}
// In node
else if (typeof global !== 'undefined') {
    dev = global.__DEV__;
}

if (typeof dev === 'undefined') {
    dev = true;
}

var __DEV__ = dev;

/**
 * zrender: 生成唯一id
 *
 * @author errorrik (errorrik@gmail.com)
 */

var idStart = 0x0907;

var guid = function () {
    return idStart++;
};

/**
 * echarts设备环境识别
 *
 * @desc echarts基于Canvas，纯Javascript图表库，提供直观，生动，可交互，可个性化定制的数据统计图表。
 * @author firede[firede@firede.us]
 * @desc thanks zepto.
 */

var env = {};

if (typeof wx !== 'undefined') {
    // In Weixin Application
    env = {
        browser: {},
        os: {},
        node: false,
        wxa: true, // Weixin Application
        canvasSupported: true,
        svgSupported: false,
        touchEventsSupported: true
    };
}
else if (typeof document === 'undefined' && typeof self !== 'undefined') {
    // In worker
    env = {
        browser: {},
        os: {},
        node: false,
        worker: true,
        canvasSupported: true
    };
}
else if (typeof navigator === 'undefined') {
    // In node
    env = {
        browser: {},
        os: {},
        node: true,
        worker: false,
        // Assume canvas is supported
        canvasSupported: true,
        svgSupported: true
    };
}
else {
    env = detect(navigator.userAgent);
}

var env$1 = env;

// Zepto.js
// (c) 2010-2013 Thomas Fuchs
// Zepto.js may be freely distributed under the MIT license.

function detect(ua) {
    var os = {};
    var browser = {};
    // var webkit = ua.match(/Web[kK]it[\/]{0,1}([\d.]+)/);
    // var android = ua.match(/(Android);?[\s\/]+([\d.]+)?/);
    // var ipad = ua.match(/(iPad).*OS\s([\d_]+)/);
    // var ipod = ua.match(/(iPod)(.*OS\s([\d_]+))?/);
    // var iphone = !ipad && ua.match(/(iPhone\sOS)\s([\d_]+)/);
    // var webos = ua.match(/(webOS|hpwOS)[\s\/]([\d.]+)/);
    // var touchpad = webos && ua.match(/TouchPad/);
    // var kindle = ua.match(/Kindle\/([\d.]+)/);
    // var silk = ua.match(/Silk\/([\d._]+)/);
    // var blackberry = ua.match(/(BlackBerry).*Version\/([\d.]+)/);
    // var bb10 = ua.match(/(BB10).*Version\/([\d.]+)/);
    // var rimtabletos = ua.match(/(RIM\sTablet\sOS)\s([\d.]+)/);
    // var playbook = ua.match(/PlayBook/);
    // var chrome = ua.match(/Chrome\/([\d.]+)/) || ua.match(/CriOS\/([\d.]+)/);
    var firefox = ua.match(/Firefox\/([\d.]+)/);
    // var safari = webkit && ua.match(/Mobile\//) && !chrome;
    // var webview = ua.match(/(iPhone|iPod|iPad).*AppleWebKit(?!.*Safari)/) && !chrome;
    var ie = ua.match(/MSIE\s([\d.]+)/)
        // IE 11 Trident/7.0; rv:11.0
        || ua.match(/Trident\/.+?rv:(([\d.]+))/);
    var edge = ua.match(/Edge\/([\d.]+)/); // IE 12 and 12+

    var weChat = (/micromessenger/i).test(ua);

    // Todo: clean this up with a better OS/browser seperation:
    // - discern (more) between multiple browsers on android
    // - decide if kindle fire in silk mode is android or not
    // - Firefox on Android doesn't specify the Android version
    // - possibly devide in os, device and browser hashes

    // if (browser.webkit = !!webkit) browser.version = webkit[1];

    // if (android) os.android = true, os.version = android[2];
    // if (iphone && !ipod) os.ios = os.iphone = true, os.version = iphone[2].replace(/_/g, '.');
    // if (ipad) os.ios = os.ipad = true, os.version = ipad[2].replace(/_/g, '.');
    // if (ipod) os.ios = os.ipod = true, os.version = ipod[3] ? ipod[3].replace(/_/g, '.') : null;
    // if (webos) os.webos = true, os.version = webos[2];
    // if (touchpad) os.touchpad = true;
    // if (blackberry) os.blackberry = true, os.version = blackberry[2];
    // if (bb10) os.bb10 = true, os.version = bb10[2];
    // if (rimtabletos) os.rimtabletos = true, os.version = rimtabletos[2];
    // if (playbook) browser.playbook = true;
    // if (kindle) os.kindle = true, os.version = kindle[1];
    // if (silk) browser.silk = true, browser.version = silk[1];
    // if (!silk && os.android && ua.match(/Kindle Fire/)) browser.silk = true;
    // if (chrome) browser.chrome = true, browser.version = chrome[1];
    if (firefox) {
        browser.firefox = true;
        browser.version = firefox[1];
    }
    // if (safari && (ua.match(/Safari/) || !!os.ios)) browser.safari = true;
    // if (webview) browser.webview = true;

    if (ie) {
        browser.ie = true;
        browser.version = ie[1];
    }

    if (edge) {
        browser.edge = true;
        browser.version = edge[1];
    }

    // It is difficult to detect WeChat in Win Phone precisely, because ua can
    // not be set on win phone. So we do not consider Win Phone.
    if (weChat) {
        browser.weChat = true;
    }

    // os.tablet = !!(ipad || playbook || (android && !ua.match(/Mobile/)) ||
    //     (firefox && ua.match(/Tablet/)) || (ie && !ua.match(/Phone/) && ua.match(/Touch/)));
    // os.phone  = !!(!os.tablet && !os.ipod && (android || iphone || webos ||
    //     (chrome && ua.match(/Android/)) || (chrome && ua.match(/CriOS\/([\d.]+)/)) ||
    //     (firefox && ua.match(/Mobile/)) || (ie && ua.match(/Touch/))));

    return {
        browser: browser,
        os: os,
        node: false,
        // 原生canvas支持，改极端点了
        // canvasSupported : !(browser.ie && parseFloat(browser.version) < 9)
        canvasSupported: !!document.createElement('canvas').getContext,
        svgSupported: typeof SVGRect !== 'undefined',
        // works on most browsers
        // IE10/11 does not support touch event, and MS Edge supports them but not by
        // default, so we dont check navigator.maxTouchPoints for them here.
        touchEventsSupported: 'ontouchstart' in window && !browser.ie && !browser.edge,
        // <http://caniuse.com/#search=pointer%20event>.
        pointerEventsSupported: 'onpointerdown' in window
            // Firefox supports pointer but not by default, only MS browsers are reliable on pointer
            // events currently. So we dont use that on other browsers unless tested sufficiently.
            // Although IE 10 supports pointer event, it use old style and is different from the
            // standard. So we exclude that. (IE 10 is hardly used on touch device)
            && (browser.edge || (browser.ie && browser.version >= 11))
        // passiveSupported: detectPassiveSupport()
    };
}

// See https://github.com/WICG/EventListenerOptions/blob/gh-pages/explainer.md#feature-detection
// function detectPassiveSupport() {
//     // Test via a getter in the options object to see if the passive property is accessed
//     var supportsPassive = false;
//     try {
//         var opts = Object.defineProperty({}, 'passive', {
//             get: function() {
//                 supportsPassive = true;
//             }
//         });
//         window.addEventListener('testPassive', function() {}, opts);
//     } catch (e) {
//     }
//     return supportsPassive;
// }

/**
 * @module zrender/core/util
 */

// 用于处理merge时无法遍历Date等对象的问题
var BUILTIN_OBJECT = {
    '[object Function]': 1,
    '[object RegExp]': 1,
    '[object Date]': 1,
    '[object Error]': 1,
    '[object CanvasGradient]': 1,
    '[object CanvasPattern]': 1,
    // For node-canvas
    '[object Image]': 1,
    '[object Canvas]': 1
};

var TYPED_ARRAY = {
    '[object Int8Array]': 1,
    '[object Uint8Array]': 1,
    '[object Uint8ClampedArray]': 1,
    '[object Int16Array]': 1,
    '[object Uint16Array]': 1,
    '[object Int32Array]': 1,
    '[object Uint32Array]': 1,
    '[object Float32Array]': 1,
    '[object Float64Array]': 1
};

var objToString = Object.prototype.toString;

var arrayProto = Array.prototype;
var nativeForEach = arrayProto.forEach;
var nativeFilter = arrayProto.filter;
var nativeSlice = arrayProto.slice;
var nativeMap = arrayProto.map;
var nativeReduce = arrayProto.reduce;

// Avoid assign to an exported variable, for transforming to cjs.
var methods = {};

function $override(name, fn) {
    // Clear ctx instance for different environment
    if (name === 'createCanvas') {
        _ctx = null;
    }

    methods[name] = fn;
}

/**
 * Those data types can be cloned:
 *     Plain object, Array, TypedArray, number, string, null, undefined.
 * Those data types will be assgined using the orginal data:
 *     BUILTIN_OBJECT
 * Instance of user defined class will be cloned to a plain object, without
 * properties in prototype.
 * Other data types is not supported (not sure what will happen).
 *
 * Caution: do not support clone Date, for performance consideration.
 * (There might be a large number of date in `series.data`).
 * So date should not be modified in and out of echarts.
 *
 * @param {*} source
 * @return {*} new
 */
function clone(source) {
    if (source == null || typeof source != 'object') {
        return source;
    }

    var result = source;
    var typeStr = objToString.call(source);

    if (typeStr === '[object Array]') {
        if (!isPrimitive(source)) {
            result = [];
            for (var i = 0, len = source.length; i < len; i++) {
                result[i] = clone(source[i]);
            }
        }
    }
    else if (TYPED_ARRAY[typeStr]) {
        if (!isPrimitive(source)) {
            var Ctor = source.constructor;
            if (source.constructor.from) {
                result = Ctor.from(source);
            }
            else {
                result = new Ctor(source.length);
                for (var i = 0, len = source.length; i < len; i++) {
                    result[i] = clone(source[i]);
                }
            }
        }
    }
    else if (!BUILTIN_OBJECT[typeStr] && !isPrimitive(source) && !isDom(source)) {
        result = {};
        for (var key in source) {
            if (source.hasOwnProperty(key)) {
                result[key] = clone(source[key]);
            }
        }
    }

    return result;
}

/**
 * @memberOf module:zrender/core/util
 * @param {*} target
 * @param {*} source
 * @param {boolean} [overwrite=false]
 */
function merge(target, source, overwrite) {
    // We should escapse that source is string
    // and enter for ... in ...
    if (!isObject$1(source) || !isObject$1(target)) {
        return overwrite ? clone(source) : target;
    }

    for (var key in source) {
        if (source.hasOwnProperty(key)) {
            var targetProp = target[key];
            var sourceProp = source[key];

            if (isObject$1(sourceProp)
                && isObject$1(targetProp)
                && !isArray(sourceProp)
                && !isArray(targetProp)
                && !isDom(sourceProp)
                && !isDom(targetProp)
                && !isBuiltInObject(sourceProp)
                && !isBuiltInObject(targetProp)
                && !isPrimitive(sourceProp)
                && !isPrimitive(targetProp)
            ) {
                // 如果需要递归覆盖，就递归调用merge
                merge(targetProp, sourceProp, overwrite);
            }
            else if (overwrite || !(key in target)) {
                // 否则只处理overwrite为true，或者在目标对象中没有此属性的情况
                // NOTE，在 target[key] 不存在的时候也是直接覆盖
                target[key] = clone(source[key], true);
            }
        }
    }

    return target;
}

/**
 * @param {Array} targetAndSources The first item is target, and the rests are source.
 * @param {boolean} [overwrite=false]
 * @return {*} target
 */
function mergeAll(targetAndSources, overwrite) {
    var result = targetAndSources[0];
    for (var i = 1, len = targetAndSources.length; i < len; i++) {
        result = merge(result, targetAndSources[i], overwrite);
    }
    return result;
}

/**
 * @param {*} target
 * @param {*} source
 * @memberOf module:zrender/core/util
 */
function extend(target, source) {
    for (var key in source) {
        if (source.hasOwnProperty(key)) {
            target[key] = source[key];
        }
    }
    return target;
}

/**
 * @param {*} target
 * @param {*} source
 * @param {boolean} [overlay=false]
 * @memberOf module:zrender/core/util
 */
function defaults(target, source, overlay) {
    for (var key in source) {
        if (source.hasOwnProperty(key)
            && (overlay ? source[key] != null : target[key] == null)
        ) {
            target[key] = source[key];
        }
    }
    return target;
}

var createCanvas = function () {
    return methods.createCanvas();
};

methods.createCanvas = function () {
    return document.createElement('canvas');
};

// FIXME
var _ctx;

function getContext() {
    if (!_ctx) {
        // Use util.createCanvas instead of createCanvas
        // because createCanvas may be overwritten in different environment
        _ctx = createCanvas().getContext('2d');
    }
    return _ctx;
}

/**
 * 查询数组中元素的index
 * @memberOf module:zrender/core/util
 */
function indexOf(array, value) {
    if (array) {
        if (array.indexOf) {
            return array.indexOf(value);
        }
        for (var i = 0, len = array.length; i < len; i++) {
            if (array[i] === value) {
                return i;
            }
        }
    }
    return -1;
}

/**
 * 构造类继承关系
 *
 * @memberOf module:zrender/core/util
 * @param {Function} clazz 源类
 * @param {Function} baseClazz 基类
 */
function inherits(clazz, baseClazz) {
    var clazzPrototype = clazz.prototype;
    function F() {}
    F.prototype = baseClazz.prototype;
    clazz.prototype = new F();

    for (var prop in clazzPrototype) {
        clazz.prototype[prop] = clazzPrototype[prop];
    }
    clazz.prototype.constructor = clazz;
    clazz.superClass = baseClazz;
}

/**
 * @memberOf module:zrender/core/util
 * @param {Object|Function} target
 * @param {Object|Function} sorce
 * @param {boolean} overlay
 */
function mixin(target, source, overlay) {
    target = 'prototype' in target ? target.prototype : target;
    source = 'prototype' in source ? source.prototype : source;

    defaults(target, source, overlay);
}

/**
 * Consider typed array.
 * @param {Array|TypedArray} data
 */
function isArrayLike(data) {
    if (! data) {
        return;
    }
    if (typeof data == 'string') {
        return false;
    }
    return typeof data.length == 'number';
}

/**
 * 数组或对象遍历
 * @memberOf module:zrender/core/util
 * @param {Object|Array} obj
 * @param {Function} cb
 * @param {*} [context]
 */
function each$1(obj, cb, context) {
    if (!(obj && cb)) {
        return;
    }
    if (obj.forEach && obj.forEach === nativeForEach) {
        obj.forEach(cb, context);
    }
    else if (obj.length === +obj.length) {
        for (var i = 0, len = obj.length; i < len; i++) {
            cb.call(context, obj[i], i, obj);
        }
    }
    else {
        for (var key in obj) {
            if (obj.hasOwnProperty(key)) {
                cb.call(context, obj[key], key, obj);
            }
        }
    }
}

/**
 * 数组映射
 * @memberOf module:zrender/core/util
 * @param {Array} obj
 * @param {Function} cb
 * @param {*} [context]
 * @return {Array}
 */
function map(obj, cb, context) {
    if (!(obj && cb)) {
        return;
    }
    if (obj.map && obj.map === nativeMap) {
        return obj.map(cb, context);
    }
    else {
        var result = [];
        for (var i = 0, len = obj.length; i < len; i++) {
            result.push(cb.call(context, obj[i], i, obj));
        }
        return result;
    }
}

/**
 * @memberOf module:zrender/core/util
 * @param {Array} obj
 * @param {Function} cb
 * @param {Object} [memo]
 * @param {*} [context]
 * @return {Array}
 */
function reduce(obj, cb, memo, context) {
    if (!(obj && cb)) {
        return;
    }
    if (obj.reduce && obj.reduce === nativeReduce) {
        return obj.reduce(cb, memo, context);
    }
    else {
        for (var i = 0, len = obj.length; i < len; i++) {
            memo = cb.call(context, memo, obj[i], i, obj);
        }
        return memo;
    }
}

/**
 * 数组过滤
 * @memberOf module:zrender/core/util
 * @param {Array} obj
 * @param {Function} cb
 * @param {*} [context]
 * @return {Array}
 */
function filter(obj, cb, context) {
    if (!(obj && cb)) {
        return;
    }
    if (obj.filter && obj.filter === nativeFilter) {
        return obj.filter(cb, context);
    }
    else {
        var result = [];
        for (var i = 0, len = obj.length; i < len; i++) {
            if (cb.call(context, obj[i], i, obj)) {
                result.push(obj[i]);
            }
        }
        return result;
    }
}

/**
 * 数组项查找
 * @memberOf module:zrender/core/util
 * @param {Array} obj
 * @param {Function} cb
 * @param {*} [context]
 * @return {*}
 */


/**
 * @memberOf module:zrender/core/util
 * @param {Function} func
 * @param {*} context
 * @return {Function}
 */
function bind(func, context) {
    var args = nativeSlice.call(arguments, 2);
    return function () {
        return func.apply(context, args.concat(nativeSlice.call(arguments)));
    };
}

/**
 * @memberOf module:zrender/core/util
 * @param {Function} func
 * @return {Function}
 */
function curry(func) {
    var args = nativeSlice.call(arguments, 1);
    return function () {
        return func.apply(this, args.concat(nativeSlice.call(arguments)));
    };
}

/**
 * @memberOf module:zrender/core/util
 * @param {*} value
 * @return {boolean}
 */
function isArray(value) {
    return objToString.call(value) === '[object Array]';
}

/**
 * @memberOf module:zrender/core/util
 * @param {*} value
 * @return {boolean}
 */
function isFunction$1(value) {
    return typeof value === 'function';
}

/**
 * @memberOf module:zrender/core/util
 * @param {*} value
 * @return {boolean}
 */
function isString(value) {
    return objToString.call(value) === '[object String]';
}

/**
 * @memberOf module:zrender/core/util
 * @param {*} value
 * @return {boolean}
 */
function isObject$1(value) {
    // Avoid a V8 JIT bug in Chrome 19-20.
    // See https://code.google.com/p/v8/issues/detail?id=2291 for more details.
    var type = typeof value;
    return type === 'function' || (!!value && type == 'object');
}

/**
 * @memberOf module:zrender/core/util
 * @param {*} value
 * @return {boolean}
 */
function isBuiltInObject(value) {
    return !!BUILTIN_OBJECT[objToString.call(value)];
}

/**
 * @memberOf module:zrender/core/util
 * @param {*} value
 * @return {boolean}
 */
function isTypedArray(value) {
    return !!TYPED_ARRAY[objToString.call(value)];
}

/**
 * @memberOf module:zrender/core/util
 * @param {*} value
 * @return {boolean}
 */
function isDom(value) {
    return typeof value === 'object'
        && typeof value.nodeType === 'number'
        && typeof value.ownerDocument === 'object';
}

/**
 * Whether is exactly NaN. Notice isNaN('a') returns true.
 * @param {*} value
 * @return {boolean}
 */
function eqNaN(value) {
    return value !== value;
}

/**
 * If value1 is not null, then return value1, otherwise judget rest of values.
 * Low performance.
 * @memberOf module:zrender/core/util
 * @return {*} Final value
 */
function retrieve(values) {
    for (var i = 0, len = arguments.length; i < len; i++) {
        if (arguments[i] != null) {
            return arguments[i];
        }
    }
}

function retrieve2(value0, value1) {
    return value0 != null
        ? value0
        : value1;
}

function retrieve3(value0, value1, value2) {
    return value0 != null
        ? value0
        : value1 != null
        ? value1
        : value2;
}

/**
 * @memberOf module:zrender/core/util
 * @param {Array} arr
 * @param {number} startIndex
 * @param {number} endIndex
 * @return {Array}
 */
function slice() {
    return Function.call.apply(nativeSlice, arguments);
}

/**
 * Normalize css liked array configuration
 * e.g.
 *  3 => [3, 3, 3, 3]
 *  [4, 2] => [4, 2, 4, 2]
 *  [4, 3, 2] => [4, 3, 2, 3]
 * @param {number|Array.<number>} val
 * @return {Array.<number>}
 */
function normalizeCssArray(val) {
    if (typeof (val) === 'number') {
        return [val, val, val, val];
    }
    var len = val.length;
    if (len === 2) {
        // vertical | horizontal
        return [val[0], val[1], val[0], val[1]];
    }
    else if (len === 3) {
        // top | horizontal | bottom
        return [val[0], val[1], val[2], val[1]];
    }
    return val;
}

/**
 * @memberOf module:zrender/core/util
 * @param {boolean} condition
 * @param {string} message
 */
function assert$1(condition, message) {
    if (!condition) {
        throw new Error(message);
    }
}

/**
 * @memberOf module:zrender/core/util
 * @param {string} str string to be trimed
 * @return {string} trimed string
 */
function trim(str) {
    if (str == null) {
        return null;
    }
    else if (typeof str.trim === 'function') {
        return str.trim();
    }
    else {
        return str.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');
    }
}

var primitiveKey = '__ec_primitive__';
/**
 * Set an object as primitive to be ignored traversing children in clone or merge
 */
function setAsPrimitive(obj) {
    obj[primitiveKey] = true;
}

function isPrimitive(obj) {
    return obj[primitiveKey];
}

/**
 * @constructor
 * @param {Object} obj Only apply `ownProperty`.
 */
function HashMap(obj) {
    var isArr = isArray(obj);
    var thisMap = this;

    (obj instanceof HashMap)
        ? obj.each(visit)
        : (obj && each$1(obj, visit));

    function visit(value, key) {
        isArr ? thisMap.set(value, key) : thisMap.set(key, value);
    }
}

// Add prefix to avoid conflict with Object.prototype.

HashMap.prototype = {
    constructor: HashMap,
    // Do not provide `has` method to avoid defining what is `has`.
    // (We usually treat `null` and `undefined` as the same, different
    // from ES6 Map).
    get: function (key) {
        return this.hasOwnProperty(key) ? this[key] : null;
    },
    set: function (key, value) {
        // Comparing with invocation chaining, `return value` is more commonly
        // used in this case: `var someVal = map.set('a', genVal());`
        return (this[key] = value);
    },
    // Although util.each can be performed on this hashMap directly, user
    // should not use the exposed keys, who are prefixed.
    each: function (cb, context) {
        context !== void 0 && (cb = bind(cb, context));
        for (var key in this) {
            this.hasOwnProperty(key) && cb(this[key], key);
        }
    },
    // Do not use this method if performance sensitive.
    removeKey: function (key) {
        delete this[key];
    }
};

function createHashMap(obj) {
    return new HashMap(obj);
}




function noop() {}

var ArrayCtor = typeof Float32Array === 'undefined'
    ? Array
    : Float32Array;

/**
 * 创建一个向量
 * @param {number} [x=0]
 * @param {number} [y=0]
 * @return {Vector2}
 */
function create(x, y) {
    var out = new ArrayCtor(2);
    if (x == null) {
        x = 0;
    }
    if (y == null) {
        y = 0;
    }
    out[0] = x;
    out[1] = y;
    return out;
}

/**
 * 复制向量数据
 * @param {Vector2} out
 * @param {Vector2} v
 * @return {Vector2}
 */
function copy(out, v) {
    out[0] = v[0];
    out[1] = v[1];
    return out;
}

/**
 * 克隆一个向量
 * @param {Vector2} v
 * @return {Vector2}
 */
function clone$1(v) {
    var out = new ArrayCtor(2);
    out[0] = v[0];
    out[1] = v[1];
    return out;
}

/**
 * 设置向量的两个项
 * @param {Vector2} out
 * @param {number} a
 * @param {number} b
 * @return {Vector2} 结果
 */


/**
 * 向量相加
 * @param {Vector2} out
 * @param {Vector2} v1
 * @param {Vector2} v2
 */
function add(out, v1, v2) {
    out[0] = v1[0] + v2[0];
    out[1] = v1[1] + v2[1];
    return out;
}

/**
 * 向量缩放后相加
 * @param {Vector2} out
 * @param {Vector2} v1
 * @param {Vector2} v2
 * @param {number} a
 */
function scaleAndAdd(out, v1, v2, a) {
    out[0] = v1[0] + v2[0] * a;
    out[1] = v1[1] + v2[1] * a;
    return out;
}

/**
 * 向量相减
 * @param {Vector2} out
 * @param {Vector2} v1
 * @param {Vector2} v2
 */
function sub(out, v1, v2) {
    out[0] = v1[0] - v2[0];
    out[1] = v1[1] - v2[1];
    return out;
}

/**
 * 向量长度
 * @param {Vector2} v
 * @return {number}
 */
function len(v) {
    return Math.sqrt(lenSquare(v));
}
 // jshint ignore:line

/**
 * 向量长度平方
 * @param {Vector2} v
 * @return {number}
 */
function lenSquare(v) {
    return v[0] * v[0] + v[1] * v[1];
}


/**
 * 向量乘法
 * @param {Vector2} out
 * @param {Vector2} v1
 * @param {Vector2} v2
 */


/**
 * 向量除法
 * @param {Vector2} out
 * @param {Vector2} v1
 * @param {Vector2} v2
 */


/**
 * 向量点乘
 * @param {Vector2} v1
 * @param {Vector2} v2
 * @return {number}
 */


/**
 * 向量缩放
 * @param {Vector2} out
 * @param {Vector2} v
 * @param {number} s
 */
function scale(out, v, s) {
    out[0] = v[0] * s;
    out[1] = v[1] * s;
    return out;
}

/**
 * 向量归一化
 * @param {Vector2} out
 * @param {Vector2} v
 */
function normalize(out, v) {
    var d = len(v);
    if (d === 0) {
        out[0] = 0;
        out[1] = 0;
    }
    else {
        out[0] = v[0] / d;
        out[1] = v[1] / d;
    }
    return out;
}

/**
 * 计算向量间距离
 * @param {Vector2} v1
 * @param {Vector2} v2
 * @return {number}
 */
function distance(v1, v2) {
    return Math.sqrt(
        (v1[0] - v2[0]) * (v1[0] - v2[0])
        + (v1[1] - v2[1]) * (v1[1] - v2[1])
    );
}
var dist = distance;

/**
 * 向量距离平方
 * @param {Vector2} v1
 * @param {Vector2} v2
 * @return {number}
 */
function distanceSquare(v1, v2) {
    return (v1[0] - v2[0]) * (v1[0] - v2[0])
        + (v1[1] - v2[1]) * (v1[1] - v2[1]);
}
var distSquare = distanceSquare;

/**
 * 求负向量
 * @param {Vector2} out
 * @param {Vector2} v
 */


/**
 * 插值两个点
 * @param {Vector2} out
 * @param {Vector2} v1
 * @param {Vector2} v2
 * @param {number} t
 */


/**
 * 矩阵左乘向量
 * @param {Vector2} out
 * @param {Vector2} v
 * @param {Vector2} m
 */
function applyTransform(out, v, m) {
    var x = v[0];
    var y = v[1];
    out[0] = m[0] * x + m[2] * y + m[4];
    out[1] = m[1] * x + m[3] * y + m[5];
    return out;
}

/**
 * 求两个向量最小值
 * @param  {Vector2} out
 * @param  {Vector2} v1
 * @param  {Vector2} v2
 */
function min(out, v1, v2) {
    out[0] = Math.min(v1[0], v2[0]);
    out[1] = Math.min(v1[1], v2[1]);
    return out;
}

/**
 * 求两个向量最大值
 * @param  {Vector2} out
 * @param  {Vector2} v1
 * @param  {Vector2} v2
 */
function max(out, v1, v2) {
    out[0] = Math.max(v1[0], v2[0]);
    out[1] = Math.max(v1[1], v2[1]);
    return out;
}

// TODO Draggable for group
// FIXME Draggable on element which has parent rotation or scale
function Draggable() {

    this.on('mousedown', this._dragStart, this);
    this.on('mousemove', this._drag, this);
    this.on('mouseup', this._dragEnd, this);
    this.on('globalout', this._dragEnd, this);
    // this._dropTarget = null;
    // this._draggingTarget = null;

    // this._x = 0;
    // this._y = 0;
}

Draggable.prototype = {

    constructor: Draggable,

    _dragStart: function (e) {
        var draggingTarget = e.target;
        if (draggingTarget && draggingTarget.draggable) {
            this._draggingTarget = draggingTarget;
            draggingTarget.dragging = true;
            this._x = e.offsetX;
            this._y = e.offsetY;

            this.dispatchToElement(param(draggingTarget, e), 'dragstart', e.event);
        }
    },

    _drag: function (e) {
        var draggingTarget = this._draggingTarget;
        if (draggingTarget) {

            var x = e.offsetX;
            var y = e.offsetY;

            var dx = x - this._x;
            var dy = y - this._y;
            this._x = x;
            this._y = y;

            draggingTarget.drift(dx, dy, e);
            this.dispatchToElement(param(draggingTarget, e), 'drag', e.event);

            var dropTarget = this.findHover(x, y, draggingTarget).target;
            var lastDropTarget = this._dropTarget;
            this._dropTarget = dropTarget;

            if (draggingTarget !== dropTarget) {
                if (lastDropTarget && dropTarget !== lastDropTarget) {
                    this.dispatchToElement(param(lastDropTarget, e), 'dragleave', e.event);
                }
                if (dropTarget && dropTarget !== lastDropTarget) {
                    this.dispatchToElement(param(dropTarget, e), 'dragenter', e.event);
                }
            }
        }
    },

    _dragEnd: function (e) {
        var draggingTarget = this._draggingTarget;

        if (draggingTarget) {
            draggingTarget.dragging = false;
        }

        this.dispatchToElement(param(draggingTarget, e), 'dragend', e.event);

        if (this._dropTarget) {
            this.dispatchToElement(param(this._dropTarget, e), 'drop', e.event);
        }

        this._draggingTarget = null;
        this._dropTarget = null;
    }

};

function param(target, e) {
    return {target: target, topTarget: e && e.topTarget};
}

/**
 * 事件扩展
 * @module zrender/mixin/Eventful
 * @author Kener (@Kener-林峰, kener.linfeng@gmail.com)
 *         pissang (https://www.github.com/pissang)
 */

var arrySlice = Array.prototype.slice;

/**
 * 事件分发器
 * @alias module:zrender/mixin/Eventful
 * @constructor
 */
var Eventful = function () {
    this._$handlers = {};
};

Eventful.prototype = {

    constructor: Eventful,

    /**
     * 单次触发绑定，trigger后销毁
     *
     * @param {string} event 事件名
     * @param {Function} handler 响应函数
     * @param {Object} context
     */
    one: function (event, handler, context) {
        var _h = this._$handlers;

        if (!handler || !event) {
            return this;
        }

        if (!_h[event]) {
            _h[event] = [];
        }

        for (var i = 0; i < _h[event].length; i++) {
            if (_h[event][i].h === handler) {
                return this;
            }
        }

        _h[event].push({
            h: handler,
            one: true,
            ctx: context || this
        });

        return this;
    },

    /**
     * 绑定事件
     * @param {string} event 事件名
     * @param {Function} handler 事件处理函数
     * @param {Object} [context]
     */
    on: function (event, handler, context) {
        var _h = this._$handlers;

        if (!handler || !event) {
            return this;
        }

        if (!_h[event]) {
            _h[event] = [];
        }

        for (var i = 0; i < _h[event].length; i++) {
            if (_h[event][i].h === handler) {
                return this;
            }
        }

        _h[event].push({
            h: handler,
            one: false,
            ctx: context || this
        });

        return this;
    },

    /**
     * 是否绑定了事件
     * @param  {string}  event
     * @return {boolean}
     */
    isSilent: function (event) {
        var _h = this._$handlers;
        return _h[event] && _h[event].length;
    },

    /**
     * 解绑事件
     * @param {string} event 事件名
     * @param {Function} [handler] 事件处理函数
     */
    off: function (event, handler) {
        var _h = this._$handlers;

        if (!event) {
            this._$handlers = {};
            return this;
        }

        if (handler) {
            if (_h[event]) {
                var newList = [];
                for (var i = 0, l = _h[event].length; i < l; i++) {
                    if (_h[event][i]['h'] != handler) {
                        newList.push(_h[event][i]);
                    }
                }
                _h[event] = newList;
            }

            if (_h[event] && _h[event].length === 0) {
                delete _h[event];
            }
        }
        else {
            delete _h[event];
        }

        return this;
    },

    /**
     * 事件分发
     *
     * @param {string} type 事件类型
     */
    trigger: function (type) {
        if (this._$handlers[type]) {
            var args = arguments;
            var argLen = args.length;

            if (argLen > 3) {
                args = arrySlice.call(args, 1);
            }

            var _h = this._$handlers[type];
            var len = _h.length;
            for (var i = 0; i < len;) {
                // Optimize advise from backbone
                switch (argLen) {
                    case 1:
                        _h[i]['h'].call(_h[i]['ctx']);
                        break;
                    case 2:
                        _h[i]['h'].call(_h[i]['ctx'], args[1]);
                        break;
                    case 3:
                        _h[i]['h'].call(_h[i]['ctx'], args[1], args[2]);
                        break;
                    default:
                        // have more than 2 given arguments
                        _h[i]['h'].apply(_h[i]['ctx'], args);
                        break;
                }

                if (_h[i]['one']) {
                    _h.splice(i, 1);
                    len--;
                }
                else {
                    i++;
                }
            }
        }

        return this;
    },

    /**
     * 带有context的事件分发, 最后一个参数是事件回调的context
     * @param {string} type 事件类型
     */
    triggerWithContext: function (type) {
        if (this._$handlers[type]) {
            var args = arguments;
            var argLen = args.length;

            if (argLen > 4) {
                args = arrySlice.call(args, 1, args.length - 1);
            }
            var ctx = args[args.length - 1];

            var _h = this._$handlers[type];
            var len = _h.length;
            for (var i = 0; i < len;) {
                // Optimize advise from backbone
                switch (argLen) {
                    case 1:
                        _h[i]['h'].call(ctx);
                        break;
                    case 2:
                        _h[i]['h'].call(ctx, args[1]);
                        break;
                    case 3:
                        _h[i]['h'].call(ctx, args[1], args[2]);
                        break;
                    default:
                        // have more than 2 given arguments
                        _h[i]['h'].apply(ctx, args);
                        break;
                }

                if (_h[i]['one']) {
                    _h.splice(i, 1);
                    len--;
                }
                else {
                    i++;
                }
            }
        }

        return this;
    }
};

var SILENT = 'silent';

function makeEventPacket(eveType, targetInfo, event) {
    return {
        type: eveType,
        event: event,
        // target can only be an element that is not silent.
        target: targetInfo.target,
        // topTarget can be a silent element.
        topTarget: targetInfo.topTarget,
        cancelBubble: false,
        offsetX: event.zrX,
        offsetY: event.zrY,
        gestureEvent: event.gestureEvent,
        pinchX: event.pinchX,
        pinchY: event.pinchY,
        pinchScale: event.pinchScale,
        wheelDelta: event.zrDelta,
        zrByTouch: event.zrByTouch,
        which: event.which
    };
}

function EmptyProxy () {}
EmptyProxy.prototype.dispose = function () {};

var handlerNames = [
    'click', 'dblclick', 'mousewheel', 'mouseout',
    'mouseup', 'mousedown', 'mousemove', 'contextmenu'
];
/**
 * @alias module:zrender/Handler
 * @constructor
 * @extends module:zrender/mixin/Eventful
 * @param {module:zrender/Storage} storage Storage instance.
 * @param {module:zrender/Painter} painter Painter instance.
 * @param {module:zrender/dom/HandlerProxy} proxy HandlerProxy instance.
 * @param {HTMLElement} painterRoot painter.root (not painter.getViewportRoot()).
 */
var Handler = function(storage, painter, proxy, painterRoot) {
    Eventful.call(this);

    this.storage = storage;

    this.painter = painter;

    this.painterRoot = painterRoot;

    proxy = proxy || new EmptyProxy();

    /**
     * Proxy of event. can be Dom, WebGLSurface, etc.
     */
    this.proxy = null;

    /**
     * {target, topTarget, x, y}
     * @private
     * @type {Object}
     */
    this._hovered = {};

    /**
     * @private
     * @type {Date}
     */
    this._lastTouchMoment;

    /**
     * @private
     * @type {number}
     */
    this._lastX;

    /**
     * @private
     * @type {number}
     */
    this._lastY;


    Draggable.call(this);

    this.setHandlerProxy(proxy);
};

Handler.prototype = {

    constructor: Handler,

    setHandlerProxy: function (proxy) {
        if (this.proxy) {
            this.proxy.dispose();
        }

        if (proxy) {
            each$1(handlerNames, function (name) {
                proxy.on && proxy.on(name, this[name], this);
            }, this);
            // Attach handler
            proxy.handler = this;
        }
        this.proxy = proxy;
    },

    mousemove: function (event) {
        var x = event.zrX;
        var y = event.zrY;

        var lastHovered = this._hovered;
        var lastHoveredTarget = lastHovered.target;

        // If lastHoveredTarget is removed from zr (detected by '__zr') by some API call
        // (like 'setOption' or 'dispatchAction') in event handlers, we should find
        // lastHovered again here. Otherwise 'mouseout' can not be triggered normally.
        // See #6198.
        if (lastHoveredTarget && !lastHoveredTarget.__zr) {
            lastHovered = this.findHover(lastHovered.x, lastHovered.y);
            lastHoveredTarget = lastHovered.target;
        }

        var hovered = this._hovered = this.findHover(x, y);
        var hoveredTarget = hovered.target;

        var proxy = this.proxy;
        proxy.setCursor && proxy.setCursor(hoveredTarget ? hoveredTarget.cursor : 'default');

        // Mouse out on previous hovered element
        if (lastHoveredTarget && hoveredTarget !== lastHoveredTarget) {
            this.dispatchToElement(lastHovered, 'mouseout', event);
        }

        // Mouse moving on one element
        this.dispatchToElement(hovered, 'mousemove', event);

        // Mouse over on a new element
        if (hoveredTarget && hoveredTarget !== lastHoveredTarget) {
            this.dispatchToElement(hovered, 'mouseover', event);
        }
    },

    mouseout: function (event) {
        this.dispatchToElement(this._hovered, 'mouseout', event);

        // There might be some doms created by upper layer application
        // at the same level of painter.getViewportRoot() (e.g., tooltip
        // dom created by echarts), where 'globalout' event should not
        // be triggered when mouse enters these doms. (But 'mouseout'
        // should be triggered at the original hovered element as usual).
        var element = event.toElement || event.relatedTarget;
        var innerDom;
        do {
            element = element && element.parentNode;
        }
        while (element && element.nodeType != 9 && !(
            innerDom = element === this.painterRoot
        ));

        !innerDom && this.trigger('globalout', {event: event});
    },

    /**
     * Resize
     */
    resize: function (event) {
        this._hovered = {};
    },

    /**
     * Dispatch event
     * @param {string} eventName
     * @param {event=} eventArgs
     */
    dispatch: function (eventName, eventArgs) {
        var handler = this[eventName];
        handler && handler.call(this, eventArgs);
    },

    /**
     * Dispose
     */
    dispose: function () {

        this.proxy.dispose();

        this.storage =
        this.proxy =
        this.painter = null;
    },

    /**
     * 设置默认的cursor style
     * @param {string} [cursorStyle='default'] 例如 crosshair
     */
    setCursorStyle: function (cursorStyle) {
        var proxy = this.proxy;
        proxy.setCursor && proxy.setCursor(cursorStyle);
    },

    /**
     * 事件分发代理
     *
     * @private
     * @param {Object} targetInfo {target, topTarget} 目标图形元素
     * @param {string} eventName 事件名称
     * @param {Object} event 事件对象
     */
    dispatchToElement: function (targetInfo, eventName, event) {
        targetInfo = targetInfo || {};
        var el = targetInfo.target;
        if (el && el.silent) {
            return;
        }
        var eventHandler = 'on' + eventName;
        var eventPacket = makeEventPacket(eventName, targetInfo, event);

        while (el) {
            el[eventHandler]
                && (eventPacket.cancelBubble = el[eventHandler].call(el, eventPacket));

            el.trigger(eventName, eventPacket);

            el = el.parent;

            if (eventPacket.cancelBubble) {
                break;
            }
        }

        if (!eventPacket.cancelBubble) {
            // 冒泡到顶级 zrender 对象
            this.trigger(eventName, eventPacket);
            // 分发事件到用户自定义层
            // 用户有可能在全局 click 事件中 dispose，所以需要判断下 painter 是否存在
            this.painter && this.painter.eachOtherLayer(function (layer) {
                if (typeof(layer[eventHandler]) == 'function') {
                    layer[eventHandler].call(layer, eventPacket);
                }
                if (layer.trigger) {
                    layer.trigger(eventName, eventPacket);
                }
            });
        }
    },

    /**
     * @private
     * @param {number} x
     * @param {number} y
     * @param {module:zrender/graphic/Displayable} exclude
     * @return {model:zrender/Element}
     * @method
     */
    findHover: function(x, y, exclude) {
        var list = this.storage.getDisplayList();
        var out = {x: x, y: y};

        for (var i = list.length - 1; i >= 0 ; i--) {
            var hoverCheckResult;
            if (list[i] !== exclude
                // getDisplayList may include ignored item in VML mode
                && !list[i].ignore
                && (hoverCheckResult = isHover(list[i], x, y))
            ) {
                !out.topTarget && (out.topTarget = list[i]);
                if (hoverCheckResult !== SILENT) {
                    out.target = list[i];
                    break;
                }
            }
        }

        return out;
    }
};

// Common handlers
each$1(['click', 'mousedown', 'mouseup', 'mousewheel', 'dblclick', 'contextmenu'], function (name) {
    Handler.prototype[name] = function (event) {
        // Find hover again to avoid click event is dispatched manually. Or click is triggered without mouseover
        var hovered = this.findHover(event.zrX, event.zrY);
        var hoveredTarget = hovered.target;

        if (name === 'mousedown') {
            this._downEl = hoveredTarget;
            this._downPoint = [event.zrX, event.zrY];
            // In case click triggered before mouseup
            this._upEl = hoveredTarget;
        }
        else if (name === 'mouseup') {
            this._upEl = hoveredTarget;
        }
        else if (name === 'click') {
            if (this._downEl !== this._upEl
                // Original click event is triggered on the whole canvas element,
                // including the case that `mousedown` - `mousemove` - `mouseup`,
                // which should be filtered, otherwise it will bring trouble to
                // pan and zoom.
                || !this._downPoint
                // Arbitrary value
                || dist(this._downPoint, [event.zrX, event.zrY]) > 4
            ) {
                return;
            }
            this._downPoint = null;
        }

        this.dispatchToElement(hovered, name, event);
    };
});

function isHover(displayable, x, y) {
    if (displayable[displayable.rectHover ? 'rectContain' : 'contain'](x, y)) {
        var el = displayable;
        var isSilent;
        while (el) {
            // If clipped by ancestor.
            // FIXME: If clipPath has neither stroke nor fill,
            // el.clipPath.contain(x, y) will always return false.
            if (el.clipPath && !el.clipPath.contain(x, y))  {
                return false;
            }
            if (el.silent) {
                isSilent = true;
            }
            el = el.parent;
        }
        return isSilent ? SILENT : true;
    }

    return false;
}

mixin(Handler, Eventful);
mixin(Handler, Draggable);

/**
 * 3x2矩阵操作类
 * @exports zrender/tool/matrix
 */

var ArrayCtor$1 = typeof Float32Array === 'undefined'
    ? Array
   : Float32Array;

/**
 * Create a identity matrix.
 * @return {Float32Array|Array.<number>}
 */
function create$1() {
    var out = new ArrayCtor$1(6);
    identity(out);

    return out;
}

/**
 * 设置矩阵为单位矩阵
 * @param {Float32Array|Array.<number>} out
 */
function identity(out) {
    out[0] = 1;
    out[1] = 0;
    out[2] = 0;
    out[3] = 1;
    out[4] = 0;
    out[5] = 0;
    return out;
}

/**
 * 复制矩阵
 * @param {Float32Array|Array.<number>} out
 * @param {Float32Array|Array.<number>} m
 */
function copy$1(out, m) {
    out[0] = m[0];
    out[1] = m[1];
    out[2] = m[2];
    out[3] = m[3];
    out[4] = m[4];
    out[5] = m[5];
    return out;
}

/**
 * 矩阵相乘
 * @param {Float32Array|Array.<number>} out
 * @param {Float32Array|Array.<number>} m1
 * @param {Float32Array|Array.<number>} m2
 */
function mul$1(out, m1, m2) {
    // Consider matrix.mul(m, m2, m);
    // where out is the same as m2.
    // So use temp variable to escape error.
    var out0 = m1[0] * m2[0] + m1[2] * m2[1];
    var out1 = m1[1] * m2[0] + m1[3] * m2[1];
    var out2 = m1[0] * m2[2] + m1[2] * m2[3];
    var out3 = m1[1] * m2[2] + m1[3] * m2[3];
    var out4 = m1[0] * m2[4] + m1[2] * m2[5] + m1[4];
    var out5 = m1[1] * m2[4] + m1[3] * m2[5] + m1[5];
    out[0] = out0;
    out[1] = out1;
    out[2] = out2;
    out[3] = out3;
    out[4] = out4;
    out[5] = out5;
    return out;
}

/**
 * 平移变换
 * @param {Float32Array|Array.<number>} out
 * @param {Float32Array|Array.<number>} a
 * @param {Float32Array|Array.<number>} v
 */
function translate(out, a, v) {
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    out[3] = a[3];
    out[4] = a[4] + v[0];
    out[5] = a[5] + v[1];
    return out;
}

/**
 * 旋转变换
 * @param {Float32Array|Array.<number>} out
 * @param {Float32Array|Array.<number>} a
 * @param {number} rad
 */
function rotate(out, a, rad) {
    var aa = a[0];
    var ac = a[2];
    var atx = a[4];
    var ab = a[1];
    var ad = a[3];
    var aty = a[5];
    var st = Math.sin(rad);
    var ct = Math.cos(rad);

    out[0] = aa * ct + ab * st;
    out[1] = -aa * st + ab * ct;
    out[2] = ac * ct + ad * st;
    out[3] = -ac * st + ct * ad;
    out[4] = ct * atx + st * aty;
    out[5] = ct * aty - st * atx;
    return out;
}

/**
 * 缩放变换
 * @param {Float32Array|Array.<number>} out
 * @param {Float32Array|Array.<number>} a
 * @param {Float32Array|Array.<number>} v
 */
function scale$1(out, a, v) {
    var vx = v[0];
    var vy = v[1];
    out[0] = a[0] * vx;
    out[1] = a[1] * vy;
    out[2] = a[2] * vx;
    out[3] = a[3] * vy;
    out[4] = a[4] * vx;
    out[5] = a[5] * vy;
    return out;
}

/**
 * 求逆矩阵
 * @param {Float32Array|Array.<number>} out
 * @param {Float32Array|Array.<number>} a
 */
function invert(out, a) {

    var aa = a[0];
    var ac = a[2];
    var atx = a[4];
    var ab = a[1];
    var ad = a[3];
    var aty = a[5];

    var det = aa * ad - ab * ac;
    if (!det) {
        return null;
    }
    det = 1.0 / det;

    out[0] = ad * det;
    out[1] = -ab * det;
    out[2] = -ac * det;
    out[3] = aa * det;
    out[4] = (ac * aty - ad * atx) * det;
    out[5] = (ab * atx - aa * aty) * det;
    return out;
}

/**
 * Clone a new matrix.
 * @param {Float32Array|Array.<number>} a
 */

/**
 * 提供变换扩展
 * @module zrender/mixin/Transformable
 * @author pissang (https://www.github.com/pissang)
 */

var mIdentity = identity;

var EPSILON = 5e-5;

function isNotAroundZero(val) {
    return val > EPSILON || val < -EPSILON;
}

/**
 * @alias module:zrender/mixin/Transformable
 * @constructor
 */
var Transformable = function (opts) {
    opts = opts || {};
    // If there are no given position, rotation, scale
    if (!opts.position) {
        /**
         * 平移
         * @type {Array.<number>}
         * @default [0, 0]
         */
        this.position = [0, 0];
    }
    if (opts.rotation == null) {
        /**
         * 旋转
         * @type {Array.<number>}
         * @default 0
         */
        this.rotation = 0;
    }
    if (!opts.scale) {
        /**
         * 缩放
         * @type {Array.<number>}
         * @default [1, 1]
         */
        this.scale = [1, 1];
    }
    /**
     * 旋转和缩放的原点
     * @type {Array.<number>}
     * @default null
     */
    this.origin = this.origin || null;
};

var transformableProto = Transformable.prototype;
transformableProto.transform = null;

/**
 * 判断是否需要有坐标变换
 * 如果有坐标变换, 则从position, rotation, scale以及父节点的transform计算出自身的transform矩阵
 */
transformableProto.needLocalTransform = function () {
    return isNotAroundZero(this.rotation)
        || isNotAroundZero(this.position[0])
        || isNotAroundZero(this.position[1])
        || isNotAroundZero(this.scale[0] - 1)
        || isNotAroundZero(this.scale[1] - 1);
};

transformableProto.updateTransform = function () {
    var parent = this.parent;
    var parentHasTransform = parent && parent.transform;
    var needLocalTransform = this.needLocalTransform();

    var m = this.transform;
    if (!(needLocalTransform || parentHasTransform)) {
        m && mIdentity(m);
        return;
    }

    m = m || create$1();

    if (needLocalTransform) {
        this.getLocalTransform(m);
    }
    else {
        mIdentity(m);
    }

    // 应用父节点变换
    if (parentHasTransform) {
        if (needLocalTransform) {
            mul$1(m, parent.transform, m);
        }
        else {
            copy$1(m, parent.transform);
        }
    }
    // 保存这个变换矩阵
    this.transform = m;

    this.invTransform = this.invTransform || create$1();
    invert(this.invTransform, m);
};

transformableProto.getLocalTransform = function (m) {
    return Transformable.getLocalTransform(this, m);
};

/**
 * 将自己的transform应用到context上
 * @param {CanvasRenderingContext2D} ctx
 */
transformableProto.setTransform = function (ctx) {
    var m = this.transform;
    var dpr = ctx.dpr || 1;
    if (m) {
        ctx.setTransform(dpr * m[0], dpr * m[1], dpr * m[2], dpr * m[3], dpr * m[4], dpr * m[5]);
    }
    else {
        ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
    }
};

transformableProto.restoreTransform = function (ctx) {
    var dpr = ctx.dpr || 1;
    ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
};

var tmpTransform = [];

/**
 * 分解`transform`矩阵到`position`, `rotation`, `scale`
 */
transformableProto.decomposeTransform = function () {
    if (!this.transform) {
        return;
    }
    var parent = this.parent;
    var m = this.transform;
    if (parent && parent.transform) {
        // Get local transform and decompose them to position, scale, rotation
        mul$1(tmpTransform, parent.invTransform, m);
        m = tmpTransform;
    }
    var sx = m[0] * m[0] + m[1] * m[1];
    var sy = m[2] * m[2] + m[3] * m[3];
    var position = this.position;
    var scale$$1 = this.scale;
    if (isNotAroundZero(sx - 1)) {
        sx = Math.sqrt(sx);
    }
    if (isNotAroundZero(sy - 1)) {
        sy = Math.sqrt(sy);
    }
    if (m[0] < 0) {
        sx = -sx;
    }
    if (m[3] < 0) {
        sy = -sy;
    }
    position[0] = m[4];
    position[1] = m[5];
    scale$$1[0] = sx;
    scale$$1[1] = sy;
    this.rotation = Math.atan2(-m[1] / sy, m[0] / sx);
};

/**
 * Get global scale
 * @return {Array.<number>}
 */
transformableProto.getGlobalScale = function () {
    var m = this.transform;
    if (!m) {
        return [1, 1];
    }
    var sx = Math.sqrt(m[0] * m[0] + m[1] * m[1]);
    var sy = Math.sqrt(m[2] * m[2] + m[3] * m[3]);
    if (m[0] < 0) {
        sx = -sx;
    }
    if (m[3] < 0) {
        sy = -sy;
    }
    return [sx, sy];
};
/**
 * 变换坐标位置到 shape 的局部坐标空间
 * @method
 * @param {number} x
 * @param {number} y
 * @return {Array.<number>}
 */
transformableProto.transformCoordToLocal = function (x, y) {
    var v2 = [x, y];
    var invTransform = this.invTransform;
    if (invTransform) {
        applyTransform(v2, v2, invTransform);
    }
    return v2;
};

/**
 * 变换局部坐标位置到全局坐标空间
 * @method
 * @param {number} x
 * @param {number} y
 * @return {Array.<number>}
 */
transformableProto.transformCoordToGlobal = function (x, y) {
    var v2 = [x, y];
    var transform = this.transform;
    if (transform) {
        applyTransform(v2, v2, transform);
    }
    return v2;
};

/**
 * @static
 * @param {Object} target
 * @param {Array.<number>} target.origin
 * @param {number} target.rotation
 * @param {Array.<number>} target.position
 * @param {Array.<number>} [m]
 */
Transformable.getLocalTransform = function (target, m) {
    m = m || [];
    mIdentity(m);

    var origin = target.origin;
    var scale$$1 = target.scale || [1, 1];
    var rotation = target.rotation || 0;
    var position = target.position || [0, 0];

    if (origin) {
        // Translate to origin
        m[4] -= origin[0];
        m[5] -= origin[1];
    }
    scale$1(m, m, scale$$1);
    if (rotation) {
        rotate(m, m, rotation);
    }
    if (origin) {
        // Translate back from origin
        m[4] += origin[0];
        m[5] += origin[1];
    }

    m[4] += position[0];
    m[5] += position[1];

    return m;
};

/**
 * 缓动代码来自 https://github.com/sole/tween.js/blob/master/src/Tween.js
 * @see http://sole.github.io/tween.js/examples/03_graphs.html
 * @exports zrender/animation/easing
 */
var easing = {
    /**
    * @param {number} k
    * @return {number}
    */
    linear: function (k) {
        return k;
    },

    /**
    * @param {number} k
    * @return {number}
    */
    quadraticIn: function (k) {
        return k * k;
    },
    /**
    * @param {number} k
    * @return {number}
    */
    quadraticOut: function (k) {
        return k * (2 - k);
    },
    /**
    * @param {number} k
    * @return {number}
    */
    quadraticInOut: function (k) {
        if ((k *= 2) < 1) {
            return 0.5 * k * k;
        }
        return -0.5 * (--k * (k - 2) - 1);
    },

    // 三次方的缓动（t^3）
    /**
    * @param {number} k
    * @return {number}
    */
    cubicIn: function (k) {
        return k * k * k;
    },
    /**
    * @param {number} k
    * @return {number}
    */
    cubicOut: function (k) {
        return --k * k * k + 1;
    },
    /**
    * @param {number} k
    * @return {number}
    */
    cubicInOut: function (k) {
        if ((k *= 2) < 1) {
            return 0.5 * k * k * k;
        }
        return 0.5 * ((k -= 2) * k * k + 2);
    },

    // 四次方的缓动（t^4）
    /**
    * @param {number} k
    * @return {number}
    */
    quarticIn: function (k) {
        return k * k * k * k;
    },
    /**
    * @param {number} k
    * @return {number}
    */
    quarticOut: function (k) {
        return 1 - (--k * k * k * k);
    },
    /**
    * @param {number} k
    * @return {number}
    */
    quarticInOut: function (k) {
        if ((k *= 2) < 1) {
            return 0.5 * k * k * k * k;
        }
        return -0.5 * ((k -= 2) * k * k * k - 2);
    },

    // 五次方的缓动（t^5）
    /**
    * @param {number} k
    * @return {number}
    */
    quinticIn: function (k) {
        return k * k * k * k * k;
    },
    /**
    * @param {number} k
    * @return {number}
    */
    quinticOut: function (k) {
        return --k * k * k * k * k + 1;
    },
    /**
    * @param {number} k
    * @return {number}
    */
    quinticInOut: function (k) {
        if ((k *= 2) < 1) {
            return 0.5 * k * k * k * k * k;
        }
        return 0.5 * ((k -= 2) * k * k * k * k + 2);
    },

    // 正弦曲线的缓动（sin(t)）
    /**
    * @param {number} k
    * @return {number}
    */
    sinusoidalIn: function (k) {
        return 1 - Math.cos(k * Math.PI / 2);
    },
    /**
    * @param {number} k
    * @return {number}
    */
    sinusoidalOut: function (k) {
        return Math.sin(k * Math.PI / 2);
    },
    /**
    * @param {number} k
    * @return {number}
    */
    sinusoidalInOut: function (k) {
        return 0.5 * (1 - Math.cos(Math.PI * k));
    },

    // 指数曲线的缓动（2^t）
    /**
    * @param {number} k
    * @return {number}
    */
    exponentialIn: function (k) {
        return k === 0 ? 0 : Math.pow(1024, k - 1);
    },
    /**
    * @param {number} k
    * @return {number}
    */
    exponentialOut: function (k) {
        return k === 1 ? 1 : 1 - Math.pow(2, -10 * k);
    },
    /**
    * @param {number} k
    * @return {number}
    */
    exponentialInOut: function (k) {
        if (k === 0) {
            return 0;
        }
        if (k === 1) {
            return 1;
        }
        if ((k *= 2) < 1) {
            return 0.5 * Math.pow(1024, k - 1);
        }
        return 0.5 * (-Math.pow(2, -10 * (k - 1)) + 2);
    },

    // 圆形曲线的缓动（sqrt(1-t^2)）
    /**
    * @param {number} k
    * @return {number}
    */
    circularIn: function (k) {
        return 1 - Math.sqrt(1 - k * k);
    },
    /**
    * @param {number} k
    * @return {number}
    */
    circularOut: function (k) {
        return Math.sqrt(1 - (--k * k));
    },
    /**
    * @param {number} k
    * @return {number}
    */
    circularInOut: function (k) {
        if ((k *= 2) < 1) {
            return -0.5 * (Math.sqrt(1 - k * k) - 1);
        }
        return 0.5 * (Math.sqrt(1 - (k -= 2) * k) + 1);
    },

    // 创建类似于弹簧在停止前来回振荡的动画
    /**
    * @param {number} k
    * @return {number}
    */
    elasticIn: function (k) {
        var s;
        var a = 0.1;
        var p = 0.4;
        if (k === 0) {
            return 0;
        }
        if (k === 1) {
            return 1;
        }
        if (!a || a < 1) {
            a = 1; s = p / 4;
        }
        else {
            s = p * Math.asin(1 / a) / (2 * Math.PI);
        }
        return -(a * Math.pow(2, 10 * (k -= 1)) *
                    Math.sin((k - s) * (2 * Math.PI) / p));
    },
    /**
    * @param {number} k
    * @return {number}
    */
    elasticOut: function (k) {
        var s;
        var a = 0.1;
        var p = 0.4;
        if (k === 0) {
            return 0;
        }
        if (k === 1) {
            return 1;
        }
        if (!a || a < 1) {
            a = 1; s = p / 4;
        }
        else {
            s = p * Math.asin(1 / a) / (2 * Math.PI);
        }
        return (a * Math.pow(2, -10 * k) *
                Math.sin((k - s) * (2 * Math.PI) / p) + 1);
    },
    /**
    * @param {number} k
    * @return {number}
    */
    elasticInOut: function (k) {
        var s;
        var a = 0.1;
        var p = 0.4;
        if (k === 0) {
            return 0;
        }
        if (k === 1) {
            return 1;
        }
        if (!a || a < 1) {
            a = 1; s = p / 4;
        }
        else {
            s = p * Math.asin(1 / a) / (2 * Math.PI);
        }
        if ((k *= 2) < 1) {
            return -0.5 * (a * Math.pow(2, 10 * (k -= 1))
                * Math.sin((k - s) * (2 * Math.PI) / p));
        }
        return a * Math.pow(2, -10 * (k -= 1))
                * Math.sin((k - s) * (2 * Math.PI) / p) * 0.5 + 1;

    },

    // 在某一动画开始沿指示的路径进行动画处理前稍稍收回该动画的移动
    /**
    * @param {number} k
    * @return {number}
    */
    backIn: function (k) {
        var s = 1.70158;
        return k * k * ((s + 1) * k - s);
    },
    /**
    * @param {number} k
    * @return {number}
    */
    backOut: function (k) {
        var s = 1.70158;
        return --k * k * ((s + 1) * k + s) + 1;
    },
    /**
    * @param {number} k
    * @return {number}
    */
    backInOut: function (k) {
        var s = 1.70158 * 1.525;
        if ((k *= 2) < 1) {
            return 0.5 * (k * k * ((s + 1) * k - s));
        }
        return 0.5 * ((k -= 2) * k * ((s + 1) * k + s) + 2);
    },

    // 创建弹跳效果
    /**
    * @param {number} k
    * @return {number}
    */
    bounceIn: function (k) {
        return 1 - easing.bounceOut(1 - k);
    },
    /**
    * @param {number} k
    * @return {number}
    */
    bounceOut: function (k) {
        if (k < (1 / 2.75)) {
            return 7.5625 * k * k;
        }
        else if (k < (2 / 2.75)) {
            return 7.5625 * (k -= (1.5 / 2.75)) * k + 0.75;
        }
        else if (k < (2.5 / 2.75)) {
            return 7.5625 * (k -= (2.25 / 2.75)) * k + 0.9375;
        }
        else {
            return 7.5625 * (k -= (2.625 / 2.75)) * k + 0.984375;
        }
    },
    /**
    * @param {number} k
    * @return {number}
    */
    bounceInOut: function (k) {
        if (k < 0.5) {
            return easing.bounceIn(k * 2) * 0.5;
        }
        return easing.bounceOut(k * 2 - 1) * 0.5 + 0.5;
    }
};

/**
 * 动画主控制器
 * @config target 动画对象，可以是数组，如果是数组的话会批量分发onframe等事件
 * @config life(1000) 动画时长
 * @config delay(0) 动画延迟时间
 * @config loop(true)
 * @config gap(0) 循环的间隔时间
 * @config onframe
 * @config easing(optional)
 * @config ondestroy(optional)
 * @config onrestart(optional)
 *
 * TODO pause
 */

function Clip(options) {

    this._target = options.target;

    // 生命周期
    this._life = options.life || 1000;
    // 延时
    this._delay = options.delay || 0;
    // 开始时间
    // this._startTime = new Date().getTime() + this._delay;// 单位毫秒
    this._initialized = false;

    // 是否循环
    this.loop = options.loop == null ? false : options.loop;

    this.gap = options.gap || 0;

    this.easing = options.easing || 'Linear';

    this.onframe = options.onframe;
    this.ondestroy = options.ondestroy;
    this.onrestart = options.onrestart;

    this._pausedTime = 0;
    this._paused = false;
}

Clip.prototype = {

    constructor: Clip,

    step: function (globalTime, deltaTime) {
        // Set startTime on first step, or _startTime may has milleseconds different between clips
        // PENDING
        if (!this._initialized) {
            this._startTime = globalTime + this._delay;
            this._initialized = true;
        }

        if (this._paused) {
            this._pausedTime += deltaTime;
            return;
        }

        var percent = (globalTime - this._startTime - this._pausedTime) / this._life;

        // 还没开始
        if (percent < 0) {
            return;
        }

        percent = Math.min(percent, 1);

        var easing$$1 = this.easing;
        var easingFunc = typeof easing$$1 == 'string' ? easing[easing$$1] : easing$$1;
        var schedule = typeof easingFunc === 'function'
            ? easingFunc(percent)
            : percent;

        this.fire('frame', schedule);

        // 结束
        if (percent == 1) {
            if (this.loop) {
                this.restart (globalTime);
                // 重新开始周期
                // 抛出而不是直接调用事件直到 stage.update 后再统一调用这些事件
                return 'restart';
            }

            // 动画完成将这个控制器标识为待删除
            // 在Animation.update中进行批量删除
            this._needsRemove = true;
            return 'destroy';
        }

        return null;
    },

    restart: function (globalTime) {
        var remainder = (globalTime - this._startTime - this._pausedTime) % this._life;
        this._startTime = globalTime - remainder + this.gap;
        this._pausedTime = 0;

        this._needsRemove = false;
    },

    fire: function (eventType, arg) {
        eventType = 'on' + eventType;
        if (this[eventType]) {
            this[eventType](this._target, arg);
        }
    },

    pause: function () {
        this._paused = true;
    },

    resume: function () {
        this._paused = false;
    }
};

// Simple LRU cache use doubly linked list
// @module zrender/core/LRU

/**
 * Simple double linked list. Compared with array, it has O(1) remove operation.
 * @constructor
 */
var LinkedList = function () {

    /**
     * @type {module:zrender/core/LRU~Entry}
     */
    this.head = null;

    /**
     * @type {module:zrender/core/LRU~Entry}
     */
    this.tail = null;

    this._len = 0;
};

var linkedListProto = LinkedList.prototype;
/**
 * Insert a new value at the tail
 * @param  {} val
 * @return {module:zrender/core/LRU~Entry}
 */
linkedListProto.insert = function (val) {
    var entry = new Entry(val);
    this.insertEntry(entry);
    return entry;
};

/**
 * Insert an entry at the tail
 * @param  {module:zrender/core/LRU~Entry} entry
 */
linkedListProto.insertEntry = function (entry) {
    if (!this.head) {
        this.head = this.tail = entry;
    }
    else {
        this.tail.next = entry;
        entry.prev = this.tail;
        entry.next = null;
        this.tail = entry;
    }
    this._len++;
};

/**
 * Remove entry.
 * @param  {module:zrender/core/LRU~Entry} entry
 */
linkedListProto.remove = function (entry) {
    var prev = entry.prev;
    var next = entry.next;
    if (prev) {
        prev.next = next;
    }
    else {
        // Is head
        this.head = next;
    }
    if (next) {
        next.prev = prev;
    }
    else {
        // Is tail
        this.tail = prev;
    }
    entry.next = entry.prev = null;
    this._len--;
};

/**
 * @return {number}
 */
linkedListProto.len = function () {
    return this._len;
};

/**
 * Clear list
 */
linkedListProto.clear = function () {
    this.head = this.tail = null;
    this._len = 0;
};

/**
 * @constructor
 * @param {} val
 */
var Entry = function (val) {
    /**
     * @type {}
     */
    this.value = val;

    /**
     * @type {module:zrender/core/LRU~Entry}
     */
    this.next;

    /**
     * @type {module:zrender/core/LRU~Entry}
     */
    this.prev;
};

/**
 * LRU Cache
 * @constructor
 * @alias module:zrender/core/LRU
 */
var LRU = function (maxSize) {

    this._list = new LinkedList();

    this._map = {};

    this._maxSize = maxSize || 10;

    this._lastRemovedEntry = null;
};

var LRUProto = LRU.prototype;

/**
 * @param  {string} key
 * @param  {} value
 * @return {} Removed value
 */
LRUProto.put = function (key, value) {
    var list = this._list;
    var map = this._map;
    var removed = null;
    if (map[key] == null) {
        var len = list.len();
        // Reuse last removed entry
        var entry = this._lastRemovedEntry;

        if (len >= this._maxSize && len > 0) {
            // Remove the least recently used
            var leastUsedEntry = list.head;
            list.remove(leastUsedEntry);
            delete map[leastUsedEntry.key];

            removed = leastUsedEntry.value;
            this._lastRemovedEntry = leastUsedEntry;
        }

        if (entry) {
            entry.value = value;
        }
        else {
            entry = new Entry(value);
        }
        entry.key = key;
        list.insertEntry(entry);
        map[key] = entry;
    }

    return removed;
};

/**
 * @param  {string} key
 * @return {}
 */
LRUProto.get = function (key) {
    var entry = this._map[key];
    var list = this._list;
    if (entry != null) {
        // Put the latest used entry in the tail
        if (entry !== list.tail) {
            list.remove(entry);
            list.insertEntry(entry);
        }

        return entry.value;
    }
};

/**
 * Clear the cache
 */
LRUProto.clear = function () {
    this._list.clear();
    this._map = {};
};

var kCSSColorTable = {
    'transparent': [0,0,0,0], 'aliceblue': [240,248,255,1],
    'antiquewhite': [250,235,215,1], 'aqua': [0,255,255,1],
    'aquamarine': [127,255,212,1], 'azure': [240,255,255,1],
    'beige': [245,245,220,1], 'bisque': [255,228,196,1],
    'black': [0,0,0,1], 'blanchedalmond': [255,235,205,1],
    'blue': [0,0,255,1], 'blueviolet': [138,43,226,1],
    'brown': [165,42,42,1], 'burlywood': [222,184,135,1],
    'cadetblue': [95,158,160,1], 'chartreuse': [127,255,0,1],
    'chocolate': [210,105,30,1], 'coral': [255,127,80,1],
    'cornflowerblue': [100,149,237,1], 'cornsilk': [255,248,220,1],
    'crimson': [220,20,60,1], 'cyan': [0,255,255,1],
    'darkblue': [0,0,139,1], 'darkcyan': [0,139,139,1],
    'darkgoldenrod': [184,134,11,1], 'darkgray': [169,169,169,1],
    'darkgreen': [0,100,0,1], 'darkgrey': [169,169,169,1],
    'darkkhaki': [189,183,107,1], 'darkmagenta': [139,0,139,1],
    'darkolivegreen': [85,107,47,1], 'darkorange': [255,140,0,1],
    'darkorchid': [153,50,204,1], 'darkred': [139,0,0,1],
    'darksalmon': [233,150,122,1], 'darkseagreen': [143,188,143,1],
    'darkslateblue': [72,61,139,1], 'darkslategray': [47,79,79,1],
    'darkslategrey': [47,79,79,1], 'darkturquoise': [0,206,209,1],
    'darkviolet': [148,0,211,1], 'deeppink': [255,20,147,1],
    'deepskyblue': [0,191,255,1], 'dimgray': [105,105,105,1],
    'dimgrey': [105,105,105,1], 'dodgerblue': [30,144,255,1],
    'firebrick': [178,34,34,1], 'floralwhite': [255,250,240,1],
    'forestgreen': [34,139,34,1], 'fuchsia': [255,0,255,1],
    'gainsboro': [220,220,220,1], 'ghostwhite': [248,248,255,1],
    'gold': [255,215,0,1], 'goldenrod': [218,165,32,1],
    'gray': [128,128,128,1], 'green': [0,128,0,1],
    'greenyellow': [173,255,47,1], 'grey': [128,128,128,1],
    'honeydew': [240,255,240,1], 'hotpink': [255,105,180,1],
    'indianred': [205,92,92,1], 'indigo': [75,0,130,1],
    'ivory': [255,255,240,1], 'khaki': [240,230,140,1],
    'lavender': [230,230,250,1], 'lavenderblush': [255,240,245,1],
    'lawngreen': [124,252,0,1], 'lemonchiffon': [255,250,205,1],
    'lightblue': [173,216,230,1], 'lightcoral': [240,128,128,1],
    'lightcyan': [224,255,255,1], 'lightgoldenrodyellow': [250,250,210,1],
    'lightgray': [211,211,211,1], 'lightgreen': [144,238,144,1],
    'lightgrey': [211,211,211,1], 'lightpink': [255,182,193,1],
    'lightsalmon': [255,160,122,1], 'lightseagreen': [32,178,170,1],
    'lightskyblue': [135,206,250,1], 'lightslategray': [119,136,153,1],
    'lightslategrey': [119,136,153,1], 'lightsteelblue': [176,196,222,1],
    'lightyellow': [255,255,224,1], 'lime': [0,255,0,1],
    'limegreen': [50,205,50,1], 'linen': [250,240,230,1],
    'magenta': [255,0,255,1], 'maroon': [128,0,0,1],
    'mediumaquamarine': [102,205,170,1], 'mediumblue': [0,0,205,1],
    'mediumorchid': [186,85,211,1], 'mediumpurple': [147,112,219,1],
    'mediumseagreen': [60,179,113,1], 'mediumslateblue': [123,104,238,1],
    'mediumspringgreen': [0,250,154,1], 'mediumturquoise': [72,209,204,1],
    'mediumvioletred': [199,21,133,1], 'midnightblue': [25,25,112,1],
    'mintcream': [245,255,250,1], 'mistyrose': [255,228,225,1],
    'moccasin': [255,228,181,1], 'navajowhite': [255,222,173,1],
    'navy': [0,0,128,1], 'oldlace': [253,245,230,1],
    'olive': [128,128,0,1], 'olivedrab': [107,142,35,1],
    'orange': [255,165,0,1], 'orangered': [255,69,0,1],
    'orchid': [218,112,214,1], 'palegoldenrod': [238,232,170,1],
    'palegreen': [152,251,152,1], 'paleturquoise': [175,238,238,1],
    'palevioletred': [219,112,147,1], 'papayawhip': [255,239,213,1],
    'peachpuff': [255,218,185,1], 'peru': [205,133,63,1],
    'pink': [255,192,203,1], 'plum': [221,160,221,1],
    'powderblue': [176,224,230,1], 'purple': [128,0,128,1],
    'red': [255,0,0,1], 'rosybrown': [188,143,143,1],
    'royalblue': [65,105,225,1], 'saddlebrown': [139,69,19,1],
    'salmon': [250,128,114,1], 'sandybrown': [244,164,96,1],
    'seagreen': [46,139,87,1], 'seashell': [255,245,238,1],
    'sienna': [160,82,45,1], 'silver': [192,192,192,1],
    'skyblue': [135,206,235,1], 'slateblue': [106,90,205,1],
    'slategray': [112,128,144,1], 'slategrey': [112,128,144,1],
    'snow': [255,250,250,1], 'springgreen': [0,255,127,1],
    'steelblue': [70,130,180,1], 'tan': [210,180,140,1],
    'teal': [0,128,128,1], 'thistle': [216,191,216,1],
    'tomato': [255,99,71,1], 'turquoise': [64,224,208,1],
    'violet': [238,130,238,1], 'wheat': [245,222,179,1],
    'white': [255,255,255,1], 'whitesmoke': [245,245,245,1],
    'yellow': [255,255,0,1], 'yellowgreen': [154,205,50,1]
};

function clampCssByte(i) {  // Clamp to integer 0 .. 255.
    i = Math.round(i);  // Seems to be what Chrome does (vs truncation).
    return i < 0 ? 0 : i > 255 ? 255 : i;
}

function clampCssFloat(f) {  // Clamp to float 0.0 .. 1.0.
    return f < 0 ? 0 : f > 1 ? 1 : f;
}

function parseCssInt(str) {  // int or percentage.
    if (str.length && str.charAt(str.length - 1) === '%') {
        return clampCssByte(parseFloat(str) / 100 * 255);
    }
    return clampCssByte(parseInt(str, 10));
}

function parseCssFloat(str) {  // float or percentage.
    if (str.length && str.charAt(str.length - 1) === '%') {
        return clampCssFloat(parseFloat(str) / 100);
    }
    return clampCssFloat(parseFloat(str));
}

function cssHueToRgb(m1, m2, h) {
    if (h < 0) {
        h += 1;
    }
    else if (h > 1) {
        h -= 1;
    }

    if (h * 6 < 1) {
        return m1 + (m2 - m1) * h * 6;
    }
    if (h * 2 < 1) {
        return m2;
    }
    if (h * 3 < 2) {
        return m1 + (m2 - m1) * (2/3 - h) * 6;
    }
    return m1;
}

function setRgba(out, r, g, b, a) {
    out[0] = r; out[1] = g; out[2] = b; out[3] = a;
    return out;
}
function copyRgba(out, a) {
    out[0] = a[0]; out[1] = a[1]; out[2] = a[2]; out[3] = a[3];
    return out;
}

var colorCache = new LRU(20);
var lastRemovedArr = null;

function putToCache(colorStr, rgbaArr) {
    // Reuse removed array
    if (lastRemovedArr) {
        copyRgba(lastRemovedArr, rgbaArr);
    }
    lastRemovedArr = colorCache.put(colorStr, lastRemovedArr || (rgbaArr.slice()));
}

/**
 * @param {string} colorStr
 * @param {Array.<number>} out
 * @return {Array.<number>}
 * @memberOf module:zrender/util/color
 */
function parse(colorStr, rgbaArr) {
    if (!colorStr) {
        return;
    }
    rgbaArr = rgbaArr || [];

    var cached = colorCache.get(colorStr);
    if (cached) {
        return copyRgba(rgbaArr, cached);
    }

    // colorStr may be not string
    colorStr = colorStr + '';
    // Remove all whitespace, not compliant, but should just be more accepting.
    var str = colorStr.replace(/ /g, '').toLowerCase();

    // Color keywords (and transparent) lookup.
    if (str in kCSSColorTable) {
        copyRgba(rgbaArr, kCSSColorTable[str]);
        putToCache(colorStr, rgbaArr);
        return rgbaArr;
    }

    // #abc and #abc123 syntax.
    if (str.charAt(0) === '#') {
        if (str.length === 4) {
            var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
            if (!(iv >= 0 && iv <= 0xfff)) {
                setRgba(rgbaArr, 0, 0, 0, 1);
                return;  // Covers NaN.
            }
            setRgba(rgbaArr,
                ((iv & 0xf00) >> 4) | ((iv & 0xf00) >> 8),
                (iv & 0xf0) | ((iv & 0xf0) >> 4),
                (iv & 0xf) | ((iv & 0xf) << 4),
                1
            );
            putToCache(colorStr, rgbaArr);
            return rgbaArr;
        }
        else if (str.length === 7) {
            var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
            if (!(iv >= 0 && iv <= 0xffffff)) {
                setRgba(rgbaArr, 0, 0, 0, 1);
                return;  // Covers NaN.
            }
            setRgba(rgbaArr,
                (iv & 0xff0000) >> 16,
                (iv & 0xff00) >> 8,
                iv & 0xff,
                1
            );
            putToCache(colorStr, rgbaArr);
            return rgbaArr;
        }

        return;
    }
    var op = str.indexOf('('), ep = str.indexOf(')');
    if (op !== -1 && ep + 1 === str.length) {
        var fname = str.substr(0, op);
        var params = str.substr(op + 1, ep - (op + 1)).split(',');
        var alpha = 1;  // To allow case fallthrough.
        switch (fname) {
            case 'rgba':
                if (params.length !== 4) {
                    setRgba(rgbaArr, 0, 0, 0, 1);
                    return;
                }
                alpha = parseCssFloat(params.pop()); // jshint ignore:line
            // Fall through.
            case 'rgb':
                if (params.length !== 3) {
                    setRgba(rgbaArr, 0, 0, 0, 1);
                    return;
                }
                setRgba(rgbaArr,
                    parseCssInt(params[0]),
                    parseCssInt(params[1]),
                    parseCssInt(params[2]),
                    alpha
                );
                putToCache(colorStr, rgbaArr);
                return rgbaArr;
            case 'hsla':
                if (params.length !== 4) {
                    setRgba(rgbaArr, 0, 0, 0, 1);
                    return;
                }
                params[3] = parseCssFloat(params[3]);
                hsla2rgba(params, rgbaArr);
                putToCache(colorStr, rgbaArr);
                return rgbaArr;
            case 'hsl':
                if (params.length !== 3) {
                    setRgba(rgbaArr, 0, 0, 0, 1);
                    return;
                }
                hsla2rgba(params, rgbaArr);
                putToCache(colorStr, rgbaArr);
                return rgbaArr;
            default:
                return;
        }
    }

    setRgba(rgbaArr, 0, 0, 0, 1);
    return;
}

/**
 * @param {Array.<number>} hsla
 * @param {Array.<number>} rgba
 * @return {Array.<number>} rgba
 */
function hsla2rgba(hsla, rgba) {
    var h = (((parseFloat(hsla[0]) % 360) + 360) % 360) / 360;  // 0 .. 1
    // NOTE(deanm): According to the CSS spec s/l should only be
    // percentages, but we don't bother and let float or percentage.
    var s = parseCssFloat(hsla[1]);
    var l = parseCssFloat(hsla[2]);
    var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s;
    var m1 = l * 2 - m2;

    rgba = rgba || [];
    setRgba(rgba,
        clampCssByte(cssHueToRgb(m1, m2, h + 1 / 3) * 255),
        clampCssByte(cssHueToRgb(m1, m2, h) * 255),
        clampCssByte(cssHueToRgb(m1, m2, h - 1 / 3) * 255),
        1
    );

    if (hsla.length === 4) {
        rgba[3] = hsla[3];
    }

    return rgba;
}

/**
 * @param {string} color
 * @param {number} level
 * @return {string}
 * @memberOf module:zrender/util/color
 */
function lift(color, level) {
    var colorArr = parse(color);
    if (colorArr) {
        for (var i = 0; i < 3; i++) {
            if (level < 0) {
                colorArr[i] = colorArr[i] * (1 - level) | 0;
            }
            else {
                colorArr[i] = ((255 - colorArr[i]) * level + colorArr[i]) | 0;
            }
            if (colorArr[i] > 255) {
                colorArr[i] = 255;
            }
            else if (color[i] < 0) {
                colorArr[i] = 0;
            }
        }
        return stringify(colorArr, colorArr.length === 4 ? 'rgba' : 'rgb');
    }
}

/**
 * @param {string} color
 * @return {string}
 * @memberOf module:zrender/util/color
 */


/**
 * Map value to color. Faster than lerp methods because color is represented by rgba array.
 * @param {number} normalizedValue A float between 0 and 1.
 * @param {Array.<Array.<number>>} colors List of rgba color array
 * @param {Array.<number>} [out] Mapped gba color array
 * @return {Array.<number>} will be null/undefined if input illegal.
 */


/**
 * @deprecated
 */


/**
 * @param {number} normalizedValue A float between 0 and 1.
 * @param {Array.<string>} colors Color list.
 * @param {boolean=} fullOutput Default false.
 * @return {(string|Object)} Result color. If fullOutput,
 *                           return {color: ..., leftIndex: ..., rightIndex: ..., value: ...},
 * @memberOf module:zrender/util/color
 */


/**
 * @deprecated
 */


/**
 * @param {string} color
 * @param {number=} h 0 ~ 360, ignore when null.
 * @param {number=} s 0 ~ 1, ignore when null.
 * @param {number=} l 0 ~ 1, ignore when null.
 * @return {string} Color string in rgba format.
 * @memberOf module:zrender/util/color
 */


/**
 * @param {string} color
 * @param {number=} alpha 0 ~ 1
 * @return {string} Color string in rgba format.
 * @memberOf module:zrender/util/color
 */


/**
 * @param {Array.<number>} arrColor like [12,33,44,0.4]
 * @param {string} type 'rgba', 'hsva', ...
 * @return {string} Result color. (If input illegal, return undefined).
 */
function stringify(arrColor, type) {
    if (!arrColor || !arrColor.length) {
        return;
    }
    var colorStr = arrColor[0] + ',' + arrColor[1] + ',' + arrColor[2];
    if (type === 'rgba' || type === 'hsva' || type === 'hsla') {
        colorStr += ',' + arrColor[3];
    }
    return type + '(' + colorStr + ')';
}

/**
 * @module echarts/animation/Animator
 */

var arraySlice = Array.prototype.slice;

function defaultGetter(target, key) {
    return target[key];
}

function defaultSetter(target, key, value) {
    target[key] = value;
}

/**
 * @param  {number} p0
 * @param  {number} p1
 * @param  {number} percent
 * @return {number}
 */
function interpolateNumber(p0, p1, percent) {
    return (p1 - p0) * percent + p0;
}

/**
 * @param  {string} p0
 * @param  {string} p1
 * @param  {number} percent
 * @return {string}
 */
function interpolateString(p0, p1, percent) {
    return percent > 0.5 ? p1 : p0;
}

/**
 * @param  {Array} p0
 * @param  {Array} p1
 * @param  {number} percent
 * @param  {Array} out
 * @param  {number} arrDim
 */
function interpolateArray(p0, p1, percent, out, arrDim) {
    var len = p0.length;
    if (arrDim == 1) {
        for (var i = 0; i < len; i++) {
            out[i] = interpolateNumber(p0[i], p1[i], percent);
        }
    }
    else {
        var len2 = len && p0[0].length;
        for (var i = 0; i < len; i++) {
            for (var j = 0; j < len2; j++) {
                out[i][j] = interpolateNumber(
                    p0[i][j], p1[i][j], percent
                );
            }
        }
    }
}

// arr0 is source array, arr1 is target array.
// Do some preprocess to avoid error happened when interpolating from arr0 to arr1
function fillArr(arr0, arr1, arrDim) {
    var arr0Len = arr0.length;
    var arr1Len = arr1.length;
    if (arr0Len !== arr1Len) {
        // FIXME Not work for TypedArray
        var isPreviousLarger = arr0Len > arr1Len;
        if (isPreviousLarger) {
            // Cut the previous
            arr0.length = arr1Len;
        }
        else {
            // Fill the previous
            for (var i = arr0Len; i < arr1Len; i++) {
                arr0.push(
                    arrDim === 1 ? arr1[i] : arraySlice.call(arr1[i])
                );
            }
        }
    }
    // Handling NaN value
    var len2 = arr0[0] && arr0[0].length;
    for (var i = 0; i < arr0.length; i++) {
        if (arrDim === 1) {
            if (isNaN(arr0[i])) {
                arr0[i] = arr1[i];
            }
        }
        else {
            for (var j = 0; j < len2; j++) {
                if (isNaN(arr0[i][j])) {
                    arr0[i][j] = arr1[i][j];
                }
            }
        }
    }
}

/**
 * @param  {Array} arr0
 * @param  {Array} arr1
 * @param  {number} arrDim
 * @return {boolean}
 */
function isArraySame(arr0, arr1, arrDim) {
    if (arr0 === arr1) {
        return true;
    }
    var len = arr0.length;
    if (len !== arr1.length) {
        return false;
    }
    if (arrDim === 1) {
        for (var i = 0; i < len; i++) {
            if (arr0[i] !== arr1[i]) {
                return false;
            }
        }
    }
    else {
        var len2 = arr0[0].length;
        for (var i = 0; i < len; i++) {
            for (var j = 0; j < len2; j++) {
                if (arr0[i][j] !== arr1[i][j]) {
                    return false;
                }
            }
        }
    }
    return true;
}

/**
 * Catmull Rom interpolate array
 * @param  {Array} p0
 * @param  {Array} p1
 * @param  {Array} p2
 * @param  {Array} p3
 * @param  {number} t
 * @param  {number} t2
 * @param  {number} t3
 * @param  {Array} out
 * @param  {number} arrDim
 */
function catmullRomInterpolateArray(
    p0, p1, p2, p3, t, t2, t3, out, arrDim
) {
    var len = p0.length;
    if (arrDim == 1) {
        for (var i = 0; i < len; i++) {
            out[i] = catmullRomInterpolate(
                p0[i], p1[i], p2[i], p3[i], t, t2, t3
            );
        }
    }
    else {
        var len2 = p0[0].length;
        for (var i = 0; i < len; i++) {
            for (var j = 0; j < len2; j++) {
                out[i][j] = catmullRomInterpolate(
                    p0[i][j], p1[i][j], p2[i][j], p3[i][j],
                    t, t2, t3
                );
            }
        }
    }
}

/**
 * Catmull Rom interpolate number
 * @param  {number} p0
 * @param  {number} p1
 * @param  {number} p2
 * @param  {number} p3
 * @param  {number} t
 * @param  {number} t2
 * @param  {number} t3
 * @return {number}
 */
function catmullRomInterpolate(p0, p1, p2, p3, t, t2, t3) {
    var v0 = (p2 - p0) * 0.5;
    var v1 = (p3 - p1) * 0.5;
    return (2 * (p1 - p2) + v0 + v1) * t3
            + (-3 * (p1 - p2) - 2 * v0 - v1) * t2
            + v0 * t + p1;
}

function cloneValue(value) {
    if (isArrayLike(value)) {
        var len = value.length;
        if (isArrayLike(value[0])) {
            var ret = [];
            for (var i = 0; i < len; i++) {
                ret.push(arraySlice.call(value[i]));
            }
            return ret;
        }

        return arraySlice.call(value);
    }

    return value;
}

function rgba2String(rgba) {
    rgba[0] = Math.floor(rgba[0]);
    rgba[1] = Math.floor(rgba[1]);
    rgba[2] = Math.floor(rgba[2]);

    return 'rgba(' + rgba.join(',') + ')';
}

function getArrayDim(keyframes) {
    var lastValue = keyframes[keyframes.length - 1].value;
    return isArrayLike(lastValue && lastValue[0]) ? 2 : 1;
}

function createTrackClip(animator, easing, oneTrackDone, keyframes, propName, forceAnimate) {
    var getter = animator._getter;
    var setter = animator._setter;
    var useSpline = easing === 'spline';

    var trackLen = keyframes.length;
    if (!trackLen) {
        return;
    }
    // Guess data type
    var firstVal = keyframes[0].value;
    var isValueArray = isArrayLike(firstVal);
    var isValueColor = false;
    var isValueString = false;

    // For vertices morphing
    var arrDim = isValueArray ? getArrayDim(keyframes) : 0;

    var trackMaxTime;
    // Sort keyframe as ascending
    keyframes.sort(function(a, b) {
        return a.time - b.time;
    });

    trackMaxTime = keyframes[trackLen - 1].time;
    // Percents of each keyframe
    var kfPercents = [];
    // Value of each keyframe
    var kfValues = [];
    var prevValue = keyframes[0].value;
    var isAllValueEqual = true;
    for (var i = 0; i < trackLen; i++) {
        kfPercents.push(keyframes[i].time / trackMaxTime);
        // Assume value is a color when it is a string
        var value = keyframes[i].value;

        // Check if value is equal, deep check if value is array
        if (!((isValueArray && isArraySame(value, prevValue, arrDim))
            || (!isValueArray && value === prevValue))) {
            isAllValueEqual = false;
        }
        prevValue = value;

        // Try converting a string to a color array
        if (typeof value == 'string') {
            var colorArray = parse(value);
            if (colorArray) {
                value = colorArray;
                isValueColor = true;
            }
            else {
                isValueString = true;
            }
        }
        kfValues.push(value);
    }
    if (!forceAnimate && isAllValueEqual) {
        return;
    }

    var lastValue = kfValues[trackLen - 1];
    // Polyfill array and NaN value
    for (var i = 0; i < trackLen - 1; i++) {
        if (isValueArray) {
            fillArr(kfValues[i], lastValue, arrDim);
        }
        else {
            if (isNaN(kfValues[i]) && !isNaN(lastValue) && !isValueString && !isValueColor) {
                kfValues[i] = lastValue;
            }
        }
    }
    isValueArray && fillArr(getter(animator._target, propName), lastValue, arrDim);

    // Cache the key of last frame to speed up when
    // animation playback is sequency
    var lastFrame = 0;
    var lastFramePercent = 0;
    var start;
    var w;
    var p0;
    var p1;
    var p2;
    var p3;

    if (isValueColor) {
        var rgba = [0, 0, 0, 0];
    }

    var onframe = function (target, percent) {
        // Find the range keyframes
        // kf1-----kf2---------current--------kf3
        // find kf2 and kf3 and do interpolation
        var frame;
        // In the easing function like elasticOut, percent may less than 0
        if (percent < 0) {
            frame = 0;
        }
        else if (percent < lastFramePercent) {
            // Start from next key
            // PENDING start from lastFrame ?
            start = Math.min(lastFrame + 1, trackLen - 1);
            for (frame = start; frame >= 0; frame--) {
                if (kfPercents[frame] <= percent) {
                    break;
                }
            }
            // PENDING really need to do this ?
            frame = Math.min(frame, trackLen - 2);
        }
        else {
            for (frame = lastFrame; frame < trackLen; frame++) {
                if (kfPercents[frame] > percent) {
                    break;
                }
            }
            frame = Math.min(frame - 1, trackLen - 2);
        }
        lastFrame = frame;
        lastFramePercent = percent;

        var range = (kfPercents[frame + 1] - kfPercents[frame]);
        if (range === 0) {
            return;
        }
        else {
            w = (percent - kfPercents[frame]) / range;
        }
        if (useSpline) {
            p1 = kfValues[frame];
            p0 = kfValues[frame === 0 ? frame : frame - 1];
            p2 = kfValues[frame > trackLen - 2 ? trackLen - 1 : frame + 1];
            p3 = kfValues[frame > trackLen - 3 ? trackLen - 1 : frame + 2];
            if (isValueArray) {
                catmullRomInterpolateArray(
                    p0, p1, p2, p3, w, w * w, w * w * w,
                    getter(target, propName),
                    arrDim
                );
            }
            else {
                var value;
                if (isValueColor) {
                    value = catmullRomInterpolateArray(
                        p0, p1, p2, p3, w, w * w, w * w * w,
                        rgba, 1
                    );
                    value = rgba2String(rgba);
                }
                else if (isValueString) {
                    // String is step(0.5)
                    return interpolateString(p1, p2, w);
                }
                else {
                    value = catmullRomInterpolate(
                        p0, p1, p2, p3, w, w * w, w * w * w
                    );
                }
                setter(
                    target,
                    propName,
                    value
                );
            }
        }
        else {
            if (isValueArray) {
                interpolateArray(
                    kfValues[frame], kfValues[frame + 1], w,
                    getter(target, propName),
                    arrDim
                );
            }
            else {
                var value;
                if (isValueColor) {
                    interpolateArray(
                        kfValues[frame], kfValues[frame + 1], w,
                        rgba, 1
                    );
                    value = rgba2String(rgba);
                }
                else if (isValueString) {
                    // String is step(0.5)
                    return interpolateString(kfValues[frame], kfValues[frame + 1], w);
                }
                else {
                    value = interpolateNumber(kfValues[frame], kfValues[frame + 1], w);
                }
                setter(
                    target,
                    propName,
                    value
                );
            }
        }
    };

    var clip = new Clip({
        target: animator._target,
        life: trackMaxTime,
        loop: animator._loop,
        delay: animator._delay,
        onframe: onframe,
        ondestroy: oneTrackDone
    });

    if (easing && easing !== 'spline') {
        clip.easing = easing;
    }

    return clip;
}

/**
 * @alias module:zrender/animation/Animator
 * @constructor
 * @param {Object} target
 * @param {boolean} loop
 * @param {Function} getter
 * @param {Function} setter
 */
var Animator = function(target, loop, getter, setter) {
    this._tracks = {};
    this._target = target;

    this._loop = loop || false;

    this._getter = getter || defaultGetter;
    this._setter = setter || defaultSetter;

    this._clipCount = 0;

    this._delay = 0;

    this._doneList = [];

    this._onframeList = [];

    this._clipList = [];
};

Animator.prototype = {
    /**
     * 设置动画关键帧
     * @param  {number} time 关键帧时间，单位是ms
     * @param  {Object} props 关键帧的属性值，key-value表示
     * @return {module:zrender/animation/Animator}
     */
    when: function(time /* ms */, props) {
        var tracks = this._tracks;
        for (var propName in props) {
            if (!props.hasOwnProperty(propName)) {
                continue;
            }

            if (!tracks[propName]) {
                tracks[propName] = [];
                // Invalid value
                var value = this._getter(this._target, propName);
                if (value == null) {
                    // zrLog('Invalid property ' + propName);
                    continue;
                }
                // If time is 0
                //  Then props is given initialize value
                // Else
                //  Initialize value from current prop value
                if (time !== 0) {
                    tracks[propName].push({
                        time: 0,
                        value: cloneValue(value)
                    });
                }
            }
            tracks[propName].push({
                time: time,
                value: props[propName]
            });
        }
        return this;
    },
    /**
     * 添加动画每一帧的回调函数
     * @param  {Function} callback
     * @return {module:zrender/animation/Animator}
     */
    during: function (callback) {
        this._onframeList.push(callback);
        return this;
    },

    pause: function () {
        for (var i = 0; i < this._clipList.length; i++) {
            this._clipList[i].pause();
        }
        this._paused = true;
    },

    resume: function () {
        for (var i = 0; i < this._clipList.length; i++) {
            this._clipList[i].resume();
        }
        this._paused = false;
    },

    isPaused: function () {
        return !!this._paused;
    },

    _doneCallback: function () {
        // Clear all tracks
        this._tracks = {};
        // Clear all clips
        this._clipList.length = 0;

        var doneList = this._doneList;
        var len = doneList.length;
        for (var i = 0; i < len; i++) {
            doneList[i].call(this);
        }
    },
    /**
     * 开始执行动画
     * @param  {string|Function} [easing]
     *         动画缓动函数，详见{@link module:zrender/animation/easing}
     * @param  {boolean} forceAnimate
     * @return {module:zrender/animation/Animator}
     */
    start: function (easing, forceAnimate) {

        var self = this;
        var clipCount = 0;

        var oneTrackDone = function() {
            clipCount--;
            if (!clipCount) {
                self._doneCallback();
            }
        };

        var lastClip;
        for (var propName in this._tracks) {
            if (!this._tracks.hasOwnProperty(propName)) {
                continue;
            }
            var clip = createTrackClip(
                this, easing, oneTrackDone,
                this._tracks[propName], propName, forceAnimate
            );
            if (clip) {
                this._clipList.push(clip);
                clipCount++;

                // If start after added to animation
                if (this.animation) {
                    this.animation.addClip(clip);
                }

                lastClip = clip;
            }
        }

        // Add during callback on the last clip
        if (lastClip) {
            var oldOnFrame = lastClip.onframe;
            lastClip.onframe = function (target, percent) {
                oldOnFrame(target, percent);

                for (var i = 0; i < self._onframeList.length; i++) {
                    self._onframeList[i](target, percent);
                }
            };
        }

        // This optimization will help the case that in the upper application
        // the view may be refreshed frequently, where animation will be
        // called repeatly but nothing changed.
        if (!clipCount) {
            this._doneCallback();
        }
        return this;
    },
    /**
     * 停止动画
     * @param {boolean} forwardToLast If move to last frame before stop
     */
    stop: function (forwardToLast) {
        var clipList = this._clipList;
        var animation = this.animation;
        for (var i = 0; i < clipList.length; i++) {
            var clip = clipList[i];
            if (forwardToLast) {
                // Move to last frame before stop
                clip.onframe(this._target, 1);
            }
            animation && animation.removeClip(clip);
        }
        clipList.length = 0;
    },
    /**
     * 设置动画延迟开始的时间
     * @param  {number} time 单位ms
     * @return {module:zrender/animation/Animator}
     */
    delay: function (time) {
        this._delay = time;
        return this;
    },
    /**
     * 添加动画结束的回调
     * @param  {Function} cb
     * @return {module:zrender/animation/Animator}
     */
    done: function(cb) {
        if (cb) {
            this._doneList.push(cb);
        }
        return this;
    },

    /**
     * @return {Array.<module:zrender/animation/Clip>}
     */
    getClips: function () {
        return this._clipList;
    }
};

var dpr = 1;

// If in browser environment
if (typeof window !== 'undefined') {
    dpr = Math.max(window.devicePixelRatio || 1, 1);
}

/**
 * config默认配置项
 * @exports zrender/config
 * @author Kener (@Kener-林峰, kener.linfeng@gmail.com)
 */

/**
 * debug日志选项：catchBrushException为true下有效
 * 0 : 不生成debug数据，发布用
 * 1 : 异常抛出，调试用
 * 2 : 控制台输出，调试用
 */
var debugMode = 0;

// retina 屏幕优化
var devicePixelRatio = dpr;

var log = function () {
};

if (debugMode === 1) {
    log = function () {
        for (var k in arguments) {
            throw new Error(arguments[k]);
        }
    };
}
else if (debugMode > 1) {
    log = function () {
        for (var k in arguments) {
            console.log(arguments[k]);
        }
    };
}

var log$1 = log;

/**
 * @alias modue:zrender/mixin/Animatable
 * @constructor
 */
var Animatable = function () {

    /**
     * @type {Array.<module:zrender/animation/Animator>}
     * @readOnly
     */
    this.animators = [];
};

Animatable.prototype = {

    constructor: Animatable,

    /**
     * 动画
     *
     * @param {string} path The path to fetch value from object, like 'a.b.c'.
     * @param {boolean} [loop] Whether to loop animation.
     * @return {module:zrender/animation/Animator}
     * @example:
     *     el.animate('style', false)
     *         .when(1000, {x: 10} )
     *         .done(function(){ // Animation done })
     *         .start()
     */
    animate: function (path, loop) {
        var target;
        var animatingShape = false;
        var el = this;
        var zr = this.__zr;
        if (path) {
            var pathSplitted = path.split('.');
            var prop = el;
            // If animating shape
            animatingShape = pathSplitted[0] === 'shape';
            for (var i = 0, l = pathSplitted.length; i < l; i++) {
                if (!prop) {
                    continue;
                }
                prop = prop[pathSplitted[i]];
            }
            if (prop) {
                target = prop;
            }
        }
        else {
            target = el;
        }

        if (!target) {
            log$1(
                'Property "'
                + path
                + '" is not existed in element '
                + el.id
            );
            return;
        }

        var animators = el.animators;

        var animator = new Animator(target, loop);

        animator.during(function (target) {
            el.dirty(animatingShape);
        })
        .done(function () {
            // FIXME Animator will not be removed if use `Animator#stop` to stop animation
            animators.splice(indexOf(animators, animator), 1);
        });

        animators.push(animator);

        // If animate after added to the zrender
        if (zr) {
            zr.animation.addAnimator(animator);
        }

        return animator;
    },

    /**
     * 停止动画
     * @param {boolean} forwardToLast If move to last frame before stop
     */
    stopAnimation: function (forwardToLast) {
        var animators = this.animators;
        var len = animators.length;
        for (var i = 0; i < len; i++) {
            animators[i].stop(forwardToLast);
        }
        animators.length = 0;

        return this;
    },

    /**
     * Caution: this method will stop previous animation.
     * So do not use this method to one element twice before
     * animation starts, unless you know what you are doing.
     * @param {Object} target
     * @param {number} [time=500] Time in ms
     * @param {string} [easing='linear']
     * @param {number} [delay=0]
     * @param {Function} [callback]
     * @param {Function} [forceAnimate] Prevent stop animation and callback
     *        immediently when target values are the same as current values.
     *
     * @example
     *  // Animate position
     *  el.animateTo({
     *      position: [10, 10]
     *  }, function () { // done })
     *
     *  // Animate shape, style and position in 100ms, delayed 100ms, with cubicOut easing
     *  el.animateTo({
     *      shape: {
     *          width: 500
     *      },
     *      style: {
     *          fill: 'red'
     *      }
     *      position: [10, 10]
     *  }, 100, 100, 'cubicOut', function () { // done })
     */
        // TODO Return animation key
    animateTo: function (target, time, delay, easing, callback, forceAnimate) {
        // animateTo(target, time, easing, callback);
        if (isString(delay)) {
            callback = easing;
            easing = delay;
            delay = 0;
        }
        // animateTo(target, time, delay, callback);
        else if (isFunction$1(easing)) {
            callback = easing;
            easing = 'linear';
            delay = 0;
        }
        // animateTo(target, time, callback);
        else if (isFunction$1(delay)) {
            callback = delay;
            delay = 0;
        }
        // animateTo(target, callback)
        else if (isFunction$1(time)) {
            callback = time;
            time = 500;
        }
        // animateTo(target)
        else if (!time) {
            time = 500;
        }
        // Stop all previous animations
        this.stopAnimation();
        this._animateToShallow('', this, target, time, delay);

        // Animators may be removed immediately after start
        // if there is nothing to animate
        var animators = this.animators.slice();
        var count = animators.length;
        function done() {
            count--;
            if (!count) {
                callback && callback();
            }
        }

        // No animators. This should be checked before animators[i].start(),
        // because 'done' may be executed immediately if no need to animate.
        if (!count) {
            callback && callback();
        }
        // Start after all animators created
        // Incase any animator is done immediately when all animation properties are not changed
        for (var i = 0; i < animators.length; i++) {
            animators[i]
                .done(done)
                .start(easing, forceAnimate);
        }
    },

    /**
     * @private
     * @param {string} path=''
     * @param {Object} source=this
     * @param {Object} target
     * @param {number} [time=500]
     * @param {number} [delay=0]
     *
     * @example
     *  // Animate position
     *  el._animateToShallow({
     *      position: [10, 10]
     *  })
     *
     *  // Animate shape, style and position in 100ms, delayed 100ms
     *  el._animateToShallow({
     *      shape: {
     *          width: 500
     *      },
     *      style: {
     *          fill: 'red'
     *      }
     *      position: [10, 10]
     *  }, 100, 100)
     */
    _animateToShallow: function (path, source, target, time, delay) {
        var objShallow = {};
        var propertyCount = 0;
        for (var name in target) {
            if (!target.hasOwnProperty(name)) {
                continue;
            }

            if (source[name] != null) {
                if (isObject$1(target[name]) && !isArrayLike(target[name])) {
                    this._animateToShallow(
                        path ? path + '.' + name : name,
                        source[name],
                        target[name],
                        time,
                        delay
                    );
                }
                else {
                    objShallow[name] = target[name];
                    propertyCount++;
                }
            }
            else if (target[name] != null) {
                // Attr directly if not has property
                // FIXME, if some property not needed for element ?
                if (!path) {
                    this.attr(name, target[name]);
                }
                else {  // Shape or style
                    var props = {};
                    props[path] = {};
                    props[path][name] = target[name];
                    this.attr(props);
                }
            }
        }

        if (propertyCount > 0) {
            this.animate(path, false)
                .when(time == null ? 500 : time, objShallow)
                .delay(delay || 0);
        }

        return this;
    }
};

/**
 * @alias module:zrender/Element
 * @constructor
 * @extends {module:zrender/mixin/Animatable}
 * @extends {module:zrender/mixin/Transformable}
 * @extends {module:zrender/mixin/Eventful}
 */
var Element = function (opts) { // jshint ignore:line

    Transformable.call(this, opts);
    Eventful.call(this, opts);
    Animatable.call(this, opts);

    /**
     * 画布元素ID
     * @type {string}
     */
    this.id = opts.id || guid();
};

Element.prototype = {

    /**
     * 元素类型
     * Element type
     * @type {string}
     */
    type: 'element',

    /**
     * 元素名字
     * Element name
     * @type {string}
     */
    name: '',

    /**
     * ZRender 实例对象，会在 element 添加到 zrender 实例中后自动赋值
     * ZRender instance will be assigned when element is associated with zrender
     * @name module:/zrender/Element#__zr
     * @type {module:zrender/ZRender}
     */
    __zr: null,

    /**
     * 图形是否忽略，为true时忽略图形的绘制以及事件触发
     * If ignore drawing and events of the element object
     * @name module:/zrender/Element#ignore
     * @type {boolean}
     * @default false
     */
    ignore: false,

    /**
     * 用于裁剪的路径(shape)，所有 Group 内的路径在绘制时都会被这个路径裁剪
     * 该路径会继承被裁减对象的变换
     * @type {module:zrender/graphic/Path}
     * @see http://www.w3.org/TR/2dcontext/#clipping-region
     * @readOnly
     */
    clipPath: null,

    /**
     * 是否是 Group
     * @type {boolean}
     */
    isGroup: false,

    /**
     * Drift element
     * @param  {number} dx dx on the global space
     * @param  {number} dy dy on the global space
     */
    drift: function (dx, dy) {
        switch (this.draggable) {
            case 'horizontal':
                dy = 0;
                break;
            case 'vertical':
                dx = 0;
                break;
        }

        var m = this.transform;
        if (!m) {
            m = this.transform = [1, 0, 0, 1, 0, 0];
        }
        m[4] += dx;
        m[5] += dy;

        this.decomposeTransform();
        this.dirty(false);
    },

    /**
     * Hook before update
     */
    beforeUpdate: function () {},
    /**
     * Hook after update
     */
    afterUpdate: function () {},
    /**
     * Update each frame
     */
    update: function () {
        this.updateTransform();
    },

    /**
     * @param  {Function} cb
     * @param  {}   context
     */
    traverse: function (cb, context) {},

    /**
     * @protected
     */
    attrKV: function (key, value) {
        if (key === 'position' || key === 'scale' || key === 'origin') {
            // Copy the array
            if (value) {
                var target = this[key];
                if (!target) {
                    target = this[key] = [];
                }
                target[0] = value[0];
                target[1] = value[1];
            }
        }
        else {
            this[key] = value;
        }
    },

    /**
     * Hide the element
     */
    hide: function () {
        this.ignore = true;
        this.__zr && this.__zr.refresh();
    },

    /**
     * Show the element
     */
    show: function () {
        this.ignore = false;
        this.__zr && this.__zr.refresh();
    },

    /**
     * @param {string|Object} key
     * @param {*} value
     */
    attr: function (key, value) {
        if (typeof key === 'string') {
            this.attrKV(key, value);
        }
        else if (isObject$1(key)) {
            for (var name in key) {
                if (key.hasOwnProperty(name)) {
                    this.attrKV(name, key[name]);
                }
            }
        }

        this.dirty(false);

        return this;
    },

    /**
     * @param {module:zrender/graphic/Path} clipPath
     */
    setClipPath: function (clipPath) {
        var zr = this.__zr;
        if (zr) {
            clipPath.addSelfToZr(zr);
        }

        // Remove previous clip path
        if (this.clipPath && this.clipPath !== clipPath) {
            this.removeClipPath();
        }

        this.clipPath = clipPath;
        clipPath.__zr = zr;
        clipPath.__clipTarget = this;

        this.dirty(false);
    },

    /**
     */
    removeClipPath: function () {
        var clipPath = this.clipPath;
        if (clipPath) {
            if (clipPath.__zr) {
                clipPath.removeSelfFromZr(clipPath.__zr);
            }

            clipPath.__zr = null;
            clipPath.__clipTarget = null;
            this.clipPath = null;

            this.dirty(false);
        }
    },

    /**
     * Add self from zrender instance.
     * Not recursively because it will be invoked when element added to storage.
     * @param {module:zrender/ZRender} zr
     */
    addSelfToZr: function (zr) {
        this.__zr = zr;
        // 添加动画
        var animators = this.animators;
        if (animators) {
            for (var i = 0; i < animators.length; i++) {
                zr.animation.addAnimator(animators[i]);
            }
        }

        if (this.clipPath) {
            this.clipPath.addSelfToZr(zr);
        }
    },

    /**
     * Remove self from zrender instance.
     * Not recursively because it will be invoked when element added to storage.
     * @param {module:zrender/ZRender} zr
     */
    removeSelfFromZr: function (zr) {
        this.__zr = null;
        // 移除动画
        var animators = this.animators;
        if (animators) {
            for (var i = 0; i < animators.length; i++) {
                zr.animation.removeAnimator(animators[i]);
            }
        }

        if (this.clipPath) {
            this.clipPath.removeSelfFromZr(zr);
        }
    }
};

mixin(Element, Animatable);
mixin(Element, Transformable);
mixin(Element, Eventful);

/**
 * @module echarts/core/BoundingRect
 */

var v2ApplyTransform = applyTransform;
var mathMin = Math.min;
var mathMax = Math.max;

/**
 * @alias module:echarts/core/BoundingRect
 */
function BoundingRect(x, y, width, height) {

    if (width < 0) {
        x = x + width;
        width = -width;
    }
    if (height < 0) {
        y = y + height;
        height = -height;
    }

    /**
     * @type {number}
     */
    this.x = x;
    /**
     * @type {number}
     */
    this.y = y;
    /**
     * @type {number}
     */
    this.width = width;
    /**
     * @type {number}
     */
    this.height = height;
}

BoundingRect.prototype = {

    constructor: BoundingRect,

    /**
     * @param {module:echarts/core/BoundingRect} other
     */
    union: function (other) {
        var x = mathMin(other.x, this.x);
        var y = mathMin(other.y, this.y);

        this.width = mathMax(
                other.x + other.width,
                this.x + this.width
            ) - x;
        this.height = mathMax(
                other.y + other.height,
                this.y + this.height
            ) - y;
        this.x = x;
        this.y = y;
    },

    /**
     * @param {Array.<number>} m
     * @methods
     */
    applyTransform: (function () {
        var lt = [];
        var rb = [];
        var lb = [];
        var rt = [];
        return function (m) {
            // In case usage like this
            // el.getBoundingRect().applyTransform(el.transform)
            // And element has no transform
            if (!m) {
                return;
            }
            lt[0] = lb[0] = this.x;
            lt[1] = rt[1] = this.y;
            rb[0] = rt[0] = this.x + this.width;
            rb[1] = lb[1] = this.y + this.height;

            v2ApplyTransform(lt, lt, m);
            v2ApplyTransform(rb, rb, m);
            v2ApplyTransform(lb, lb, m);
            v2ApplyTransform(rt, rt, m);

            this.x = mathMin(lt[0], rb[0], lb[0], rt[0]);
            this.y = mathMin(lt[1], rb[1], lb[1], rt[1]);
            var maxX = mathMax(lt[0], rb[0], lb[0], rt[0]);
            var maxY = mathMax(lt[1], rb[1], lb[1], rt[1]);
            this.width = maxX - this.x;
            this.height = maxY - this.y;
        };
    })(),

    /**
     * Calculate matrix of transforming from self to target rect
     * @param  {module:zrender/core/BoundingRect} b
     * @return {Array.<number>}
     */
    calculateTransform: function (b) {
        var a = this;
        var sx = b.width / a.width;
        var sy = b.height / a.height;

        var m = create$1();

        // 矩阵右乘
        translate(m, m, [-a.x, -a.y]);
        scale$1(m, m, [sx, sy]);
        translate(m, m, [b.x, b.y]);

        return m;
    },

    /**
     * @param {(module:echarts/core/BoundingRect|Object)} b
     * @return {boolean}
     */
    intersect: function (b) {
        if (!b) {
            return false;
        }

        if (!(b instanceof BoundingRect)) {
            // Normalize negative width/height.
            b = BoundingRect.create(b);
        }

        var a = this;
        var ax0 = a.x;
        var ax1 = a.x + a.width;
        var ay0 = a.y;
        var ay1 = a.y + a.height;

        var bx0 = b.x;
        var bx1 = b.x + b.width;
        var by0 = b.y;
        var by1 = b.y + b.height;

        return ! (ax1 < bx0 || bx1 < ax0 || ay1 < by0 || by1 < ay0);
    },

    contain: function (x, y) {
        var rect = this;
        return x >= rect.x
            && x <= (rect.x + rect.width)
            && y >= rect.y
            && y <= (rect.y + rect.height);
    },

    /**
     * @return {module:echarts/core/BoundingRect}
     */
    clone: function () {
        return new BoundingRect(this.x, this.y, this.width, this.height);
    },

    /**
     * Copy from another rect
     */
    copy: function (other) {
        this.x = other.x;
        this.y = other.y;
        this.width = other.width;
        this.height = other.height;
    },

    plain: function () {
        return {
            x: this.x,
            y: this.y,
            width: this.width,
            height: this.height
        };
    }
};

/**
 * @param {Object|module:zrender/core/BoundingRect} rect
 * @param {number} rect.x
 * @param {number} rect.y
 * @param {number} rect.width
 * @param {number} rect.height
 * @return {module:zrender/core/BoundingRect}
 */
BoundingRect.create = function (rect) {
    return new BoundingRect(rect.x, rect.y, rect.width, rect.height);
};

/**
 * Group是一个容器，可以插入子节点，Group的变换也会被应用到子节点上
 * @module zrender/graphic/Group
 * @example
 *     var Group = require('zrender/container/Group');
 *     var Circle = require('zrender/graphic/shape/Circle');
 *     var g = new Group();
 *     g.position[0] = 100;
 *     g.position[1] = 100;
 *     g.add(new Circle({
 *         style: {
 *             x: 100,
 *             y: 100,
 *             r: 20,
 *         }
 *     }));
 *     zr.add(g);
 */

/**
 * @alias module:zrender/graphic/Group
 * @constructor
 * @extends module:zrender/mixin/Transformable
 * @extends module:zrender/mixin/Eventful
 */
var Group = function (opts) {

    opts = opts || {};

    Element.call(this, opts);

    for (var key in opts) {
        if (opts.hasOwnProperty(key)) {
            this[key] = opts[key];
        }
    }

    this._children = [];

    this.__storage = null;

    this.__dirty = true;
};

Group.prototype = {

    constructor: Group,

    isGroup: true,

    /**
     * @type {string}
     */
    type: 'group',

    /**
     * 所有子孙元素是否响应鼠标事件
     * @name module:/zrender/container/Group#silent
     * @type {boolean}
     * @default false
     */
    silent: false,

    /**
     * @return {Array.<module:zrender/Element>}
     */
    children: function () {
        return this._children.slice();
    },

    /**
     * 获取指定 index 的儿子节点
     * @param  {number} idx
     * @return {module:zrender/Element}
     */
    childAt: function (idx) {
        return this._children[idx];
    },

    /**
     * 获取指定名字的儿子节点
     * @param  {string} name
     * @return {module:zrender/Element}
     */
    childOfName: function (name) {
        var children = this._children;
        for (var i = 0; i < children.length; i++) {
            if (children[i].name === name) {
                return children[i];
            }
            }
    },

    /**
     * @return {number}
     */
    childCount: function () {
        return this._children.length;
    },

    /**
     * 添加子节点到最后
     * @param {module:zrender/Element} child
     */
    add: function (child) {
        if (child && child !== this && child.parent !== this) {

            this._children.push(child);

            this._doAdd(child);
        }

        return this;
    },

    /**
     * 添加子节点在 nextSibling 之前
     * @param {module:zrender/Element} child
     * @param {module:zrender/Element} nextSibling
     */
    addBefore: function (child, nextSibling) {
        if (child && child !== this && child.parent !== this
            && nextSibling && nextSibling.parent === this) {

            var children = this._children;
            var idx = children.indexOf(nextSibling);

            if (idx >= 0) {
                children.splice(idx, 0, child);
                this._doAdd(child);
            }
        }

        return this;
    },

    _doAdd: function (child) {
        if (child.parent) {
            child.parent.remove(child);
        }

        child.parent = this;

        var storage = this.__storage;
        var zr = this.__zr;
        if (storage && storage !== child.__storage) {

            storage.addToStorage(child);

            if (child instanceof Group) {
                child.addChildrenToStorage(storage);
            }
        }

        zr && zr.refresh();
    },

    /**
     * 移除子节点
     * @param {module:zrender/Element} child
     */
    remove: function (child) {
        var zr = this.__zr;
        var storage = this.__storage;
        var children = this._children;

        var idx = indexOf(children, child);
        if (idx < 0) {
            return this;
        }
        children.splice(idx, 1);

        child.parent = null;

        if (storage) {

            storage.delFromStorage(child);

            if (child instanceof Group) {
                child.delChildrenFromStorage(storage);
            }
        }

        zr && zr.refresh();

        return this;
    },

    /**
     * 移除所有子节点
     */
    removeAll: function () {
        var children = this._children;
        var storage = this.__storage;
        var child;
        var i;
        for (i = 0; i < children.length; i++) {
            child = children[i];
            if (storage) {
                storage.delFromStorage(child);
                if (child instanceof Group) {
                    child.delChildrenFromStorage(storage);
                }
            }
            child.parent = null;
        }
        children.length = 0;

        return this;
    },

    /**
     * 遍历所有子节点
     * @param  {Function} cb
     * @param  {}   context
     */
    eachChild: function (cb, context) {
        var children = this._children;
        for (var i = 0; i < children.length; i++) {
            var child = children[i];
            cb.call(context, child, i);
        }
        return this;
    },

    /**
     * 深度优先遍历所有子孙节点
     * @param  {Function} cb
     * @param  {}   context
     */
    traverse: function (cb, context) {
        for (var i = 0; i < this._children.length; i++) {
            var child = this._children[i];
            cb.call(context, child);

            if (child.type === 'group') {
                child.traverse(cb, context);
            }
        }
        return this;
    },

    addChildrenToStorage: function (storage) {
        for (var i = 0; i < this._children.length; i++) {
            var child = this._children[i];
            storage.addToStorage(child);
            if (child instanceof Group) {
                child.addChildrenToStorage(storage);
            }
        }
    },

    delChildrenFromStorage: function (storage) {
        for (var i = 0; i < this._children.length; i++) {
            var child = this._children[i];
            storage.delFromStorage(child);
            if (child instanceof Group) {
                child.delChildrenFromStorage(storage);
            }
        }
    },

    dirty: function () {
        this.__dirty = true;
        this.__zr && this.__zr.refresh();
        return this;
    },

    /**
     * @return {module:zrender/core/BoundingRect}
     */
    getBoundingRect: function (includeChildren) {
        // TODO Caching
        var rect = null;
        var tmpRect = new BoundingRect(0, 0, 0, 0);
        var children = includeChildren || this._children;
        var tmpMat = [];

        for (var i = 0; i < children.length; i++) {
            var child = children[i];
            if (child.ignore || child.invisible) {
                continue;
            }

            var childRect = child.getBoundingRect();
            var transform = child.getLocalTransform(tmpMat);
            // TODO
            // The boundingRect cacluated by transforming original
            // rect may be bigger than the actual bundingRect when rotation
            // is used. (Consider a circle rotated aginst its center, where
            // the actual boundingRect should be the same as that not be
            // rotated.) But we can not find better approach to calculate
            // actual boundingRect yet, considering performance.
            if (transform) {
                tmpRect.copy(childRect);
                tmpRect.applyTransform(transform);
                rect = rect || tmpRect.clone();
                rect.union(tmpRect);
            }
            else {
                rect = rect || childRect.clone();
                rect.union(childRect);
            }
        }
        return rect || tmpRect;
    }
};

inherits(Group, Element);

// https://github.com/mziccard/node-timsort
var DEFAULT_MIN_MERGE = 32;

var DEFAULT_MIN_GALLOPING = 7;

function minRunLength(n) {
    var r = 0;

    while (n >= DEFAULT_MIN_MERGE) {
        r |= n & 1;
        n >>= 1;
    }

    return n + r;
}

function makeAscendingRun(array, lo, hi, compare) {
    var runHi = lo + 1;

    if (runHi === hi) {
        return 1;
    }

    if (compare(array[runHi++], array[lo]) < 0) {
        while (runHi < hi && compare(array[runHi], array[runHi - 1]) < 0) {
            runHi++;
        }

        reverseRun(array, lo, runHi);
    }
    else {
        while (runHi < hi && compare(array[runHi], array[runHi - 1]) >= 0) {
            runHi++;
        }
    }

    return runHi - lo;
}

function reverseRun(array, lo, hi) {
    hi--;

    while (lo < hi) {
        var t = array[lo];
        array[lo++] = array[hi];
        array[hi--] = t;
    }
}

function binaryInsertionSort(array, lo, hi, start, compare) {
    if (start === lo) {
        start++;
    }

    for (; start < hi; start++) {
        var pivot = array[start];

        var left = lo;
        var right = start;
        var mid;

        while (left < right) {
            mid = left + right >>> 1;

            if (compare(pivot, array[mid]) < 0) {
                right = mid;
            }
            else {
                left = mid + 1;
            }
        }

        var n = start - left;

        switch (n) {
            case 3:
                array[left + 3] = array[left + 2];

            case 2:
                array[left + 2] = array[left + 1];

            case 1:
                array[left + 1] = array[left];
                break;
            default:
                while (n > 0) {
                    array[left + n] = array[left + n - 1];
                    n--;
                }
        }

        array[left] = pivot;
    }
}

function gallopLeft(value, array, start, length, hint, compare) {
    var lastOffset = 0;
    var maxOffset = 0;
    var offset = 1;

    if (compare(value, array[start + hint]) > 0) {
        maxOffset = length - hint;

        while (offset < maxOffset && compare(value, array[start + hint + offset]) > 0) {
            lastOffset = offset;
            offset = (offset << 1) + 1;

            if (offset <= 0) {
                offset = maxOffset;
            }
        }

        if (offset > maxOffset) {
            offset = maxOffset;
        }

        lastOffset += hint;
        offset += hint;
    }
    else {
        maxOffset = hint + 1;
        while (offset < maxOffset && compare(value, array[start + hint - offset]) <= 0) {
            lastOffset = offset;
            offset = (offset << 1) + 1;

            if (offset <= 0) {
                offset = maxOffset;
            }
        }
        if (offset > maxOffset) {
            offset = maxOffset;
        }

        var tmp = lastOffset;
        lastOffset = hint - offset;
        offset = hint - tmp;
    }

    lastOffset++;
    while (lastOffset < offset) {
        var m = lastOffset + (offset - lastOffset >>> 1);

        if (compare(value, array[start + m]) > 0) {
            lastOffset = m + 1;
        }
        else {
            offset = m;
        }
    }
    return offset;
}

function gallopRight(value, array, start, length, hint, compare) {
    var lastOffset = 0;
    var maxOffset = 0;
    var offset = 1;

    if (compare(value, array[start + hint]) < 0) {
        maxOffset = hint + 1;

        while (offset < maxOffset && compare(value, array[start + hint - offset]) < 0) {
            lastOffset = offset;
            offset = (offset << 1) + 1;

            if (offset <= 0) {
                offset = maxOffset;
            }
        }

        if (offset > maxOffset) {
            offset = maxOffset;
        }

        var tmp = lastOffset;
        lastOffset = hint - offset;
        offset = hint - tmp;
    }
    else {
        maxOffset = length - hint;

        while (offset < maxOffset && compare(value, array[start + hint + offset]) >= 0) {
            lastOffset = offset;
            offset = (offset << 1) + 1;

            if (offset <= 0) {
                offset = maxOffset;
            }
        }

        if (offset > maxOffset) {
            offset = maxOffset;
        }

        lastOffset += hint;
        offset += hint;
    }

    lastOffset++;

    while (lastOffset < offset) {
        var m = lastOffset + (offset - lastOffset >>> 1);

        if (compare(value, array[start + m]) < 0) {
            offset = m;
        }
        else {
            lastOffset = m + 1;
        }
    }

    return offset;
}

function TimSort(array, compare) {
    var minGallop = DEFAULT_MIN_GALLOPING;
    var runStart;
    var runLength;
    var stackSize = 0;

    var tmp = [];

    runStart = [];
    runLength = [];

    function pushRun(_runStart, _runLength) {
        runStart[stackSize] = _runStart;
        runLength[stackSize] = _runLength;
        stackSize += 1;
    }

    function mergeRuns() {
        while (stackSize > 1) {
            var n = stackSize - 2;

            if (n >= 1 && runLength[n - 1] <= runLength[n] + runLength[n + 1] || n >= 2 && runLength[n - 2] <= runLength[n] + runLength[n - 1]) {
                if (runLength[n - 1] < runLength[n + 1]) {
                    n--;
                }
            }
            else if (runLength[n] > runLength[n + 1]) {
                break;
            }
            mergeAt(n);
        }
    }

    function forceMergeRuns() {
        while (stackSize > 1) {
            var n = stackSize - 2;

            if (n > 0 && runLength[n - 1] < runLength[n + 1]) {
                n--;
            }

            mergeAt(n);
        }
    }

    function mergeAt(i) {
        var start1 = runStart[i];
        var length1 = runLength[i];
        var start2 = runStart[i + 1];
        var length2 = runLength[i + 1];

        runLength[i] = length1 + length2;

        if (i === stackSize - 3) {
            runStart[i + 1] = runStart[i + 2];
            runLength[i + 1] = runLength[i + 2];
        }

        stackSize--;

        var k = gallopRight(array[start2], array, start1, length1, 0, compare);
        start1 += k;
        length1 -= k;

        if (length1 === 0) {
            return;
        }

        length2 = gallopLeft(array[start1 + length1 - 1], array, start2, length2, length2 - 1, compare);

        if (length2 === 0) {
            return;
        }

        if (length1 <= length2) {
            mergeLow(start1, length1, start2, length2);
        }
        else {
            mergeHigh(start1, length1, start2, length2);
        }
    }

    function mergeLow(start1, length1, start2, length2) {
        var i = 0;

        for (i = 0; i < length1; i++) {
            tmp[i] = array[start1 + i];
        }

        var cursor1 = 0;
        var cursor2 = start2;
        var dest = start1;

        array[dest++] = array[cursor2++];

        if (--length2 === 0) {
            for (i = 0; i < length1; i++) {
                array[dest + i] = tmp[cursor1 + i];
            }
            return;
        }

        if (length1 === 1) {
            for (i = 0; i < length2; i++) {
                array[dest + i] = array[cursor2 + i];
            }
            array[dest + length2] = tmp[cursor1];
            return;
        }

        var _minGallop = minGallop;
        var count1, count2, exit;

        while (1) {
            count1 = 0;
            count2 = 0;
            exit = false;

            do {
                if (compare(array[cursor2], tmp[cursor1]) < 0) {
                    array[dest++] = array[cursor2++];
                    count2++;
                    count1 = 0;

                    if (--length2 === 0) {
                        exit = true;
                        break;
                    }
                }
                else {
                    array[dest++] = tmp[cursor1++];
                    count1++;
                    count2 = 0;
                    if (--length1 === 1) {
                        exit = true;
                        break;
                    }
                }
            } while ((count1 | count2) < _minGallop);

            if (exit) {
                break;
            }

            do {
                count1 = gallopRight(array[cursor2], tmp, cursor1, length1, 0, compare);

                if (count1 !== 0) {
                    for (i = 0; i < count1; i++) {
                        array[dest + i] = tmp[cursor1 + i];
                    }

                    dest += count1;
                    cursor1 += count1;
                    length1 -= count1;
                    if (length1 <= 1) {
                        exit = true;
                        break;
                    }
                }

                array[dest++] = array[cursor2++];

                if (--length2 === 0) {
                    exit = true;
                    break;
                }

                count2 = gallopLeft(tmp[cursor1], array, cursor2, length2, 0, compare);

                if (count2 !== 0) {
                    for (i = 0; i < count2; i++) {
                        array[dest + i] = array[cursor2 + i];
                    }

                    dest += count2;
                    cursor2 += count2;
                    length2 -= count2;

                    if (length2 === 0) {
                        exit = true;
                        break;
                    }
                }
                array[dest++] = tmp[cursor1++];

                if (--length1 === 1) {
                    exit = true;
                    break;
                }

                _minGallop--;
            } while (count1 >= DEFAULT_MIN_GALLOPING || count2 >= DEFAULT_MIN_GALLOPING);

            if (exit) {
                break;
            }

            if (_minGallop < 0) {
                _minGallop = 0;
            }

            _minGallop += 2;
        }

        minGallop = _minGallop;

        minGallop < 1 && (minGallop = 1);

        if (length1 === 1) {
            for (i = 0; i < length2; i++) {
                array[dest + i] = array[cursor2 + i];
            }
            array[dest + length2] = tmp[cursor1];
        }
        else if (length1 === 0) {
            throw new Error();
            // throw new Error('mergeLow preconditions were not respected');
        }
        else {
            for (i = 0; i < length1; i++) {
                array[dest + i] = tmp[cursor1 + i];
            }
        }
    }

    function mergeHigh (start1, length1, start2, length2) {
        var i = 0;

        for (i = 0; i < length2; i++) {
            tmp[i] = array[start2 + i];
        }

        var cursor1 = start1 + length1 - 1;
        var cursor2 = length2 - 1;
        var dest = start2 + length2 - 1;
        var customCursor = 0;
        var customDest = 0;

        array[dest--] = array[cursor1--];

        if (--length1 === 0) {
            customCursor = dest - (length2 - 1);

            for (i = 0; i < length2; i++) {
                array[customCursor + i] = tmp[i];
            }

            return;
        }

        if (length2 === 1) {
            dest -= length1;
            cursor1 -= length1;
            customDest = dest + 1;
            customCursor = cursor1 + 1;

            for (i = length1 - 1; i >= 0; i--) {
                array[customDest + i] = array[customCursor + i];
            }

            array[dest] = tmp[cursor2];
            return;
        }

        var _minGallop = minGallop;

        while (true) {
            var count1 = 0;
            var count2 = 0;
            var exit = false;

            do {
                if (compare(tmp[cursor2], array[cursor1]) < 0) {
                    array[dest--] = array[cursor1--];
                    count1++;
                    count2 = 0;
                    if (--length1 === 0) {
                        exit = true;
                        break;
                    }
                }
                else {
                    array[dest--] = tmp[cursor2--];
                    count2++;
                    count1 = 0;
                    if (--length2 === 1) {
                        exit = true;
                        break;
                    }
                }
            } while ((count1 | count2) < _minGallop);

            if (exit) {
                break;
            }

            do {
                count1 = length1 - gallopRight(tmp[cursor2], array, start1, length1, length1 - 1, compare);

                if (count1 !== 0) {
                    dest -= count1;
                    cursor1 -= count1;
                    length1 -= count1;
                    customDest = dest + 1;
                    customCursor = cursor1 + 1;

                    for (i = count1 - 1; i >= 0; i--) {
                        array[customDest + i] = array[customCursor + i];
                    }

                    if (length1 === 0) {
                        exit = true;
                        break;
                    }
                }

                array[dest--] = tmp[cursor2--];

                if (--length2 === 1) {
                    exit = true;
                    break;
                }

                count2 = length2 - gallopLeft(array[cursor1], tmp, 0, length2, length2 - 1, compare);

                if (count2 !== 0) {
                    dest -= count2;
                    cursor2 -= count2;
                    length2 -= count2;
                    customDest = dest + 1;
                    customCursor = cursor2 + 1;

                    for (i = 0; i < count2; i++) {
                        array[customDest + i] = tmp[customCursor + i];
                    }

                    if (length2 <= 1) {
                        exit = true;
                        break;
                    }
                }

                array[dest--] = array[cursor1--];

                if (--length1 === 0) {
                    exit = true;
                    break;
                }

                _minGallop--;
            } while (count1 >= DEFAULT_MIN_GALLOPING || count2 >= DEFAULT_MIN_GALLOPING);

            if (exit) {
                break;
            }

            if (_minGallop < 0) {
                _minGallop = 0;
            }

            _minGallop += 2;
        }

        minGallop = _minGallop;

        if (minGallop < 1) {
            minGallop = 1;
        }

        if (length2 === 1) {
            dest -= length1;
            cursor1 -= length1;
            customDest = dest + 1;
            customCursor = cursor1 + 1;

            for (i = length1 - 1; i >= 0; i--) {
                array[customDest + i] = array[customCursor + i];
            }

            array[dest] = tmp[cursor2];
        }
        else if (length2 === 0) {
            throw new Error();
            // throw new Error('mergeHigh preconditions were not respected');
        }
        else {
            customCursor = dest - (length2 - 1);
            for (i = 0; i < length2; i++) {
                array[customCursor + i] = tmp[i];
            }
        }
    }

    this.mergeRuns = mergeRuns;
    this.forceMergeRuns = forceMergeRuns;
    this.pushRun = pushRun;
}

function sort(array, compare, lo, hi) {
    if (!lo) {
        lo = 0;
    }
    if (!hi) {
        hi = array.length;
    }

    var remaining = hi - lo;

    if (remaining < 2) {
        return;
    }

    var runLength = 0;

    if (remaining < DEFAULT_MIN_MERGE) {
        runLength = makeAscendingRun(array, lo, hi, compare);
        binaryInsertionSort(array, lo, hi, lo + runLength, compare);
        return;
    }

    var ts = new TimSort(array, compare);

    var minRun = minRunLength(remaining);

    do {
        runLength = makeAscendingRun(array, lo, hi, compare);
        if (runLength < minRun) {
            var force = remaining;
            if (force > minRun) {
                force = minRun;
            }

            binaryInsertionSort(array, lo, lo + force, lo + runLength, compare);
            runLength = force;
        }

        ts.pushRun(lo, runLength);
        ts.mergeRuns();

        remaining -= runLength;
        lo += runLength;
    } while (remaining !== 0);

    ts.forceMergeRuns();
}

// Use timsort because in most case elements are partially sorted
// https://jsfiddle.net/pissang/jr4x7mdm/8/
function shapeCompareFunc(a, b) {
    if (a.zlevel === b.zlevel) {
        if (a.z === b.z) {
            // if (a.z2 === b.z2) {
            //     // FIXME Slow has renderidx compare
            //     // http://stackoverflow.com/questions/20883421/sorting-in-javascript-should-every-compare-function-have-a-return-0-statement
            //     // https://github.com/v8/v8/blob/47cce544a31ed5577ffe2963f67acb4144ee0232/src/js/array.js#L1012
            //     return a.__renderidx - b.__renderidx;
            // }
            return a.z2 - b.z2;
        }
        return a.z - b.z;
    }
    return a.zlevel - b.zlevel;
}
/**
 * 内容仓库 (M)
 * @alias module:zrender/Storage
 * @constructor
 */
var Storage = function () { // jshint ignore:line
    this._roots = [];

    this._displayList = [];

    this._displayListLen = 0;
};

Storage.prototype = {

    constructor: Storage,

    /**
     * @param  {Function} cb
     *
     */
    traverse: function (cb, context) {
        for (var i = 0; i < this._roots.length; i++) {
            this._roots[i].traverse(cb, context);
        }
    },

    /**
     * 返回所有图形的绘制队列
     * @param {boolean} [update=false] 是否在返回前更新该数组
     * @param {boolean} [includeIgnore=false] 是否包含 ignore 的数组, 在 update 为 true 的时候有效
     *
     * 详见{@link module:zrender/graphic/Displayable.prototype.updateDisplayList}
     * @return {Array.<module:zrender/graphic/Displayable>}
     */
    getDisplayList: function (update, includeIgnore) {
        includeIgnore = includeIgnore || false;
        if (update) {
            this.updateDisplayList(includeIgnore);
        }
        return this._displayList;
    },

    /**
     * 更新图形的绘制队列。
     * 每次绘制前都会调用，该方法会先深度优先遍历整个树，更新所有Group和Shape的变换并且把所有可见的Shape保存到数组中，
     * 最后根据绘制的优先级（zlevel > z > 插入顺序）排序得到绘制队列
     * @param {boolean} [includeIgnore=false] 是否包含 ignore 的数组
     */
    updateDisplayList: function (includeIgnore) {
        this._displayListLen = 0;

        var roots = this._roots;
        var displayList = this._displayList;
        for (var i = 0, len = roots.length; i < len; i++) {
            this._updateAndAddDisplayable(roots[i], null, includeIgnore);
        }

        displayList.length = this._displayListLen;

        env$1.canvasSupported && sort(displayList, shapeCompareFunc);
    },

    _updateAndAddDisplayable: function (el, clipPaths, includeIgnore) {

        if (el.ignore && !includeIgnore) {
            return;
        }

        el.beforeUpdate();

        if (el.__dirty) {

            el.update();

        }

        el.afterUpdate();

        var userSetClipPath = el.clipPath;
        if (userSetClipPath) {

            // FIXME 效率影响
            if (clipPaths) {
                clipPaths = clipPaths.slice();
            }
            else {
                clipPaths = [];
            }

            var currentClipPath = userSetClipPath;
            var parentClipPath = el;
            // Recursively add clip path
            while (currentClipPath) {
                // clipPath 的变换是基于使用这个 clipPath 的元素
                currentClipPath.parent = parentClipPath;
                currentClipPath.updateTransform();

                clipPaths.push(currentClipPath);

                parentClipPath = currentClipPath;
                currentClipPath = currentClipPath.clipPath;
            }
        }

        if (el.isGroup) {
            var children = el._children;

            for (var i = 0; i < children.length; i++) {
                var child = children[i];

                // Force to mark as dirty if group is dirty
                // FIXME __dirtyPath ?
                if (el.__dirty) {
                    child.__dirty = true;
                }

                this._updateAndAddDisplayable(child, clipPaths, includeIgnore);
            }

            // Mark group clean here
            el.__dirty = false;

        }
        else {
            el.__clipPaths = clipPaths;

            this._displayList[this._displayListLen++] = el;
        }
    },

    /**
     * 添加图形(Shape)或者组(Group)到根节点
     * @param {module:zrender/Element} el
     */
    addRoot: function (el) {
        if (el.__storage === this) {
            return;
        }

        if (el instanceof Group) {
            el.addChildrenToStorage(this);
        }

        this.addToStorage(el);
        this._roots.push(el);
    },

    /**
     * 删除指定的图形(Shape)或者组(Group)
     * @param {string|Array.<string>} [el] 如果为空清空整个Storage
     */
    delRoot: function (el) {
        if (el == null) {
            // 不指定el清空
            for (var i = 0; i < this._roots.length; i++) {
                var root = this._roots[i];
                if (root instanceof Group) {
                    root.delChildrenFromStorage(this);
                }
            }

            this._roots = [];
            this._displayList = [];
            this._displayListLen = 0;

            return;
        }

        if (el instanceof Array) {
            for (var i = 0, l = el.length; i < l; i++) {
                this.delRoot(el[i]);
            }
            return;
        }


        var idx = indexOf(this._roots, el);
        if (idx >= 0) {
            this.delFromStorage(el);
            this._roots.splice(idx, 1);
            if (el instanceof Group) {
                el.delChildrenFromStorage(this);
            }
        }
    },

    addToStorage: function (el) {
        if (el) {
            el.__storage = this;
            el.dirty(false);
        }
        return this;
    },

    delFromStorage: function (el) {
        if (el) {
            el.__storage = null;
        }

        return this;
    },

    /**
     * 清空并且释放Storage
     */
    dispose: function () {
        this._renderList =
        this._roots = null;
    },

    displayableSortFunc: shapeCompareFunc
};

var SHADOW_PROPS = {
    'shadowBlur': 1,
    'shadowOffsetX': 1,
    'shadowOffsetY': 1,
    'textShadowBlur': 1,
    'textShadowOffsetX': 1,
    'textShadowOffsetY': 1,
    'textBoxShadowBlur': 1,
    'textBoxShadowOffsetX': 1,
    'textBoxShadowOffsetY': 1
};

var fixShadow = function (ctx, propName, value) {
    if (SHADOW_PROPS.hasOwnProperty(propName)) {
        return value *= ctx.dpr;
    }
    return value;
};

var STYLE_COMMON_PROPS = [
    ['shadowBlur', 0], ['shadowOffsetX', 0], ['shadowOffsetY', 0], ['shadowColor', '#000'],
    ['lineCap', 'butt'], ['lineJoin', 'miter'], ['miterLimit', 10]
];

// var SHADOW_PROPS = STYLE_COMMON_PROPS.slice(0, 4);
// var LINE_PROPS = STYLE_COMMON_PROPS.slice(4);

var Style = function (opts, host) {
    this.extendFrom(opts, false);
    this.host = host;
};

function createLinearGradient(ctx, obj, rect) {
    var x = obj.x == null ? 0 : obj.x;
    var x2 = obj.x2 == null ? 1 : obj.x2;
    var y = obj.y == null ? 0 : obj.y;
    var y2 = obj.y2 == null ? 0 : obj.y2;

    if (!obj.global) {
        x = x * rect.width + rect.x;
        x2 = x2 * rect.width + rect.x;
        y = y * rect.height + rect.y;
        y2 = y2 * rect.height + rect.y;
    }

    // Fix NaN when rect is Infinity
    x = isNaN(x) ? 0 : x;
    x2 = isNaN(x2) ? 1 : x2;
    y = isNaN(y) ? 0 : y;
    y2 = isNaN(y2) ? 0 : y2;

    var canvasGradient = ctx.createLinearGradient(x, y, x2, y2);

    return canvasGradient;
}

function createRadialGradient(ctx, obj, rect) {
    var width = rect.width;
    var height = rect.height;
    var min = Math.min(width, height);

    var x = obj.x == null ? 0.5 : obj.x;
    var y = obj.y == null ? 0.5 : obj.y;
    var r = obj.r == null ? 0.5 : obj.r;
    if (!obj.global) {
        x = x * width + rect.x;
        y = y * height + rect.y;
        r = r * min;
    }

    var canvasGradient = ctx.createRadialGradient(x, y, 0, x, y, r);

    return canvasGradient;
}


Style.prototype = {

    constructor: Style,

    /**
     * @type {module:zrender/graphic/Displayable}
     */
    host: null,

    /**
     * @type {string}
     */
    fill: '#000',

    /**
     * @type {string}
     */
    stroke: null,

    /**
     * @type {number}
     */
    opacity: 1,

    /**
     * @type {Array.<number>}
     */
    lineDash: null,

    /**
     * @type {number}
     */
    lineDashOffset: 0,

    /**
     * @type {number}
     */
    shadowBlur: 0,

    /**
     * @type {number}
     */
    shadowOffsetX: 0,

    /**
     * @type {number}
     */
    shadowOffsetY: 0,

    /**
     * @type {number}
     */
    lineWidth: 1,

    /**
     * If stroke ignore scale
     * @type {Boolean}
     */
    strokeNoScale: false,

    // Bounding rect text configuration
    // Not affected by element transform
    /**
     * @type {string}
     */
    text: null,

    /**
     * If `fontSize` or `fontFamily` exists, `font` will be reset by
     * `fontSize`, `fontStyle`, `fontWeight`, `fontFamily`.
     * So do not visit it directly in upper application (like echarts),
     * but use `contain/text#makeFont` instead.
     * @type {string}
     */
    font: null,

    /**
     * The same as font. Use font please.
     * @deprecated
     * @type {string}
     */
    textFont: null,

    /**
     * It helps merging respectively, rather than parsing an entire font string.
     * @type {string}
     */
    fontStyle: null,

    /**
     * It helps merging respectively, rather than parsing an entire font string.
     * @type {string}
     */
    fontWeight: null,

    /**
     * It helps merging respectively, rather than parsing an entire font string.
     * Should be 12 but not '12px'.
     * @type {number}
     */
    fontSize: null,

    /**
     * It helps merging respectively, rather than parsing an entire font string.
     * @type {string}
     */
    fontFamily: null,

    /**
     * Reserved for special functinality, like 'hr'.
     * @type {string}
     */
    textTag: null,

    /**
     * @type {string}
     */
    textFill: '#000',

    /**
     * @type {string}
     */
    textStroke: null,

    /**
     * @type {number}
     */
    textWidth: null,

    /**
     * Only for textBackground.
     * @type {number}
     */
    textHeight: null,

    /**
     * textStroke may be set as some color as a default
     * value in upper applicaion, where the default value
     * of textStrokeWidth should be 0 to make sure that
     * user can choose to do not use text stroke.
     * @type {number}
     */
    textStrokeWidth: 0,

    /**
     * @type {number}
     */
    textLineHeight: null,

    /**
     * 'inside', 'left', 'right', 'top', 'bottom'
     * [x, y]
     * Based on x, y of rect.
     * @type {string|Array.<number>}
     * @default 'inside'
     */
    textPosition: 'inside',

    /**
     * If not specified, use the boundingRect of a `displayable`.
     * @type {Object}
     */
    textRect: null,

    /**
     * [x, y]
     * @type {Array.<number>}
     */
    textOffset: null,

    /**
     * @type {string}
     */
    textAlign: null,

    /**
     * @type {string}
     */
    textVerticalAlign: null,

    /**
     * @type {number}
     */
    textDistance: 5,

    /**
     * @type {string}
     */
    textShadowColor: 'transparent',

    /**
     * @type {number}
     */
    textShadowBlur: 0,

    /**
     * @type {number}
     */
    textShadowOffsetX: 0,

    /**
     * @type {number}
     */
    textShadowOffsetY: 0,

    /**
     * @type {string}
     */
    textBoxShadowColor: 'transparent',

    /**
     * @type {number}
     */
    textBoxShadowBlur: 0,

    /**
     * @type {number}
     */
    textBoxShadowOffsetX: 0,

    /**
     * @type {number}
     */
    textBoxShadowOffsetY: 0,

    /**
     * Whether transform text.
     * Only useful in Path and Image element
     * @type {boolean}
     */
    transformText: false,

    /**
     * Text rotate around position of Path or Image
     * Only useful in Path and Image element and transformText is false.
     */
    textRotation: 0,

    /**
     * Text origin of text rotation, like [10, 40].
     * Based on x, y of rect.
     * Useful in label rotation of circular symbol.
     * By default, this origin is textPosition.
     * Can be 'center'.
     * @type {string|Array.<number>}
     */
    textOrigin: null,

    /**
     * @type {string}
     */
    textBackgroundColor: null,

    /**
     * @type {string}
     */
    textBorderColor: null,

    /**
     * @type {number}
     */
    textBorderWidth: 0,

    /**
     * @type {number}
     */
    textBorderRadius: 0,

    /**
     * Can be `2` or `[2, 4]` or `[2, 3, 4, 5]`
     * @type {number|Array.<number>}
     */
    textPadding: null,

    /**
     * Text styles for rich text.
     * @type {Object}
     */
    rich: null,

    /**
     * {outerWidth, outerHeight, ellipsis, placeholder}
     * @type {Object}
     */
    truncate: null,

    /**
     * https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/globalCompositeOperation
     * @type {string}
     */
    blend: null,

    /**
     * @param {CanvasRenderingContext2D} ctx
     */
    bind: function (ctx, el, prevEl) {
        var style = this;
        var prevStyle = prevEl && prevEl.style;
        var firstDraw = !prevStyle;

        for (var i = 0; i < STYLE_COMMON_PROPS.length; i++) {
            var prop = STYLE_COMMON_PROPS[i];
            var styleName = prop[0];

            if (firstDraw || style[styleName] !== prevStyle[styleName]) {
                // FIXME Invalid property value will cause style leak from previous element.
                ctx[styleName] =
                    fixShadow(ctx, styleName, style[styleName] || prop[1]);
            }
        }

        if ((firstDraw || style.fill !== prevStyle.fill)) {
            ctx.fillStyle = style.fill;
        }
        if ((firstDraw || style.stroke !== prevStyle.stroke)) {
            ctx.strokeStyle = style.stroke;
        }
        if ((firstDraw || style.opacity !== prevStyle.opacity)) {
            ctx.globalAlpha = style.opacity == null ? 1 : style.opacity;
        }

        if ((firstDraw || style.blend !== prevStyle.blend)) {
            ctx.globalCompositeOperation = style.blend || 'source-over';
        }
        if (this.hasStroke()) {
            var lineWidth = style.lineWidth;
            ctx.lineWidth = lineWidth / (
                (this.strokeNoScale && el && el.getLineScale) ? el.getLineScale() : 1
            );
        }
    },

    hasFill: function () {
        var fill = this.fill;
        return fill != null && fill !== 'none';
    },

    hasStroke: function () {
        var stroke = this.stroke;
        return stroke != null && stroke !== 'none' && this.lineWidth > 0;
    },

    /**
     * Extend from other style
     * @param {zrender/graphic/Style} otherStyle
     * @param {boolean} overwrite true: overwrirte any way.
     *                            false: overwrite only when !target.hasOwnProperty
     *                            others: overwrite when property is not null/undefined.
     */
    extendFrom: function (otherStyle, overwrite) {
        if (otherStyle) {
            for (var name in otherStyle) {
                if (otherStyle.hasOwnProperty(name)
                    && (overwrite === true
                        || (
                            overwrite === false
                                ? !this.hasOwnProperty(name)
                                : otherStyle[name] != null
                        )
                    )
                ) {
                    this[name] = otherStyle[name];
                }
            }
        }
    },

    /**
     * Batch setting style with a given object
     * @param {Object|string} obj
     * @param {*} [obj]
     */
    set: function (obj, value) {
        if (typeof obj === 'string') {
            this[obj] = value;
        }
        else {
            this.extendFrom(obj, true);
        }
    },

    /**
     * Clone
     * @return {zrender/graphic/Style} [description]
     */
    clone: function () {
        var newStyle = new this.constructor();
        newStyle.extendFrom(this, true);
        return newStyle;
    },

    getGradient: function (ctx, obj, rect) {
        var method = obj.type === 'radial' ? createRadialGradient : createLinearGradient;
        var canvasGradient = method(ctx, obj, rect);
        var colorStops = obj.colorStops;
        for (var i = 0; i < colorStops.length; i++) {
            canvasGradient.addColorStop(
                colorStops[i].offset, colorStops[i].color
            );
        }
        return canvasGradient;
    }

};

var styleProto = Style.prototype;
for (var i = 0; i < STYLE_COMMON_PROPS.length; i++) {
    var prop = STYLE_COMMON_PROPS[i];
    if (!(prop[0] in styleProto)) {
        styleProto[prop[0]] = prop[1];
    }
}

// Provide for others
Style.getGradient = styleProto.getGradient;

var Pattern = function (image, repeat) {
    // Should do nothing more in this constructor. Because gradient can be
    // declard by `color: {image: ...}`, where this constructor will not be called.

    this.image = image;
    this.repeat = repeat;

    // Can be cloned
    this.type = 'pattern';
};

Pattern.prototype.getCanvasPattern = function (ctx) {
    return ctx.createPattern(this.image, this.repeat || 'repeat');
};

/**
 * @module zrender/Layer
 * @author pissang(https://www.github.com/pissang)
 */

function returnFalse() {
    return false;
}

/**
 * 创建dom
 *
 * @inner
 * @param {string} id dom id 待用
 * @param {Painter} painter painter instance
 * @param {number} number
 */
function createDom(id, painter, dpr) {
    var newDom = createCanvas();
    var width = painter.getWidth();
    var height = painter.getHeight();

    var newDomStyle = newDom.style;
    if (newDomStyle) {  // In node or some other non-browser environment
        newDomStyle.position = 'absolute';
        newDomStyle.left = 0;
        newDomStyle.top = 0;
        newDomStyle.width = width + 'px';
        newDomStyle.height = height + 'px';

        newDom.setAttribute('data-zr-dom-id', id);
    }

    newDom.width = width * dpr;
    newDom.height = height * dpr;

    return newDom;
}

/**
 * @alias module:zrender/Layer
 * @constructor
 * @extends module:zrender/mixin/Transformable
 * @param {string} id
 * @param {module:zrender/Painter} painter
 * @param {number} [dpr]
 */
var Layer = function(id, painter, dpr) {
    var dom;
    dpr = dpr || devicePixelRatio;
    if (typeof id === 'string') {
        dom = createDom(id, painter, dpr);
    }
    // Not using isDom because in node it will return false
    else if (isObject$1(id)) {
        dom = id;
        id = dom.id;
    }
    this.id = id;
    this.dom = dom;

    var domStyle = dom.style;
    if (domStyle) { // Not in node
        dom.onselectstart = returnFalse; // 避免页面选中的尴尬
        domStyle['-webkit-user-select'] = 'none';
        domStyle['user-select'] = 'none';
        domStyle['-webkit-touch-callout'] = 'none';
        domStyle['-webkit-tap-highlight-color'] = 'rgba(0,0,0,0)';
        domStyle['padding'] = 0;
        domStyle['margin'] = 0;
        domStyle['border-width'] = 0;
    }

    this.domBack = null;
    this.ctxBack = null;

    this.painter = painter;

    this.config = null;

    // Configs
    /**
     * 每次清空画布的颜色
     * @type {string}
     * @default 0
     */
    this.clearColor = 0;
    /**
     * 是否开启动态模糊
     * @type {boolean}
     * @default false
     */
    this.motionBlur = false;
    /**
     * 在开启动态模糊的时候使用，与上一帧混合的alpha值，值越大尾迹越明显
     * @type {number}
     * @default 0.7
     */
    this.lastFrameAlpha = 0.7;

    /**
     * Layer dpr
     * @type {number}
     */
    this.dpr = dpr;
};

Layer.prototype = {

    constructor: Layer,

    __dirty: true,

    __used: false,

    __drawIndex: 0,
    __startIndex: 0,
    __endIndex: 0,

    incremental: false,

    getElementCount: function () {
        return this.__endIndex - this.__startIndex;
    },

    initContext: function () {
        this.ctx = this.dom.getContext('2d');
        this.ctx.dpr = this.dpr;
    },

    createBackBuffer: function () {
        var dpr = this.dpr;

        this.domBack = createDom('back-' + this.id, this.painter, dpr);
        this.ctxBack = this.domBack.getContext('2d');

        if (dpr != 1) {
            this.ctxBack.scale(dpr, dpr);
        }
    },

    /**
     * @param  {number} width
     * @param  {number} height
     */
    resize: function (width, height) {
        var dpr = this.dpr;

        var dom = this.dom;
        var domStyle = dom.style;
        var domBack = this.domBack;

        if (domStyle) {
            domStyle.width = width + 'px';
            domStyle.height = height + 'px';
        }

        dom.width = width * dpr;
        dom.height = height * dpr;

        if (domBack) {
            domBack.width = width * dpr;
            domBack.height = height * dpr;

            if (dpr != 1) {
                this.ctxBack.scale(dpr, dpr);
            }
        }
    },

    /**
     * 清空该层画布
     * @param {boolean} [clearAll]=false Clear all with out motion blur
     * @param {Color} [clearColor]
     */
    clear: function (clearAll, clearColor) {
        var dom = this.dom;
        var ctx = this.ctx;
        var width = dom.width;
        var height = dom.height;

        var clearColor = clearColor || this.clearColor;
        var haveMotionBLur = this.motionBlur && !clearAll;
        var lastFrameAlpha = this.lastFrameAlpha;

        var dpr = this.dpr;

        if (haveMotionBLur) {
            if (!this.domBack) {
                this.createBackBuffer();
            }

            this.ctxBack.globalCompositeOperation = 'copy';
            this.ctxBack.drawImage(
                dom, 0, 0,
                width / dpr,
                height / dpr
            );
        }

        ctx.clearRect(0, 0, width, height);
        if (clearColor && clearColor !== 'transparent') {
            var clearColorGradientOrPattern;
            // Gradient
            if (clearColor.colorStops) {
                // Cache canvas gradient
                clearColorGradientOrPattern = clearColor.__canvasGradient || Style.getGradient(ctx, clearColor, {
                    x: 0,
                    y: 0,
                    width: width,
                    height: height
                });

                clearColor.__canvasGradient = clearColorGradientOrPattern;
            }
            // Pattern
            else if (clearColor.image) {
                clearColorGradientOrPattern = Pattern.prototype.getCanvasPattern.call(clearColor, ctx);
            }
            ctx.save();
            ctx.fillStyle = clearColorGradientOrPattern || clearColor;
            ctx.fillRect(0, 0, width, height);
            ctx.restore();
        }

        if (haveMotionBLur) {
            var domBack = this.domBack;
            ctx.save();
            ctx.globalAlpha = lastFrameAlpha;
            ctx.drawImage(domBack, 0, 0, width, height);
            ctx.restore();
        }
    }
};

var requestAnimationFrame = (
    typeof window !== 'undefined'
    && (
        (window.requestAnimationFrame && window.requestAnimationFrame.bind(window))
        // https://github.com/ecomfe/zrender/issues/189#issuecomment-224919809
        || (window.msRequestAnimationFrame && window.msRequestAnimationFrame.bind(window))
        || window.mozRequestAnimationFrame
        || window.webkitRequestAnimationFrame
    )
) || function (func) {
    setTimeout(func, 16);
};

var globalImageCache = new LRU(50);

/**
 * @param {string|HTMLImageElement|HTMLCanvasElement|Canvas} newImageOrSrc
 * @return {HTMLImageElement|HTMLCanvasElement|Canvas} image
 */
function findExistImage(newImageOrSrc) {
    if (typeof newImageOrSrc === 'string') {
        var cachedImgObj = globalImageCache.get(newImageOrSrc);
        return cachedImgObj && cachedImgObj.image;
    }
    else {
        return newImageOrSrc;
    }
}

/**
 * Caution: User should cache loaded images, but not just count on LRU.
 * Consider if required images more than LRU size, will dead loop occur?
 *
 * @param {string|HTMLImageElement|HTMLCanvasElement|Canvas} newImageOrSrc
 * @param {HTMLImageElement|HTMLCanvasElement|Canvas} image Existent image.
 * @param {module:zrender/Element} [hostEl] For calling `dirty`.
 * @param {Function} [cb] params: (image, cbPayload)
 * @param {Object} [cbPayload] Payload on cb calling.
 * @return {HTMLImageElement|HTMLCanvasElement|Canvas} image
 */
function createOrUpdateImage(newImageOrSrc, image, hostEl, cb, cbPayload) {
    if (!newImageOrSrc) {
        return image;
    }
    else if (typeof newImageOrSrc === 'string') {

        // Image should not be loaded repeatly.
        if ((image && image.__zrImageSrc === newImageOrSrc) || !hostEl) {
            return image;
        }

        // Only when there is no existent image or existent image src
        // is different, this method is responsible for load.
        var cachedImgObj = globalImageCache.get(newImageOrSrc);

        var pendingWrap = {hostEl: hostEl, cb: cb, cbPayload: cbPayload};

        if (cachedImgObj) {
            image = cachedImgObj.image;
            !isImageReady(image) && cachedImgObj.pending.push(pendingWrap);
        }
        else {
            !image && (image = new Image());
            image.onload = imageOnLoad;

            globalImageCache.put(
                newImageOrSrc,
                image.__cachedImgObj = {
                    image: image,
                    pending: [pendingWrap]
                }
            );

            image.src = image.__zrImageSrc = newImageOrSrc;
        }

        return image;
    }
    // newImageOrSrc is an HTMLImageElement or HTMLCanvasElement or Canvas
    else {
        return newImageOrSrc;
    }
}

function imageOnLoad() {
    var cachedImgObj = this.__cachedImgObj;
    this.onload = this.__cachedImgObj = null;

    for (var i = 0; i < cachedImgObj.pending.length; i++) {
        var pendingWrap = cachedImgObj.pending[i];
        var cb = pendingWrap.cb;
        cb && cb(this, pendingWrap.cbPayload);
        pendingWrap.hostEl.dirty();
    }
    cachedImgObj.pending.length = 0;
}

function isImageReady(image) {
    return image && image.width && image.height;
}

var textWidthCache = {};
var textWidthCacheCounter = 0;

var TEXT_CACHE_MAX = 5000;
var STYLE_REG = /\{([a-zA-Z0-9_]+)\|([^}]*)\}/g;

var DEFAULT_FONT = '12px sans-serif';

// Avoid assign to an exported variable, for transforming to cjs.
var methods$1 = {};



/**
 * @public
 * @param {string} text
 * @param {string} font
 * @return {number} width
 */
function getWidth(text, font) {
    font = font || DEFAULT_FONT;
    var key = text + ':' + font;
    if (textWidthCache[key]) {
        return textWidthCache[key];
    }

    var textLines = (text + '').split('\n');
    var width = 0;

    for (var i = 0, l = textLines.length; i < l; i++) {
        // textContain.measureText may be overrided in SVG or VML
        width = Math.max(measureText(textLines[i], font).width, width);
    }

    if (textWidthCacheCounter > TEXT_CACHE_MAX) {
        textWidthCacheCounter = 0;
        textWidthCache = {};
    }
    textWidthCacheCounter++;
    textWidthCache[key] = width;

    return width;
}

/**
 * @public
 * @param {string} text
 * @param {string} font
 * @param {string} [textAlign='left']
 * @param {string} [textVerticalAlign='top']
 * @param {Array.<number>} [textPadding]
 * @param {Object} [rich]
 * @param {Object} [truncate]
 * @return {Object} {x, y, width, height, lineHeight}
 */
function getBoundingRect(text, font, textAlign, textVerticalAlign, textPadding, rich, truncate) {
    return rich
        ? getRichTextRect(text, font, textAlign, textVerticalAlign, textPadding, rich, truncate)
        : getPlainTextRect(text, font, textAlign, textVerticalAlign, textPadding, truncate);
}

function getPlainTextRect(text, font, textAlign, textVerticalAlign, textPadding, truncate) {
    var contentBlock = parsePlainText(text, font, textPadding, truncate);
    var outerWidth = getWidth(text, font);
    if (textPadding) {
        outerWidth += textPadding[1] + textPadding[3];
    }
    var outerHeight = contentBlock.outerHeight;

    var x = adjustTextX(0, outerWidth, textAlign);
    var y = adjustTextY(0, outerHeight, textVerticalAlign);

    var rect = new BoundingRect(x, y, outerWidth, outerHeight);
    rect.lineHeight = contentBlock.lineHeight;

    return rect;
}

function getRichTextRect(text, font, textAlign, textVerticalAlign, textPadding, rich, truncate) {
    var contentBlock = parseRichText(text, {
        rich: rich,
        truncate: truncate,
        font: font,
        textAlign: textAlign,
        textPadding: textPadding
    });
    var outerWidth = contentBlock.outerWidth;
    var outerHeight = contentBlock.outerHeight;

    var x = adjustTextX(0, outerWidth, textAlign);
    var y = adjustTextY(0, outerHeight, textVerticalAlign);

    return new BoundingRect(x, y, outerWidth, outerHeight);
}

/**
 * @public
 * @param {number} x
 * @param {number} width
 * @param {string} [textAlign='left']
 * @return {number} Adjusted x.
 */
function adjustTextX(x, width, textAlign) {
    // FIXME Right to left language
    if (textAlign === 'right') {
        x -= width;
    }
    else if (textAlign === 'center') {
        x -= width / 2;
    }
    return x;
}

/**
 * @public
 * @param {number} y
 * @param {number} height
 * @param {string} [textVerticalAlign='top']
 * @return {number} Adjusted y.
 */
function adjustTextY(y, height, textVerticalAlign) {
    if (textVerticalAlign === 'middle') {
        y -= height / 2;
    }
    else if (textVerticalAlign === 'bottom') {
        y -= height;
    }
    return y;
}

/**
 * @public
 * @param {stirng} textPosition
 * @param {Object} rect {x, y, width, height}
 * @param {number} distance
 * @return {Object} {x, y, textAlign, textVerticalAlign}
 */
function adjustTextPositionOnRect(textPosition, rect, distance) {

    var x = rect.x;
    var y = rect.y;

    var height = rect.height;
    var width = rect.width;
    var halfHeight = height / 2;

    var textAlign = 'left';
    var textVerticalAlign = 'top';

    switch (textPosition) {
        case 'left':
            x -= distance;
            y += halfHeight;
            textAlign = 'right';
            textVerticalAlign = 'middle';
            break;
        case 'right':
            x += distance + width;
            y += halfHeight;
            textVerticalAlign = 'middle';
            break;
        case 'top':
            x += width / 2;
            y -= distance;
            textAlign = 'center';
            textVerticalAlign = 'bottom';
            break;
        case 'bottom':
            x += width / 2;
            y += height + distance;
            textAlign = 'center';
            break;
        case 'inside':
            x += width / 2;
            y += halfHeight;
            textAlign = 'center';
            textVerticalAlign = 'middle';
            break;
        case 'insideLeft':
            x += distance;
            y += halfHeight;
            textVerticalAlign = 'middle';
            break;
        case 'insideRight':
            x += width - distance;
            y += halfHeight;
            textAlign = 'right';
            textVerticalAlign = 'middle';
            break;
        case 'insideTop':
            x += width / 2;
            y += distance;
            textAlign = 'center';
            break;
        case 'insideBottom':
            x += width / 2;
            y += height - distance;
            textAlign = 'center';
            textVerticalAlign = 'bottom';
            break;
        case 'insideTopLeft':
            x += distance;
            y += distance;
            break;
        case 'insideTopRight':
            x += width - distance;
            y += distance;
            textAlign = 'right';
            break;
        case 'insideBottomLeft':
            x += distance;
            y += height - distance;
            textVerticalAlign = 'bottom';
            break;
        case 'insideBottomRight':
            x += width - distance;
            y += height - distance;
            textAlign = 'right';
            textVerticalAlign = 'bottom';
            break;
    }

    return {
        x: x,
        y: y,
        textAlign: textAlign,
        textVerticalAlign: textVerticalAlign
    };
}

/**
 * Show ellipsis if overflow.
 *
 * @public
 * @param  {string} text
 * @param  {string} containerWidth
 * @param  {string} font
 * @param  {number} [ellipsis='...']
 * @param  {Object} [options]
 * @param  {number} [options.maxIterations=3]
 * @param  {number} [options.minChar=0] If truncate result are less
 *                  then minChar, ellipsis will not show, which is
 *                  better for user hint in some cases.
 * @param  {number} [options.placeholder=''] When all truncated, use the placeholder.
 * @return {string}
 */
function truncateText(text, containerWidth, font, ellipsis, options) {
    if (!containerWidth) {
        return '';
    }

    var textLines = (text + '').split('\n');
    options = prepareTruncateOptions(containerWidth, font, ellipsis, options);

    // FIXME
    // It is not appropriate that every line has '...' when truncate multiple lines.
    for (var i = 0, len = textLines.length; i < len; i++) {
        textLines[i] = truncateSingleLine(textLines[i], options);
    }

    return textLines.join('\n');
}

function prepareTruncateOptions(containerWidth, font, ellipsis, options) {
    options = extend({}, options);

    options.font = font;
    var ellipsis = retrieve2(ellipsis, '...');
    options.maxIterations = retrieve2(options.maxIterations, 2);
    var minChar = options.minChar = retrieve2(options.minChar, 0);
    // FIXME
    // Other languages?
    options.cnCharWidth = getWidth('国', font);
    // FIXME
    // Consider proportional font?
    var ascCharWidth = options.ascCharWidth = getWidth('a', font);
    options.placeholder = retrieve2(options.placeholder, '');

    // Example 1: minChar: 3, text: 'asdfzxcv', truncate result: 'asdf', but not: 'a...'.
    // Example 2: minChar: 3, text: '维度', truncate result: '维', but not: '...'.
    var contentWidth = containerWidth = Math.max(0, containerWidth - 1); // Reserve some gap.
    for (var i = 0; i < minChar && contentWidth >= ascCharWidth; i++) {
        contentWidth -= ascCharWidth;
    }

    var ellipsisWidth = getWidth(ellipsis);
    if (ellipsisWidth > contentWidth) {
        ellipsis = '';
        ellipsisWidth = 0;
    }

    contentWidth = containerWidth - ellipsisWidth;

    options.ellipsis = ellipsis;
    options.ellipsisWidth = ellipsisWidth;
    options.contentWidth = contentWidth;
    options.containerWidth = containerWidth;

    return options;
}

function truncateSingleLine(textLine, options) {
    var containerWidth = options.containerWidth;
    var font = options.font;
    var contentWidth = options.contentWidth;

    if (!containerWidth) {
        return '';
    }

    var lineWidth = getWidth(textLine, font);

    if (lineWidth <= containerWidth) {
        return textLine;
    }

    for (var j = 0;; j++) {
        if (lineWidth <= contentWidth || j >= options.maxIterations) {
            textLine += options.ellipsis;
            break;
        }

        var subLength = j === 0
            ? estimateLength(textLine, contentWidth, options.ascCharWidth, options.cnCharWidth)
            : lineWidth > 0
            ? Math.floor(textLine.length * contentWidth / lineWidth)
            : 0;

        textLine = textLine.substr(0, subLength);
        lineWidth = getWidth(textLine, font);
    }

    if (textLine === '') {
        textLine = options.placeholder;
    }

    return textLine;
}

function estimateLength(text, contentWidth, ascCharWidth, cnCharWidth) {
    var width = 0;
    var i = 0;
    for (var len = text.length; i < len && width < contentWidth; i++) {
        var charCode = text.charCodeAt(i);
        width += (0 <= charCode && charCode <= 127) ? ascCharWidth : cnCharWidth;
    }
    return i;
}

/**
 * @public
 * @param {string} font
 * @return {number} line height
 */
function getLineHeight(font) {
    // FIXME A rough approach.
    return getWidth('国', font);
}

/**
 * @public
 * @param {string} text
 * @param {string} font
 * @return {Object} width
 */
function measureText(text, font) {
    return methods$1.measureText(text, font);
}

// Avoid assign to an exported variable, for transforming to cjs.
methods$1.measureText = function (text, font) {
    var ctx = getContext();
    ctx.font = font || DEFAULT_FONT;
    return ctx.measureText(text);
};

/**
 * @public
 * @param {string} text
 * @param {string} font
 * @param {Object} [truncate]
 * @return {Object} block: {lineHeight, lines, height, outerHeight}
 *  Notice: for performance, do not calculate outerWidth util needed.
 */
function parsePlainText(text, font, padding, truncate) {
    text != null && (text += '');

    var lineHeight = getLineHeight(font);
    var lines = text ? text.split('\n') : [];
    var height = lines.length * lineHeight;
    var outerHeight = height;

    if (padding) {
        outerHeight += padding[0] + padding[2];
    }

    if (text && truncate) {
        var truncOuterHeight = truncate.outerHeight;
        var truncOuterWidth = truncate.outerWidth;
        if (truncOuterHeight != null && outerHeight > truncOuterHeight) {
            text = '';
            lines = [];
        }
        else if (truncOuterWidth != null) {
            var options = prepareTruncateOptions(
                truncOuterWidth - (padding ? padding[1] + padding[3] : 0),
                font,
                truncate.ellipsis,
                {minChar: truncate.minChar, placeholder: truncate.placeholder}
            );

            // FIXME
            // It is not appropriate that every line has '...' when truncate multiple lines.
            for (var i = 0, len = lines.length; i < len; i++) {
                lines[i] = truncateSingleLine(lines[i], options);
            }
        }
    }

    return {
        lines: lines,
        height: height,
        outerHeight: outerHeight,
        lineHeight: lineHeight
    };
}

/**
 * For example: 'some text {a|some text}other text{b|some text}xxx{c|}xxx'
 * Also consider 'bbbb{a|xxx\nzzz}xxxx\naaaa'.
 *
 * @public
 * @param {string} text
 * @param {Object} style
 * @return {Object} block
 * {
 *      width,
 *      height,
 *      lines: [{
 *          lineHeight,
 *          width,
 *          tokens: [[{
 *              styleName,
 *              text,
 *              width,      // include textPadding
 *              height,     // include textPadding
 *              textWidth, // pure text width
 *              textHeight, // pure text height
 *              lineHeihgt,
 *              font,
 *              textAlign,
 *              textVerticalAlign
 *          }], [...], ...]
 *      }, ...]
 * }
 * If styleName is undefined, it is plain text.
 */
function parseRichText(text, style) {
    var contentBlock = {lines: [], width: 0, height: 0};

    text != null && (text += '');
    if (!text) {
        return contentBlock;
    }

    var lastIndex = STYLE_REG.lastIndex = 0;
    var result;
    while ((result = STYLE_REG.exec(text)) != null) {
        var matchedIndex = result.index;
        if (matchedIndex > lastIndex) {
            pushTokens(contentBlock, text.substring(lastIndex, matchedIndex));
        }
        pushTokens(contentBlock, result[2], result[1]);
        lastIndex = STYLE_REG.lastIndex;
    }

    if (lastIndex < text.length) {
        pushTokens(contentBlock, text.substring(lastIndex, text.length));
    }

    var lines = contentBlock.lines;
    var contentHeight = 0;
    var contentWidth = 0;
    // For `textWidth: 100%`
    var pendingList = [];

    var stlPadding = style.textPadding;

    var truncate = style.truncate;
    var truncateWidth = truncate && truncate.outerWidth;
    var truncateHeight = truncate && truncate.outerHeight;
    if (stlPadding) {
        truncateWidth != null && (truncateWidth -= stlPadding[1] + stlPadding[3]);
        truncateHeight != null && (truncateHeight -= stlPadding[0] + stlPadding[2]);
    }

    // Calculate layout info of tokens.
    for (var i = 0; i < lines.length; i++) {
        var line = lines[i];
        var lineHeight = 0;
        var lineWidth = 0;

        for (var j = 0; j < line.tokens.length; j++) {
            var token = line.tokens[j];
            var tokenStyle = token.styleName && style.rich[token.styleName] || {};
            // textPadding should not inherit from style.
            var textPadding = token.textPadding = tokenStyle.textPadding;

            // textFont has been asigned to font by `normalizeStyle`.
            var font = token.font = tokenStyle.font || style.font;

            // textHeight can be used when textVerticalAlign is specified in token.
            var tokenHeight = token.textHeight = retrieve2(
                // textHeight should not be inherited, consider it can be specified
                // as box height of the block.
                tokenStyle.textHeight, getLineHeight(font)
            );
            textPadding && (tokenHeight += textPadding[0] + textPadding[2]);
            token.height = tokenHeight;
            token.lineHeight = retrieve3(
                tokenStyle.textLineHeight, style.textLineHeight, tokenHeight
            );

            token.textAlign = tokenStyle && tokenStyle.textAlign || style.textAlign;
            token.textVerticalAlign = tokenStyle && tokenStyle.textVerticalAlign || 'middle';

            if (truncateHeight != null && contentHeight + token.lineHeight > truncateHeight) {
                return {lines: [], width: 0, height: 0};
            }

            token.textWidth = getWidth(token.text, font);
            var tokenWidth = tokenStyle.textWidth;
            var tokenWidthNotSpecified = tokenWidth == null || tokenWidth === 'auto';

            // Percent width, can be `100%`, can be used in drawing separate
            // line when box width is needed to be auto.
            if (typeof tokenWidth === 'string' && tokenWidth.charAt(tokenWidth.length - 1) === '%') {
                token.percentWidth = tokenWidth;
                pendingList.push(token);
                tokenWidth = 0;
                // Do not truncate in this case, because there is no user case
                // and it is too complicated.
            }
            else {
                if (tokenWidthNotSpecified) {
                    tokenWidth = token.textWidth;

                    // FIXME: If image is not loaded and textWidth is not specified, calling
                    // `getBoundingRect()` will not get correct result.
                    var textBackgroundColor = tokenStyle.textBackgroundColor;
                    var bgImg = textBackgroundColor && textBackgroundColor.image;

                    // Use cases:
                    // (1) If image is not loaded, it will be loaded at render phase and call
                    // `dirty()` and `textBackgroundColor.image` will be replaced with the loaded
                    // image, and then the right size will be calculated here at the next tick.
                    // See `graphic/helper/text.js`.
                    // (2) If image loaded, and `textBackgroundColor.image` is image src string,
                    // use `imageHelper.findExistImage` to find cached image.
                    // `imageHelper.findExistImage` will always be called here before
                    // `imageHelper.createOrUpdateImage` in `graphic/helper/text.js#renderRichText`
                    // which ensures that image will not be rendered before correct size calcualted.
                    if (bgImg) {
                        bgImg = findExistImage(bgImg);
                        if (isImageReady(bgImg)) {
                            tokenWidth = Math.max(tokenWidth, bgImg.width * tokenHeight / bgImg.height);
                        }
                    }
                }

                var paddingW = textPadding ? textPadding[1] + textPadding[3] : 0;
                tokenWidth += paddingW;

                var remianTruncWidth = truncateWidth != null ? truncateWidth - lineWidth : null;

                if (remianTruncWidth != null && remianTruncWidth < tokenWidth) {
                    if (!tokenWidthNotSpecified || remianTruncWidth < paddingW) {
                        token.text = '';
                        token.textWidth = tokenWidth = 0;
                    }
                    else {
                        token.text = truncateText(
                            token.text, remianTruncWidth - paddingW, font, truncate.ellipsis,
                            {minChar: truncate.minChar}
                        );
                        token.textWidth = getWidth(token.text, font);
                        tokenWidth = token.textWidth + paddingW;
                    }
                }
            }

            lineWidth += (token.width = tokenWidth);
            tokenStyle && (lineHeight = Math.max(lineHeight, token.lineHeight));
        }

        line.width = lineWidth;
        line.lineHeight = lineHeight;
        contentHeight += lineHeight;
        contentWidth = Math.max(contentWidth, lineWidth);
    }

    contentBlock.outerWidth = contentBlock.width = retrieve2(style.textWidth, contentWidth);
    contentBlock.outerHeight = contentBlock.height = retrieve2(style.textHeight, contentHeight);

    if (stlPadding) {
        contentBlock.outerWidth += stlPadding[1] + stlPadding[3];
        contentBlock.outerHeight += stlPadding[0] + stlPadding[2];
    }

    for (var i = 0; i < pendingList.length; i++) {
        var token = pendingList[i];
        var percentWidth = token.percentWidth;
        // Should not base on outerWidth, because token can not be placed out of padding.
        token.width = parseInt(percentWidth, 10) / 100 * contentWidth;
    }

    return contentBlock;
}

function pushTokens(block, str, styleName) {
    var isEmptyStr = str === '';
    var strs = str.split('\n');
    var lines = block.lines;

    for (var i = 0; i < strs.length; i++) {
        var text = strs[i];
        var token = {
            styleName: styleName,
            text: text,
            isLineHolder: !text && !isEmptyStr
        };

        // The first token should be appended to the last line.
        if (!i) {
            var tokens = (lines[lines.length - 1] || (lines[0] = {tokens: []})).tokens;

            // Consider cases:
            // (1) ''.split('\n') => ['', '\n', ''], the '' at the first item
            // (which is a placeholder) should be replaced by new token.
            // (2) A image backage, where token likes {a|}.
            // (3) A redundant '' will affect textAlign in line.
            // (4) tokens with the same tplName should not be merged, because
            // they should be displayed in different box (with border and padding).
            var tokensLen = tokens.length;
            (tokensLen === 1 && tokens[0].isLineHolder)
                ? (tokens[0] = token)
                // Consider text is '', only insert when it is the "lineHolder" or
                // "emptyStr". Otherwise a redundant '' will affect textAlign in line.
                : ((text || !tokensLen || isEmptyStr) && tokens.push(token));
        }
        // Other tokens always start a new line.
        else {
            // If there is '', insert it as a placeholder.
            lines.push({tokens: [token]});
        }
    }
}

function makeFont(style) {
    // FIXME in node-canvas fontWeight is before fontStyle
    // Use `fontSize` `fontFamily` to check whether font properties are defined.
    var font = (style.fontSize || style.fontFamily) && [
        style.fontStyle,
        style.fontWeight,
        (style.fontSize || 12) + 'px',
        // If font properties are defined, `fontFamily` should not be ignored.
        style.fontFamily || 'sans-serif'
    ].join(' ');
    return font && trim(font) || style.textFont || style.font;
}

function buildPath(ctx, shape) {
    var x = shape.x;
    var y = shape.y;
    var width = shape.width;
    var height = shape.height;
    var r = shape.r;
    var r1;
    var r2;
    var r3;
    var r4;

    // Convert width and height to positive for better borderRadius
    if (width < 0) {
        x = x + width;
        width = -width;
    }
    if (height < 0) {
        y = y + height;
        height = -height;
    }

    if (typeof r === 'number') {
        r1 = r2 = r3 = r4 = r;
    }
    else if (r instanceof Array) {
        if (r.length === 1) {
            r1 = r2 = r3 = r4 = r[0];
        }
        else if (r.length === 2) {
            r1 = r3 = r[0];
            r2 = r4 = r[1];
        }
        else if (r.length === 3) {
            r1 = r[0];
            r2 = r4 = r[1];
            r3 = r[2];
        }
        else {
            r1 = r[0];
            r2 = r[1];
            r3 = r[2];
            r4 = r[3];
        }
    }
    else {
        r1 = r2 = r3 = r4 = 0;
    }

    var total;
    if (r1 + r2 > width) {
        total = r1 + r2;
        r1 *= width / total;
        r2 *= width / total;
    }
    if (r3 + r4 > width) {
        total = r3 + r4;
        r3 *= width / total;
        r4 *= width / total;
    }
    if (r2 + r3 > height) {
        total = r2 + r3;
        r2 *= height / total;
        r3 *= height / total;
    }
    if (r1 + r4 > height) {
        total = r1 + r4;
        r1 *= height / total;
        r4 *= height / total;
    }
    ctx.moveTo(x + r1, y);
    ctx.lineTo(x + width - r2, y);
    r2 !== 0 && ctx.arc(x + width - r2, y + r2, r2, -Math.PI / 2, 0);
    ctx.lineTo(x + width, y + height - r3);
    r3 !== 0 && ctx.arc(x + width - r3, y + height - r3, r3, 0, Math.PI / 2);
    ctx.lineTo(x + r4, y + height);
    r4 !== 0 && ctx.arc(x + r4, y + height - r4, r4, Math.PI / 2, Math.PI);
    ctx.lineTo(x, y + r1);
    r1 !== 0 && ctx.arc(x + r1, y + r1, r1, Math.PI, Math.PI * 1.5);
}

// TODO: Have not support 'start', 'end' yet.
var VALID_TEXT_ALIGN = {left: 1, right: 1, center: 1};
var VALID_TEXT_VERTICAL_ALIGN = {top: 1, bottom: 1, middle: 1};

/**
 * @param {module:zrender/graphic/Style} style
 * @return {module:zrender/graphic/Style} The input style.
 */
function normalizeTextStyle(style) {
    normalizeStyle(style);
    each$1(style.rich, normalizeStyle);
    return style;
}

function normalizeStyle(style) {
    if (style) {

        style.font = makeFont(style);

        var textAlign = style.textAlign;
        textAlign === 'middle' && (textAlign = 'center');
        style.textAlign = (
            textAlign == null || VALID_TEXT_ALIGN[textAlign]
        ) ? textAlign : 'left';

        // Compatible with textBaseline.
        var textVerticalAlign = style.textVerticalAlign || style.textBaseline;
        textVerticalAlign === 'center' && (textVerticalAlign = 'middle');
        style.textVerticalAlign = (
            textVerticalAlign == null || VALID_TEXT_VERTICAL_ALIGN[textVerticalAlign]
        ) ? textVerticalAlign : 'top';

        var textPadding = style.textPadding;
        if (textPadding) {
            style.textPadding = normalizeCssArray(style.textPadding);
        }
    }
}

/**
 * @param {CanvasRenderingContext2D} ctx
 * @param {string} text
 * @param {module:zrender/graphic/Style} style
 * @param {Object|boolean} [rect] {x, y, width, height}
 *                  If set false, rect text is not used.
 */
function renderText(hostEl, ctx, text, style, rect) {
    style.rich
        ? renderRichText(hostEl, ctx, text, style, rect)
        : renderPlainText(hostEl, ctx, text, style, rect);
}

function renderPlainText(hostEl, ctx, text, style, rect) {
    var font = setCtx(ctx, 'font', style.font || DEFAULT_FONT);

    var textPadding = style.textPadding;

    var contentBlock = hostEl.__textCotentBlock;
    if (!contentBlock || hostEl.__dirty) {
        contentBlock = hostEl.__textCotentBlock = parsePlainText(
            text, font, textPadding, style.truncate
        );
    }

    var outerHeight = contentBlock.outerHeight;

    var textLines = contentBlock.lines;
    var lineHeight = contentBlock.lineHeight;

    var boxPos = getBoxPosition(outerHeight, style, rect);
    var baseX = boxPos.baseX;
    var baseY = boxPos.baseY;
    var textAlign = boxPos.textAlign;
    var textVerticalAlign = boxPos.textVerticalAlign;

    // Origin of textRotation should be the base point of text drawing.
    applyTextRotation(ctx, style, rect, baseX, baseY);

    var boxY = adjustTextY(baseY, outerHeight, textVerticalAlign);
    var textX = baseX;
    var textY = boxY;

    var needDrawBg = needDrawBackground(style);
    if (needDrawBg || textPadding) {
        // Consider performance, do not call getTextWidth util necessary.
        var textWidth = getWidth(text, font);
        var outerWidth = textWidth;
        textPadding && (outerWidth += textPadding[1] + textPadding[3]);
        var boxX = adjustTextX(baseX, outerWidth, textAlign);

        needDrawBg && drawBackground(hostEl, ctx, style, boxX, boxY, outerWidth, outerHeight);

        if (textPadding) {
            textX = getTextXForPadding(baseX, textAlign, textPadding);
            textY += textPadding[0];
        }
    }

    setCtx(ctx, 'textAlign', textAlign || 'left');
    // Force baseline to be "middle". Otherwise, if using "top", the
    // text will offset downward a little bit in font "Microsoft YaHei".
    setCtx(ctx, 'textBaseline', 'middle');

    // Always set shadowBlur and shadowOffset to avoid leak from displayable.
    setCtx(ctx, 'shadowBlur', style.textShadowBlur || 0);
    setCtx(ctx, 'shadowColor', style.textShadowColor || 'transparent');
    setCtx(ctx, 'shadowOffsetX', style.textShadowOffsetX || 0);
    setCtx(ctx, 'shadowOffsetY', style.textShadowOffsetY || 0);

    // `textBaseline` is set as 'middle'.
    textY += lineHeight / 2;

    var textStrokeWidth = style.textStrokeWidth;
    var textStroke = getStroke(style.textStroke, textStrokeWidth);
    var textFill = getFill(style.textFill);

    if (textStroke) {
        setCtx(ctx, 'lineWidth', textStrokeWidth);
        setCtx(ctx, 'strokeStyle', textStroke);
    }
    if (textFill) {
        setCtx(ctx, 'fillStyle', textFill);
    }

    for (var i = 0; i < textLines.length; i++) {
        // Fill after stroke so the outline will not cover the main part.
        textStroke && ctx.strokeText(textLines[i], textX, textY);
        textFill && ctx.fillText(textLines[i], textX, textY);
        textY += lineHeight;
    }
}

function renderRichText(hostEl, ctx, text, style, rect) {
    var contentBlock = hostEl.__textCotentBlock;

    if (!contentBlock || hostEl.__dirty) {
        contentBlock = hostEl.__textCotentBlock = parseRichText(text, style);
    }

    drawRichText(hostEl, ctx, contentBlock, style, rect);
}

function drawRichText(hostEl, ctx, contentBlock, style, rect) {
    var contentWidth = contentBlock.width;
    var outerWidth = contentBlock.outerWidth;
    var outerHeight = contentBlock.outerHeight;
    var textPadding = style.textPadding;

    var boxPos = getBoxPosition(outerHeight, style, rect);
    var baseX = boxPos.baseX;
    var baseY = boxPos.baseY;
    var textAlign = boxPos.textAlign;
    var textVerticalAlign = boxPos.textVerticalAlign;

    // Origin of textRotation should be the base point of text drawing.
    applyTextRotation(ctx, style, rect, baseX, baseY);

    var boxX = adjustTextX(baseX, outerWidth, textAlign);
    var boxY = adjustTextY(baseY, outerHeight, textVerticalAlign);
    var xLeft = boxX;
    var lineTop = boxY;
    if (textPadding) {
        xLeft += textPadding[3];
        lineTop += textPadding[0];
    }
    var xRight = xLeft + contentWidth;

    needDrawBackground(style) && drawBackground(
        hostEl, ctx, style, boxX, boxY, outerWidth, outerHeight
    );

    for (var i = 0; i < contentBlock.lines.length; i++) {
        var line = contentBlock.lines[i];
        var tokens = line.tokens;
        var tokenCount = tokens.length;
        var lineHeight = line.lineHeight;
        var usedWidth = line.width;

        var leftIndex = 0;
        var lineXLeft = xLeft;
        var lineXRight = xRight;
        var rightIndex = tokenCount - 1;
        var token;

        while (
            leftIndex < tokenCount
            && (token = tokens[leftIndex], !token.textAlign || token.textAlign === 'left')
        ) {
            placeToken(hostEl, ctx, token, style, lineHeight, lineTop, lineXLeft, 'left');
            usedWidth -= token.width;
            lineXLeft += token.width;
            leftIndex++;
        }

        while (
            rightIndex >= 0
            && (token = tokens[rightIndex], token.textAlign === 'right')
        ) {
            placeToken(hostEl, ctx, token, style, lineHeight, lineTop, lineXRight, 'right');
            usedWidth -= token.width;
            lineXRight -= token.width;
            rightIndex--;
        }

        // The other tokens are placed as textAlign 'center' if there is enough space.
        lineXLeft += (contentWidth - (lineXLeft - xLeft) - (xRight - lineXRight) - usedWidth) / 2;
        while (leftIndex <= rightIndex) {
            token = tokens[leftIndex];
            // Consider width specified by user, use 'center' rather than 'left'.
            placeToken(hostEl, ctx, token, style, lineHeight, lineTop, lineXLeft + token.width / 2, 'center');
            lineXLeft += token.width;
            leftIndex++;
        }

        lineTop += lineHeight;
    }
}

function applyTextRotation(ctx, style, rect, x, y) {
    // textRotation only apply in RectText.
    if (rect && style.textRotation) {
        var origin = style.textOrigin;
        if (origin === 'center') {
            x = rect.width / 2 + rect.x;
            y = rect.height / 2 + rect.y;
        }
        else if (origin) {
            x = origin[0] + rect.x;
            y = origin[1] + rect.y;
        }

        ctx.translate(x, y);
        // Positive: anticlockwise
        ctx.rotate(-style.textRotation);
        ctx.translate(-x, -y);
    }
}

function placeToken(hostEl, ctx, token, style, lineHeight, lineTop, x, textAlign) {
    var tokenStyle = style.rich[token.styleName] || {};

    // 'ctx.textBaseline' is always set as 'middle', for sake of
    // the bias of "Microsoft YaHei".
    var textVerticalAlign = token.textVerticalAlign;
    var y = lineTop + lineHeight / 2;
    if (textVerticalAlign === 'top') {
        y = lineTop + token.height / 2;
    }
    else if (textVerticalAlign === 'bottom') {
        y = lineTop + lineHeight - token.height / 2;
    }

    !token.isLineHolder && needDrawBackground(tokenStyle) && drawBackground(
        hostEl,
        ctx,
        tokenStyle,
        textAlign === 'right'
            ? x - token.width
            : textAlign === 'center'
            ? x - token.width / 2
            : x,
        y - token.height / 2,
        token.width,
        token.height
    );

    var textPadding = token.textPadding;
    if (textPadding) {
        x = getTextXForPadding(x, textAlign, textPadding);
        y -= token.height / 2 - textPadding[2] - token.textHeight / 2;
    }

    setCtx(ctx, 'shadowBlur', retrieve3(tokenStyle.textShadowBlur, style.textShadowBlur, 0));
    setCtx(ctx, 'shadowColor', tokenStyle.textShadowColor || style.textShadowColor || 'transparent');
    setCtx(ctx, 'shadowOffsetX', retrieve3(tokenStyle.textShadowOffsetX, style.textShadowOffsetX, 0));
    setCtx(ctx, 'shadowOffsetY', retrieve3(tokenStyle.textShadowOffsetY, style.textShadowOffsetY, 0));

    setCtx(ctx, 'textAlign', textAlign);
    // Force baseline to be "middle". Otherwise, if using "top", the
    // text will offset downward a little bit in font "Microsoft YaHei".
    setCtx(ctx, 'textBaseline', 'middle');

    setCtx(ctx, 'font', token.font || DEFAULT_FONT);

    var textStroke = getStroke(tokenStyle.textStroke || style.textStroke, textStrokeWidth);
    var textFill = getFill(tokenStyle.textFill || style.textFill);
    var textStrokeWidth = retrieve2(tokenStyle.textStrokeWidth, style.textStrokeWidth);

    // Fill after stroke so the outline will not cover the main part.
    if (textStroke) {
        setCtx(ctx, 'lineWidth', textStrokeWidth);
        setCtx(ctx, 'strokeStyle', textStroke);
        ctx.strokeText(token.text, x, y);
    }
    if (textFill) {
        setCtx(ctx, 'fillStyle', textFill);
        ctx.fillText(token.text, x, y);
    }
}

function needDrawBackground(style) {
    return style.textBackgroundColor
        || (style.textBorderWidth && style.textBorderColor);
}

// style: {textBackgroundColor, textBorderWidth, textBorderColor, textBorderRadius}
// shape: {x, y, width, height}
function drawBackground(hostEl, ctx, style, x, y, width, height) {
    var textBackgroundColor = style.textBackgroundColor;
    var textBorderWidth = style.textBorderWidth;
    var textBorderColor = style.textBorderColor;
    var isPlainBg = isString(textBackgroundColor);

    setCtx(ctx, 'shadowBlur', style.textBoxShadowBlur || 0);
    setCtx(ctx, 'shadowColor', style.textBoxShadowColor || 'transparent');
    setCtx(ctx, 'shadowOffsetX', style.textBoxShadowOffsetX || 0);
    setCtx(ctx, 'shadowOffsetY', style.textBoxShadowOffsetY || 0);

    if (isPlainBg || (textBorderWidth && textBorderColor)) {
        ctx.beginPath();
        var textBorderRadius = style.textBorderRadius;
        if (!textBorderRadius) {
            ctx.rect(x, y, width, height);
        }
        else {
            buildPath(ctx, {
                x: x, y: y, width: width, height: height, r: textBorderRadius
            });
        }
        ctx.closePath();
    }

    if (isPlainBg) {
        setCtx(ctx, 'fillStyle', textBackgroundColor);
        ctx.fill();
    }
    else if (isObject$1(textBackgroundColor)) {
        var image = textBackgroundColor.image;

        image = createOrUpdateImage(
            image, null, hostEl, onBgImageLoaded, textBackgroundColor
        );
        if (image && isImageReady(image)) {
            ctx.drawImage(image, x, y, width, height);
        }
    }

    if (textBorderWidth && textBorderColor) {
        setCtx(ctx, 'lineWidth', textBorderWidth);
        setCtx(ctx, 'strokeStyle', textBorderColor);
        ctx.stroke();
    }
}

function onBgImageLoaded(image, textBackgroundColor) {
    // Replace image, so that `contain/text.js#parseRichText`
    // will get correct result in next tick.
    textBackgroundColor.image = image;
}

function getBoxPosition(blockHeiht, style, rect) {
    var baseX = style.x || 0;
    var baseY = style.y || 0;
    var textAlign = style.textAlign;
    var textVerticalAlign = style.textVerticalAlign;

    // Text position represented by coord
    if (rect) {
        var textPosition = style.textPosition;
        if (textPosition instanceof Array) {
            // Percent
            baseX = rect.x + parsePercent(textPosition[0], rect.width);
            baseY = rect.y + parsePercent(textPosition[1], rect.height);
        }
        else {
            var res = adjustTextPositionOnRect(
                textPosition, rect, style.textDistance
            );
            baseX = res.x;
            baseY = res.y;
            // Default align and baseline when has textPosition
            textAlign = textAlign || res.textAlign;
            textVerticalAlign = textVerticalAlign || res.textVerticalAlign;
        }

        // textOffset is only support in RectText, otherwise
        // we have to adjust boundingRect for textOffset.
        var textOffset = style.textOffset;
        if (textOffset) {
            baseX += textOffset[0];
            baseY += textOffset[1];
        }
    }

    return {
        baseX: baseX,
        baseY: baseY,
        textAlign: textAlign,
        textVerticalAlign: textVerticalAlign
    };
}

function setCtx(ctx, prop, value) {
    ctx[prop] = fixShadow(ctx, prop, value);
    return ctx[prop];
}

/**
 * @param {string} [stroke] If specified, do not check style.textStroke.
 * @param {string} [lineWidth] If specified, do not check style.textStroke.
 * @param {number} style
 */
function getStroke(stroke, lineWidth) {
    return (stroke == null || lineWidth <= 0 || stroke === 'transparent' || stroke === 'none')
        ? null
        // TODO pattern and gradient?
        : (stroke.image || stroke.colorStops)
        ? '#000'
        : stroke;
}

function getFill(fill) {
    return (fill == null || fill === 'none')
        ? null
        // TODO pattern and gradient?
        : (fill.image || fill.colorStops)
        ? '#000'
        : fill;
}

function parsePercent(value, maxValue) {
    if (typeof value === 'string') {
        if (value.lastIndexOf('%') >= 0) {
            return parseFloat(value) / 100 * maxValue;
        }
        return parseFloat(value);
    }
    return value;
}

function getTextXForPadding(x, textAlign, textPadding) {
    return textAlign === 'right'
        ? (x - textPadding[1])
        : textAlign === 'center'
        ? (x + textPadding[3] / 2 - textPadding[1] / 2)
        : (x + textPadding[3]);
}

/**
 * @param {string} text
 * @param {module:zrender/Style} style
 * @return {boolean}
 */
function needDrawText(text, style) {
    return text != null
        && (text
            || style.textBackgroundColor
            || (style.textBorderWidth && style.textBorderColor)
            || style.textPadding
        );
}

/**
 * Mixin for drawing text in a element bounding rect
 * @module zrender/mixin/RectText
 */

var tmpRect$1 = new BoundingRect();

var RectText = function () {};

RectText.prototype = {

    constructor: RectText,

    /**
     * Draw text in a rect with specified position.
     * @param  {CanvasRenderingContext2D} ctx
     * @param  {Object} rect Displayable rect
     */
    drawRectText: function (ctx, rect) {
        var style = this.style;

        rect = style.textRect || rect;

        // Optimize, avoid normalize every time.
        this.__dirty && normalizeTextStyle(style, true);

        var text = style.text;

        // Convert to string
        text != null && (text += '');

        if (!needDrawText(text, style)) {
            return;
        }

        // FIXME
        ctx.save();

        // Transform rect to view space
        var transform = this.transform;
        if (!style.transformText) {
            if (transform) {
                tmpRect$1.copy(rect);
                tmpRect$1.applyTransform(transform);
                rect = tmpRect$1;
            }
        }
        else {
            this.setTransform(ctx);
        }

        // transformText and textRotation can not be used at the same time.
        renderText(this, ctx, text, style, rect);

        ctx.restore();
    }
};

/**
 * 可绘制的图形基类
 * Base class of all displayable graphic objects
 * @module zrender/graphic/Displayable
 */


/**
 * @alias module:zrender/graphic/Displayable
 * @extends module:zrender/Element
 * @extends module:zrender/graphic/mixin/RectText
 */
function Displayable(opts) {

    opts = opts || {};

    Element.call(this, opts);

    // Extend properties
    for (var name in opts) {
        if (
            opts.hasOwnProperty(name) &&
            name !== 'style'
        ) {
            this[name] = opts[name];
        }
    }

    /**
     * @type {module:zrender/graphic/Style}
     */
    this.style = new Style(opts.style, this);

    this._rect = null;
    // Shapes for cascade clipping.
    this.__clipPaths = [];

    // FIXME Stateful must be mixined after style is setted
    // Stateful.call(this, opts);
}

Displayable.prototype = {

    constructor: Displayable,

    type: 'displayable',

    /**
     * Displayable 是否为脏，Painter 中会根据该标记判断是否需要是否需要重新绘制
     * Dirty flag. From which painter will determine if this displayable object needs brush
     * @name module:zrender/graphic/Displayable#__dirty
     * @type {boolean}
     */
    __dirty: true,

    /**
     * 图形是否可见，为true时不绘制图形，但是仍能触发鼠标事件
     * If ignore drawing of the displayable object. Mouse event will still be triggered
     * @name module:/zrender/graphic/Displayable#invisible
     * @type {boolean}
     * @default false
     */
    invisible: false,

    /**
     * @name module:/zrender/graphic/Displayable#z
     * @type {number}
     * @default 0
     */
    z: 0,

    /**
     * @name module:/zrender/graphic/Displayable#z
     * @type {number}
     * @default 0
     */
    z2: 0,

    /**
     * z层level，决定绘画在哪层canvas中
     * @name module:/zrender/graphic/Displayable#zlevel
     * @type {number}
     * @default 0
     */
    zlevel: 0,

    /**
     * 是否可拖拽
     * @name module:/zrender/graphic/Displayable#draggable
     * @type {boolean}
     * @default false
     */
    draggable: false,

    /**
     * 是否正在拖拽
     * @name module:/zrender/graphic/Displayable#draggable
     * @type {boolean}
     * @default false
     */
    dragging: false,

    /**
     * 是否相应鼠标事件
     * @name module:/zrender/graphic/Displayable#silent
     * @type {boolean}
     * @default false
     */
    silent: false,

    /**
     * If enable culling
     * @type {boolean}
     * @default false
     */
    culling: false,

    /**
     * Mouse cursor when hovered
     * @name module:/zrender/graphic/Displayable#cursor
     * @type {string}
     */
    cursor: 'pointer',

    /**
     * If hover area is bounding rect
     * @name module:/zrender/graphic/Displayable#rectHover
     * @type {string}
     */
    rectHover: false,

    /**
     * Render the element progressively when the value >= 0,
     * usefull for large data.
     * @type {boolean}
     */
    progressive: false,

    /**
     * @type {boolean}
     */
    incremental: false,
    // inplace is used with incremental
    inplace: false,

    beforeBrush: function (ctx) {},

    afterBrush: function (ctx) {},

    /**
     * 图形绘制方法
     * @param {CanvasRenderingContext2D} ctx
     */
    // Interface
    brush: function (ctx, prevEl) {},

    /**
     * 获取最小包围盒
     * @return {module:zrender/core/BoundingRect}
     */
    // Interface
    getBoundingRect: function () {},

    /**
     * 判断坐标 x, y 是否在图形上
     * If displayable element contain coord x, y
     * @param  {number} x
     * @param  {number} y
     * @return {boolean}
     */
    contain: function (x, y) {
        return this.rectContain(x, y);
    },

    /**
     * @param  {Function} cb
     * @param  {}   context
     */
    traverse: function (cb, context) {
        cb.call(context, this);
    },

    /**
     * 判断坐标 x, y 是否在图形的包围盒上
     * If bounding rect of element contain coord x, y
     * @param  {number} x
     * @param  {number} y
     * @return {boolean}
     */
    rectContain: function (x, y) {
        var coord = this.transformCoordToLocal(x, y);
        var rect = this.getBoundingRect();
        return rect.contain(coord[0], coord[1]);
    },

    /**
     * 标记图形元素为脏，并且在下一帧重绘
     * Mark displayable element dirty and refresh next frame
     */
    dirty: function () {
        this.__dirty = true;

        this._rect = null;

        this.__zr && this.__zr.refresh();
    },

    /**
     * 图形是否会触发事件
     * If displayable object binded any event
     * @return {boolean}
     */
    // TODO, 通过 bind 绑定的事件
    // isSilent: function () {
    //     return !(
    //         this.hoverable || this.draggable
    //         || this.onmousemove || this.onmouseover || this.onmouseout
    //         || this.onmousedown || this.onmouseup || this.onclick
    //         || this.ondragenter || this.ondragover || this.ondragleave
    //         || this.ondrop
    //     );
    // },
    /**
     * Alias for animate('style')
     * @param {boolean} loop
     */
    animateStyle: function (loop) {
        return this.animate('style', loop);
    },

    attrKV: function (key, value) {
        if (key !== 'style') {
            Element.prototype.attrKV.call(this, key, value);
        }
        else {
            this.style.set(value);
        }
    },

    /**
     * @param {Object|string} key
     * @param {*} value
     */
    setStyle: function (key, value) {
        this.style.set(key, value);
        this.dirty(false);
        return this;
    },

    /**
     * Use given style object
     * @param  {Object} obj
     */
    useStyle: function (obj) {
        this.style = new Style(obj, this);
        this.dirty(false);
        return this;
    }
};

inherits(Displayable, Element);

mixin(Displayable, RectText);

/**
 * @alias zrender/graphic/Image
 * @extends module:zrender/graphic/Displayable
 * @constructor
 * @param {Object} opts
 */
function ZImage(opts) {
    Displayable.call(this, opts);
}

ZImage.prototype = {

    constructor: ZImage,

    type: 'image',

    brush: function (ctx, prevEl) {
        var style = this.style;
        var src = style.image;

        // Must bind each time
        style.bind(ctx, this, prevEl);

        var image = this._image = createOrUpdateImage(
            src,
            this._image,
            this,
            this.onload
        );

        if (!image || !isImageReady(image)) {
            return;
        }

        // 图片已经加载完成
        // if (image.nodeName.toUpperCase() == 'IMG') {
        //     if (!image.complete) {
        //         return;
        //     }
        // }
        // Else is canvas

        var x = style.x || 0;
        var y = style.y || 0;
        var width = style.width;
        var height = style.height;
        var aspect = image.width / image.height;
        if (width == null && height != null) {
            // Keep image/height ratio
            width = height * aspect;
        }
        else if (height == null && width != null) {
            height = width / aspect;
        }
        else if (width == null && height == null) {
            width = image.width;
            height = image.height;
        }

        // 设置transform
        this.setTransform(ctx);

        if (style.sWidth && style.sHeight) {
            var sx = style.sx || 0;
            var sy = style.sy || 0;
            ctx.drawImage(
                image,
                sx, sy, style.sWidth, style.sHeight,
                x, y, width, height
            );
        }
        else if (style.sx && style.sy) {
            var sx = style.sx;
            var sy = style.sy;
            var sWidth = width - sx;
            var sHeight = height - sy;
            ctx.drawImage(
                image,
                sx, sy, sWidth, sHeight,
                x, y, width, height
            );
        }
        else {
            ctx.drawImage(image, x, y, width, height);
        }

        // Draw rect text
        if (style.text != null) {
            // Only restore transform when needs draw text.
            this.restoreTransform(ctx);    
            this.drawRectText(ctx, this.getBoundingRect());
        }
    },

    getBoundingRect: function () {
        var style = this.style;
        if (! this._rect) {
            this._rect = new BoundingRect(
                style.x || 0, style.y || 0, style.width || 0, style.height || 0
            );
        }
        return this._rect;
    }
};

inherits(ZImage, Displayable);

var HOVER_LAYER_ZLEVEL = 1e5;
var CANVAS_ZLEVEL = 314159;

var EL_AFTER_INCREMENTAL_INC = 0.01;
var INCREMENTAL_INC = 0.001;

function parseInt10(val) {
    return parseInt(val, 10);
}

function isLayerValid(layer) {
    if (!layer) {
        return false;
    }

    if (layer.__builtin__) {
        return true;
    }

    if (typeof(layer.resize) !== 'function'
        || typeof(layer.refresh) !== 'function'
    ) {
        return false;
    }

    return true;
}

var tmpRect = new BoundingRect(0, 0, 0, 0);
var viewRect = new BoundingRect(0, 0, 0, 0);
function isDisplayableCulled(el, width, height) {
    tmpRect.copy(el.getBoundingRect());
    if (el.transform) {
        tmpRect.applyTransform(el.transform);
    }
    viewRect.width = width;
    viewRect.height = height;
    return !tmpRect.intersect(viewRect);
}

function isClipPathChanged(clipPaths, prevClipPaths) {
    if (clipPaths == prevClipPaths) { // Can both be null or undefined
        return false;
    }

    if (!clipPaths || !prevClipPaths || (clipPaths.length !== prevClipPaths.length)) {
        return true;
    }
    for (var i = 0; i < clipPaths.length; i++) {
        if (clipPaths[i] !== prevClipPaths[i]) {
            return true;
        }
    }
}

function doClip(clipPaths, ctx) {
    for (var i = 0; i < clipPaths.length; i++) {
        var clipPath = clipPaths[i];

        clipPath.setTransform(ctx);
        ctx.beginPath();
        clipPath.buildPath(ctx, clipPath.shape);
        ctx.clip();
        // Transform back
        clipPath.restoreTransform(ctx);
    }
}

function createRoot(width, height) {
    var domRoot = document.createElement('div');

    // domRoot.onselectstart = returnFalse; // 避免页面选中的尴尬
    domRoot.style.cssText = [
        'position:relative',
        'overflow:hidden',
        'width:' + width + 'px',
        'height:' + height + 'px',
        'padding:0',
        'margin:0',
        'border-width:0'
    ].join(';') + ';';

    return domRoot;
}


/**
 * @alias module:zrender/Painter
 * @constructor
 * @param {HTMLElement} root 绘图容器
 * @param {module:zrender/Storage} storage
 * @param {Object} opts
 */
var Painter = function (root, storage, opts) {

    this.type = 'canvas';

    // In node environment using node-canvas
    var singleCanvas = !root.nodeName // In node ?
        || root.nodeName.toUpperCase() === 'CANVAS';

    this._opts = opts = extend({}, opts || {});

    /**
     * @type {number}
     */
    this.dpr = opts.devicePixelRatio || devicePixelRatio;
    /**
     * @type {boolean}
     * @private
     */
    this._singleCanvas = singleCanvas;
    /**
     * 绘图容器
     * @type {HTMLElement}
     */
    this.root = root;

    var rootStyle = root.style;

    if (rootStyle) {
        rootStyle['-webkit-tap-highlight-color'] = 'transparent';
        rootStyle['-webkit-user-select'] =
        rootStyle['user-select'] =
        rootStyle['-webkit-touch-callout'] = 'none';

        root.innerHTML = '';
    }

    /**
     * @type {module:zrender/Storage}
     */
    this.storage = storage;

    /**
     * @type {Array.<number>}
     * @private
     */
    var zlevelList = this._zlevelList = [];

    /**
     * @type {Object.<string, module:zrender/Layer>}
     * @private
     */
    var layers = this._layers = {};

    /**
     * @type {Object.<string, Object>}
     * @private
     */
    this._layerConfig = {};

    /**
     * zrender will do compositing when root is a canvas and have multiple zlevels.
     */
    this._needsManuallyCompositing = false;

    if (!singleCanvas) {
        this._width = this._getSize(0);
        this._height = this._getSize(1);

        var domRoot = this._domRoot = createRoot(
            this._width, this._height
        );
        root.appendChild(domRoot);
    }
    else {
        var width = root.width;
        var height = root.height;

        if (opts.width != null) {
            width = opts.width;
        }
        if (opts.height != null) {
            height = opts.height;
        }
        this.dpr = opts.devicePixelRatio || 1;

        // Use canvas width and height directly
        root.width = width * this.dpr;
        root.height = height * this.dpr;

        this._width = width;
        this._height = height;

        // Create layer if only one given canvas
        // Device can be specified to create a high dpi image.
        var mainLayer = new Layer(root, this, this.dpr);
        mainLayer.__builtin__ = true;
        mainLayer.initContext();
        // FIXME Use canvas width and height
        // mainLayer.resize(width, height);
        layers[CANVAS_ZLEVEL] = mainLayer;
        // Not use common zlevel.
        zlevelList.push(CANVAS_ZLEVEL);

        this._domRoot = root;
    }

    /**
     * @type {module:zrender/Layer}
     * @private
     */
    this._hoverlayer = null;

    this._hoverElements = [];
};

Painter.prototype = {

    constructor: Painter,

    getType: function () {
        return 'canvas';
    },

    /**
     * If painter use a single canvas
     * @return {boolean}
     */
    isSingleCanvas: function () {
        return this._singleCanvas;
    },
    /**
     * @return {HTMLDivElement}
     */
    getViewportRoot: function () {
        return this._domRoot;
    },

    getViewportRootOffset: function () {
        var viewportRoot = this.getViewportRoot();
        if (viewportRoot) {
            return {
                offsetLeft: viewportRoot.offsetLeft || 0,
                offsetTop: viewportRoot.offsetTop || 0
            };
        }
    },

    /**
     * 刷新
     * @param {boolean} [paintAll=false] 强制绘制所有displayable
     */
    refresh: function (paintAll) {

        var list = this.storage.getDisplayList(true);

        var zlevelList = this._zlevelList;

        this._redrawId = Math.random();

        this._paintList(list, paintAll, this._redrawId);

        // Paint custum layers
        for (var i = 0; i < zlevelList.length; i++) {
            var z = zlevelList[i];
            var layer = this._layers[z];
            if (!layer.__builtin__ && layer.refresh) {
                var clearColor = i === 0 ? this._backgroundColor : null;
                layer.refresh(clearColor);
            }
        }

        this.refreshHover();

        return this;
    },

    addHover: function (el, hoverStyle) {
        if (el.__hoverMir) {
            return;
        }
        var elMirror = new el.constructor({
            style: el.style,
            shape: el.shape
        });
        elMirror.__from = el;
        el.__hoverMir = elMirror;
        elMirror.setStyle(hoverStyle);
        this._hoverElements.push(elMirror);
    },

    removeHover: function (el) {
        var elMirror = el.__hoverMir;
        var hoverElements = this._hoverElements;
        var idx = indexOf(hoverElements, elMirror);
        if (idx >= 0) {
            hoverElements.splice(idx, 1);
        }
        el.__hoverMir = null;
    },

    clearHover: function (el) {
        var hoverElements = this._hoverElements;
        for (var i = 0; i < hoverElements.length; i++) {
            var from = hoverElements[i].__from;
            if (from) {
                from.__hoverMir = null;
            }
        }
        hoverElements.length = 0;
    },

    refreshHover: function () {
        var hoverElements = this._hoverElements;
        var len = hoverElements.length;
        var hoverLayer = this._hoverlayer;
        hoverLayer && hoverLayer.clear();

        if (!len) {
            return;
        }
        sort(hoverElements, this.storage.displayableSortFunc);

        // Use a extream large zlevel
        // FIXME?
        if (!hoverLayer) {
            hoverLayer = this._hoverlayer = this.getLayer(HOVER_LAYER_ZLEVEL);
        }

        var scope = {};
        hoverLayer.ctx.save();
        for (var i = 0; i < len;) {
            var el = hoverElements[i];
            var originalEl = el.__from;
            // Original el is removed
            // PENDING
            if (!(originalEl && originalEl.__zr)) {
                hoverElements.splice(i, 1);
                originalEl.__hoverMir = null;
                len--;
                continue;
            }
            i++;

            // Use transform
            // FIXME style and shape ?
            if (!originalEl.invisible) {
                el.transform = originalEl.transform;
                el.invTransform = originalEl.invTransform;
                el.__clipPaths = originalEl.__clipPaths;
                // el.
                this._doPaintEl(el, hoverLayer, true, scope);
            }
        }
        hoverLayer.ctx.restore();
    },

    getHoverLayer: function () {
        return this.getLayer(HOVER_LAYER_ZLEVEL);
    },

    _paintList: function (list, paintAll, redrawId) {
        if (this._redrawId !== redrawId) {
            return;
        }

        paintAll = paintAll || false;

        this._updateLayerStatus(list);

        var finished = this._doPaintList(list, paintAll);

        if (this._needsManuallyCompositing) {
            this._compositeManually();
        }

        if (!finished) {
            var self = this;
            requestAnimationFrame(function () {
                self._paintList(list, paintAll, redrawId);
            });
        }
    },

    _compositeManually: function () {
        var ctx = this.getLayer(CANVAS_ZLEVEL).ctx;
        var width = this._domRoot.width;
        var height = this._domRoot.height;
        ctx.clearRect(0, 0, width, height);
        // PENDING, If only builtin layer?
        this.eachBuiltinLayer(function (layer) {
            if (layer.virtual) {
                ctx.drawImage(layer.dom, 0, 0, width, height);
            }
        });
    },

    _doPaintList: function (list, paintAll) {
        var layerList = [];
        for (var zi = 0; zi < this._zlevelList.length; zi++) {
            var zlevel = this._zlevelList[zi];
            var layer = this._layers[zlevel];
            if (layer.__builtin__
                && layer !== this._hoverlayer
                && (layer.__dirty || paintAll)
            ) {
                layerList.push(layer);
            }
        }

        var finished = true;

        for (var k = 0; k < layerList.length; k++) {
            var layer = layerList[k];
            var ctx = layer.ctx;
            var scope = {};
            ctx.save();

            var start = paintAll ? layer.__startIndex : layer.__drawIndex;

            var useTimer = !paintAll && layer.incremental && Date.now;
            var startTime = useTimer && Date.now();

            var clearColor = layer.zlevel === this._zlevelList[0]
                ? this._backgroundColor : null;
            // All elements in this layer are cleared.
            if (layer.__startIndex === layer.__endIndex) {
                layer.clear(false, clearColor);
            }
            else if (start === layer.__startIndex) {
                var firstEl = list[start];
                if (!firstEl.incremental || !firstEl.notClear || paintAll) {
                    layer.clear(false, clearColor);
                }
            }
            if (start === -1) {
                console.error('For some unknown reason. drawIndex is -1');
                start = layer.__startIndex;
            }
            for (var i = start; i < layer.__endIndex; i++) {
                var el = list[i];
                this._doPaintEl(el, layer, paintAll, scope);
                el.__dirty = false;

                if (useTimer) {
                    // Date.now can be executed in 13,025,305 ops/second.
                    var dTime = Date.now() - startTime;
                    // Give 15 millisecond to draw.
                    // The rest elements will be drawn in the next frame.
                    if (dTime > 15) {
                        break;
                    }
                }
            }

            layer.__drawIndex = i;

            if (layer.__drawIndex < layer.__endIndex) {
                finished = false;
            }

            if (scope.prevElClipPaths) {
                // Needs restore the state. If last drawn element is in the clipping area.
                ctx.restore();
            }

            ctx.restore();
        }

        if (env$1.wxa) {
            // Flush for weixin application
            each$1(this._layers, function (layer) {
                if (layer && layer.ctx && layer.ctx.draw) {
                    layer.ctx.draw();
                }
            });
        }

        return finished;
    },

    _doPaintEl: function (el, currentLayer, forcePaint, scope) {
        var ctx = currentLayer.ctx;
        var m = el.transform;
        if (
            (currentLayer.__dirty || forcePaint)
            // Ignore invisible element
            && !el.invisible
            // Ignore transparent element
            && el.style.opacity !== 0
            // Ignore scale 0 element, in some environment like node-canvas
            // Draw a scale 0 element can cause all following draw wrong
            // And setTransform with scale 0 will cause set back transform failed.
            && !(m && !m[0] && !m[3])
            // Ignore culled element
            && !(el.culling && isDisplayableCulled(el, this._width, this._height))
        ) {

            var clipPaths = el.__clipPaths;

            // Optimize when clipping on group with several elements
            if (!scope.prevElClipPaths
                || isClipPathChanged(clipPaths, scope.prevElClipPaths)
            ) {
                // If has previous clipping state, restore from it
                if (scope.prevElClipPaths) {
                    currentLayer.ctx.restore();
                    scope.prevElClipPaths = null;

                    // Reset prevEl since context has been restored
                    scope.prevEl = null;
                }
                // New clipping state
                if (clipPaths) {
                    ctx.save();
                    doClip(clipPaths, ctx);
                    scope.prevElClipPaths = clipPaths;
                }
            }
            el.beforeBrush && el.beforeBrush(ctx);

            el.brush(ctx, scope.prevEl || null);
            scope.prevEl = el;

            el.afterBrush && el.afterBrush(ctx);
        }
    },

    /**
     * 获取 zlevel 所在层，如果不存在则会创建一个新的层
     * @param {number} zlevel
     * @param {boolean} virtual Virtual layer will not be inserted into dom.
     * @return {module:zrender/Layer}
     */
    getLayer: function (zlevel, virtual) {
        if (this._singleCanvas && !this._needsManuallyCompositing) {
            zlevel = CANVAS_ZLEVEL;
        }
        var layer = this._layers[zlevel];
        if (!layer) {
            // Create a new layer
            layer = new Layer('zr_' + zlevel, this, this.dpr);
            layer.zlevel = zlevel;
            layer.__builtin__ = true;

            if (this._layerConfig[zlevel]) {
                merge(layer, this._layerConfig[zlevel], true);
            }

            if (virtual) {
                layer.virtual = virtual;
            }

            this.insertLayer(zlevel, layer);

            // Context is created after dom inserted to document
            // Or excanvas will get 0px clientWidth and clientHeight
            layer.initContext();
        }

        return layer;
    },

    insertLayer: function (zlevel, layer) {

        var layersMap = this._layers;
        var zlevelList = this._zlevelList;
        var len = zlevelList.length;
        var prevLayer = null;
        var i = -1;
        var domRoot = this._domRoot;

        if (layersMap[zlevel]) {
            log$1('ZLevel ' + zlevel + ' has been used already');
            return;
        }
        // Check if is a valid layer
        if (!isLayerValid(layer)) {
            log$1('Layer of zlevel ' + zlevel + ' is not valid');
            return;
        }

        if (len > 0 && zlevel > zlevelList[0]) {
            for (i = 0; i < len - 1; i++) {
                if (
                    zlevelList[i] < zlevel
                    && zlevelList[i + 1] > zlevel
                ) {
                    break;
                }
            }
            prevLayer = layersMap[zlevelList[i]];
        }
        zlevelList.splice(i + 1, 0, zlevel);

        layersMap[zlevel] = layer;

        // Vitual layer will not directly show on the screen.
        // (It can be a WebGL layer and assigned to a ZImage element)
        // But it still under management of zrender.
        if (!layer.virtual) {
            if (prevLayer) {
                var prevDom = prevLayer.dom;
                if (prevDom.nextSibling) {
                    domRoot.insertBefore(
                        layer.dom,
                        prevDom.nextSibling
                    );
                }
                else {
                    domRoot.appendChild(layer.dom);
                }
            }
            else {
                if (domRoot.firstChild) {
                    domRoot.insertBefore(layer.dom, domRoot.firstChild);
                }
                else {
                    domRoot.appendChild(layer.dom);
                }
            }
        }
    },

    // Iterate each layer
    eachLayer: function (cb, context) {
        var zlevelList = this._zlevelList;
        var z;
        var i;
        for (i = 0; i < zlevelList.length; i++) {
            z = zlevelList[i];
            cb.call(context, this._layers[z], z);
        }
    },

    // Iterate each buildin layer
    eachBuiltinLayer: function (cb, context) {
        var zlevelList = this._zlevelList;
        var layer;
        var z;
        var i;
        for (i = 0; i < zlevelList.length; i++) {
            z = zlevelList[i];
            layer = this._layers[z];
            if (layer.__builtin__) {
                cb.call(context, layer, z);
            }
        }
    },

    // Iterate each other layer except buildin layer
    eachOtherLayer: function (cb, context) {
        var zlevelList = this._zlevelList;
        var layer;
        var z;
        var i;
        for (i = 0; i < zlevelList.length; i++) {
            z = zlevelList[i];
            layer = this._layers[z];
            if (!layer.__builtin__) {
                cb.call(context, layer, z);
            }
        }
    },

    /**
     * 获取所有已创建的层
     * @param {Array.<module:zrender/Layer>} [prevLayer]
     */
    getLayers: function () {
        return this._layers;
    },

    _updateLayerStatus: function (list) {

        this.eachBuiltinLayer(function (layer, z) {
            layer.__dirty = layer.__used = false;
        });

        function updatePrevLayer(idx) {
            if (prevLayer) {
                if (prevLayer.__endIndex !== idx) {
                    prevLayer.__dirty = true;
                }
                prevLayer.__endIndex = idx;
            }
        }

        if (this._singleCanvas) {
            for (var i = 1; i < list.length; i++) {
                var el = list[i];
                if (el.zlevel !== list[i - 1].zlevel || el.incremental) {
                    this._needsManuallyCompositing = true;
                    break;
                }
            }
        }

        var prevLayer = null;
        var incrementalLayerCount = 0;
        for (var i = 0; i < list.length; i++) {
            var el = list[i];
            var zlevel = el.zlevel;
            var layer;
            // PENDING If change one incremental element style ?
            // TODO Where there are non-incremental elements between incremental elements.
            if (el.incremental) {
                layer = this.getLayer(zlevel + INCREMENTAL_INC, this._needsManuallyCompositing);
                layer.incremental = true;
                incrementalLayerCount = 1;
            }
            else {
                layer = this.getLayer(zlevel + (incrementalLayerCount > 0 ? EL_AFTER_INCREMENTAL_INC : 0), this._needsManuallyCompositing);
            }

            if (!layer.__builtin__) {
                log$1('ZLevel ' + zlevel + ' has been used by unkown layer ' + layer.id);
            }

            if (layer !== prevLayer) {
                layer.__used = true;
                if (layer.__startIndex !== i) {
                    layer.__dirty = true;
                }
                layer.__startIndex = i;
                if (!layer.incremental) {
                    layer.__drawIndex = i;
                }
                else {
                    // Mark layer draw index needs to update.
                    layer.__drawIndex = -1;
                }
                updatePrevLayer(i);
                prevLayer = layer;
            }
            if (el.__dirty) {
                layer.__dirty = true;
                if (layer.incremental && layer.__drawIndex < 0) {
                    // Start draw from the first dirty element.
                    layer.__drawIndex = i;
                }
            }
        }

        updatePrevLayer(i);

        this.eachBuiltinLayer(function (layer, z) {
            // Used in last frame but not in this frame. Needs clear
            if (!layer.__used && layer.getElementCount() > 0) {
                layer.__dirty = true;
                layer.__startIndex = layer.__endIndex = layer.__drawIndex = 0;
            }
            // For incremental layer. In case start index changed and no elements are dirty.
            if (layer.__dirty && layer.__drawIndex < 0) {
                layer.__drawIndex = layer.__startIndex;
            }
        });
    },

    /**
     * 清除hover层外所有内容
     */
    clear: function () {
        this.eachBuiltinLayer(this._clearLayer);
        return this;
    },

    _clearLayer: function (layer) {
        layer.clear();
    },

    setBackgroundColor: function (backgroundColor) {
        this._backgroundColor = backgroundColor;
    },

    /**
     * 修改指定zlevel的绘制参数
     *
     * @param {string} zlevel
     * @param {Object} config 配置对象
     * @param {string} [config.clearColor=0] 每次清空画布的颜色
     * @param {string} [config.motionBlur=false] 是否开启动态模糊
     * @param {number} [config.lastFrameAlpha=0.7]
     *                 在开启动态模糊的时候使用，与上一帧混合的alpha值，值越大尾迹越明显
     */
    configLayer: function (zlevel, config) {
        if (config) {
            var layerConfig = this._layerConfig;
            if (!layerConfig[zlevel]) {
                layerConfig[zlevel] = config;
            }
            else {
                merge(layerConfig[zlevel], config, true);
            }

            for (var i = 0; i < this._zlevelList.length; i++) {
                var _zlevel = this._zlevelList[i];
                if (_zlevel === zlevel || _zlevel === zlevel + EL_AFTER_INCREMENTAL_INC) {
                    var layer = this._layers[_zlevel];
                    merge(layer, layerConfig[zlevel], true);
                }
            }
        }
    },

    /**
     * 删除指定层
     * @param {number} zlevel 层所在的zlevel
     */
    delLayer: function (zlevel) {
        var layers = this._layers;
        var zlevelList = this._zlevelList;
        var layer = layers[zlevel];
        if (!layer) {
            return;
        }
        layer.dom.parentNode.removeChild(layer.dom);
        delete layers[zlevel];

        zlevelList.splice(indexOf(zlevelList, zlevel), 1);
    },

    /**
     * 区域大小变化后重绘
     */
    resize: function (width, height) {
        if (!this._domRoot.style) { // Maybe in node or worker
            if (width == null || height == null) {
                return;
            }
            this._width = width;
            this._height = height;

            this.getLayer(CANVAS_ZLEVEL).resize(width, height);
        }
        else {
            var domRoot = this._domRoot;
            // FIXME Why ?
            domRoot.style.display = 'none';

            // Save input w/h
            var opts = this._opts;
            width != null && (opts.width = width);
            height != null && (opts.height = height);

            width = this._getSize(0);
            height = this._getSize(1);

            domRoot.style.display = '';

            // 优化没有实际改变的resize
            if (this._width != width || height != this._height) {
                domRoot.style.width = width + 'px';
                domRoot.style.height = height + 'px';

                for (var id in this._layers) {
                    if (this._layers.hasOwnProperty(id)) {
                        this._layers[id].resize(width, height);
                    }
                }
                each$1(this._progressiveLayers, function (layer) {
                    layer.resize(width, height);
                });

                this.refresh(true);
            }

            this._width = width;
            this._height = height;

        }
        return this;
    },

    /**
     * 清除单独的一个层
     * @param {number} zlevel
     */
    clearLayer: function (zlevel) {
        var layer = this._layers[zlevel];
        if (layer) {
            layer.clear();
        }
    },

    /**
     * 释放
     */
    dispose: function () {
        this.root.innerHTML = '';

        this.root =
        this.storage =

        this._domRoot =
        this._layers = null;
    },

    /**
     * Get canvas which has all thing rendered
     * @param {Object} opts
     * @param {string} [opts.backgroundColor]
     * @param {number} [opts.pixelRatio]
     */
    getRenderedCanvas: function (opts) {
        opts = opts || {};
        if (this._singleCanvas && !this._compositeManually) {
            return this._layers[CANVAS_ZLEVEL].dom;
        }

        var imageLayer = new Layer('image', this, opts.pixelRatio || this.dpr);
        imageLayer.initContext();
        imageLayer.clear(false, opts.backgroundColor || this._backgroundColor);

        if (opts.pixelRatio <= this.dpr) {
            this.refresh();

            var width = imageLayer.dom.width;
            var height = imageLayer.dom.height;
            var ctx = imageLayer.ctx;
            this.eachLayer(function (layer) {
                if (layer.__builtin__) {
                    ctx.drawImage(layer.dom, 0, 0, width, height);
                }
                else if (layer.renderToCanvas) {
                    imageLayer.ctx.save();
                    layer.renderToCanvas(imageLayer.ctx);
                    imageLayer.ctx.restore();
                }
            });
        }
        else {
            // PENDING, echarts-gl and incremental rendering.
            var scope = {};
            var displayList = this.storage.getDisplayList(true);
            for (var i = 0; i < displayList.length; i++) {
                var el = displayList[i];
                this._doPaintEl(el, imageLayer, true, scope);
            }
        }

        return imageLayer.dom;
    },
    /**
     * 获取绘图区域宽度
     */
    getWidth: function () {
        return this._width;
    },

    /**
     * 获取绘图区域高度
     */
    getHeight: function () {
        return this._height;
    },

    _getSize: function (whIdx) {
        var opts = this._opts;
        var wh = ['width', 'height'][whIdx];
        var cwh = ['clientWidth', 'clientHeight'][whIdx];
        var plt = ['paddingLeft', 'paddingTop'][whIdx];
        var prb = ['paddingRight', 'paddingBottom'][whIdx];

        if (opts[wh] != null && opts[wh] !== 'auto') {
            return parseFloat(opts[wh]);
        }

        var root = this.root;
        // IE8 does not support getComputedStyle, but it use VML.
        var stl = document.defaultView.getComputedStyle(root);

        return (
            (root[cwh] || parseInt10(stl[wh]) || parseInt10(root.style[wh]))
            - (parseInt10(stl[plt]) || 0)
            - (parseInt10(stl[prb]) || 0)
        ) | 0;
    },

    pathToImage: function (path, dpr) {
        dpr = dpr || this.dpr;

        var canvas = document.createElement('canvas');
        var ctx = canvas.getContext('2d');
        var rect = path.getBoundingRect();
        var style = path.style;
        var shadowBlurSize = style.shadowBlur * dpr;
        var shadowOffsetX = style.shadowOffsetX * dpr;
        var shadowOffsetY = style.shadowOffsetY * dpr;
        var lineWidth = style.hasStroke() ? style.lineWidth : 0;

        var leftMargin = Math.max(lineWidth / 2, -shadowOffsetX + shadowBlurSize);
        var rightMargin = Math.max(lineWidth / 2, shadowOffsetX + shadowBlurSize);
        var topMargin = Math.max(lineWidth / 2, -shadowOffsetY + shadowBlurSize);
        var bottomMargin = Math.max(lineWidth / 2, shadowOffsetY + shadowBlurSize);
        var width = rect.width + leftMargin + rightMargin;
        var height = rect.height + topMargin + bottomMargin;

        canvas.width = width * dpr;
        canvas.height = height * dpr;

        ctx.scale(dpr, dpr);
        ctx.clearRect(0, 0, width, height);
        ctx.dpr = dpr;

        var pathTransform = {
            position: path.position,
            rotation: path.rotation,
            scale: path.scale
        };
        path.position = [leftMargin - rect.x, topMargin - rect.y];
        path.rotation = 0;
        path.scale = [1, 1];
        path.updateTransform();
        if (path) {
            path.brush(ctx);
        }

        var ImageShape = ZImage;
        var imgShape = new ImageShape({
            style: {
                x: 0,
                y: 0,
                image: canvas
            }
        });

        if (pathTransform.position != null) {
            imgShape.position = path.position = pathTransform.position;
        }

        if (pathTransform.rotation != null) {
            imgShape.rotation = path.rotation = pathTransform.rotation;
        }

        if (pathTransform.scale != null) {
            imgShape.scale = path.scale = pathTransform.scale;
        }

        return imgShape;
    }
};

/**
 * 事件辅助类
 * @module zrender/core/event
 * @author Kener (@Kener-林峰, kener.linfeng@gmail.com)
 */

var isDomLevel2 = (typeof window !== 'undefined') && !!window.addEventListener;

var MOUSE_EVENT_REG = /^(?:mouse|pointer|contextmenu|drag|drop)|click/;

function getBoundingClientRect(el) {
    // BlackBerry 5, iOS 3 (original iPhone) don't have getBoundingRect
    return el.getBoundingClientRect ? el.getBoundingClientRect() : {left: 0, top: 0};
}

// `calculate` is optional, default false
function clientToLocal(el, e, out, calculate) {
    out = out || {};

    // According to the W3C Working Draft, offsetX and offsetY should be relative
    // to the padding edge of the target element. The only browser using this convention
    // is IE. Webkit uses the border edge, Opera uses the content edge, and FireFox does
    // not support the properties.
    // (see http://www.jacklmoore.com/notes/mouse-position/)
    // In zr painter.dom, padding edge equals to border edge.

    // FIXME
    // When mousemove event triggered on ec tooltip, target is not zr painter.dom, and
    // offsetX/Y is relative to e.target, where the calculation of zrX/Y via offsetX/Y
    // is too complex. So css-transfrom dont support in this case temporarily.
    if (calculate || !env$1.canvasSupported) {
        defaultGetZrXY(el, e, out);
    }
    // Caution: In FireFox, layerX/layerY Mouse position relative to the closest positioned
    // ancestor element, so we should make sure el is positioned (e.g., not position:static).
    // BTW1, Webkit don't return the same results as FF in non-simple cases (like add
    // zoom-factor, overflow / opacity layers, transforms ...)
    // BTW2, (ev.offsetY || ev.pageY - $(ev.target).offset().top) is not correct in preserve-3d.
    // <https://bugs.jquery.com/ticket/8523#comment:14>
    // BTW3, In ff, offsetX/offsetY is always 0.
    else if (env$1.browser.firefox && e.layerX != null && e.layerX !== e.offsetX) {
        out.zrX = e.layerX;
        out.zrY = e.layerY;
    }
    // For IE6+, chrome, safari, opera. (When will ff support offsetX?)
    else if (e.offsetX != null) {
        out.zrX = e.offsetX;
        out.zrY = e.offsetY;
    }
    // For some other device, e.g., IOS safari.
    else {
        defaultGetZrXY(el, e, out);
    }

    return out;
}

function defaultGetZrXY(el, e, out) {
    // This well-known method below does not support css transform.
    var box = getBoundingClientRect(el);
    out.zrX = e.clientX - box.left;
    out.zrY = e.clientY - box.top;
}

/**
 * 如果存在第三方嵌入的一些dom触发的事件，或touch事件，需要转换一下事件坐标.
 * `calculate` is optional, default false.
 */
function normalizeEvent(el, e, calculate) {

    e = e || window.event;

    if (e.zrX != null) {
        return e;
    }

    var eventType = e.type;
    var isTouch = eventType && eventType.indexOf('touch') >= 0;

    if (!isTouch) {
        clientToLocal(el, e, e, calculate);
        e.zrDelta = (e.wheelDelta) ? e.wheelDelta / 120 : -(e.detail || 0) / 3;
    }
    else {
        var touch = eventType != 'touchend'
            ? e.targetTouches[0]
            : e.changedTouches[0];
        touch && clientToLocal(el, touch, e, calculate);
    }

    // Add which for click: 1 === left; 2 === middle; 3 === right; otherwise: 0;
    // See jQuery: https://github.com/jquery/jquery/blob/master/src/event.js
    // If e.which has been defined, if may be readonly,
    // see: https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/which
    var button = e.button;
    if (e.which == null && button !== undefined && MOUSE_EVENT_REG.test(e.type)) {
        e.which = (button & 1 ? 1 : (button & 2 ? 3 : (button & 4 ? 2 : 0)));
    }

    return e;
}

/**
 * @param {HTMLElement} el
 * @param {string} name
 * @param {Function} handler
 */
function addEventListener(el, name, handler) {
    if (isDomLevel2) {
        // Reproduct the console warning:
        // [Violation] Added non-passive event listener to a scroll-blocking <some> event.
        // Consider marking event handler as 'passive' to make the page more responsive.
        // Just set console log level: verbose in chrome dev tool.
        // then the warning log will be printed when addEventListener called.
        // See https://github.com/WICG/EventListenerOptions/blob/gh-pages/explainer.md
        // We have not yet found a neat way to using passive. Because in zrender the dom event
        // listener delegate all of the upper events of element. Some of those events need
        // to prevent default. For example, the feature `preventDefaultMouseMove` of echarts.
        // Before passive can be adopted, these issues should be considered:
        // (1) Whether and how a zrender user specifies an event listener passive. And by default,
        // passive or not.
        // (2) How to tread that some zrender event listener is passive, and some is not. If
        // we use other way but not preventDefault of mousewheel and touchmove, browser
        // compatibility should be handled.

        // var opts = (env.passiveSupported && name === 'mousewheel')
        //     ? {passive: true}
        //     // By default, the third param of el.addEventListener is `capture: false`.
        //     : void 0;
        // el.addEventListener(name, handler /* , opts */);
        el.addEventListener(name, handler);
    }
    else {
        el.attachEvent('on' + name, handler);
    }
}

function removeEventListener(el, name, handler) {
    if (isDomLevel2) {
        el.removeEventListener(name, handler);
    }
    else {
        el.detachEvent('on' + name, handler);
    }
}

/**
 * preventDefault and stopPropagation.
 * Notice: do not do that in zrender. Upper application
 * do that if necessary.
 *
 * @memberOf module:zrender/core/event
 * @method
 * @param {Event} e : event对象
 */

/**
 * 动画主类, 调度和管理所有动画控制器
 *
 * @module zrender/animation/Animation
 * @author pissang(https://github.com/pissang)
 */
// TODO Additive animation
// http://iosoteric.com/additive-animations-animatewithduration-in-ios-8/
// https://developer.apple.com/videos/wwdc2014/#236

/**
 * @typedef {Object} IZRenderStage
 * @property {Function} update
 */

/**
 * @alias module:zrender/animation/Animation
 * @constructor
 * @param {Object} [options]
 * @param {Function} [options.onframe]
 * @param {IZRenderStage} [options.stage]
 * @example
 *     var animation = new Animation();
 *     var obj = {
 *         x: 100,
 *         y: 100
 *     };
 *     animation.animate(node.position)
 *         .when(1000, {
 *             x: 500,
 *             y: 500
 *         })
 *         .when(2000, {
 *             x: 100,
 *             y: 100
 *         })
 *         .start('spline');
 */
var Animation = function (options) {

    options = options || {};

    this.stage = options.stage || {};

    this.onframe = options.onframe || function() {};

    // private properties
    this._clips = [];

    this._running = false;

    this._time;

    this._pausedTime;

    this._pauseStart;

    this._paused = false;

    Eventful.call(this);
};

Animation.prototype = {

    constructor: Animation,
    /**
     * 添加 clip
     * @param {module:zrender/animation/Clip} clip
     */
    addClip: function (clip) {
        this._clips.push(clip);
    },
    /**
     * 添加 animator
     * @param {module:zrender/animation/Animator} animator
     */
    addAnimator: function (animator) {
        animator.animation = this;
        var clips = animator.getClips();
        for (var i = 0; i < clips.length; i++) {
            this.addClip(clips[i]);
        }
    },
    /**
     * 删除动画片段
     * @param {module:zrender/animation/Clip} clip
     */
    removeClip: function(clip) {
        var idx = indexOf(this._clips, clip);
        if (idx >= 0) {
            this._clips.splice(idx, 1);
        }
    },

    /**
     * 删除动画片段
     * @param {module:zrender/animation/Animator} animator
     */
    removeAnimator: function (animator) {
        var clips = animator.getClips();
        for (var i = 0; i < clips.length; i++) {
            this.removeClip(clips[i]);
        }
        animator.animation = null;
    },

    _update: function() {
        var time = new Date().getTime() - this._pausedTime;
        var delta = time - this._time;
        var clips = this._clips;
        var len = clips.length;

        var deferredEvents = [];
        var deferredClips = [];
        for (var i = 0; i < len; i++) {
            var clip = clips[i];
            var e = clip.step(time, delta);
            // Throw out the events need to be called after
            // stage.update, like destroy
            if (e) {
                deferredEvents.push(e);
                deferredClips.push(clip);
            }
        }

        // Remove the finished clip
        for (var i = 0; i < len;) {
            if (clips[i]._needsRemove) {
                clips[i] = clips[len - 1];
                clips.pop();
                len--;
            }
            else {
                i++;
            }
        }

        len = deferredEvents.length;
        for (var i = 0; i < len; i++) {
            deferredClips[i].fire(deferredEvents[i]);
        }

        this._time = time;

        this.onframe(delta);

        // 'frame' should be triggered before stage, because upper application
        // depends on the sequence (e.g., echarts-stream and finish
        // event judge)
        this.trigger('frame', delta);

        if (this.stage.update) {
            this.stage.update();
        }
    },

    _startLoop: function () {
        var self = this;

        this._running = true;

        function step() {
            if (self._running) {

                requestAnimationFrame(step);

                !self._paused && self._update();
            }
        }

        requestAnimationFrame(step);
    },

    /**
     * Start animation.
     */
    start: function () {

        this._time = new Date().getTime();
        this._pausedTime = 0;

        this._startLoop();
    },

    /**
     * Stop animation.
     */
    stop: function () {
        this._running = false;
    },

    /**
     * Pause animation.
     */
    pause: function () {
        if (!this._paused) {
            this._pauseStart = new Date().getTime();
            this._paused = true;
        }
    },

    /**
     * Resume animation.
     */
    resume: function () {
        if (this._paused) {
            this._pausedTime += (new Date().getTime()) - this._pauseStart;
            this._paused = false;
        }
    },

    /**
     * Clear animation.
     */
    clear: function () {
        this._clips = [];
    },

    /**
     * Whether animation finished.
     */
    isFinished: function () {
        return !this._clips.length;
    },

    /**
     * Creat animator for a target, whose props can be animated.
     *
     * @param  {Object} target
     * @param  {Object} options
     * @param  {boolean} [options.loop=false] Whether loop animation.
     * @param  {Function} [options.getter=null] Get value from target.
     * @param  {Function} [options.setter=null] Set value to target.
     * @return {module:zrender/animation/Animation~Animator}
     */
    // TODO Gap
    animate: function (target, options) {
        options = options || {};

        var animator = new Animator(
            target,
            options.loop,
            options.getter,
            options.setter
        );

        this.addAnimator(animator);

        return animator;
    }
};

mixin(Animation, Eventful);

/**
 * Only implements needed gestures for mobile.
 */

var GestureMgr = function () {

    /**
     * @private
     * @type {Array.<Object>}
     */
    this._track = [];
};

GestureMgr.prototype = {

    constructor: GestureMgr,

    recognize: function (event, target, root) {
        this._doTrack(event, target, root);
        return this._recognize(event);
    },

    clear: function () {
        this._track.length = 0;
        return this;
    },

    _doTrack: function (event, target, root) {
        var touches = event.touches;

        if (!touches) {
            return;
        }

        var trackItem = {
            points: [],
            touches: [],
            target: target,
            event: event
        };

        for (var i = 0, len = touches.length; i < len; i++) {
            var touch = touches[i];
            var pos = clientToLocal(root, touch, {});
            trackItem.points.push([pos.zrX, pos.zrY]);
            trackItem.touches.push(touch);
        }

        this._track.push(trackItem);
    },

    _recognize: function (event) {
        for (var eventName in recognizers) {
            if (recognizers.hasOwnProperty(eventName)) {
                var gestureInfo = recognizers[eventName](this._track, event);
                if (gestureInfo) {
                    return gestureInfo;
                }
            }
        }
    }
};

function dist$1(pointPair) {
    var dx = pointPair[1][0] - pointPair[0][0];
    var dy = pointPair[1][1] - pointPair[0][1];

    return Math.sqrt(dx * dx + dy * dy);
}

function center(pointPair) {
    return [
        (pointPair[0][0] + pointPair[1][0]) / 2,
        (pointPair[0][1] + pointPair[1][1]) / 2
    ];
}

var recognizers = {

    pinch: function (track, event) {
        var trackLen = track.length;

        if (!trackLen) {
            return;
        }

        var pinchEnd = (track[trackLen - 1] || {}).points;
        var pinchPre = (track[trackLen - 2] || {}).points || pinchEnd;

        if (pinchPre
            && pinchPre.length > 1
            && pinchEnd
            && pinchEnd.length > 1
        ) {
            var pinchScale = dist$1(pinchEnd) / dist$1(pinchPre);
            !isFinite(pinchScale) && (pinchScale = 1);

            event.pinchScale = pinchScale;

            var pinchCenter = center(pinchEnd);
            event.pinchX = pinchCenter[0];
            event.pinchY = pinchCenter[1];

            return {
                type: 'pinch',
                target: track[0].target,
                event: event
            };
        }
    }

    // Only pinch currently.
};

var TOUCH_CLICK_DELAY = 300;

var mouseHandlerNames = [
    'click', 'dblclick', 'mousewheel', 'mouseout',
    'mouseup', 'mousedown', 'mousemove', 'contextmenu'
];

var touchHandlerNames = [
    'touchstart', 'touchend', 'touchmove'
];

var pointerEventNames = {
    pointerdown: 1, pointerup: 1, pointermove: 1, pointerout: 1
};

var pointerHandlerNames = map(mouseHandlerNames, function (name) {
    var nm = name.replace('mouse', 'pointer');
    return pointerEventNames[nm] ? nm : name;
});

function eventNameFix(name) {
    return (name === 'mousewheel' && env$1.browser.firefox) ? 'DOMMouseScroll' : name;
}

function processGesture(proxy, event, stage) {
    var gestureMgr = proxy._gestureMgr;

    stage === 'start' && gestureMgr.clear();

    var gestureInfo = gestureMgr.recognize(
        event,
        proxy.handler.findHover(event.zrX, event.zrY, null).target,
        proxy.dom
    );

    stage === 'end' && gestureMgr.clear();

    // Do not do any preventDefault here. Upper application do that if necessary.
    if (gestureInfo) {
        var type = gestureInfo.type;
        event.gestureEvent = type;

        proxy.handler.dispatchToElement({target: gestureInfo.target}, type, gestureInfo.event);
    }
}

// function onMSGestureChange(proxy, event) {
//     if (event.translationX || event.translationY) {
//         // mousemove is carried by MSGesture to reduce the sensitivity.
//         proxy.handler.dispatchToElement(event.target, 'mousemove', event);
//     }
//     if (event.scale !== 1) {
//         event.pinchX = event.offsetX;
//         event.pinchY = event.offsetY;
//         event.pinchScale = event.scale;
//         proxy.handler.dispatchToElement(event.target, 'pinch', event);
//     }
// }

/**
 * Prevent mouse event from being dispatched after Touch Events action
 * @see <https://github.com/deltakosh/handjs/blob/master/src/hand.base.js>
 * 1. Mobile browsers dispatch mouse events 300ms after touchend.
 * 2. Chrome for Android dispatch mousedown for long-touch about 650ms
 * Result: Blocking Mouse Events for 700ms.
 */
function setTouchTimer(instance) {
    instance._touching = true;
    clearTimeout(instance._touchTimer);
    instance._touchTimer = setTimeout(function () {
        instance._touching = false;
    }, 700);
}


var domHandlers = {
    /**
     * Mouse move handler
     * @inner
     * @param {Event} event
     */
    mousemove: function (event) {
        event = normalizeEvent(this.dom, event);

        this.trigger('mousemove', event);
    },

    /**
     * Mouse out handler
     * @inner
     * @param {Event} event
     */
    mouseout: function (event) {
        event = normalizeEvent(this.dom, event);

        var element = event.toElement || event.relatedTarget;
        if (element != this.dom) {
            while (element && element.nodeType != 9) {
                // 忽略包含在root中的dom引起的mouseOut
                if (element === this.dom) {
                    return;
                }

                element = element.parentNode;
            }
        }

        this.trigger('mouseout', event);
    },

    /**
     * Touch开始响应函数
     * @inner
     * @param {Event} event
     */
    touchstart: function (event) {
        // Default mouse behaviour should not be disabled here.
        // For example, page may needs to be slided.
        event = normalizeEvent(this.dom, event);

        // Mark touch, which is useful in distinguish touch and
        // mouse event in upper applicatoin.
        event.zrByTouch = true;

        this._lastTouchMoment = new Date();

        processGesture(this, event, 'start');

        // In touch device, trigger `mousemove`(`mouseover`) should
        // be triggered, and must before `mousedown` triggered.
        domHandlers.mousemove.call(this, event);

        domHandlers.mousedown.call(this, event);

        setTouchTimer(this);
    },

    /**
     * Touch移动响应函数
     * @inner
     * @param {Event} event
     */
    touchmove: function (event) {

        event = normalizeEvent(this.dom, event);

        // Mark touch, which is useful in distinguish touch and
        // mouse event in upper applicatoin.
        event.zrByTouch = true;

        processGesture(this, event, 'change');

        // Mouse move should always be triggered no matter whether
        // there is gestrue event, because mouse move and pinch may
        // be used at the same time.
        domHandlers.mousemove.call(this, event);

        setTouchTimer(this);
    },

    /**
     * Touch结束响应函数
     * @inner
     * @param {Event} event
     */
    touchend: function (event) {

        event = normalizeEvent(this.dom, event);

        // Mark touch, which is useful in distinguish touch and
        // mouse event in upper applicatoin.
        event.zrByTouch = true;

        processGesture(this, event, 'end');

        domHandlers.mouseup.call(this, event);

        // Do not trigger `mouseout` here, in spite of `mousemove`(`mouseover`) is
        // triggered in `touchstart`. This seems to be illogical, but by this mechanism,
        // we can conveniently implement "hover style" in both PC and touch device just
        // by listening to `mouseover` to add "hover style" and listening to `mouseout`
        // to remove "hover style" on an element, without any additional code for
        // compatibility. (`mouseout` will not be triggered in `touchend`, so "hover
        // style" will remain for user view)

        // click event should always be triggered no matter whether
        // there is gestrue event. System click can not be prevented.
        if (+new Date() - this._lastTouchMoment < TOUCH_CLICK_DELAY) {
            domHandlers.click.call(this, event);
        }

        setTouchTimer(this);
    },

    pointerdown: function (event) {
        domHandlers.mousedown.call(this, event);

        // if (useMSGuesture(this, event)) {
        //     this._msGesture.addPointer(event.pointerId);
        // }
    },

    pointermove: function (event) {
        // FIXME
        // pointermove is so sensitive that it always triggered when
        // tap(click) on touch screen, which affect some judgement in
        // upper application. So, we dont support mousemove on MS touch
        // device yet.
        if (!isPointerFromTouch(event)) {
            domHandlers.mousemove.call(this, event);
        }
    },

    pointerup: function (event) {
        domHandlers.mouseup.call(this, event);
    },

    pointerout: function (event) {
        // pointerout will be triggered when tap on touch screen
        // (IE11+/Edge on MS Surface) after click event triggered,
        // which is inconsistent with the mousout behavior we defined
        // in touchend. So we unify them.
        // (check domHandlers.touchend for detailed explanation)
        if (!isPointerFromTouch(event)) {
            domHandlers.mouseout.call(this, event);
        }
    }
};

function isPointerFromTouch(event) {
    var pointerType = event.pointerType;
    return pointerType === 'pen' || pointerType === 'touch';
}

// function useMSGuesture(handlerProxy, event) {
//     return isPointerFromTouch(event) && !!handlerProxy._msGesture;
// }

// Common handlers
each$1(['click', 'mousedown', 'mouseup', 'mousewheel', 'dblclick', 'contextmenu'], function (name) {
    domHandlers[name] = function (event) {
        event = normalizeEvent(this.dom, event);
        this.trigger(name, event);
    };
});

/**
 * 为控制类实例初始化dom 事件处理函数
 *
 * @inner
 * @param {module:zrender/Handler} instance 控制类实例
 */
function initDomHandler(instance) {
    each$1(touchHandlerNames, function (name) {
        instance._handlers[name] = bind(domHandlers[name], instance);
    });

    each$1(pointerHandlerNames, function (name) {
        instance._handlers[name] = bind(domHandlers[name], instance);
    });

    each$1(mouseHandlerNames, function (name) {
        instance._handlers[name] = makeMouseHandler(domHandlers[name], instance);
    });

    function makeMouseHandler(fn, instance) {
        return function () {
            if (instance._touching) {
                return;
            }
            return fn.apply(instance, arguments);
        };
    }
}


function HandlerDomProxy(dom) {
    Eventful.call(this);

    this.dom = dom;

    /**
     * @private
     * @type {boolean}
     */
    this._touching = false;

    /**
     * @private
     * @type {number}
     */
    this._touchTimer;

    /**
     * @private
     * @type {module:zrender/core/GestureMgr}
     */
    this._gestureMgr = new GestureMgr();

    this._handlers = {};

    initDomHandler(this);

    if (env$1.pointerEventsSupported) { // Only IE11+/Edge
        // 1. On devices that both enable touch and mouse (e.g., MS Surface and lenovo X240),
        // IE11+/Edge do not trigger touch event, but trigger pointer event and mouse event
        // at the same time.
        // 2. On MS Surface, it probablely only trigger mousedown but no mouseup when tap on
        // screen, which do not occurs in pointer event.
        // So we use pointer event to both detect touch gesture and mouse behavior.
        mountHandlers(pointerHandlerNames, this);

        // FIXME
        // Note: MS Gesture require CSS touch-action set. But touch-action is not reliable,
        // which does not prevent defuault behavior occasionally (which may cause view port
        // zoomed in but use can not zoom it back). And event.preventDefault() does not work.
        // So we have to not to use MSGesture and not to support touchmove and pinch on MS
        // touch screen. And we only support click behavior on MS touch screen now.

        // MS Gesture Event is only supported on IE11+/Edge and on Windows 8+.
        // We dont support touch on IE on win7.
        // See <https://msdn.microsoft.com/en-us/library/dn433243(v=vs.85).aspx>
        // if (typeof MSGesture === 'function') {
        //     (this._msGesture = new MSGesture()).target = dom; // jshint ignore:line
        //     dom.addEventListener('MSGestureChange', onMSGestureChange);
        // }
    }
    else {
        if (env$1.touchEventsSupported) {
            mountHandlers(touchHandlerNames, this);
            // Handler of 'mouseout' event is needed in touch mode, which will be mounted below.
            // addEventListener(root, 'mouseout', this._mouseoutHandler);
        }

        // 1. Considering some devices that both enable touch and mouse event (like on MS Surface
        // and lenovo X240, @see #2350), we make mouse event be always listened, otherwise
        // mouse event can not be handle in those devices.
        // 2. On MS Surface, Chrome will trigger both touch event and mouse event. How to prevent
        // mouseevent after touch event triggered, see `setTouchTimer`.
        mountHandlers(mouseHandlerNames, this);
    }

    function mountHandlers(handlerNames, instance) {
        each$1(handlerNames, function (name) {
            addEventListener(dom, eventNameFix(name), instance._handlers[name]);
        }, instance);
    }
}

var handlerDomProxyProto = HandlerDomProxy.prototype;
handlerDomProxyProto.dispose = function () {
    var handlerNames = mouseHandlerNames.concat(touchHandlerNames);

    for (var i = 0; i < handlerNames.length; i++) {
        var name = handlerNames[i];
        removeEventListener(this.dom, eventNameFix(name), this._handlers[name]);
    }
};

handlerDomProxyProto.setCursor = function (cursorStyle) {
    this.dom.style && (this.dom.style.cursor = cursorStyle || 'default');
};

mixin(HandlerDomProxy, Eventful);

/*!
* ZRender, a high performance 2d drawing library.
*
* Copyright (c) 2013, Baidu Inc.
* All rights reserved.
*
* LICENSE
* https://github.com/ecomfe/zrender/blob/master/LICENSE.txt
*/

var useVML = !env$1.canvasSupported;

var painterCtors = {
    canvas: Painter
};

/**
 * @type {string}
 */
var version$1 = '4.0.3';

/**
 * Initializing a zrender instance
 * @param {HTMLElement} dom
 * @param {Object} opts
 * @param {string} [opts.renderer='canvas'] 'canvas' or 'svg'
 * @param {number} [opts.devicePixelRatio]
 * @param {number|string} [opts.width] Can be 'auto' (the same as null/undefined)
 * @param {number|string} [opts.height] Can be 'auto' (the same as null/undefined)
 * @return {module:zrender/ZRender}
 */
function init$1(dom, opts) {
    var zr = new ZRender(guid(), dom, opts);
    return zr;
}

/**
 * Dispose zrender instance
 * @param {module:zrender/ZRender} zr
 */


/**
 * Get zrender instance by id
 * @param {string} id zrender instance id
 * @return {module:zrender/ZRender}
 */




/**
 * @module zrender/ZRender
 */
/**
 * @constructor
 * @alias module:zrender/ZRender
 * @param {string} id
 * @param {HTMLElement} dom
 * @param {Object} opts
 * @param {string} [opts.renderer='canvas'] 'canvas' or 'svg'
 * @param {number} [opts.devicePixelRatio]
 * @param {number} [opts.width] Can be 'auto' (the same as null/undefined)
 * @param {number} [opts.height] Can be 'auto' (the same as null/undefined)
 */
var ZRender = function (id, dom, opts) {

    opts = opts || {};

    /**
     * @type {HTMLDomElement}
     */
    this.dom = dom;

    /**
     * @type {string}
     */
    this.id = id;

    var self = this;
    var storage = new Storage();

    var rendererType = opts.renderer;
    // TODO WebGL
    if (useVML) {
        if (!painterCtors.vml) {
            throw new Error('You need to require \'zrender/vml/vml\' to support IE8');
        }
        rendererType = 'vml';
    }
    else if (!rendererType || !painterCtors[rendererType]) {
        rendererType = 'canvas';
    }
    var painter = new painterCtors[rendererType](dom, storage, opts, id);

    this.storage = storage;
    this.painter = painter;

    var handerProxy = (!env$1.node && !env$1.worker) ? new HandlerDomProxy(painter.getViewportRoot()) : null;
    this.handler = new Handler(storage, painter, handerProxy, painter.root);

    /**
     * @type {module:zrender/animation/Animation}
     */
    this.animation = new Animation({
        stage: {
            update: bind(this.flush, this)
        }
    });
    this.animation.start();

    /**
     * @type {boolean}
     * @private
     */
    this._needsRefresh;

    // 修改 storage.delFromStorage, 每次删除元素之前删除动画
    // FIXME 有点ugly
    var oldDelFromStorage = storage.delFromStorage;
    var oldAddToStorage = storage.addToStorage;

    storage.delFromStorage = function (el) {
        oldDelFromStorage.call(storage, el);

        el && el.removeSelfFromZr(self);
    };

    storage.addToStorage = function (el) {
        oldAddToStorage.call(storage, el);

        el.addSelfToZr(self);
    };
};

ZRender.prototype = {

    constructor: ZRender,
    /**
     * 获取实例唯一标识
     * @return {string}
     */
    getId: function () {
        return this.id;
    },

    /**
     * 添加元素
     * @param  {module:zrender/Element} el
     */
    add: function (el) {
        this.storage.addRoot(el);
        this._needsRefresh = true;
    },

    /**
     * 删除元素
     * @param  {module:zrender/Element} el
     */
    remove: function (el) {
        this.storage.delRoot(el);
        this._needsRefresh = true;
    },

    /**
     * Change configuration of layer
     * @param {string} zLevel
     * @param {Object} config
     * @param {string} [config.clearColor=0] Clear color
     * @param {string} [config.motionBlur=false] If enable motion blur
     * @param {number} [config.lastFrameAlpha=0.7] Motion blur factor. Larger value cause longer trailer
    */
    configLayer: function (zLevel, config) {
        if (this.painter.configLayer) {
            this.painter.configLayer(zLevel, config);
        }
        this._needsRefresh = true;
    },

    /**
     * Set background color
     * @param {string} backgroundColor
     */
    setBackgroundColor: function (backgroundColor) {
        if (this.painter.setBackgroundColor) {
            this.painter.setBackgroundColor(backgroundColor);
        }
        this._needsRefresh = true;
    },

    /**
     * Repaint the canvas immediately
     */
    refreshImmediately: function () {
        // var start = new Date();
        // Clear needsRefresh ahead to avoid something wrong happens in refresh
        // Or it will cause zrender refreshes again and again.
        this._needsRefresh = false;
        this.painter.refresh();
        /**
         * Avoid trigger zr.refresh in Element#beforeUpdate hook
         */
        this._needsRefresh = false;
        // var end = new Date();

        // var log = document.getElementById('log');
        // if (log) {
        //     log.innerHTML = log.innerHTML + '<br>' + (end - start);
        // }
    },

    /**
     * Mark and repaint the canvas in the next frame of browser
     */
    refresh: function() {
        this._needsRefresh = true;
    },

    /**
     * Perform all refresh
     */
    flush: function () {
        var triggerRendered;

        if (this._needsRefresh) {
            triggerRendered = true;
            this.refreshImmediately();
        }
        if (this._needsRefreshHover) {
            triggerRendered = true;
            this.refreshHoverImmediately();
        }

        triggerRendered && this.trigger('rendered');
    },

    /**
     * Add element to hover layer
     * @param  {module:zrender/Element} el
     * @param {Object} style
     */
    addHover: function (el, style) {
        if (this.painter.addHover) {
            this.painter.addHover(el, style);
            this.refreshHover();
        }
    },

    /**
     * Add element from hover layer
     * @param  {module:zrender/Element} el
     */
    removeHover: function (el) {
        if (this.painter.removeHover) {
            this.painter.removeHover(el);
            this.refreshHover();
        }
    },

    /**
     * Clear all hover elements in hover layer
     * @param  {module:zrender/Element} el
     */
    clearHover: function () {
        if (this.painter.clearHover) {
            this.painter.clearHover();
            this.refreshHover();
        }
    },

    /**
     * Refresh hover in next frame
     */
    refreshHover: function () {
        this._needsRefreshHover = true;
    },

    /**
     * Refresh hover immediately
     */
    refreshHoverImmediately: function () {
        this._needsRefreshHover = false;
        this.painter.refreshHover && this.painter.refreshHover();
    },

    /**
     * Resize the canvas.
     * Should be invoked when container size is changed
     * @param {Object} [opts]
     * @param {number|string} [opts.width] Can be 'auto' (the same as null/undefined)
     * @param {number|string} [opts.height] Can be 'auto' (the same as null/undefined)
     */
    resize: function(opts) {
        opts = opts || {};
        this.painter.resize(opts.width, opts.height);
        this.handler.resize();
    },

    /**
     * Stop and clear all animation immediately
     */
    clearAnimation: function () {
        this.animation.clear();
    },

    /**
     * Get container width
     */
    getWidth: function() {
        return this.painter.getWidth();
    },

    /**
     * Get container height
     */
    getHeight: function() {
        return this.painter.getHeight();
    },

    /**
     * Export the canvas as Base64 URL
     * @param {string} type
     * @param {string} [backgroundColor='#fff']
     * @return {string} Base64 URL
     */
    // toDataURL: function(type, backgroundColor) {
    //     return this.painter.getRenderedCanvas({
    //         backgroundColor: backgroundColor
    //     }).toDataURL(type);
    // },

    /**
     * Converting a path to image.
     * It has much better performance of drawing image rather than drawing a vector path.
     * @param {module:zrender/graphic/Path} e
     * @param {number} width
     * @param {number} height
     */
    pathToImage: function(e, dpr) {
        return this.painter.pathToImage(e, dpr);
    },

    /**
     * Set default cursor
     * @param {string} [cursorStyle='default'] 例如 crosshair
     */
    setCursorStyle: function (cursorStyle) {
        this.handler.setCursorStyle(cursorStyle);
    },

    /**
     * Find hovered element
     * @param {number} x
     * @param {number} y
     * @return {Object} {target, topTarget}
     */
    findHover: function (x, y) {
        return this.handler.findHover(x, y);
    },

    /**
     * Bind event
     *
     * @param {string} eventName Event name
     * @param {Function} eventHandler Handler function
     * @param {Object} [context] Context object
     */
    on: function(eventName, eventHandler, context) {
        this.handler.on(eventName, eventHandler, context);
    },

    /**
     * Unbind event
     * @param {string} eventName Event name
     * @param {Function} [eventHandler] Handler function
     */
    off: function(eventName, eventHandler) {
        this.handler.off(eventName, eventHandler);
    },

    /**
     * Trigger event manually
     *
     * @param {string} eventName Event name
     * @param {event=} event Event object
     */
    trigger: function (eventName, event) {
        this.handler.trigger(eventName, event);
    },


    /**
     * Clear all objects and the canvas.
     */
    clear: function () {
        this.storage.delRoot();
        this.painter.clear();
    },

    /**
     * Dispose self.
     */
    dispose: function () {
        this.animation.stop();

        this.clear();
        this.storage.dispose();
        this.painter.dispose();
        this.handler.dispose();

        this.animation =
        this.storage =
        this.painter =
        this.handler = null;

        
    }
};

var each$2 = each$1;
var isObject$2 = isObject$1;
var isArray$1 = isArray;

/**
 * Make the name displayable. But we should
 * make sure it is not duplicated with user
 * specified name, so use '\0';
 */
var DUMMY_COMPONENT_NAME_PREFIX = 'series\0';

/**
 * If value is not array, then translate it to array.
 * @param  {*} value
 * @return {Array} [value] or value
 */
function normalizeToArray(value) {
    return value instanceof Array
        ? value
        : value == null
        ? []
        : [value];
}

/**
 * Sync default option between normal and emphasis like `position` and `show`
 * In case some one will write code like
 *     label: {
 *          show: false,
 *          position: 'outside',
 *          fontSize: 18
 *     },
 *     emphasis: {
 *          label: { show: true }
 *     }
 * @param {Object} opt
 * @param {string} key
 * @param {Array.<string>} subOpts
 */
function defaultEmphasis(opt, key, subOpts) {
    if (opt) {
        opt[key] = opt[key] || {};
        opt.emphasis = opt.emphasis || {};
        opt.emphasis[key] = opt.emphasis[key] || {};

        // Default emphasis option from normal
        for (var i = 0, len = subOpts.length; i < len; i++) {
            var subOptName = subOpts[i];
            if (!opt.emphasis[key].hasOwnProperty(subOptName)
                && opt[key].hasOwnProperty(subOptName)
            ) {
                opt.emphasis[key][subOptName] = opt[key][subOptName];
            }
        }
    }
}

var TEXT_STYLE_OPTIONS = [
    'fontStyle', 'fontWeight', 'fontSize', 'fontFamily',
    'rich', 'tag', 'color', 'textBorderColor', 'textBorderWidth',
    'width', 'height', 'lineHeight', 'align', 'verticalAlign', 'baseline',
    'shadowColor', 'shadowBlur', 'shadowOffsetX', 'shadowOffsetY',
    'textShadowColor', 'textShadowBlur', 'textShadowOffsetX', 'textShadowOffsetY',
    'backgroundColor', 'borderColor', 'borderWidth', 'borderRadius', 'padding'
];

// modelUtil.LABEL_OPTIONS = modelUtil.TEXT_STYLE_OPTIONS.concat([
//     'position', 'offset', 'rotate', 'origin', 'show', 'distance', 'formatter',
//     'fontStyle', 'fontWeight', 'fontSize', 'fontFamily',
//     // FIXME: deprecated, check and remove it.
//     'textStyle'
// ]);

/**
 * The method do not ensure performance.
 * data could be [12, 2323, {value: 223}, [1221, 23], {value: [2, 23]}]
 * This helper method retieves value from data.
 * @param {string|number|Date|Array|Object} dataItem
 * @return {number|string|Date|Array.<number|string|Date>}
 */
function getDataItemValue(dataItem) {
    return (isObject$2(dataItem) && !isArray$1(dataItem) && !(dataItem instanceof Date))
        ? dataItem.value : dataItem;
}

/**
 * data could be [12, 2323, {value: 223}, [1221, 23], {value: [2, 23]}]
 * This helper method determine if dataItem has extra option besides value
 * @param {string|number|Date|Array|Object} dataItem
 */
function isDataItemOption(dataItem) {
    return isObject$2(dataItem)
        && !(dataItem instanceof Array);
        // // markLine data can be array
        // && !(dataItem[0] && isObject(dataItem[0]) && !(dataItem[0] instanceof Array));
}

/**
 * Mapping to exists for merge.
 *
 * @public
 * @param {Array.<Object>|Array.<module:echarts/model/Component>} exists
 * @param {Object|Array.<Object>} newCptOptions
 * @return {Array.<Object>} Result, like [{exist: ..., option: ...}, {}],
 *                          index of which is the same as exists.
 */
function mappingToExists(exists, newCptOptions) {
    // Mapping by the order by original option (but not order of
    // new option) in merge mode. Because we should ensure
    // some specified index (like xAxisIndex) is consistent with
    // original option, which is easy to understand, espatially in
    // media query. And in most case, merge option is used to
    // update partial option but not be expected to change order.
    newCptOptions = (newCptOptions || []).slice();

    var result = map(exists || [], function (obj, index) {
        return {exist: obj};
    });

    // Mapping by id or name if specified.
    each$2(newCptOptions, function (cptOption, index) {
        if (!isObject$2(cptOption)) {
            return;
        }

        // id has highest priority.
        for (var i = 0; i < result.length; i++) {
            if (!result[i].option // Consider name: two map to one.
                && cptOption.id != null
                && result[i].exist.id === cptOption.id + ''
            ) {
                result[i].option = cptOption;
                newCptOptions[index] = null;
                return;
            }
        }

        for (var i = 0; i < result.length; i++) {
            var exist = result[i].exist;
            if (!result[i].option // Consider name: two map to one.
                // Can not match when both ids exist but different.
                && (exist.id == null || cptOption.id == null)
                && cptOption.name != null
                && !isIdInner(cptOption)
                && !isIdInner(exist)
                && exist.name === cptOption.name + ''
            ) {
                result[i].option = cptOption;
                newCptOptions[index] = null;
                return;
            }
        }
    });

    // Otherwise mapping by index.
    each$2(newCptOptions, function (cptOption, index) {
        if (!isObject$2(cptOption)) {
            return;
        }

        var i = 0;
        for (; i < result.length; i++) {
            var exist = result[i].exist;
            if (!result[i].option
                // Existing model that already has id should be able to
                // mapped to (because after mapping performed model may
                // be assigned with a id, whish should not affect next
                // mapping), except those has inner id.
                && !isIdInner(exist)
                // Caution:
                // Do not overwrite id. But name can be overwritten,
                // because axis use name as 'show label text'.
                // 'exist' always has id and name and we dont
                // need to check it.
                && cptOption.id == null
            ) {
                result[i].option = cptOption;
                break;
            }
        }

        if (i >= result.length) {
            result.push({option: cptOption});
        }
    });

    return result;
}

/**
 * Make id and name for mapping result (result of mappingToExists)
 * into `keyInfo` field.
 *
 * @public
 * @param {Array.<Object>} Result, like [{exist: ..., option: ...}, {}],
 *                          which order is the same as exists.
 * @return {Array.<Object>} The input.
 */
function makeIdAndName(mapResult) {
    // We use this id to hash component models and view instances
    // in echarts. id can be specified by user, or auto generated.

    // The id generation rule ensures new view instance are able
    // to mapped to old instance when setOption are called in
    // no-merge mode. So we generate model id by name and plus
    // type in view id.

    // name can be duplicated among components, which is convenient
    // to specify multi components (like series) by one name.

    // Ensure that each id is distinct.
    var idMap = createHashMap();

    each$2(mapResult, function (item, index) {
        var existCpt = item.exist;
        existCpt && idMap.set(existCpt.id, item);
    });

    each$2(mapResult, function (item, index) {
        var opt = item.option;

        assert$1(
            !opt || opt.id == null || !idMap.get(opt.id) || idMap.get(opt.id) === item,
            'id duplicates: ' + (opt && opt.id)
        );

        opt && opt.id != null && idMap.set(opt.id, item);
        !item.keyInfo && (item.keyInfo = {});
    });

    // Make name and id.
    each$2(mapResult, function (item, index) {
        var existCpt = item.exist;
        var opt = item.option;
        var keyInfo = item.keyInfo;

        if (!isObject$2(opt)) {
            return;
        }

        // name can be overwitten. Consider case: axis.name = '20km'.
        // But id generated by name will not be changed, which affect
        // only in that case: setOption with 'not merge mode' and view
        // instance will be recreated, which can be accepted.
        keyInfo.name = opt.name != null
            ? opt.name + ''
            : existCpt
            ? existCpt.name
            // Avoid diffferent series has the same name,
            // because name may be used like in color pallet.
            : DUMMY_COMPONENT_NAME_PREFIX + index;

        if (existCpt) {
            keyInfo.id = existCpt.id;
        }
        else if (opt.id != null) {
            keyInfo.id = opt.id + '';
        }
        else {
            // Consider this situatoin:
            //  optionA: [{name: 'a'}, {name: 'a'}, {..}]
            //  optionB [{..}, {name: 'a'}, {name: 'a'}]
            // Series with the same name between optionA and optionB
            // should be mapped.
            var idNum = 0;
            do {
                keyInfo.id = '\0' + keyInfo.name + '\0' + idNum++;
            }
            while (idMap.get(keyInfo.id));
        }

        idMap.set(keyInfo.id, item);
    });
}

function isNameSpecified(componentModel) {
    var name = componentModel.name;
    // Is specified when `indexOf` get -1 or > 0.
    return !!(name && name.indexOf(DUMMY_COMPONENT_NAME_PREFIX));
}

/**
 * @public
 * @param {Object} cptOption
 * @return {boolean}
 */
function isIdInner(cptOption) {
    return isObject$2(cptOption)
        && cptOption.id
        && (cptOption.id + '').indexOf('\0_ec_\0') === 0;
}

/**
 * A helper for removing duplicate items between batchA and batchB,
 * and in themselves, and categorize by series.
 *
 * @param {Array.<Object>} batchA Like: [{seriesId: 2, dataIndex: [32, 4, 5]}, ...]
 * @param {Array.<Object>} batchB Like: [{seriesId: 2, dataIndex: [32, 4, 5]}, ...]
 * @return {Array.<Array.<Object>, Array.<Object>>} result: [resultBatchA, resultBatchB]
 */


/**
 * @param {module:echarts/data/List} data
 * @param {Object} payload Contains dataIndex (means rawIndex) / dataIndexInside / name
 *                         each of which can be Array or primary type.
 * @return {number|Array.<number>} dataIndex If not found, return undefined/null.
 */
function queryDataIndex(data, payload) {
    if (payload.dataIndexInside != null) {
        return payload.dataIndexInside;
    }
    else if (payload.dataIndex != null) {
        return isArray(payload.dataIndex)
            ? map(payload.dataIndex, function (value) {
                return data.indexOfRawIndex(value);
            })
            : data.indexOfRawIndex(payload.dataIndex);
    }
    else if (payload.name != null) {
        return isArray(payload.name)
            ? map(payload.name, function (value) {
                return data.indexOfName(value);
            })
            : data.indexOfName(payload.name);
    }
}

/**
 * Enable property storage to any host object.
 * Notice: Serialization is not supported.
 *
 * For example:
 * var inner = zrUitl.makeInner();
 *
 * function some1(hostObj) {
 *      inner(hostObj).someProperty = 1212;
 *      ...
 * }
 * function some2() {
 *      var fields = inner(this);
 *      fields.someProperty1 = 1212;
 *      fields.someProperty2 = 'xx';
 *      ...
 * }
 *
 * @return {Function}
 */
function makeInner() {
    // Consider different scope by es module import.
    var key = '__\0ec_inner_' + innerUniqueIndex++ + '_' + Math.random().toFixed(5);
    return function (hostObj) {
        return hostObj[key] || (hostObj[key] = {});
    };
}
var innerUniqueIndex = 0;

/**
 * @param {module:echarts/model/Global} ecModel
 * @param {string|Object} finder
 *        If string, e.g., 'geo', means {geoIndex: 0}.
 *        If Object, could contain some of these properties below:
 *        {
 *            seriesIndex, seriesId, seriesName,
 *            geoIndex, geoId, geoName,
 *            bmapIndex, bmapId, bmapName,
 *            xAxisIndex, xAxisId, xAxisName,
 *            yAxisIndex, yAxisId, yAxisName,
 *            gridIndex, gridId, gridName,
 *            ... (can be extended)
 *        }
 *        Each properties can be number|string|Array.<number>|Array.<string>
 *        For example, a finder could be
 *        {
 *            seriesIndex: 3,
 *            geoId: ['aa', 'cc'],
 *            gridName: ['xx', 'rr']
 *        }
 *        xxxIndex can be set as 'all' (means all xxx) or 'none' (means not specify)
 *        If nothing or null/undefined specified, return nothing.
 * @param {Object} [opt]
 * @param {string} [opt.defaultMainType]
 * @param {Array.<string>} [opt.includeMainTypes]
 * @return {Object} result like:
 *        {
 *            seriesModels: [seriesModel1, seriesModel2],
 *            seriesModel: seriesModel1, // The first model
 *            geoModels: [geoModel1, geoModel2],
 *            geoModel: geoModel1, // The first model
 *            ...
 *        }
 */
function parseFinder(ecModel, finder, opt) {
    if (isString(finder)) {
        var obj = {};
        obj[finder + 'Index'] = 0;
        finder = obj;
    }

    var defaultMainType = opt && opt.defaultMainType;
    if (defaultMainType
        && !has(finder, defaultMainType + 'Index')
        && !has(finder, defaultMainType + 'Id')
        && !has(finder, defaultMainType + 'Name')
    ) {
        finder[defaultMainType + 'Index'] = 0;
    }

    var result = {};

    each$2(finder, function (value, key) {
        var value = finder[key];

        // Exclude 'dataIndex' and other illgal keys.
        if (key === 'dataIndex' || key === 'dataIndexInside') {
            result[key] = value;
            return;
        }

        var parsedKey = key.match(/^(\w+)(Index|Id|Name)$/) || [];
        var mainType = parsedKey[1];
        var queryType = (parsedKey[2] || '').toLowerCase();

        if (!mainType
            || !queryType
            || value == null
            || (queryType === 'index' && value === 'none')
            || (opt && opt.includeMainTypes && indexOf(opt.includeMainTypes, mainType) < 0)
        ) {
            return;
        }

        var queryParam = {mainType: mainType};
        if (queryType !== 'index' || value !== 'all') {
            queryParam[queryType] = value;
        }

        var models = ecModel.queryComponents(queryParam);
        result[mainType + 'Models'] = models;
        result[mainType + 'Model'] = models[0];
    });

    return result;
}

function has(obj, prop) {
    return obj && obj.hasOwnProperty(prop);
}

function setAttribute(dom, key, value) {
    dom.setAttribute
        ? dom.setAttribute(key, value)
        : (dom[key] = value);
}

function getAttribute(dom, key) {
    return dom.getAttribute
        ? dom.getAttribute(key)
        : dom[key];
}

var TYPE_DELIMITER = '.';
var IS_CONTAINER = '___EC__COMPONENT__CONTAINER___';

/**
 * Notice, parseClassType('') should returns {main: '', sub: ''}
 * @public
 */
function parseClassType$1(componentType) {
    var ret = {main: '', sub: ''};
    if (componentType) {
        componentType = componentType.split(TYPE_DELIMITER);
        ret.main = componentType[0] || '';
        ret.sub = componentType[1] || '';
    }
    return ret;
}

/**
 * @public
 */
function checkClassType(componentType) {
    assert$1(
        /^[a-zA-Z0-9_]+([.][a-zA-Z0-9_]+)?$/.test(componentType),
        'componentType "' + componentType + '" illegal'
    );
}

/**
 * @public
 */
function enableClassExtend(RootClass, mandatoryMethods) {

    RootClass.$constructor = RootClass;
    RootClass.extend = function (proto) {

        if (__DEV__) {
            each$1(mandatoryMethods, function (method) {
                if (!proto[method]) {
                    console.warn(
                        'Method `' + method + '` should be implemented'
                        + (proto.type ? ' in ' + proto.type : '') + '.'
                    );
                }
            });
        }

        var superClass = this;
        var ExtendedClass = function () {
            if (!proto.$constructor) {
                superClass.apply(this, arguments);
            }
            else {
                proto.$constructor.apply(this, arguments);
            }
        };

        extend(ExtendedClass.prototype, proto);

        ExtendedClass.extend = this.extend;
        ExtendedClass.superCall = superCall;
        ExtendedClass.superApply = superApply;
        inherits(ExtendedClass, this);
        ExtendedClass.superClass = superClass;

        return ExtendedClass;
    };
}

var classBase = 0;

/**
 * Can not use instanceof, consider different scope by
 * cross domain or es module import in ec extensions.
 * Mount a method "isInstance()" to Clz.
 */
function enableClassCheck(Clz) {
    var classAttr = ['__\0is_clz', classBase++, Math.random().toFixed(3)].join('_');
    Clz.prototype[classAttr] = true;

    if (__DEV__) {
        assert$1(!Clz.isInstance, 'The method "is" can not be defined.');
    }

    Clz.isInstance = function (obj) {
        return !!(obj && obj[classAttr]);
    };
}

// superCall should have class info, which can not be fetch from 'this'.
// Consider this case:
// class A has method f,
// class B inherits class A, overrides method f, f call superApply('f'),
// class C inherits class B, do not overrides method f,
// then when method of class C is called, dead loop occured.
function superCall(context, methodName) {
    var args = slice(arguments, 2);
    return this.superClass.prototype[methodName].apply(context, args);
}

function superApply(context, methodName, args) {
    return this.superClass.prototype[methodName].apply(context, args);
}

/**
 * @param {Object} entity
 * @param {Object} options
 * @param {boolean} [options.registerWhenExtend]
 * @public
 */
function enableClassManagement(entity, options) {
    options = options || {};

    /**
     * Component model classes
     * key: componentType,
     * value:
     *     componentClass, when componentType is 'xxx'
     *     or Object.<subKey, componentClass>, when componentType is 'xxx.yy'
     * @type {Object}
     */
    var storage = {};

    entity.registerClass = function (Clazz, componentType) {
        if (componentType) {
            checkClassType(componentType);
            componentType = parseClassType$1(componentType);

            if (!componentType.sub) {
                if (__DEV__) {
                    if (storage[componentType.main]) {
                        console.warn(componentType.main + ' exists.');
                    }
                }
                storage[componentType.main] = Clazz;
            }
            else if (componentType.sub !== IS_CONTAINER) {
                var container = makeContainer(componentType);
                container[componentType.sub] = Clazz;
            }
        }
        return Clazz;
    };

    entity.getClass = function (componentMainType, subType, throwWhenNotFound) {
        var Clazz = storage[componentMainType];

        if (Clazz && Clazz[IS_CONTAINER]) {
            Clazz = subType ? Clazz[subType] : null;
        }

        if (throwWhenNotFound && !Clazz) {
            throw new Error(
                !subType
                    ? componentMainType + '.' + 'type should be specified.'
                    : 'Component ' + componentMainType + '.' + (subType || '') + ' not exists. Load it first.'
            );
        }

        return Clazz;
    };

    entity.getClassesByMainType = function (componentType) {
        componentType = parseClassType$1(componentType);

        var result = [];
        var obj = storage[componentType.main];

        if (obj && obj[IS_CONTAINER]) {
            each$1(obj, function (o, type) {
                type !== IS_CONTAINER && result.push(o);
            });
        }
        else {
            result.push(obj);
        }

        return result;
    };

    entity.hasClass = function (componentType) {
        // Just consider componentType.main.
        componentType = parseClassType$1(componentType);
        return !!storage[componentType.main];
    };

    /**
     * @return {Array.<string>} Like ['aa', 'bb'], but can not be ['aa.xx']
     */
    entity.getAllClassMainTypes = function () {
        var types = [];
        each$1(storage, function (obj, type) {
            types.push(type);
        });
        return types;
    };

    /**
     * If a main type is container and has sub types
     * @param  {string}  mainType
     * @return {boolean}
     */
    entity.hasSubTypes = function (componentType) {
        componentType = parseClassType$1(componentType);
        var obj = storage[componentType.main];
        return obj && obj[IS_CONTAINER];
    };

    entity.parseClassType = parseClassType$1;

    function makeContainer(componentType) {
        var container = storage[componentType.main];
        if (!container || !container[IS_CONTAINER]) {
            container = storage[componentType.main] = {};
            container[IS_CONTAINER] = true;
        }
        return container;
    }

    if (options.registerWhenExtend) {
        var originalExtend = entity.extend;
        if (originalExtend) {
            entity.extend = function (proto) {
                var ExtendedClass = originalExtend.call(this, proto);
                return entity.registerClass(ExtendedClass, proto.type);
            };
        }
    }

    return entity;
}

/**
 * @param {string|Array.<string>} properties
 */

// TODO Parse shadow style
// TODO Only shallow path support
var makeStyleMapper = function (properties) {
    // Normalize
    for (var i = 0; i < properties.length; i++) {
        if (!properties[i][1]) {
            properties[i][1] = properties[i][0];
        }
    }
    return function (model, excludes, includes) {
        var style = {};
        for (var i = 0; i < properties.length; i++) {
            var propName = properties[i][1];
            if ((excludes && indexOf(excludes, propName) >= 0)
                || (includes && indexOf(includes, propName) < 0)
            ) {
                continue;
            }
            var val = model.getShallow(propName);
            if (val != null) {
                style[properties[i][0]] = val;
            }
        }
        return style;
    };
};

var getLineStyle = makeStyleMapper(
    [
        ['lineWidth', 'width'],
        ['stroke', 'color'],
        ['opacity'],
        ['shadowBlur'],
        ['shadowOffsetX'],
        ['shadowOffsetY'],
        ['shadowColor']
    ]
);

var lineStyleMixin = {
    getLineStyle: function (excludes) {
        var style = getLineStyle(this, excludes);
        var lineDash = this.getLineDash(style.lineWidth);
        lineDash && (style.lineDash = lineDash);
        return style;
    },

    getLineDash: function (lineWidth) {
        if (lineWidth == null) {
            lineWidth = 1;
        }
        var lineType = this.get('type');
        var dotSize = Math.max(lineWidth, 2);
        var dashSize = lineWidth * 4;
        return (lineType === 'solid' || lineType == null) ? null
            : (lineType === 'dashed' ? [dashSize, dashSize] : [dotSize, dotSize]);
    }
};

var getAreaStyle = makeStyleMapper(
    [
        ['fill', 'color'],
        ['shadowBlur'],
        ['shadowOffsetX'],
        ['shadowOffsetY'],
        ['opacity'],
        ['shadowColor']
    ]
);

var areaStyleMixin = {
    getAreaStyle: function (excludes, includes) {
        return getAreaStyle(this, excludes, includes);
    }
};

/**
 * 曲线辅助模块
 * @module zrender/core/curve
 * @author pissang(https://www.github.com/pissang)
 */

var mathPow = Math.pow;
var mathSqrt$2 = Math.sqrt;

var EPSILON$1 = 1e-8;
var EPSILON_NUMERIC = 1e-4;

var THREE_SQRT = mathSqrt$2(3);
var ONE_THIRD = 1 / 3;

// 临时变量
var _v0 = create();
var _v1 = create();
var _v2 = create();

function isAroundZero(val) {
    return val > -EPSILON$1 && val < EPSILON$1;
}
function isNotAroundZero$1(val) {
    return val > EPSILON$1 || val < -EPSILON$1;
}
/**
 * 计算三次贝塞尔值
 * @memberOf module:zrender/core/curve
 * @param  {number} p0
 * @param  {number} p1
 * @param  {number} p2
 * @param  {number} p3
 * @param  {number} t
 * @return {number}
 */
function cubicAt(p0, p1, p2, p3, t) {
    var onet = 1 - t;
    return onet * onet * (onet * p0 + 3 * t * p1)
            + t * t * (t * p3 + 3 * onet * p2);
}

/**
 * 计算三次贝塞尔导数值
 * @memberOf module:zrender/core/curve
 * @param  {number} p0
 * @param  {number} p1
 * @param  {number} p2
 * @param  {number} p3
 * @param  {number} t
 * @return {number}
 */
function cubicDerivativeAt(p0, p1, p2, p3, t) {
    var onet = 1 - t;
    return 3 * (
        ((p1 - p0) * onet + 2 * (p2 - p1) * t) * onet
        + (p3 - p2) * t * t
    );
}

/**
 * 计算三次贝塞尔方程根，使用盛金公式
 * @memberOf module:zrender/core/curve
 * @param  {number} p0
 * @param  {number} p1
 * @param  {number} p2
 * @param  {number} p3
 * @param  {number} val
 * @param  {Array.<number>} roots
 * @return {number} 有效根数目
 */
function cubicRootAt(p0, p1, p2, p3, val, roots) {
    // Evaluate roots of cubic functions
    var a = p3 + 3 * (p1 - p2) - p0;
    var b = 3 * (p2 - p1 * 2 + p0);
    var c = 3 * (p1  - p0);
    var d = p0 - val;

    var A = b * b - 3 * a * c;
    var B = b * c - 9 * a * d;
    var C = c * c - 3 * b * d;

    var n = 0;

    if (isAroundZero(A) && isAroundZero(B)) {
        if (isAroundZero(b)) {
            roots[0] = 0;
        }
        else {
            var t1 = -c / b;  //t1, t2, t3, b is not zero
            if (t1 >= 0 && t1 <= 1) {
                roots[n++] = t1;
            }
        }
    }
    else {
        var disc = B * B - 4 * A * C;

        if (isAroundZero(disc)) {
            var K = B / A;
            var t1 = -b / a + K;  // t1, a is not zero
            var t2 = -K / 2;  // t2, t3
            if (t1 >= 0 && t1 <= 1) {
                roots[n++] = t1;
            }
            if (t2 >= 0 && t2 <= 1) {
                roots[n++] = t2;
            }
        }
        else if (disc > 0) {
            var discSqrt = mathSqrt$2(disc);
            var Y1 = A * b + 1.5 * a * (-B + discSqrt);
            var Y2 = A * b + 1.5 * a * (-B - discSqrt);
            if (Y1 < 0) {
                Y1 = -mathPow(-Y1, ONE_THIRD);
            }
            else {
                Y1 = mathPow(Y1, ONE_THIRD);
            }
            if (Y2 < 0) {
                Y2 = -mathPow(-Y2, ONE_THIRD);
            }
            else {
                Y2 = mathPow(Y2, ONE_THIRD);
            }
            var t1 = (-b - (Y1 + Y2)) / (3 * a);
            if (t1 >= 0 && t1 <= 1) {
                roots[n++] = t1;
            }
        }
        else {
            var T = (2 * A * b - 3 * a * B) / (2 * mathSqrt$2(A * A * A));
            var theta = Math.acos(T) / 3;
            var ASqrt = mathSqrt$2(A);
            var tmp = Math.cos(theta);

            var t1 = (-b - 2 * ASqrt * tmp) / (3 * a);
            var t2 = (-b + ASqrt * (tmp + THREE_SQRT * Math.sin(theta))) / (3 * a);
            var t3 = (-b + ASqrt * (tmp - THREE_SQRT * Math.sin(theta))) / (3 * a);
            if (t1 >= 0 && t1 <= 1) {
                roots[n++] = t1;
            }
            if (t2 >= 0 && t2 <= 1) {
                roots[n++] = t2;
            }
            if (t3 >= 0 && t3 <= 1) {
                roots[n++] = t3;
            }
        }
    }
    return n;
}

/**
 * 计算三次贝塞尔方程极限值的位置
 * @memberOf module:zrender/core/curve
 * @param  {number} p0
 * @param  {number} p1
 * @param  {number} p2
 * @param  {number} p3
 * @param  {Array.<number>} extrema
 * @return {number} 有效数目
 */
function cubicExtrema(p0, p1, p2, p3, extrema) {
    var b = 6 * p2 - 12 * p1 + 6 * p0;
    var a = 9 * p1 + 3 * p3 - 3 * p0 - 9 * p2;
    var c = 3 * p1 - 3 * p0;

    var n = 0;
    if (isAroundZero(a)) {
        if (isNotAroundZero$1(b)) {
            var t1 = -c / b;
            if (t1 >= 0 && t1 <=1) {
                extrema[n++] = t1;
            }
        }
    }
    else {
        var disc = b * b - 4 * a * c;
        if (isAroundZero(disc)) {
            extrema[0] = -b / (2 * a);
        }
        else if (disc > 0) {
            var discSqrt = mathSqrt$2(disc);
            var t1 = (-b + discSqrt) / (2 * a);
            var t2 = (-b - discSqrt) / (2 * a);
            if (t1 >= 0 && t1 <= 1) {
                extrema[n++] = t1;
            }
            if (t2 >= 0 && t2 <= 1) {
                extrema[n++] = t2;
            }
        }
    }
    return n;
}

/**
 * 细分三次贝塞尔曲线
 * @memberOf module:zrender/core/curve
 * @param  {number} p0
 * @param  {number} p1
 * @param  {number} p2
 * @param  {number} p3
 * @param  {number} t
 * @param  {Array.<number>} out
 */
function cubicSubdivide(p0, p1, p2, p3, t, out) {
    var p01 = (p1 - p0) * t + p0;
    var p12 = (p2 - p1) * t + p1;
    var p23 = (p3 - p2) * t + p2;

    var p012 = (p12 - p01) * t + p01;
    var p123 = (p23 - p12) * t + p12;

    var p0123 = (p123 - p012) * t + p012;
    // Seg0
    out[0] = p0;
    out[1] = p01;
    out[2] = p012;
    out[3] = p0123;
    // Seg1
    out[4] = p0123;
    out[5] = p123;
    out[6] = p23;
    out[7] = p3;
}

/**
 * 投射点到三次贝塞尔曲线上，返回投射距离。
 * 投射点有可能会有一个或者多个，这里只返回其中距离最短的一个。
 * @param {number} x0
 * @param {number} y0
 * @param {number} x1
 * @param {number} y1
 * @param {number} x2
 * @param {number} y2
 * @param {number} x3
 * @param {number} y3
 * @param {number} x
 * @param {number} y
 * @param {Array.<number>} [out] 投射点
 * @return {number}
 */
function cubicProjectPoint(
    x0, y0, x1, y1, x2, y2, x3, y3,
    x, y, out
) {
    // http://pomax.github.io/bezierinfo/#projections
    var t;
    var interval = 0.005;
    var d = Infinity;
    var prev;
    var next;
    var d1;
    var d2;

    _v0[0] = x;
    _v0[1] = y;

    // 先粗略估计一下可能的最小距离的 t 值
    // PENDING
    for (var _t = 0; _t < 1; _t += 0.05) {
        _v1[0] = cubicAt(x0, x1, x2, x3, _t);
        _v1[1] = cubicAt(y0, y1, y2, y3, _t);
        d1 = distSquare(_v0, _v1);
        if (d1 < d) {
            t = _t;
            d = d1;
        }
    }
    d = Infinity;

    // At most 32 iteration
    for (var i = 0; i < 32; i++) {
        if (interval < EPSILON_NUMERIC) {
            break;
        }
        prev = t - interval;
        next = t + interval;
        // t - interval
        _v1[0] = cubicAt(x0, x1, x2, x3, prev);
        _v1[1] = cubicAt(y0, y1, y2, y3, prev);

        d1 = distSquare(_v1, _v0);

        if (prev >= 0 && d1 < d) {
            t = prev;
            d = d1;
        }
        else {
            // t + interval
            _v2[0] = cubicAt(x0, x1, x2, x3, next);
            _v2[1] = cubicAt(y0, y1, y2, y3, next);
            d2 = distSquare(_v2, _v0);

            if (next <= 1 && d2 < d) {
                t = next;
                d = d2;
            }
            else {
                interval *= 0.5;
            }
        }
    }
    // t
    if (out) {
        out[0] = cubicAt(x0, x1, x2, x3, t);
        out[1] = cubicAt(y0, y1, y2, y3, t);
    }
    // console.log(interval, i);
    return mathSqrt$2(d);
}

/**
 * 计算二次方贝塞尔值
 * @param  {number} p0
 * @param  {number} p1
 * @param  {number} p2
 * @param  {number} t
 * @return {number}
 */
function quadraticAt(p0, p1, p2, t) {
    var onet = 1 - t;
    return onet * (onet * p0 + 2 * t * p1) + t * t * p2;
}

/**
 * 计算二次方贝塞尔导数值
 * @param  {number} p0
 * @param  {number} p1
 * @param  {number} p2
 * @param  {number} t
 * @return {number}
 */
function quadraticDerivativeAt(p0, p1, p2, t) {
    return 2 * ((1 - t) * (p1 - p0) + t * (p2 - p1));
}

/**
 * 计算二次方贝塞尔方程根
 * @param  {number} p0
 * @param  {number} p1
 * @param  {number} p2
 * @param  {number} t
 * @param  {Array.<number>} roots
 * @return {number} 有效根数目
 */
function quadraticRootAt(p0, p1, p2, val, roots) {
    var a = p0 - 2 * p1 + p2;
    var b = 2 * (p1 - p0);
    var c = p0 - val;

    var n = 0;
    if (isAroundZero(a)) {
        if (isNotAroundZero$1(b)) {
            var t1 = -c / b;
            if (t1 >= 0 && t1 <= 1) {
                roots[n++] = t1;
            }
        }
    }
    else {
        var disc = b * b - 4 * a * c;
        if (isAroundZero(disc)) {
            var t1 = -b / (2 * a);
            if (t1 >= 0 && t1 <= 1) {
                roots[n++] = t1;
            }
        }
        else if (disc > 0) {
            var discSqrt = mathSqrt$2(disc);
            var t1 = (-b + discSqrt) / (2 * a);
            var t2 = (-b - discSqrt) / (2 * a);
            if (t1 >= 0 && t1 <= 1) {
                roots[n++] = t1;
            }
            if (t2 >= 0 && t2 <= 1) {
                roots[n++] = t2;
            }
        }
    }
    return n;
}

/**
 * 计算二次贝塞尔方程极限值
 * @memberOf module:zrender/core/curve
 * @param  {number} p0
 * @param  {number} p1
 * @param  {number} p2
 * @return {number}
 */
function quadraticExtremum(p0, p1, p2) {
    var divider = p0 + p2 - 2 * p1;
    if (divider === 0) {
        // p1 is center of p0 and p2
        return 0.5;
    }
    else {
        return (p0 - p1) / divider;
    }
}

/**
 * 细分二次贝塞尔曲线
 * @memberOf module:zrender/core/curve
 * @param  {number} p0
 * @param  {number} p1
 * @param  {number} p2
 * @param  {number} t
 * @param  {Array.<number>} out
 */
function quadraticSubdivide(p0, p1, p2, t, out) {
    var p01 = (p1 - p0) * t + p0;
    var p12 = (p2 - p1) * t + p1;
    var p012 = (p12 - p01) * t + p01;

    // Seg0
    out[0] = p0;
    out[1] = p01;
    out[2] = p012;

    // Seg1
    out[3] = p012;
    out[4] = p12;
    out[5] = p2;
}

/**
 * 投射点到二次贝塞尔曲线上，返回投射距离。
 * 投射点有可能会有一个或者多个，这里只返回其中距离最短的一个。
 * @param {number} x0
 * @param {number} y0
 * @param {number} x1
 * @param {number} y1
 * @param {number} x2
 * @param {number} y2
 * @param {number} x
 * @param {number} y
 * @param {Array.<number>} out 投射点
 * @return {number}
 */
function quadraticProjectPoint(
    x0, y0, x1, y1, x2, y2,
    x, y, out
) {
    // http://pomax.github.io/bezierinfo/#projections
    var t;
    var interval = 0.005;
    var d = Infinity;

    _v0[0] = x;
    _v0[1] = y;

    // 先粗略估计一下可能的最小距离的 t 值
    // PENDING
    for (var _t = 0; _t < 1; _t += 0.05) {
        _v1[0] = quadraticAt(x0, x1, x2, _t);
        _v1[1] = quadraticAt(y0, y1, y2, _t);
        var d1 = distSquare(_v0, _v1);
        if (d1 < d) {
            t = _t;
            d = d1;
        }
    }
    d = Infinity;

    // At most 32 iteration
    for (var i = 0; i < 32; i++) {
        if (interval < EPSILON_NUMERIC) {
            break;
        }
        var prev = t - interval;
        var next = t + interval;
        // t - interval
        _v1[0] = quadraticAt(x0, x1, x2, prev);
        _v1[1] = quadraticAt(y0, y1, y2, prev);

        var d1 = distSquare(_v1, _v0);

        if (prev >= 0 && d1 < d) {
            t = prev;
            d = d1;
        }
        else {
            // t + interval
            _v2[0] = quadraticAt(x0, x1, x2, next);
            _v2[1] = quadraticAt(y0, y1, y2, next);
            var d2 = distSquare(_v2, _v0);
            if (next <= 1 && d2 < d) {
                t = next;
                d = d2;
            }
            else {
                interval *= 0.5;
            }
        }
    }
    // t
    if (out) {
        out[0] = quadraticAt(x0, x1, x2, t);
        out[1] = quadraticAt(y0, y1, y2, t);
    }
    // console.log(interval, i);
    return mathSqrt$2(d);
}

/**
 * @author Yi Shen(https://github.com/pissang)
 */

var mathMin$3 = Math.min;
var mathMax$3 = Math.max;
var mathSin$2 = Math.sin;
var mathCos$2 = Math.cos;
var PI2 = Math.PI * 2;

var start = create();
var end = create();
var extremity = create();

/**
 * 从顶点数组中计算出最小包围盒，写入`min`和`max`中
 * @module zrender/core/bbox
 * @param {Array<Object>} points 顶点数组
 * @param {number} min
 * @param {number} max
 */


/**
 * @memberOf module:zrender/core/bbox
 * @param {number} x0
 * @param {number} y0
 * @param {number} x1
 * @param {number} y1
 * @param {Array.<number>} min
 * @param {Array.<number>} max
 */
function fromLine(x0, y0, x1, y1, min$$1, max$$1) {
    min$$1[0] = mathMin$3(x0, x1);
    min$$1[1] = mathMin$3(y0, y1);
    max$$1[0] = mathMax$3(x0, x1);
    max$$1[1] = mathMax$3(y0, y1);
}

var xDim = [];
var yDim = [];
/**
 * 从三阶贝塞尔曲线(p0, p1, p2, p3)中计算出最小包围盒，写入`min`和`max`中
 * @memberOf module:zrender/core/bbox
 * @param {number} x0
 * @param {number} y0
 * @param {number} x1
 * @param {number} y1
 * @param {number} x2
 * @param {number} y2
 * @param {number} x3
 * @param {number} y3
 * @param {Array.<number>} min
 * @param {Array.<number>} max
 */
function fromCubic(
    x0, y0, x1, y1, x2, y2, x3, y3, min$$1, max$$1
) {
    var cubicExtrema$$1 = cubicExtrema;
    var cubicAt$$1 = cubicAt;
    var i;
    var n = cubicExtrema$$1(x0, x1, x2, x3, xDim);
    min$$1[0] = Infinity;
    min$$1[1] = Infinity;
    max$$1[0] = -Infinity;
    max$$1[1] = -Infinity;

    for (i = 0; i < n; i++) {
        var x = cubicAt$$1(x0, x1, x2, x3, xDim[i]);
        min$$1[0] = mathMin$3(x, min$$1[0]);
        max$$1[0] = mathMax$3(x, max$$1[0]);
    }
    n = cubicExtrema$$1(y0, y1, y2, y3, yDim);
    for (i = 0; i < n; i++) {
        var y = cubicAt$$1(y0, y1, y2, y3, yDim[i]);
        min$$1[1] = mathMin$3(y, min$$1[1]);
        max$$1[1] = mathMax$3(y, max$$1[1]);
    }

    min$$1[0] = mathMin$3(x0, min$$1[0]);
    max$$1[0] = mathMax$3(x0, max$$1[0]);
    min$$1[0] = mathMin$3(x3, min$$1[0]);
    max$$1[0] = mathMax$3(x3, max$$1[0]);

    min$$1[1] = mathMin$3(y0, min$$1[1]);
    max$$1[1] = mathMax$3(y0, max$$1[1]);
    min$$1[1] = mathMin$3(y3, min$$1[1]);
    max$$1[1] = mathMax$3(y3, max$$1[1]);
}

/**
 * 从二阶贝塞尔曲线(p0, p1, p2)中计算出最小包围盒，写入`min`和`max`中
 * @memberOf module:zrender/core/bbox
 * @param {number} x0
 * @param {number} y0
 * @param {number} x1
 * @param {number} y1
 * @param {number} x2
 * @param {number} y2
 * @param {Array.<number>} min
 * @param {Array.<number>} max
 */
function fromQuadratic(x0, y0, x1, y1, x2, y2, min$$1, max$$1) {
    var quadraticExtremum$$1 = quadraticExtremum;
    var quadraticAt$$1 = quadraticAt;
    // Find extremities, where derivative in x dim or y dim is zero
    var tx =
        mathMax$3(
            mathMin$3(quadraticExtremum$$1(x0, x1, x2), 1), 0
        );
    var ty =
        mathMax$3(
            mathMin$3(quadraticExtremum$$1(y0, y1, y2), 1), 0
        );

    var x = quadraticAt$$1(x0, x1, x2, tx);
    var y = quadraticAt$$1(y0, y1, y2, ty);

    min$$1[0] = mathMin$3(x0, x2, x);
    min$$1[1] = mathMin$3(y0, y2, y);
    max$$1[0] = mathMax$3(x0, x2, x);
    max$$1[1] = mathMax$3(y0, y2, y);
}

/**
 * 从圆弧中计算出最小包围盒，写入`min`和`max`中
 * @method
 * @memberOf module:zrender/core/bbox
 * @param {number} x
 * @param {number} y
 * @param {number} rx
 * @param {number} ry
 * @param {number} startAngle
 * @param {number} endAngle
 * @param {number} anticlockwise
 * @param {Array.<number>} min
 * @param {Array.<number>} max
 */
function fromArc(
    x, y, rx, ry, startAngle, endAngle, anticlockwise, min$$1, max$$1
) {
    var vec2Min = min;
    var vec2Max = max;

    var diff = Math.abs(startAngle - endAngle);


    if (diff % PI2 < 1e-4 && diff > 1e-4) {
        // Is a circle
        min$$1[0] = x - rx;
        min$$1[1] = y - ry;
        max$$1[0] = x + rx;
        max$$1[1] = y + ry;
        return;
    }

    start[0] = mathCos$2(startAngle) * rx + x;
    start[1] = mathSin$2(startAngle) * ry + y;

    end[0] = mathCos$2(endAngle) * rx + x;
    end[1] = mathSin$2(endAngle) * ry + y;

    vec2Min(min$$1, start, end);
    vec2Max(max$$1, start, end);

    // Thresh to [0, Math.PI * 2]
    startAngle = startAngle % (PI2);
    if (startAngle < 0) {
        startAngle = startAngle + PI2;
    }
    endAngle = endAngle % (PI2);
    if (endAngle < 0) {
        endAngle = endAngle + PI2;
    }

    if (startAngle > endAngle && !anticlockwise) {
        endAngle += PI2;
    }
    else if (startAngle < endAngle && anticlockwise) {
        startAngle += PI2;
    }
    if (anticlockwise) {
        var tmp = endAngle;
        endAngle = startAngle;
        startAngle = tmp;
    }

    // var number = 0;
    // var step = (anticlockwise ? -Math.PI : Math.PI) / 2;
    for (var angle = 0; angle < endAngle; angle += Math.PI / 2) {
        if (angle > startAngle) {
            extremity[0] = mathCos$2(angle) * rx + x;
            extremity[1] = mathSin$2(angle) * ry + y;

            vec2Min(min$$1, extremity, min$$1);
            vec2Max(max$$1, extremity, max$$1);
        }
    }
}

/**
 * Path 代理，可以在`buildPath`中用于替代`ctx`, 会保存每个path操作的命令到pathCommands属性中
 * 可以用于 isInsidePath 判断以及获取boundingRect
 *
 * @module zrender/core/PathProxy
 * @author Yi Shen (http://www.github.com/pissang)
 */

// TODO getTotalLength, getPointAtLength

var CMD = {
    M: 1,
    L: 2,
    C: 3,
    Q: 4,
    A: 5,
    Z: 6,
    // Rect
    R: 7
};

// var CMD_MEM_SIZE = {
//     M: 3,
//     L: 3,
//     C: 7,
//     Q: 5,
//     A: 9,
//     R: 5,
//     Z: 1
// };

var min$1 = [];
var max$1 = [];
var min2 = [];
var max2 = [];
var mathMin$2 = Math.min;
var mathMax$2 = Math.max;
var mathCos$1 = Math.cos;
var mathSin$1 = Math.sin;
var mathSqrt$1 = Math.sqrt;
var mathAbs = Math.abs;

var hasTypedArray = typeof Float32Array != 'undefined';

/**
 * @alias module:zrender/core/PathProxy
 * @constructor
 */
var PathProxy = function (notSaveData) {

    this._saveData = !(notSaveData || false);

    if (this._saveData) {
        /**
         * Path data. Stored as flat array
         * @type {Array.<Object>}
         */
        this.data = [];
    }

    this._ctx = null;
};

/**
 * 快速计算Path包围盒（并不是最小包围盒）
 * @return {Object}
 */
PathProxy.prototype = {

    constructor: PathProxy,

    _xi: 0,
    _yi: 0,

    _x0: 0,
    _y0: 0,
    // Unit x, Unit y. Provide for avoiding drawing that too short line segment
    _ux: 0,
    _uy: 0,

    _len: 0,

    _lineDash: null,

    _dashOffset: 0,

    _dashIdx: 0,

    _dashSum: 0,

    /**
     * @readOnly
     */
    setScale: function (sx, sy) {
        this._ux = mathAbs(1 / devicePixelRatio / sx) || 0;
        this._uy = mathAbs(1 / devicePixelRatio / sy) || 0;
    },

    getContext: function () {
        return this._ctx;
    },

    /**
     * @param  {CanvasRenderingContext2D} ctx
     * @return {module:zrender/core/PathProxy}
     */
    beginPath: function (ctx) {

        this._ctx = ctx;

        ctx && ctx.beginPath();

        ctx && (this.dpr = ctx.dpr);

        // Reset
        if (this._saveData) {
            this._len = 0;
        }

        if (this._lineDash) {
            this._lineDash = null;

            this._dashOffset = 0;
        }

        return this;
    },

    /**
     * @param  {number} x
     * @param  {number} y
     * @return {module:zrender/core/PathProxy}
     */
    moveTo: function (x, y) {
        this.addData(CMD.M, x, y);
        this._ctx && this._ctx.moveTo(x, y);

        // x0, y0, xi, yi 是记录在 _dashedXXXXTo 方法中使用
        // xi, yi 记录当前点, x0, y0 在 closePath 的时候回到起始点。
        // 有可能在 beginPath 之后直接调用 lineTo，这时候 x0, y0 需要
        // 在 lineTo 方法中记录，这里先不考虑这种情况，dashed line 也只在 IE10- 中不支持
        this._x0 = x;
        this._y0 = y;

        this._xi = x;
        this._yi = y;

        return this;
    },

    /**
     * @param  {number} x
     * @param  {number} y
     * @return {module:zrender/core/PathProxy}
     */
    lineTo: function (x, y) {
        var exceedUnit = mathAbs(x - this._xi) > this._ux
            || mathAbs(y - this._yi) > this._uy
            // Force draw the first segment
            || this._len < 5;

        this.addData(CMD.L, x, y);

        if (this._ctx && exceedUnit) {
            this._needsDash() ? this._dashedLineTo(x, y)
                : this._ctx.lineTo(x, y);
        }
        if (exceedUnit) {
            this._xi = x;
            this._yi = y;
        }

        return this;
    },

    /**
     * @param  {number} x1
     * @param  {number} y1
     * @param  {number} x2
     * @param  {number} y2
     * @param  {number} x3
     * @param  {number} y3
     * @return {module:zrender/core/PathProxy}
     */
    bezierCurveTo: function (x1, y1, x2, y2, x3, y3) {
        this.addData(CMD.C, x1, y1, x2, y2, x3, y3);
        if (this._ctx) {
            this._needsDash() ? this._dashedBezierTo(x1, y1, x2, y2, x3, y3)
                : this._ctx.bezierCurveTo(x1, y1, x2, y2, x3, y3);
        }
        this._xi = x3;
        this._yi = y3;
        return this;
    },

    /**
     * @param  {number} x1
     * @param  {number} y1
     * @param  {number} x2
     * @param  {number} y2
     * @return {module:zrender/core/PathProxy}
     */
    quadraticCurveTo: function (x1, y1, x2, y2) {
        this.addData(CMD.Q, x1, y1, x2, y2);
        if (this._ctx) {
            this._needsDash() ? this._dashedQuadraticTo(x1, y1, x2, y2)
                : this._ctx.quadraticCurveTo(x1, y1, x2, y2);
        }
        this._xi = x2;
        this._yi = y2;
        return this;
    },

    /**
     * @param  {number} cx
     * @param  {number} cy
     * @param  {number} r
     * @param  {number} startAngle
     * @param  {number} endAngle
     * @param  {boolean} anticlockwise
     * @return {module:zrender/core/PathProxy}
     */
    arc: function (cx, cy, r, startAngle, endAngle, anticlockwise) {
        this.addData(
            CMD.A, cx, cy, r, r, startAngle, endAngle - startAngle, 0, anticlockwise ? 0 : 1
        );
        this._ctx && this._ctx.arc(cx, cy, r, startAngle, endAngle, anticlockwise);

        this._xi = mathCos$1(endAngle) * r + cx;
        this._yi = mathSin$1(endAngle) * r + cx;
        return this;
    },

    // TODO
    arcTo: function (x1, y1, x2, y2, radius) {
        if (this._ctx) {
            this._ctx.arcTo(x1, y1, x2, y2, radius);
        }
        return this;
    },

    // TODO
    rect: function (x, y, w, h) {
        this._ctx && this._ctx.rect(x, y, w, h);
        this.addData(CMD.R, x, y, w, h);
        return this;
    },

    /**
     * @return {module:zrender/core/PathProxy}
     */
    closePath: function () {
        this.addData(CMD.Z);

        var ctx = this._ctx;
        var x0 = this._x0;
        var y0 = this._y0;
        if (ctx) {
            this._needsDash() && this._dashedLineTo(x0, y0);
            ctx.closePath();
        }

        this._xi = x0;
        this._yi = y0;
        return this;
    },

    /**
     * Context 从外部传入，因为有可能是 rebuildPath 完之后再 fill。
     * stroke 同样
     * @param {CanvasRenderingContext2D} ctx
     * @return {module:zrender/core/PathProxy}
     */
    fill: function (ctx) {
        ctx && ctx.fill();
        this.toStatic();
    },

    /**
     * @param {CanvasRenderingContext2D} ctx
     * @return {module:zrender/core/PathProxy}
     */
    stroke: function (ctx) {
        ctx && ctx.stroke();
        this.toStatic();
    },

    /**
     * 必须在其它绘制命令前调用
     * Must be invoked before all other path drawing methods
     * @return {module:zrender/core/PathProxy}
     */
    setLineDash: function (lineDash) {
        if (lineDash instanceof Array) {
            this._lineDash = lineDash;

            this._dashIdx = 0;

            var lineDashSum = 0;
            for (var i = 0; i < lineDash.length; i++) {
                lineDashSum += lineDash[i];
            }
            this._dashSum = lineDashSum;
        }
        return this;
    },

    /**
     * 必须在其它绘制命令前调用
     * Must be invoked before all other path drawing methods
     * @return {module:zrender/core/PathProxy}
     */
    setLineDashOffset: function (offset) {
        this._dashOffset = offset;
        return this;
    },

    /**
     *
     * @return {boolean}
     */
    len: function () {
        return this._len;
    },

    /**
     * 直接设置 Path 数据
     */
    setData: function (data) {

        var len$$1 = data.length;

        if (! (this.data && this.data.length == len$$1) && hasTypedArray) {
            this.data = new Float32Array(len$$1);
        }

        for (var i = 0; i < len$$1; i++) {
            this.data[i] = data[i];
        }

        this._len = len$$1;
    },

    /**
     * 添加子路径
     * @param {module:zrender/core/PathProxy|Array.<module:zrender/core/PathProxy>} path
     */
    appendPath: function (path) {
        if (!(path instanceof Array)) {
            path = [path];
        }
        var len$$1 = path.length;
        var appendSize = 0;
        var offset = this._len;
        for (var i = 0; i < len$$1; i++) {
            appendSize += path[i].len();
        }
        if (hasTypedArray && (this.data instanceof Float32Array)) {
            this.data = new Float32Array(offset + appendSize);
        }
        for (var i = 0; i < len$$1; i++) {
            var appendPathData = path[i].data;
            for (var k = 0; k < appendPathData.length; k++) {
                this.data[offset++] = appendPathData[k];
            }
        }
        this._len = offset;
    },

    /**
     * 填充 Path 数据。
     * 尽量复用而不申明新的数组。大部分图形重绘的指令数据长度都是不变的。
     */
    addData: function (cmd) {
        if (!this._saveData) {
            return;
        }

        var data = this.data;
        if (this._len + arguments.length > data.length) {
            // 因为之前的数组已经转换成静态的 Float32Array
            // 所以不够用时需要扩展一个新的动态数组
            this._expandData();
            data = this.data;
        }
        for (var i = 0; i < arguments.length; i++) {
            data[this._len++] = arguments[i];
        }

        this._prevCmd = cmd;
    },

    _expandData: function () {
        // Only if data is Float32Array
        if (!(this.data instanceof Array)) {
            var newData = [];
            for (var i = 0; i < this._len; i++) {
                newData[i] = this.data[i];
            }
            this.data = newData;
        }
    },

    /**
     * If needs js implemented dashed line
     * @return {boolean}
     * @private
     */
    _needsDash: function () {
        return this._lineDash;
    },

    _dashedLineTo: function (x1, y1) {
        var dashSum = this._dashSum;
        var offset = this._dashOffset;
        var lineDash = this._lineDash;
        var ctx = this._ctx;

        var x0 = this._xi;
        var y0 = this._yi;
        var dx = x1 - x0;
        var dy = y1 - y0;
        var dist$$1 = mathSqrt$1(dx * dx + dy * dy);
        var x = x0;
        var y = y0;
        var dash;
        var nDash = lineDash.length;
        var idx;
        dx /= dist$$1;
        dy /= dist$$1;

        if (offset < 0) {
            // Convert to positive offset
            offset = dashSum + offset;
        }
        offset %= dashSum;
        x -= offset * dx;
        y -= offset * dy;

        while ((dx > 0 && x <= x1) || (dx < 0 && x >= x1)
        || (dx == 0 && ((dy > 0 && y <= y1) || (dy < 0 && y >= y1)))) {
            idx = this._dashIdx;
            dash = lineDash[idx];
            x += dx * dash;
            y += dy * dash;
            this._dashIdx = (idx + 1) % nDash;
            // Skip positive offset
            if ((dx > 0 && x < x0) || (dx < 0 && x > x0) || (dy > 0 && y < y0) || (dy < 0 && y > y0)) {
                continue;
            }
            ctx[idx % 2 ? 'moveTo' : 'lineTo'](
                dx >= 0 ? mathMin$2(x, x1) : mathMax$2(x, x1),
                dy >= 0 ? mathMin$2(y, y1) : mathMax$2(y, y1)
            );
        }
        // Offset for next lineTo
        dx = x - x1;
        dy = y - y1;
        this._dashOffset = -mathSqrt$1(dx * dx + dy * dy);
    },

    // Not accurate dashed line to
    _dashedBezierTo: function (x1, y1, x2, y2, x3, y3) {
        var dashSum = this._dashSum;
        var offset = this._dashOffset;
        var lineDash = this._lineDash;
        var ctx = this._ctx;

        var x0 = this._xi;
        var y0 = this._yi;
        var t;
        var dx;
        var dy;
        var cubicAt$$1 = cubicAt;
        var bezierLen = 0;
        var idx = this._dashIdx;
        var nDash = lineDash.length;

        var x;
        var y;

        var tmpLen = 0;

        if (offset < 0) {
            // Convert to positive offset
            offset = dashSum + offset;
        }
        offset %= dashSum;
        // Bezier approx length
        for (t = 0; t < 1; t += 0.1) {
            dx = cubicAt$$1(x0, x1, x2, x3, t + 0.1)
                - cubicAt$$1(x0, x1, x2, x3, t);
            dy = cubicAt$$1(y0, y1, y2, y3, t + 0.1)
                - cubicAt$$1(y0, y1, y2, y3, t);
            bezierLen += mathSqrt$1(dx * dx + dy * dy);
        }

        // Find idx after add offset
        for (; idx < nDash; idx++) {
            tmpLen += lineDash[idx];
            if (tmpLen > offset) {
                break;
            }
        }
        t = (tmpLen - offset) / bezierLen;

        while (t <= 1) {

            x = cubicAt$$1(x0, x1, x2, x3, t);
            y = cubicAt$$1(y0, y1, y2, y3, t);

            // Use line to approximate dashed bezier
            // Bad result if dash is long
            idx % 2 ? ctx.moveTo(x, y)
                : ctx.lineTo(x, y);

            t += lineDash[idx] / bezierLen;

            idx = (idx + 1) % nDash;
        }

        // Finish the last segment and calculate the new offset
        (idx % 2 !== 0) && ctx.lineTo(x3, y3);
        dx = x3 - x;
        dy = y3 - y;
        this._dashOffset = -mathSqrt$1(dx * dx + dy * dy);
    },

    _dashedQuadraticTo: function (x1, y1, x2, y2) {
        // Convert quadratic to cubic using degree elevation
        var x3 = x2;
        var y3 = y2;
        x2 = (x2 + 2 * x1) / 3;
        y2 = (y2 + 2 * y1) / 3;
        x1 = (this._xi + 2 * x1) / 3;
        y1 = (this._yi + 2 * y1) / 3;

        this._dashedBezierTo(x1, y1, x2, y2, x3, y3);
    },

    /**
     * 转成静态的 Float32Array 减少堆内存占用
     * Convert dynamic array to static Float32Array
     */
    toStatic: function () {
        var data = this.data;
        if (data instanceof Array) {
            data.length = this._len;
            if (hasTypedArray) {
                this.data = new Float32Array(data);
            }
        }
    },

    /**
     * @return {module:zrender/core/BoundingRect}
     */
    getBoundingRect: function () {
        min$1[0] = min$1[1] = min2[0] = min2[1] = Number.MAX_VALUE;
        max$1[0] = max$1[1] = max2[0] = max2[1] = -Number.MAX_VALUE;

        var data = this.data;
        var xi = 0;
        var yi = 0;
        var x0 = 0;
        var y0 = 0;

        for (var i = 0; i < data.length;) {
            var cmd = data[i++];

            if (i == 1) {
                // 如果第一个命令是 L, C, Q
                // 则 previous point 同绘制命令的第一个 point
                //
                // 第一个命令为 Arc 的情况下会在后面特殊处理
                xi = data[i];
                yi = data[i + 1];

                x0 = xi;
                y0 = yi;
            }

            switch (cmd) {
                case CMD.M:
                    // moveTo 命令重新创建一个新的 subpath, 并且更新新的起点
                    // 在 closePath 的时候使用
                    x0 = data[i++];
                    y0 = data[i++];
                    xi = x0;
                    yi = y0;
                    min2[0] = x0;
                    min2[1] = y0;
                    max2[0] = x0;
                    max2[1] = y0;
                    break;
                case CMD.L:
                    fromLine(xi, yi, data[i], data[i + 1], min2, max2);
                    xi = data[i++];
                    yi = data[i++];
                    break;
                case CMD.C:
                    fromCubic(
                        xi, yi, data[i++], data[i++], data[i++], data[i++], data[i], data[i + 1],
                        min2, max2
                    );
                    xi = data[i++];
                    yi = data[i++];
                    break;
                case CMD.Q:
                    fromQuadratic(
                        xi, yi, data[i++], data[i++], data[i], data[i + 1],
                        min2, max2
                    );
                    xi = data[i++];
                    yi = data[i++];
                    break;
                case CMD.A:
                    // TODO Arc 判断的开销比较大
                    var cx = data[i++];
                    var cy = data[i++];
                    var rx = data[i++];
                    var ry = data[i++];
                    var startAngle = data[i++];
                    var endAngle = data[i++] + startAngle;
                    // TODO Arc 旋转
                    var psi = data[i++];
                    var anticlockwise = 1 - data[i++];

                    if (i == 1) {
                        // 直接使用 arc 命令
                        // 第一个命令起点还未定义
                        x0 = mathCos$1(startAngle) * rx + cx;
                        y0 = mathSin$1(startAngle) * ry + cy;
                    }

                    fromArc(
                        cx, cy, rx, ry, startAngle, endAngle,
                        anticlockwise, min2, max2
                    );

                    xi = mathCos$1(endAngle) * rx + cx;
                    yi = mathSin$1(endAngle) * ry + cy;
                    break;
                case CMD.R:
                    x0 = xi = data[i++];
                    y0 = yi = data[i++];
                    var width = data[i++];
                    var height = data[i++];
                    // Use fromLine
                    fromLine(x0, y0, x0 + width, y0 + height, min2, max2);
                    break;
                case CMD.Z:
                    xi = x0;
                    yi = y0;
                    break;
            }

            // Union
            min(min$1, min$1, min2);
            max(max$1, max$1, max2);
        }

        // No data
        if (i === 0) {
            min$1[0] = min$1[1] = max$1[0] = max$1[1] = 0;
        }

        return new BoundingRect(
            min$1[0], min$1[1], max$1[0] - min$1[0], max$1[1] - min$1[1]
        );
    },

    /**
     * Rebuild path from current data
     * Rebuild path will not consider javascript implemented line dash.
     * @param {CanvasRenderingContext2D} ctx
     */
    rebuildPath: function (ctx) {
        var d = this.data;
        var x0, y0;
        var xi, yi;
        var x, y;
        var ux = this._ux;
        var uy = this._uy;
        var len$$1 = this._len;
        for (var i = 0; i < len$$1;) {
            var cmd = d[i++];

            if (i == 1) {
                // 如果第一个命令是 L, C, Q
                // 则 previous point 同绘制命令的第一个 point
                //
                // 第一个命令为 Arc 的情况下会在后面特殊处理
                xi = d[i];
                yi = d[i + 1];

                x0 = xi;
                y0 = yi;
            }
            switch (cmd) {
                case CMD.M:
                    x0 = xi = d[i++];
                    y0 = yi = d[i++];
                    ctx.moveTo(xi, yi);
                    break;
                case CMD.L:
                    x = d[i++];
                    y = d[i++];
                    // Not draw too small seg between
                    if (mathAbs(x - xi) > ux || mathAbs(y - yi) > uy || i === len$$1 - 1) {
                        ctx.lineTo(x, y);
                        xi = x;
                        yi = y;
                    }
                    break;
                case CMD.C:
                    ctx.bezierCurveTo(
                        d[i++], d[i++], d[i++], d[i++], d[i++], d[i++]
                    );
                    xi = d[i - 2];
                    yi = d[i - 1];
                    break;
                case CMD.Q:
                    ctx.quadraticCurveTo(d[i++], d[i++], d[i++], d[i++]);
                    xi = d[i - 2];
                    yi = d[i - 1];
                    break;
                case CMD.A:
                    var cx = d[i++];
                    var cy = d[i++];
                    var rx = d[i++];
                    var ry = d[i++];
                    var theta = d[i++];
                    var dTheta = d[i++];
                    var psi = d[i++];
                    var fs = d[i++];
                    var r = (rx > ry) ? rx : ry;
                    var scaleX = (rx > ry) ? 1 : rx / ry;
                    var scaleY = (rx > ry) ? ry / rx : 1;
                    var isEllipse = Math.abs(rx - ry) > 1e-3;
                    var endAngle = theta + dTheta;
                    if (isEllipse) {
                        ctx.translate(cx, cy);
                        ctx.rotate(psi);
                        ctx.scale(scaleX, scaleY);
                        ctx.arc(0, 0, r, theta, endAngle, 1 - fs);
                        ctx.scale(1 / scaleX, 1 / scaleY);
                        ctx.rotate(-psi);
                        ctx.translate(-cx, -cy);
                    }
                    else {
                        ctx.arc(cx, cy, r, theta, endAngle, 1 - fs);
                    }

                    if (i == 1) {
                        // 直接使用 arc 命令
                        // 第一个命令起点还未定义
                        x0 = mathCos$1(theta) * rx + cx;
                        y0 = mathSin$1(theta) * ry + cy;
                    }
                    xi = mathCos$1(endAngle) * rx + cx;
                    yi = mathSin$1(endAngle) * ry + cy;
                    break;
                case CMD.R:
                    x0 = xi = d[i];
                    y0 = yi = d[i + 1];
                    ctx.rect(d[i++], d[i++], d[i++], d[i++]);
                    break;
                case CMD.Z:
                    ctx.closePath();
                    xi = x0;
                    yi = y0;
            }
        }
    }
};

PathProxy.CMD = CMD;

/**
 * 线段包含判断
 * @param  {number}  x0
 * @param  {number}  y0
 * @param  {number}  x1
 * @param  {number}  y1
 * @param  {number}  lineWidth
 * @param  {number}  x
 * @param  {number}  y
 * @return {boolean}
 */
function containStroke$1(x0, y0, x1, y1, lineWidth, x, y) {
    if (lineWidth === 0) {
        return false;
    }
    var _l = lineWidth;
    var _a = 0;
    var _b = x0;
    // Quick reject
    if (
        (y > y0 + _l && y > y1 + _l)
        || (y < y0 - _l && y < y1 - _l)
        || (x > x0 + _l && x > x1 + _l)
        || (x < x0 - _l && x < x1 - _l)
    ) {
        return false;
    }

    if (x0 !== x1) {
        _a = (y0 - y1) / (x0 - x1);
        _b = (x0 * y1 - x1 * y0) / (x0 - x1) ;
    }
    else {
        return Math.abs(x - x0) <= _l / 2;
    }
    var tmp = _a * x - y + _b;
    var _s = tmp * tmp / (_a * _a + 1);
    return _s <= _l / 2 * _l / 2;
}

/**
 * 三次贝塞尔曲线描边包含判断
 * @param  {number}  x0
 * @param  {number}  y0
 * @param  {number}  x1
 * @param  {number}  y1
 * @param  {number}  x2
 * @param  {number}  y2
 * @param  {number}  x3
 * @param  {number}  y3
 * @param  {number}  lineWidth
 * @param  {number}  x
 * @param  {number}  y
 * @return {boolean}
 */
function containStroke$2(x0, y0, x1, y1, x2, y2, x3, y3, lineWidth, x, y) {
    if (lineWidth === 0) {
        return false;
    }
    var _l = lineWidth;
    // Quick reject
    if (
        (y > y0 + _l && y > y1 + _l && y > y2 + _l && y > y3 + _l)
        || (y < y0 - _l && y < y1 - _l && y < y2 - _l && y < y3 - _l)
        || (x > x0 + _l && x > x1 + _l && x > x2 + _l && x > x3 + _l)
        || (x < x0 - _l && x < x1 - _l && x < x2 - _l && x < x3 - _l)
    ) {
        return false;
    }
    var d = cubicProjectPoint(
        x0, y0, x1, y1, x2, y2, x3, y3,
        x, y, null
    );
    return d <= _l / 2;
}

/**
 * 二次贝塞尔曲线描边包含判断
 * @param  {number}  x0
 * @param  {number}  y0
 * @param  {number}  x1
 * @param  {number}  y1
 * @param  {number}  x2
 * @param  {number}  y2
 * @param  {number}  lineWidth
 * @param  {number}  x
 * @param  {number}  y
 * @return {boolean}
 */
function containStroke$3(x0, y0, x1, y1, x2, y2, lineWidth, x, y) {
    if (lineWidth === 0) {
        return false;
    }
    var _l = lineWidth;
    // Quick reject
    if (
        (y > y0 + _l && y > y1 + _l && y > y2 + _l)
        || (y < y0 - _l && y < y1 - _l && y < y2 - _l)
        || (x > x0 + _l && x > x1 + _l && x > x2 + _l)
        || (x < x0 - _l && x < x1 - _l && x < x2 - _l)
    ) {
        return false;
    }
    var d = quadraticProjectPoint(
        x0, y0, x1, y1, x2, y2,
        x, y, null
    );
    return d <= _l / 2;
}

var PI2$3 = Math.PI * 2;

function normalizeRadian(angle) {
    angle %= PI2$3;
    if (angle < 0) {
        angle += PI2$3;
    }
    return angle;
}

var PI2$2 = Math.PI * 2;

/**
 * 圆弧描边包含判断
 * @param  {number}  cx
 * @param  {number}  cy
 * @param  {number}  r
 * @param  {number}  startAngle
 * @param  {number}  endAngle
 * @param  {boolean}  anticlockwise
 * @param  {number} lineWidth
 * @param  {number}  x
 * @param  {number}  y
 * @return {Boolean}
 */
function containStroke$4(
    cx, cy, r, startAngle, endAngle, anticlockwise,
    lineWidth, x, y
) {

    if (lineWidth === 0) {
        return false;
    }
    var _l = lineWidth;

    x -= cx;
    y -= cy;
    var d = Math.sqrt(x * x + y * y);

    if ((d - _l > r) || (d + _l < r)) {
        return false;
    }
    if (Math.abs(startAngle - endAngle) % PI2$2 < 1e-4) {
        // Is a circle
        return true;
    }
    if (anticlockwise) {
        var tmp = startAngle;
        startAngle = normalizeRadian(endAngle);
        endAngle = normalizeRadian(tmp);
    } else {
        startAngle = normalizeRadian(startAngle);
        endAngle = normalizeRadian(endAngle);
    }
    if (startAngle > endAngle) {
        endAngle += PI2$2;
    }

    var angle = Math.atan2(y, x);
    if (angle < 0) {
        angle += PI2$2;
    }
    return (angle >= startAngle && angle <= endAngle)
        || (angle + PI2$2 >= startAngle && angle + PI2$2 <= endAngle);
}

function windingLine(x0, y0, x1, y1, x, y) {
    if ((y > y0 && y > y1) || (y < y0 && y < y1)) {
        return 0;
    }
    // Ignore horizontal line
    if (y1 === y0) {
        return 0;
    }
    var dir = y1 < y0 ? 1 : -1;
    var t = (y - y0) / (y1 - y0);

    // Avoid winding error when intersection point is the connect point of two line of polygon
    if (t === 1 || t === 0) {
        dir = y1 < y0 ? 0.5 : -0.5;
    }

    var x_ = t * (x1 - x0) + x0;

    return x_ > x ? dir : 0;
}

var CMD$1 = PathProxy.CMD;
var PI2$1 = Math.PI * 2;

var EPSILON$2 = 1e-4;

function isAroundEqual(a, b) {
    return Math.abs(a - b) < EPSILON$2;
}

// 临时数组
var roots = [-1, -1, -1];
var extrema = [-1, -1];

function swapExtrema() {
    var tmp = extrema[0];
    extrema[0] = extrema[1];
    extrema[1] = tmp;
}

function windingCubic(x0, y0, x1, y1, x2, y2, x3, y3, x, y) {
    // Quick reject
    if (
        (y > y0 && y > y1 && y > y2 && y > y3)
        || (y < y0 && y < y1 && y < y2 && y < y3)
    ) {
        return 0;
    }
    var nRoots = cubicRootAt(y0, y1, y2, y3, y, roots);
    if (nRoots === 0) {
        return 0;
    }
    else {
        var w = 0;
        var nExtrema = -1;
        var y0_, y1_;
        for (var i = 0; i < nRoots; i++) {
            var t = roots[i];

            // Avoid winding error when intersection point is the connect point of two line of polygon
            var unit = (t === 0 || t === 1) ? 0.5 : 1;

            var x_ = cubicAt(x0, x1, x2, x3, t);
            if (x_ < x) { // Quick reject
                continue;
            }
            if (nExtrema < 0) {
                nExtrema = cubicExtrema(y0, y1, y2, y3, extrema);
                if (extrema[1] < extrema[0] && nExtrema > 1) {
                    swapExtrema();
                }
                y0_ = cubicAt(y0, y1, y2, y3, extrema[0]);
                if (nExtrema > 1) {
                    y1_ = cubicAt(y0, y1, y2, y3, extrema[1]);
                }
            }
            if (nExtrema == 2) {
                // 分成三段单调函数
                if (t < extrema[0]) {
                    w += y0_ < y0 ? unit : -unit;
                }
                else if (t < extrema[1]) {
                    w += y1_ < y0_ ? unit : -unit;
                }
                else {
                    w += y3 < y1_ ? unit : -unit;
                }
            }
            else {
                // 分成两段单调函数
                if (t < extrema[0]) {
                    w += y0_ < y0 ? unit : -unit;
                }
                else {
                    w += y3 < y0_ ? unit : -unit;
                }
            }
        }
        return w;
    }
}

function windingQuadratic(x0, y0, x1, y1, x2, y2, x, y) {
    // Quick reject
    if (
        (y > y0 && y > y1 && y > y2)
        || (y < y0 && y < y1 && y < y2)
    ) {
        return 0;
    }
    var nRoots = quadraticRootAt(y0, y1, y2, y, roots);
    if (nRoots === 0) {
        return 0;
    }
    else {
        var t = quadraticExtremum(y0, y1, y2);
        if (t >= 0 && t <= 1) {
            var w = 0;
            var y_ = quadraticAt(y0, y1, y2, t);
            for (var i = 0; i < nRoots; i++) {
                // Remove one endpoint.
                var unit = (roots[i] === 0 || roots[i] === 1) ? 0.5 : 1;

                var x_ = quadraticAt(x0, x1, x2, roots[i]);
                if (x_ < x) {   // Quick reject
                    continue;
                }
                if (roots[i] < t) {
                    w += y_ < y0 ? unit : -unit;
                }
                else {
                    w += y2 < y_ ? unit : -unit;
                }
            }
            return w;
        }
        else {
            // Remove one endpoint.
            var unit = (roots[0] === 0 || roots[0] === 1) ? 0.5 : 1;

            var x_ = quadraticAt(x0, x1, x2, roots[0]);
            if (x_ < x) {   // Quick reject
                return 0;
            }
            return y2 < y0 ? unit : -unit;
        }
    }
}

// TODO
// Arc 旋转
function windingArc(
    cx, cy, r, startAngle, endAngle, anticlockwise, x, y
) {
    y -= cy;
    if (y > r || y < -r) {
        return 0;
    }
    var tmp = Math.sqrt(r * r - y * y);
    roots[0] = -tmp;
    roots[1] = tmp;

    var diff = Math.abs(startAngle - endAngle);
    if (diff < 1e-4) {
        return 0;
    }
    if (diff % PI2$1 < 1e-4) {
        // Is a circle
        startAngle = 0;
        endAngle = PI2$1;
        var dir = anticlockwise ? 1 : -1;
        if (x >= roots[0] + cx && x <= roots[1] + cx) {
            return dir;
        } else {
            return 0;
        }
    }

    if (anticlockwise) {
        var tmp = startAngle;
        startAngle = normalizeRadian(endAngle);
        endAngle = normalizeRadian(tmp);
    }
    else {
        startAngle = normalizeRadian(startAngle);
        endAngle = normalizeRadian(endAngle);
    }
    if (startAngle > endAngle) {
        endAngle += PI2$1;
    }

    var w = 0;
    for (var i = 0; i < 2; i++) {
        var x_ = roots[i];
        if (x_ + cx > x) {
            var angle = Math.atan2(y, x_);
            var dir = anticlockwise ? 1 : -1;
            if (angle < 0) {
                angle = PI2$1 + angle;
            }
            if (
                (angle >= startAngle && angle <= endAngle)
                || (angle + PI2$1 >= startAngle && angle + PI2$1 <= endAngle)
            ) {
                if (angle > Math.PI / 2 && angle < Math.PI * 1.5) {
                    dir = -dir;
                }
                w += dir;
            }
        }
    }
    return w;
}

function containPath(data, lineWidth, isStroke, x, y) {
    var w = 0;
    var xi = 0;
    var yi = 0;
    var x0 = 0;
    var y0 = 0;

    for (var i = 0; i < data.length;) {
        var cmd = data[i++];
        // Begin a new subpath
        if (cmd === CMD$1.M && i > 1) {
            // Close previous subpath
            if (!isStroke) {
                w += windingLine(xi, yi, x0, y0, x, y);
            }
            // 如果被任何一个 subpath 包含
            // if (w !== 0) {
            //     return true;
            // }
        }

        if (i == 1) {
            // 如果第一个命令是 L, C, Q
            // 则 previous point 同绘制命令的第一个 point
            //
            // 第一个命令为 Arc 的情况下会在后面特殊处理
            xi = data[i];
            yi = data[i + 1];

            x0 = xi;
            y0 = yi;
        }

        switch (cmd) {
            case CMD$1.M:
                // moveTo 命令重新创建一个新的 subpath, 并且更新新的起点
                // 在 closePath 的时候使用
                x0 = data[i++];
                y0 = data[i++];
                xi = x0;
                yi = y0;
                break;
            case CMD$1.L:
                if (isStroke) {
                    if (containStroke$1(xi, yi, data[i], data[i + 1], lineWidth, x, y)) {
                        return true;
                    }
                }
                else {
                    // NOTE 在第一个命令为 L, C, Q 的时候会计算出 NaN
                    w += windingLine(xi, yi, data[i], data[i + 1], x, y) || 0;
                }
                xi = data[i++];
                yi = data[i++];
                break;
            case CMD$1.C:
                if (isStroke) {
                    if (containStroke$2(xi, yi,
                        data[i++], data[i++], data[i++], data[i++], data[i], data[i + 1],
                        lineWidth, x, y
                    )) {
                        return true;
                    }
                }
                else {
                    w += windingCubic(
                        xi, yi,
                        data[i++], data[i++], data[i++], data[i++], data[i], data[i + 1],
                        x, y
                    ) || 0;
                }
                xi = data[i++];
                yi = data[i++];
                break;
            case CMD$1.Q:
                if (isStroke) {
                    if (containStroke$3(xi, yi,
                        data[i++], data[i++], data[i], data[i + 1],
                        lineWidth, x, y
                    )) {
                        return true;
                    }
                }
                else {
                    w += windingQuadratic(
                        xi, yi,
                        data[i++], data[i++], data[i], data[i + 1],
                        x, y
                    ) || 0;
                }
                xi = data[i++];
                yi = data[i++];
                break;
            case CMD$1.A:
                // TODO Arc 判断的开销比较大
                var cx = data[i++];
                var cy = data[i++];
                var rx = data[i++];
                var ry = data[i++];
                var theta = data[i++];
                var dTheta = data[i++];
                // TODO Arc 旋转
                var psi = data[i++];
                var anticlockwise = 1 - data[i++];
                var x1 = Math.cos(theta) * rx + cx;
                var y1 = Math.sin(theta) * ry + cy;
                // 不是直接使用 arc 命令
                if (i > 1) {
                    w += windingLine(xi, yi, x1, y1, x, y);
                }
                else {
                    // 第一个命令起点还未定义
                    x0 = x1;
                    y0 = y1;
                }
                // zr 使用scale来模拟椭圆, 这里也对x做一定的缩放
                var _x = (x - cx) * ry / rx + cx;
                if (isStroke) {
                    if (containStroke$4(
                        cx, cy, ry, theta, theta + dTheta, anticlockwise,
                        lineWidth, _x, y
                    )) {
                        return true;
                    }
                }
                else {
                    w += windingArc(
                        cx, cy, ry, theta, theta + dTheta, anticlockwise,
                        _x, y
                    );
                }
                xi = Math.cos(theta + dTheta) * rx + cx;
                yi = Math.sin(theta + dTheta) * ry + cy;
                break;
            case CMD$1.R:
                x0 = xi = data[i++];
                y0 = yi = data[i++];
                var width = data[i++];
                var height = data[i++];
                var x1 = x0 + width;
                var y1 = y0 + height;
                if (isStroke) {
                    if (containStroke$1(x0, y0, x1, y0, lineWidth, x, y)
                        || containStroke$1(x1, y0, x1, y1, lineWidth, x, y)
                        || containStroke$1(x1, y1, x0, y1, lineWidth, x, y)
                        || containStroke$1(x0, y1, x0, y0, lineWidth, x, y)
                    ) {
                        return true;
                    }
                }
                else {
                    // FIXME Clockwise ?
                    w += windingLine(x1, y0, x1, y1, x, y);
                    w += windingLine(x0, y1, x0, y0, x, y);
                }
                break;
            case CMD$1.Z:
                if (isStroke) {
                    if (containStroke$1(
                        xi, yi, x0, y0, lineWidth, x, y
                    )) {
                        return true;
                    }
                }
                else {
                    // Close a subpath
                    w += windingLine(xi, yi, x0, y0, x, y);
                    // 如果被任何一个 subpath 包含
                    // FIXME subpaths may overlap
                    // if (w !== 0) {
                    //     return true;
                    // }
                }
                xi = x0;
                yi = y0;
                break;
        }
    }
    if (!isStroke && !isAroundEqual(yi, y0)) {
        w += windingLine(xi, yi, x0, y0, x, y) || 0;
    }
    return w !== 0;
}

function contain(pathData, x, y) {
    return containPath(pathData, 0, false, x, y);
}

function containStroke(pathData, lineWidth, x, y) {
    return containPath(pathData, lineWidth, true, x, y);
}

var getCanvasPattern = Pattern.prototype.getCanvasPattern;

var abs = Math.abs;

var pathProxyForDraw = new PathProxy(true);
/**
 * @alias module:zrender/graphic/Path
 * @extends module:zrender/graphic/Displayable
 * @constructor
 * @param {Object} opts
 */
function Path(opts) {
    Displayable.call(this, opts);

    /**
     * @type {module:zrender/core/PathProxy}
     * @readOnly
     */
    this.path = null;
}

Path.prototype = {

    constructor: Path,

    type: 'path',

    __dirtyPath: true,

    strokeContainThreshold: 5,

    brush: function (ctx, prevEl) {
        var style = this.style;
        var path = this.path || pathProxyForDraw;
        var hasStroke = style.hasStroke();
        var hasFill = style.hasFill();
        var fill = style.fill;
        var stroke = style.stroke;
        var hasFillGradient = hasFill && !!(fill.colorStops);
        var hasStrokeGradient = hasStroke && !!(stroke.colorStops);
        var hasFillPattern = hasFill && !!(fill.image);
        var hasStrokePattern = hasStroke && !!(stroke.image);

        style.bind(ctx, this, prevEl);
        this.setTransform(ctx);

        if (this.__dirty) {
            var rect;
            // Update gradient because bounding rect may changed
            if (hasFillGradient) {
                rect = rect || this.getBoundingRect();
                this._fillGradient = style.getGradient(ctx, fill, rect);
            }
            if (hasStrokeGradient) {
                rect = rect || this.getBoundingRect();
                this._strokeGradient = style.getGradient(ctx, stroke, rect);
            }
        }
        // Use the gradient or pattern
        if (hasFillGradient) {
            // PENDING If may have affect the state
            ctx.fillStyle = this._fillGradient;
        }
        else if (hasFillPattern) {
            ctx.fillStyle = getCanvasPattern.call(fill, ctx);
        }
        if (hasStrokeGradient) {
            ctx.strokeStyle = this._strokeGradient;
        }
        else if (hasStrokePattern) {
            ctx.strokeStyle = getCanvasPattern.call(stroke, ctx);
        }

        var lineDash = style.lineDash;
        var lineDashOffset = style.lineDashOffset;

        var ctxLineDash = !!ctx.setLineDash;

        // Update path sx, sy
        var scale = this.getGlobalScale();
        path.setScale(scale[0], scale[1]);

        // Proxy context
        // Rebuild path in following 2 cases
        // 1. Path is dirty
        // 2. Path needs javascript implemented lineDash stroking.
        //    In this case, lineDash information will not be saved in PathProxy
        if (this.__dirtyPath
            || (lineDash && !ctxLineDash && hasStroke)
        ) {
            path.beginPath(ctx);

            // Setting line dash before build path
            if (lineDash && !ctxLineDash) {
                path.setLineDash(lineDash);
                path.setLineDashOffset(lineDashOffset);
            }

            this.buildPath(path, this.shape, false);

            // Clear path dirty flag
            if (this.path) {
                this.__dirtyPath = false;
            }
        }
        else {
            // Replay path building
            ctx.beginPath();
            this.path.rebuildPath(ctx);
        }

        hasFill && path.fill(ctx);

        if (lineDash && ctxLineDash) {
            ctx.setLineDash(lineDash);
            ctx.lineDashOffset = lineDashOffset;
        }

        hasStroke && path.stroke(ctx);

        if (lineDash && ctxLineDash) {
            // PENDING
            // Remove lineDash
            ctx.setLineDash([]);
        }

        // Draw rect text
        if (style.text != null) {
            // Only restore transform when needs draw text.
            this.restoreTransform(ctx);    
            this.drawRectText(ctx, this.getBoundingRect());
        }
    },

    // When bundling path, some shape may decide if use moveTo to begin a new subpath or closePath
    // Like in circle
    buildPath: function (ctx, shapeCfg, inBundle) {},

    createPathProxy: function () {
        this.path = new PathProxy();
    },

    getBoundingRect: function () {
        var rect = this._rect;
        var style = this.style;
        var needsUpdateRect = !rect;
        if (needsUpdateRect) {
            var path = this.path;
            if (!path) {
                // Create path on demand.
                path = this.path = new PathProxy();
            }
            if (this.__dirtyPath) {
                path.beginPath();
                this.buildPath(path, this.shape, false);
            }
            rect = path.getBoundingRect();
        }
        this._rect = rect;

        if (style.hasStroke()) {
            // Needs update rect with stroke lineWidth when
            // 1. Element changes scale or lineWidth
            // 2. Shape is changed
            var rectWithStroke = this._rectWithStroke || (this._rectWithStroke = rect.clone());
            if (this.__dirty || needsUpdateRect) {
                rectWithStroke.copy(rect);
                // FIXME Must after updateTransform
                var w = style.lineWidth;
                // PENDING, Min line width is needed when line is horizontal or vertical
                var lineScale = style.strokeNoScale ? this.getLineScale() : 1;

                // Only add extra hover lineWidth when there are no fill
                if (!style.hasFill()) {
                    w = Math.max(w, this.strokeContainThreshold || 4);
                }
                // Consider line width
                // Line scale can't be 0;
                if (lineScale > 1e-10) {
                    rectWithStroke.width += w / lineScale;
                    rectWithStroke.height += w / lineScale;
                    rectWithStroke.x -= w / lineScale / 2;
                    rectWithStroke.y -= w / lineScale / 2;
                }
            }

            // Return rect with stroke
            return rectWithStroke;
        }

        return rect;
    },

    contain: function (x, y) {
        var localPos = this.transformCoordToLocal(x, y);
        var rect = this.getBoundingRect();
        var style = this.style;
        x = localPos[0];
        y = localPos[1];

        if (rect.contain(x, y)) {
            var pathData = this.path.data;
            if (style.hasStroke()) {
                var lineWidth = style.lineWidth;
                var lineScale = style.strokeNoScale ? this.getLineScale() : 1;
                // Line scale can't be 0;
                if (lineScale > 1e-10) {
                    // Only add extra hover lineWidth when there are no fill
                    if (!style.hasFill()) {
                        lineWidth = Math.max(lineWidth, this.strokeContainThreshold);
                    }
                    if (containStroke(
                        pathData, lineWidth / lineScale, x, y
                    )) {
                        return true;
                    }
                }
            }
            if (style.hasFill()) {
                return contain(pathData, x, y);
            }
        }
        return false;
    },

    /**
     * @param  {boolean} dirtyPath
     */
    dirty: function (dirtyPath) {
        if (dirtyPath == null) {
            dirtyPath = true;
        }
        // Only mark dirty, not mark clean
        if (dirtyPath) {
            this.__dirtyPath = dirtyPath;
            this._rect = null;
        }

        this.__dirty = true;

        this.__zr && this.__zr.refresh();

        // Used as a clipping path
        if (this.__clipTarget) {
            this.__clipTarget.dirty();
        }
    },

    /**
     * Alias for animate('shape')
     * @param {boolean} loop
     */
    animateShape: function (loop) {
        return this.animate('shape', loop);
    },

    // Overwrite attrKV
    attrKV: function (key, value) {
        // FIXME
        if (key === 'shape') {
            this.setShape(value);
            this.__dirtyPath = true;
            this._rect = null;
        }
        else {
            Displayable.prototype.attrKV.call(this, key, value);
        }
    },

    /**
     * @param {Object|string} key
     * @param {*} value
     */
    setShape: function (key, value) {
        var shape = this.shape;
        // Path from string may not have shape
        if (shape) {
            if (isObject$1(key)) {
                for (var name in key) {
                    if (key.hasOwnProperty(name)) {
                        shape[name] = key[name];
                    }
                }
            }
            else {
                shape[key] = value;
            }
            this.dirty(true);
        }
        return this;
    },

    getLineScale: function () {
        var m = this.transform;
        // Get the line scale.
        // Determinant of `m` means how much the area is enlarged by the
        // transformation. So its square root can be used as a scale factor
        // for width.
        return m && abs(m[0] - 1) > 1e-10 && abs(m[3] - 1) > 1e-10
            ? Math.sqrt(abs(m[0] * m[3] - m[2] * m[1]))
            : 1;
    }
};

/**
 * 扩展一个 Path element, 比如星形，圆等。
 * Extend a path element
 * @param {Object} props
 * @param {string} props.type Path type
 * @param {Function} props.init Initialize
 * @param {Function} props.buildPath Overwrite buildPath method
 * @param {Object} [props.style] Extended default style config
 * @param {Object} [props.shape] Extended default shape config
 */
Path.extend = function (defaults$$1) {
    var Sub = function (opts) {
        Path.call(this, opts);

        if (defaults$$1.style) {
            // Extend default style
            this.style.extendFrom(defaults$$1.style, false);
        }

        // Extend default shape
        var defaultShape = defaults$$1.shape;
        if (defaultShape) {
            this.shape = this.shape || {};
            var thisShape = this.shape;
            for (var name in defaultShape) {
                if (
                    ! thisShape.hasOwnProperty(name)
                    && defaultShape.hasOwnProperty(name)
                ) {
                    thisShape[name] = defaultShape[name];
                }
            }
        }

        defaults$$1.init && defaults$$1.init.call(this, opts);
    };

    inherits(Sub, Path);

    // FIXME 不能 extend position, rotation 等引用对象
    for (var name in defaults$$1) {
        // Extending prototype values and methods
        if (name !== 'style' && name !== 'shape') {
            Sub.prototype[name] = defaults$$1[name];
        }
    }

    return Sub;
};

inherits(Path, Displayable);

var CMD$2 = PathProxy.CMD;

var points = [[], [], []];
var mathSqrt$3 = Math.sqrt;
var mathAtan2 = Math.atan2;

var transformPath = function (path, m) {
    var data = path.data;
    var cmd;
    var nPoint;
    var i;
    var j;
    var k;
    var p;

    var M = CMD$2.M;
    var C = CMD$2.C;
    var L = CMD$2.L;
    var R = CMD$2.R;
    var A = CMD$2.A;
    var Q = CMD$2.Q;

    for (i = 0, j = 0; i < data.length;) {
        cmd = data[i++];
        j = i;
        nPoint = 0;

        switch (cmd) {
            case M:
                nPoint = 1;
                break;
            case L:
                nPoint = 1;
                break;
            case C:
                nPoint = 3;
                break;
            case Q:
                nPoint = 2;
                break;
            case A:
                var x = m[4];
                var y = m[5];
                var sx = mathSqrt$3(m[0] * m[0] + m[1] * m[1]);
                var sy = mathSqrt$3(m[2] * m[2] + m[3] * m[3]);
                var angle = mathAtan2(-m[1] / sy, m[0] / sx);
                // cx
                data[i] *= sx;
                data[i++] += x;
                // cy
                data[i] *= sy;
                data[i++] += y;
                // Scale rx and ry
                // FIXME Assume psi is 0 here
                data[i++] *= sx;
                data[i++] *= sy;

                // Start angle
                data[i++] += angle;
                // end angle
                data[i++] += angle;
                // FIXME psi
                i += 2;
                j = i;
                break;
            case R:
                // x0, y0
                p[0] = data[i++];
                p[1] = data[i++];
                applyTransform(p, p, m);
                data[j++] = p[0];
                data[j++] = p[1];
                // x1, y1
                p[0] += data[i++];
                p[1] += data[i++];
                applyTransform(p, p, m);
                data[j++] = p[0];
                data[j++] = p[1];
        }

        for (k = 0; k < nPoint; k++) {
            var p = points[k];
            p[0] = data[i++];
            p[1] = data[i++];

            applyTransform(p, p, m);
            // Write back
            data[j++] = p[0];
            data[j++] = p[1];
        }
    }
};

// command chars
var cc = [
    'm', 'M', 'l', 'L', 'v', 'V', 'h', 'H', 'z', 'Z',
    'c', 'C', 'q', 'Q', 't', 'T', 's', 'S', 'a', 'A'
];

var mathSqrt = Math.sqrt;
var mathSin = Math.sin;
var mathCos = Math.cos;
var PI = Math.PI;

var vMag = function(v) {
    return Math.sqrt(v[0] * v[0] + v[1] * v[1]);
};
var vRatio = function(u, v) {
    return (u[0] * v[0] + u[1] * v[1]) / (vMag(u) * vMag(v));
};
var vAngle = function(u, v) {
    return (u[0] * v[1] < u[1] * v[0] ? -1 : 1)
            * Math.acos(vRatio(u, v));
};

function processArc(x1, y1, x2, y2, fa, fs, rx, ry, psiDeg, cmd, path) {
    var psi = psiDeg * (PI / 180.0);
    var xp = mathCos(psi) * (x1 - x2) / 2.0
                + mathSin(psi) * (y1 - y2) / 2.0;
    var yp = -1 * mathSin(psi) * (x1 - x2) / 2.0
                + mathCos(psi) * (y1 - y2) / 2.0;

    var lambda = (xp * xp) / (rx * rx) + (yp * yp) / (ry * ry);

    if (lambda > 1) {
        rx *= mathSqrt(lambda);
        ry *= mathSqrt(lambda);
    }

    var f = (fa === fs ? -1 : 1)
        * mathSqrt((((rx * rx) * (ry * ry))
                - ((rx * rx) * (yp * yp))
                - ((ry * ry) * (xp * xp))) / ((rx * rx) * (yp * yp)
                + (ry * ry) * (xp * xp))
            ) || 0;

    var cxp = f * rx * yp / ry;
    var cyp = f * -ry * xp / rx;

    var cx = (x1 + x2) / 2.0
                + mathCos(psi) * cxp
                - mathSin(psi) * cyp;
    var cy = (y1 + y2) / 2.0
            + mathSin(psi) * cxp
            + mathCos(psi) * cyp;

    var theta = vAngle([ 1, 0 ], [ (xp - cxp) / rx, (yp - cyp) / ry ]);
    var u = [ (xp - cxp) / rx, (yp - cyp) / ry ];
    var v = [ (-1 * xp - cxp) / rx, (-1 * yp - cyp) / ry ];
    var dTheta = vAngle(u, v);

    if (vRatio(u, v) <= -1) {
        dTheta = PI;
    }
    if (vRatio(u, v) >= 1) {
        dTheta = 0;
    }
    if (fs === 0 && dTheta > 0) {
        dTheta = dTheta - 2 * PI;
    }
    if (fs === 1 && dTheta < 0) {
        dTheta = dTheta + 2 * PI;
    }

    path.addData(cmd, cx, cy, rx, ry, theta, dTheta, psi, fs);
}

function createPathProxyFromString(data) {
    if (!data) {
        return [];
    }

    // command string
    var cs = data.replace(/-/g, ' -')
        .replace(/  /g, ' ')
        .replace(/ /g, ',')
        .replace(/,,/g, ',');

    var n;
    // create pipes so that we can split the data
    for (n = 0; n < cc.length; n++) {
        cs = cs.replace(new RegExp(cc[n], 'g'), '|' + cc[n]);
    }

    // create array
    var arr = cs.split('|');
    // init context point
    var cpx = 0;
    var cpy = 0;

    var path = new PathProxy();
    var CMD = PathProxy.CMD;

    var prevCmd;
    for (n = 1; n < arr.length; n++) {
        var str = arr[n];
        var c = str.charAt(0);
        var off = 0;
        var p = str.slice(1).replace(/e,-/g, 'e-').split(',');
        var cmd;

        if (p.length > 0 && p[0] === '') {
            p.shift();
        }

        for (var i = 0; i < p.length; i++) {
            p[i] = parseFloat(p[i]);
        }
        while (off < p.length && !isNaN(p[off])) {
            if (isNaN(p[0])) {
                break;
            }
            var ctlPtx;
            var ctlPty;

            var rx;
            var ry;
            var psi;
            var fa;
            var fs;

            var x1 = cpx;
            var y1 = cpy;

            // convert l, H, h, V, and v to L
            switch (c) {
                case 'l':
                    cpx += p[off++];
                    cpy += p[off++];
                    cmd = CMD.L;
                    path.addData(cmd, cpx, cpy);
                    break;
                case 'L':
                    cpx = p[off++];
                    cpy = p[off++];
                    cmd = CMD.L;
                    path.addData(cmd, cpx, cpy);
                    break;
                case 'm':
                    cpx += p[off++];
                    cpy += p[off++];
                    cmd = CMD.M;
                    path.addData(cmd, cpx, cpy);
                    c = 'l';
                    break;
                case 'M':
                    cpx = p[off++];
                    cpy = p[off++];
                    cmd = CMD.M;
                    path.addData(cmd, cpx, cpy);
                    c = 'L';
                    break;
                case 'h':
                    cpx += p[off++];
                    cmd = CMD.L;
                    path.addData(cmd, cpx, cpy);
                    break;
                case 'H':
                    cpx = p[off++];
                    cmd = CMD.L;
                    path.addData(cmd, cpx, cpy);
                    break;
                case 'v':
                    cpy += p[off++];
                    cmd = CMD.L;
                    path.addData(cmd, cpx, cpy);
                    break;
                case 'V':
                    cpy = p[off++];
                    cmd = CMD.L;
                    path.addData(cmd, cpx, cpy);
                    break;
                case 'C':
                    cmd = CMD.C;
                    path.addData(
                        cmd, p[off++], p[off++], p[off++], p[off++], p[off++], p[off++]
                    );
                    cpx = p[off - 2];
                    cpy = p[off - 1];
                    break;
                case 'c':
                    cmd = CMD.C;
                    path.addData(
                        cmd,
                        p[off++] + cpx, p[off++] + cpy,
                        p[off++] + cpx, p[off++] + cpy,
                        p[off++] + cpx, p[off++] + cpy
                    );
                    cpx += p[off - 2];
                    cpy += p[off - 1];
                    break;
                case 'S':
                    ctlPtx = cpx;
                    ctlPty = cpy;
                    var len = path.len();
                    var pathData = path.data;
                    if (prevCmd === CMD.C) {
                        ctlPtx += cpx - pathData[len - 4];
                        ctlPty += cpy - pathData[len - 3];
                    }
                    cmd = CMD.C;
                    x1 = p[off++];
                    y1 = p[off++];
                    cpx = p[off++];
                    cpy = p[off++];
                    path.addData(cmd, ctlPtx, ctlPty, x1, y1, cpx, cpy);
                    break;
                case 's':
                    ctlPtx = cpx;
                    ctlPty = cpy;
                    var len = path.len();
                    var pathData = path.data;
                    if (prevCmd === CMD.C) {
                        ctlPtx += cpx - pathData[len - 4];
                        ctlPty += cpy - pathData[len - 3];
                    }
                    cmd = CMD.C;
                    x1 = cpx + p[off++];
                    y1 = cpy + p[off++];
                    cpx += p[off++];
                    cpy += p[off++];
                    path.addData(cmd, ctlPtx, ctlPty, x1, y1, cpx, cpy);
                    break;
                case 'Q':
                    x1 = p[off++];
                    y1 = p[off++];
                    cpx = p[off++];
                    cpy = p[off++];
                    cmd = CMD.Q;
                    path.addData(cmd, x1, y1, cpx, cpy);
                    break;
                case 'q':
                    x1 = p[off++] + cpx;
                    y1 = p[off++] + cpy;
                    cpx += p[off++];
                    cpy += p[off++];
                    cmd = CMD.Q;
                    path.addData(cmd, x1, y1, cpx, cpy);
                    break;
                case 'T':
                    ctlPtx = cpx;
                    ctlPty = cpy;
                    var len = path.len();
                    var pathData = path.data;
                    if (prevCmd === CMD.Q) {
                        ctlPtx += cpx - pathData[len - 4];
                        ctlPty += cpy - pathData[len - 3];
                    }
                    cpx = p[off++];
                    cpy = p[off++];
                    cmd = CMD.Q;
                    path.addData(cmd, ctlPtx, ctlPty, cpx, cpy);
                    break;
                case 't':
                    ctlPtx = cpx;
                    ctlPty = cpy;
                    var len = path.len();
                    var pathData = path.data;
                    if (prevCmd === CMD.Q) {
                        ctlPtx += cpx - pathData[len - 4];
                        ctlPty += cpy - pathData[len - 3];
                    }
                    cpx += p[off++];
                    cpy += p[off++];
                    cmd = CMD.Q;
                    path.addData(cmd, ctlPtx, ctlPty, cpx, cpy);
                    break;
                case 'A':
                    rx = p[off++];
                    ry = p[off++];
                    psi = p[off++];
                    fa = p[off++];
                    fs = p[off++];

                    x1 = cpx, y1 = cpy;
                    cpx = p[off++];
                    cpy = p[off++];
                    cmd = CMD.A;
                    processArc(
                        x1, y1, cpx, cpy, fa, fs, rx, ry, psi, cmd, path
                    );
                    break;
                case 'a':
                    rx = p[off++];
                    ry = p[off++];
                    psi = p[off++];
                    fa = p[off++];
                    fs = p[off++];

                    x1 = cpx, y1 = cpy;
                    cpx += p[off++];
                    cpy += p[off++];
                    cmd = CMD.A;
                    processArc(
                        x1, y1, cpx, cpy, fa, fs, rx, ry, psi, cmd, path
                    );
                    break;
            }
        }

        if (c === 'z' || c === 'Z') {
            cmd = CMD.Z;
            path.addData(cmd);
        }

        prevCmd = cmd;
    }

    path.toStatic();

    return path;
}

// TODO Optimize double memory cost problem
function createPathOptions(str, opts) {
    var pathProxy = createPathProxyFromString(str);
    opts = opts || {};
    opts.buildPath = function (path) {
        if (path.setData) {
            path.setData(pathProxy.data);
            // Svg and vml renderer don't have context
            var ctx = path.getContext();
            if (ctx) {
                path.rebuildPath(ctx);
            }
        }
        else {
            var ctx = path;
            pathProxy.rebuildPath(ctx);
        }
    };

    opts.applyTransform = function (m) {
        transformPath(pathProxy, m);
        this.dirty(true);
    };

    return opts;
}

/**
 * Create a Path object from path string data
 * http://www.w3.org/TR/SVG/paths.html#PathData
 * @param  {Object} opts Other options
 */
function createFromString(str, opts) {
    return new Path(createPathOptions(str, opts));
}

/**
 * Create a Path class from path string data
 * @param  {string} str
 * @param  {Object} opts Other options
 */
function extendFromString(str, opts) {
    return Path.extend(createPathOptions(str, opts));
}

/**
 * Merge multiple paths
 */
// TODO Apply transform
// TODO stroke dash
// TODO Optimize double memory cost problem
function mergePath$1(pathEls, opts) {
    var pathList = [];
    var len = pathEls.length;
    for (var i = 0; i < len; i++) {
        var pathEl = pathEls[i];
        if (!pathEl.path) {
            pathEl.createPathProxy();
        }
        if (pathEl.__dirtyPath) {
            pathEl.buildPath(pathEl.path, pathEl.shape, true);
        }
        pathList.push(pathEl.path);
    }

    var pathBundle = new Path(opts);
    // Need path proxy.
    pathBundle.createPathProxy();
    pathBundle.buildPath = function (path) {
        path.appendPath(pathList);
        // Svg and vml renderer don't have context
        var ctx = path.getContext();
        if (ctx) {
            path.rebuildPath(ctx);
        }
    };

    return pathBundle;
}

/**
 * @alias zrender/graphic/Text
 * @extends module:zrender/graphic/Displayable
 * @constructor
 * @param {Object} opts
 */
var Text = function (opts) { // jshint ignore:line
    Displayable.call(this, opts);
};

Text.prototype = {

    constructor: Text,

    type: 'text',

    brush: function (ctx, prevEl) {
        var style = this.style;

        // Optimize, avoid normalize every time.
        this.__dirty && normalizeTextStyle(style, true);

        // Use props with prefix 'text'.
        style.fill = style.stroke = style.shadowBlur = style.shadowColor =
            style.shadowOffsetX = style.shadowOffsetY = null;

        var text = style.text;
        // Convert to string
        text != null && (text += '');

        // Always bind style
        style.bind(ctx, this, prevEl);

        if (!needDrawText(text, style)) {
            return;
        }

        this.setTransform(ctx);

        renderText(this, ctx, text, style);

        this.restoreTransform(ctx);
    },

    getBoundingRect: function () {
        var style = this.style;

        // Optimize, avoid normalize every time.
        this.__dirty && normalizeTextStyle(style, true);

        if (!this._rect) {
            var text = style.text;
            text != null ? (text += '') : (text = '');

            var rect = getBoundingRect(
                style.text + '',
                style.font,
                style.textAlign,
                style.textVerticalAlign,
                style.textPadding,
                style.rich
            );

            rect.x += style.x || 0;
            rect.y += style.y || 0;

            if (getStroke(style.textStroke, style.textStrokeWidth)) {
                var w = style.textStrokeWidth;
                rect.x -= w / 2;
                rect.y -= w / 2;
                rect.width += w;
                rect.height += w;
            }

            this._rect = rect;
        }

        return this._rect;
    }
};

inherits(Text, Displayable);

/**
 * 圆形
 * @module zrender/shape/Circle
 */

var Circle = Path.extend({

    type: 'circle',

    shape: {
        cx: 0,
        cy: 0,
        r: 0
    },


    buildPath : function (ctx, shape, inBundle) {
        // Better stroking in ShapeBundle
        // Always do it may have performence issue ( fill may be 2x more cost)
        if (inBundle) {
            ctx.moveTo(shape.cx + shape.r, shape.cy);
        }
        // else {
        //     if (ctx.allocate && !ctx.data.length) {
        //         ctx.allocate(ctx.CMD_MEM_SIZE.A);
        //     }
        // }
        // Better stroking in ShapeBundle
        // ctx.moveTo(shape.cx + shape.r, shape.cy);
        ctx.arc(shape.cx, shape.cy, shape.r, 0, Math.PI * 2, true);
    }
});

// Fix weird bug in some version of IE11 (like 11.0.9600.178**),
// where exception "unexpected call to method or property access"
// might be thrown when calling ctx.fill or ctx.stroke after a path
// whose area size is zero is drawn and ctx.clip() is called and
// shadowBlur is set. See #4572, #3112, #5777.
// (e.g.,
//  ctx.moveTo(10, 10);
//  ctx.lineTo(20, 10);
//  ctx.closePath();
//  ctx.clip();
//  ctx.shadowBlur = 10;
//  ...
//  ctx.fill();
// )

var shadowTemp = [
    ['shadowBlur', 0],
    ['shadowColor', '#000'],
    ['shadowOffsetX', 0],
    ['shadowOffsetY', 0]
];

var fixClipWithShadow = function (orignalBrush) {

    // version string can be: '11.0'
    return (env$1.browser.ie && env$1.browser.version >= 11)

        ? function () {
            var clipPaths = this.__clipPaths;
            var style = this.style;
            var modified;

            if (clipPaths) {
                for (var i = 0; i < clipPaths.length; i++) {
                    var clipPath = clipPaths[i];
                    var shape = clipPath && clipPath.shape;
                    var type = clipPath && clipPath.type;

                    if (shape && (
                        (type === 'sector' && shape.startAngle === shape.endAngle)
                        || (type === 'rect' && (!shape.width || !shape.height))
                    )) {
                        for (var j = 0; j < shadowTemp.length; j++) {
                            // It is save to put shadowTemp static, because shadowTemp
                            // will be all modified each item brush called.
                            shadowTemp[j][2] = style[shadowTemp[j][0]];
                            style[shadowTemp[j][0]] = shadowTemp[j][1];
                        }
                        modified = true;
                        break;
                    }
                }
            }

            orignalBrush.apply(this, arguments);

            if (modified) {
                for (var j = 0; j < shadowTemp.length; j++) {
                    style[shadowTemp[j][0]] = shadowTemp[j][2];
                }
            }
        }

        : orignalBrush;
};

/**
 * 扇形
 * @module zrender/graphic/shape/Sector
 */

var Sector = Path.extend({

    type: 'sector',

    shape: {

        cx: 0,

        cy: 0,

        r0: 0,

        r: 0,

        startAngle: 0,

        endAngle: Math.PI * 2,

        clockwise: true
    },

    brush: fixClipWithShadow(Path.prototype.brush),

    buildPath: function (ctx, shape) {

        var x = shape.cx;
        var y = shape.cy;
        var r0 = Math.max(shape.r0 || 0, 0);
        var r = Math.max(shape.r, 0);
        var startAngle = shape.startAngle;
        var endAngle = shape.endAngle;
        var clockwise = shape.clockwise;

        var unitX = Math.cos(startAngle);
        var unitY = Math.sin(startAngle);

        ctx.moveTo(unitX * r0 + x, unitY * r0 + y);

        ctx.lineTo(unitX * r + x, unitY * r + y);

        ctx.arc(x, y, r, startAngle, endAngle, !clockwise);

        ctx.lineTo(
            Math.cos(endAngle) * r0 + x,
            Math.sin(endAngle) * r0 + y
        );

        if (r0 !== 0) {
            ctx.arc(x, y, r0, endAngle, startAngle, clockwise);
        }

        ctx.closePath();
    }
});

/**
 * 圆环
 * @module zrender/graphic/shape/Ring
 */

var Ring = Path.extend({

    type: 'ring',

    shape: {
        cx: 0,
        cy: 0,
        r: 0,
        r0: 0
    },

    buildPath: function (ctx, shape) {
        var x = shape.cx;
        var y = shape.cy;
        var PI2 = Math.PI * 2;
        ctx.moveTo(x + shape.r, y);
        ctx.arc(x, y, shape.r, 0, PI2, false);
        ctx.moveTo(x + shape.r0, y);
        ctx.arc(x, y, shape.r0, 0, PI2, true);
    }
});

/**
 * Catmull-Rom spline 插值折线
 * @module zrender/shape/util/smoothSpline
 * @author pissang (https://www.github.com/pissang)
 *         Kener (@Kener-林峰, kener.linfeng@gmail.com)
 *         errorrik (errorrik@gmail.com)
 */

/**
 * @inner
 */
function interpolate(p0, p1, p2, p3, t, t2, t3) {
    var v0 = (p2 - p0) * 0.5;
    var v1 = (p3 - p1) * 0.5;
    return (2 * (p1 - p2) + v0 + v1) * t3
            + (-3 * (p1 - p2) - 2 * v0 - v1) * t2
            + v0 * t + p1;
}

/**
 * @alias module:zrender/shape/util/smoothSpline
 * @param {Array} points 线段顶点数组
 * @param {boolean} isLoop
 * @return {Array}
 */
var smoothSpline = function (points, isLoop) {
    var len$$1 = points.length;
    var ret = [];

    var distance$$1 = 0;
    for (var i = 1; i < len$$1; i++) {
        distance$$1 += distance(points[i - 1], points[i]);
    }

    var segs = distance$$1 / 2;
    segs = segs < len$$1 ? len$$1 : segs;
    for (var i = 0; i < segs; i++) {
        var pos = i / (segs - 1) * (isLoop ? len$$1 : len$$1 - 1);
        var idx = Math.floor(pos);

        var w = pos - idx;

        var p0;
        var p1 = points[idx % len$$1];
        var p2;
        var p3;
        if (!isLoop) {
            p0 = points[idx === 0 ? idx : idx - 1];
            p2 = points[idx > len$$1 - 2 ? len$$1 - 1 : idx + 1];
            p3 = points[idx > len$$1 - 3 ? len$$1 - 1 : idx + 2];
        }
        else {
            p0 = points[(idx - 1 + len$$1) % len$$1];
            p2 = points[(idx + 1) % len$$1];
            p3 = points[(idx + 2) % len$$1];
        }

        var w2 = w * w;
        var w3 = w * w2;

        ret.push([
            interpolate(p0[0], p1[0], p2[0], p3[0], w, w2, w3),
            interpolate(p0[1], p1[1], p2[1], p3[1], w, w2, w3)
        ]);
    }
    return ret;
};

/**
 * 贝塞尔平滑曲线
 * @module zrender/shape/util/smoothBezier
 * @author pissang (https://www.github.com/pissang)
 *         Kener (@Kener-林峰, kener.linfeng@gmail.com)
 *         errorrik (errorrik@gmail.com)
 */

/**
 * 贝塞尔平滑曲线
 * @alias module:zrender/shape/util/smoothBezier
 * @param {Array} points 线段顶点数组
 * @param {number} smooth 平滑等级, 0-1
 * @param {boolean} isLoop
 * @param {Array} constraint 将计算出来的控制点约束在一个包围盒内
 *                           比如 [[0, 0], [100, 100]], 这个包围盒会与
 *                           整个折线的包围盒做一个并集用来约束控制点。
 * @param {Array} 计算出来的控制点数组
 */
var smoothBezier = function (points, smooth, isLoop, constraint) {
    var cps = [];

    var v = [];
    var v1 = [];
    var v2 = [];
    var prevPoint;
    var nextPoint;

    var min$$1, max$$1;
    if (constraint) {
        min$$1 = [Infinity, Infinity];
        max$$1 = [-Infinity, -Infinity];
        for (var i = 0, len$$1 = points.length; i < len$$1; i++) {
            min(min$$1, min$$1, points[i]);
            max(max$$1, max$$1, points[i]);
        }
        // 与指定的包围盒做并集
        min(min$$1, min$$1, constraint[0]);
        max(max$$1, max$$1, constraint[1]);
    }

    for (var i = 0, len$$1 = points.length; i < len$$1; i++) {
        var point = points[i];

        if (isLoop) {
            prevPoint = points[i ? i - 1 : len$$1 - 1];
            nextPoint = points[(i + 1) % len$$1];
        }
        else {
            if (i === 0 || i === len$$1 - 1) {
                cps.push(clone$1(points[i]));
                continue;
            }
            else {
                prevPoint = points[i - 1];
                nextPoint = points[i + 1];
            }
        }

        sub(v, nextPoint, prevPoint);

        // use degree to scale the handle length
        scale(v, v, smooth);

        var d0 = distance(point, prevPoint);
        var d1 = distance(point, nextPoint);
        var sum = d0 + d1;
        if (sum !== 0) {
            d0 /= sum;
            d1 /= sum;
        }

        scale(v1, v, -d0);
        scale(v2, v, d1);
        var cp0 = add([], point, v1);
        var cp1 = add([], point, v2);
        if (constraint) {
            max(cp0, cp0, min$$1);
            min(cp0, cp0, max$$1);
            max(cp1, cp1, min$$1);
            min(cp1, cp1, max$$1);
        }
        cps.push(cp0);
        cps.push(cp1);
    }

    if (isLoop) {
        cps.push(cps.shift());
    }

    return cps;
};

function buildPath$1(ctx, shape, closePath) {
    var points = shape.points;
    var smooth = shape.smooth;
    if (points && points.length >= 2) {
        if (smooth && smooth !== 'spline') {
            var controlPoints = smoothBezier(
                points, smooth, closePath, shape.smoothConstraint
            );

            ctx.moveTo(points[0][0], points[0][1]);
            var len = points.length;
            for (var i = 0; i < (closePath ? len : len - 1); i++) {
                var cp1 = controlPoints[i * 2];
                var cp2 = controlPoints[i * 2 + 1];
                var p = points[(i + 1) % len];
                ctx.bezierCurveTo(
                    cp1[0], cp1[1], cp2[0], cp2[1], p[0], p[1]
                );
            }
        }
        else {
            if (smooth === 'spline') {
                points = smoothSpline(points, closePath);
            }

            ctx.moveTo(points[0][0], points[0][1]);
            for (var i = 1, l = points.length; i < l; i++) {
                ctx.lineTo(points[i][0], points[i][1]);
            }
        }

        closePath && ctx.closePath();
    }
}

/**
 * 多边形
 * @module zrender/shape/Polygon
 */

var Polygon = Path.extend({

    type: 'polygon',

    shape: {
        points: null,

        smooth: false,

        smoothConstraint: null
    },

    buildPath: function (ctx, shape) {
        buildPath$1(ctx, shape, true);
    }
});

/**
 * @module zrender/graphic/shape/Polyline
 */

var Polyline = Path.extend({

    type: 'polyline',

    shape: {
        points: null,

        smooth: false,

        smoothConstraint: null
    },

    style: {
        stroke: '#000',

        fill: null
    },

    buildPath: function (ctx, shape) {
        buildPath$1(ctx, shape, false);
    }
});

/**
 * 矩形
 * @module zrender/graphic/shape/Rect
 */

var Rect = Path.extend({

    type: 'rect',

    shape: {
        // 左上、右上、右下、左下角的半径依次为r1、r2、r3、r4
        // r缩写为1         相当于 [1, 1, 1, 1]
        // r缩写为[1]       相当于 [1, 1, 1, 1]
        // r缩写为[1, 2]    相当于 [1, 2, 1, 2]
        // r缩写为[1, 2, 3] 相当于 [1, 2, 3, 2]
        r: 0,

        x: 0,
        y: 0,
        width: 0,
        height: 0
    },

    buildPath: function (ctx, shape) {
        var x = shape.x;
        var y = shape.y;
        var width = shape.width;
        var height = shape.height;
        if (!shape.r) {
            ctx.rect(x, y, width, height);
        }
        else {
            buildPath(ctx, shape);
        }
        ctx.closePath();
        return;
    }
});

/**
 * 直线
 * @module zrender/graphic/shape/Line
 */

var Line = Path.extend({

    type: 'line',

    shape: {
        // Start point
        x1: 0,
        y1: 0,
        // End point
        x2: 0,
        y2: 0,

        percent: 1
    },

    style: {
        stroke: '#000',
        fill: null
    },

    buildPath: function (ctx, shape) {
        var x1 = shape.x1;
        var y1 = shape.y1;
        var x2 = shape.x2;
        var y2 = shape.y2;
        var percent = shape.percent;

        if (percent === 0) {
            return;
        }

        ctx.moveTo(x1, y1);

        if (percent < 1) {
            x2 = x1 * (1 - percent) + x2 * percent;
            y2 = y1 * (1 - percent) + y2 * percent;
        }
        ctx.lineTo(x2, y2);
    },

    /**
     * Get point at percent
     * @param  {number} percent
     * @return {Array.<number>}
     */
    pointAt: function (p) {
        var shape = this.shape;
        return [
            shape.x1 * (1 - p) + shape.x2 * p,
            shape.y1 * (1 - p) + shape.y2 * p
        ];
    }
});

/**
 * 贝塞尔曲线
 * @module zrender/shape/BezierCurve
 */

var out = [];

function someVectorAt(shape, t, isTangent) {
    var cpx2 = shape.cpx2;
    var cpy2 = shape.cpy2;
    if (cpx2 === null || cpy2 === null) {
        return [
            (isTangent ? cubicDerivativeAt : cubicAt)(shape.x1, shape.cpx1, shape.cpx2, shape.x2, t),
            (isTangent ? cubicDerivativeAt : cubicAt)(shape.y1, shape.cpy1, shape.cpy2, shape.y2, t)
        ];
    }
    else {
        return [
            (isTangent ? quadraticDerivativeAt : quadraticAt)(shape.x1, shape.cpx1, shape.x2, t),
            (isTangent ? quadraticDerivativeAt : quadraticAt)(shape.y1, shape.cpy1, shape.y2, t)
        ];
    }
}

var BezierCurve = Path.extend({

    type: 'bezier-curve',

    shape: {
        x1: 0,
        y1: 0,
        x2: 0,
        y2: 0,
        cpx1: 0,
        cpy1: 0,
        // cpx2: 0,
        // cpy2: 0

        // Curve show percent, for animating
        percent: 1
    },

    style: {
        stroke: '#000',
        fill: null
    },

    buildPath: function (ctx, shape) {
        var x1 = shape.x1;
        var y1 = shape.y1;
        var x2 = shape.x2;
        var y2 = shape.y2;
        var cpx1 = shape.cpx1;
        var cpy1 = shape.cpy1;
        var cpx2 = shape.cpx2;
        var cpy2 = shape.cpy2;
        var percent = shape.percent;
        if (percent === 0) {
            return;
        }

        ctx.moveTo(x1, y1);

        if (cpx2 == null || cpy2 == null) {
            if (percent < 1) {
                quadraticSubdivide(
                    x1, cpx1, x2, percent, out
                );
                cpx1 = out[1];
                x2 = out[2];
                quadraticSubdivide(
                    y1, cpy1, y2, percent, out
                );
                cpy1 = out[1];
                y2 = out[2];
            }

            ctx.quadraticCurveTo(
                cpx1, cpy1,
                x2, y2
            );
        }
        else {
            if (percent < 1) {
                cubicSubdivide(
                    x1, cpx1, cpx2, x2, percent, out
                );
                cpx1 = out[1];
                cpx2 = out[2];
                x2 = out[3];
                cubicSubdivide(
                    y1, cpy1, cpy2, y2, percent, out
                );
                cpy1 = out[1];
                cpy2 = out[2];
                y2 = out[3];
            }
            ctx.bezierCurveTo(
                cpx1, cpy1,
                cpx2, cpy2,
                x2, y2
            );
        }
    },

    /**
     * Get point at percent
     * @param  {number} t
     * @return {Array.<number>}
     */
    pointAt: function (t) {
        return someVectorAt(this.shape, t, false);
    },

    /**
     * Get tangent at percent
     * @param  {number} t
     * @return {Array.<number>}
     */
    tangentAt: function (t) {
        var p = someVectorAt(this.shape, t, true);
        return normalize(p, p);
    }
});

/**
 * 圆弧
 * @module zrender/graphic/shape/Arc
 */

var Arc = Path.extend({

    type: 'arc',

    shape: {

        cx: 0,

        cy: 0,

        r: 0,

        startAngle: 0,

        endAngle: Math.PI * 2,

        clockwise: true
    },

    style: {

        stroke: '#000',

        fill: null
    },

    buildPath: function (ctx, shape) {

        var x = shape.cx;
        var y = shape.cy;
        var r = Math.max(shape.r, 0);
        var startAngle = shape.startAngle;
        var endAngle = shape.endAngle;
        var clockwise = shape.clockwise;

        var unitX = Math.cos(startAngle);
        var unitY = Math.sin(startAngle);

        ctx.moveTo(unitX * r + x, unitY * r + y);
        ctx.arc(x, y, r, startAngle, endAngle, !clockwise);
    }
});

// CompoundPath to improve performance

var CompoundPath = Path.extend({

    type: 'compound',

    shape: {

        paths: null
    },

    _updatePathDirty: function () {
        var dirtyPath = this.__dirtyPath;
        var paths = this.shape.paths;
        for (var i = 0; i < paths.length; i++) {
            // Mark as dirty if any subpath is dirty
            dirtyPath = dirtyPath || paths[i].__dirtyPath;
        }
        this.__dirtyPath = dirtyPath;
        this.__dirty = this.__dirty || dirtyPath;
    },

    beforeBrush: function () {
        this._updatePathDirty();
        var paths = this.shape.paths || [];
        var scale = this.getGlobalScale();
        // Update path scale
        for (var i = 0; i < paths.length; i++) {
            if (!paths[i].path) {
                paths[i].createPathProxy();
            }
            paths[i].path.setScale(scale[0], scale[1]);
        }
    },

    buildPath: function (ctx, shape) {
        var paths = shape.paths || [];
        for (var i = 0; i < paths.length; i++) {
            paths[i].buildPath(ctx, paths[i].shape, true);
        }
    },

    afterBrush: function () {
        var paths = this.shape.paths || [];
        for (var i = 0; i < paths.length; i++) {
            paths[i].__dirtyPath = false;
        }
    },

    getBoundingRect: function () {
        this._updatePathDirty();
        return Path.prototype.getBoundingRect.call(this);
    }
});

/**
 * @param {Array.<Object>} colorStops
 */
var Gradient = function (colorStops) {

    this.colorStops = colorStops || [];

};

Gradient.prototype = {

    constructor: Gradient,

    addColorStop: function (offset, color) {
        this.colorStops.push({

            offset: offset,

            color: color
        });
    }

};

/**
 * x, y, x2, y2 are all percent from 0 to 1
 * @param {number} [x=0]
 * @param {number} [y=0]
 * @param {number} [x2=1]
 * @param {number} [y2=0]
 * @param {Array.<Object>} colorStops
 * @param {boolean} [globalCoord=false]
 */
var LinearGradient = function (x, y, x2, y2, colorStops, globalCoord) {
    // Should do nothing more in this constructor. Because gradient can be
    // declard by `color: {type: 'linear', colorStops: ...}`, where
    // this constructor will not be called.

    this.x = x == null ? 0 : x;

    this.y = y == null ? 0 : y;

    this.x2 = x2 == null ? 1 : x2;

    this.y2 = y2 == null ? 0 : y2;

    // Can be cloned
    this.type = 'linear';

    // If use global coord
    this.global = globalCoord || false;

    Gradient.call(this, colorStops);
};

LinearGradient.prototype = {

    constructor: LinearGradient
};

inherits(LinearGradient, Gradient);

/**
 * x, y, r are all percent from 0 to 1
 * @param {number} [x=0.5]
 * @param {number} [y=0.5]
 * @param {number} [r=0.5]
 * @param {Array.<Object>} [colorStops]
 * @param {boolean} [globalCoord=false]
 */
var RadialGradient = function (x, y, r, colorStops, globalCoord) {
    // Should do nothing more in this constructor. Because gradient can be
    // declard by `color: {type: 'radial', colorStops: ...}`, where
    // this constructor will not be called.

    this.x = x == null ? 0.5 : x;

    this.y = y == null ? 0.5 : y;

    this.r = r == null ? 0.5 : r;

    // Can be cloned
    this.type = 'radial';

    // If use global coord
    this.global = globalCoord || false;

    Gradient.call(this, colorStops);
};

RadialGradient.prototype = {

    constructor: RadialGradient
};

inherits(RadialGradient, Gradient);

/**
 * Displayable for incremental rendering. It will be rendered in a separate layer
 * IncrementalDisplay have too main methods. `clearDisplayables` and `addDisplayables`
 * addDisplayables will render the added displayables incremetally.
 *
 * It use a not clearFlag to tell the painter don't clear the layer if it's the first element.
 */
// TODO Style override ?
function IncrementalDisplayble(opts) {

    Displayable.call(this, opts);

    this._displayables = [];

    this._temporaryDisplayables = [];

    this._cursor = 0;

    this.notClear = true;
}

IncrementalDisplayble.prototype.incremental = true;

IncrementalDisplayble.prototype.clearDisplaybles = function () {
    this._displayables = [];
    this._temporaryDisplayables = [];
    this._cursor = 0;
    this.dirty();

    this.notClear = false;
};

IncrementalDisplayble.prototype.addDisplayable = function (displayable, notPersistent) {
    if (notPersistent) {
        this._temporaryDisplayables.push(displayable);
    }
    else {
        this._displayables.push(displayable);
    }
    this.dirty();
};

IncrementalDisplayble.prototype.addDisplayables = function (displayables, notPersistent) {
    notPersistent = notPersistent || false;
    for (var i = 0; i < displayables.length; i++) {
        this.addDisplayable(displayables[i], notPersistent);
    }
};

IncrementalDisplayble.prototype.eachPendingDisplayable = function  (cb) {
    for (var i = this._cursor; i < this._displayables.length; i++) {
        cb && cb(this._displayables[i]);
    }
    for (var i = 0; i < this._temporaryDisplayables.length; i++) {
        cb && cb(this._temporaryDisplayables[i]);
    }
};

IncrementalDisplayble.prototype.update = function () {
    this.updateTransform();
    for (var i = this._cursor; i < this._displayables.length; i++) {
        var displayable = this._displayables[i];
        // PENDING
        displayable.parent = this;
        displayable.update();
        displayable.parent = null;
    }
    for (var i = 0; i < this._temporaryDisplayables.length; i++) {
        var displayable = this._temporaryDisplayables[i];
        // PENDING
        displayable.parent = this;
        displayable.update();
        displayable.parent = null;
    }
};

IncrementalDisplayble.prototype.brush = function (ctx, prevEl) {
    // Render persistant displayables.
    for (var i = this._cursor; i < this._displayables.length; i++) {
        var displayable = this._temporaryDisplayables[i];
        displayable.beforeBrush && displayable.beforeBrush(ctx);
        displayable.brush(ctx, i === this._cursor ? null : this._displayables[i - 1]);
        displayable.afterBrush && displayable.afterBrush(ctx);
    }
    this._cursor = i;
    // Render temporary displayables.
    for (var i = 0; i < this._temporaryDisplayables.length; i++) {
        var displayable = this._temporaryDisplayables[i];
        displayable.beforeBrush && displayable.beforeBrush(ctx);
        displayable.brush(ctx, i === 0 ? null : this._temporaryDisplayables[i - 1]);
        displayable.afterBrush && displayable.afterBrush(ctx);
    }

    this._temporaryDisplayables = [];

    this.notClear = true;
};

var m = [];
IncrementalDisplayble.prototype.getBoundingRect = function () {
    if (!this._rect) {
        var rect = new BoundingRect(Infinity, Infinity, -Infinity, -Infinity);
        for (var i = 0; i < this._displayables.length; i++) {
            var displayable = this._displayables[i];
            var childRect = displayable.getBoundingRect().clone();
            if (displayable.needLocalTransform()) {
                childRect.applyTransform(displayable.getLocalTransform(m));
            }
            rect.union(childRect);
        }
        this._rect = rect;
    }
    return this._rect;
};

IncrementalDisplayble.prototype.contain = function (x, y) {
    var localPos = this.transformCoordToLocal(x, y);
    var rect = this.getBoundingRect();

    if (rect.contain(localPos[0], localPos[1])) {
        for (var i = 0; i < this._displayables.length; i++) {
            var displayable = this._displayables[i];
            if (displayable.contain(x, y)) {
                return true;
            }
        }
    }
    return false;
};

inherits(IncrementalDisplayble, Displayable);

var round = Math.round;
var mathMax$1 = Math.max;
var mathMin$1 = Math.min;

var EMPTY_OBJ = {};

/**
 * Extend shape with parameters
 */
function extendShape(opts) {
    return Path.extend(opts);
}

/**
 * Extend path
 */
function extendPath(pathData, opts) {
    return extendFromString(pathData, opts);
}

/**
 * Create a path element from path data string
 * @param {string} pathData
 * @param {Object} opts
 * @param {module:zrender/core/BoundingRect} rect
 * @param {string} [layout=cover] 'center' or 'cover'
 */
function makePath(pathData, opts, rect, layout) {
    var path = createFromString(pathData, opts);
    var boundingRect = path.getBoundingRect();
    if (rect) {
        if (layout === 'center') {
            rect = centerGraphic(rect, boundingRect);
        }

        resizePath(path, rect);
    }
    return path;
}

/**
 * Create a image element from image url
 * @param {string} imageUrl image url
 * @param {Object} opts options
 * @param {module:zrender/core/BoundingRect} rect constrain rect
 * @param {string} [layout=cover] 'center' or 'cover'
 */
function makeImage(imageUrl, rect, layout) {
    var path = new ZImage({
        style: {
            image: imageUrl,
            x: rect.x,
            y: rect.y,
            width: rect.width,
            height: rect.height
        },
        onload: function (img) {
            if (layout === 'center') {
                var boundingRect = {
                    width: img.width,
                    height: img.height
                };
                path.setStyle(centerGraphic(rect, boundingRect));
            }
        }
    });
    return path;
}

/**
 * Get position of centered element in bounding box.
 *
 * @param  {Object} rect         element local bounding box
 * @param  {Object} boundingRect constraint bounding box
 * @return {Object} element position containing x, y, width, and height
 */
function centerGraphic(rect, boundingRect) {
    // Set rect to center, keep width / height ratio.
    var aspect = boundingRect.width / boundingRect.height;
    var width = rect.height * aspect;
    var height;
    if (width <= rect.width) {
        height = rect.height;
    }
    else {
        width = rect.width;
        height = width / aspect;
    }
    var cx = rect.x + rect.width / 2;
    var cy = rect.y + rect.height / 2;

    return {
        x: cx - width / 2,
        y: cy - height / 2,
        width: width,
        height: height
    };
}

var mergePath = mergePath$1;

/**
 * Resize a path to fit the rect
 * @param {module:zrender/graphic/Path} path
 * @param {Object} rect
 */
function resizePath(path, rect) {
    if (!path.applyTransform) {
        return;
    }

    var pathRect = path.getBoundingRect();

    var m = pathRect.calculateTransform(rect);

    path.applyTransform(m);
}

/**
 * Sub pixel optimize line for canvas
 *
 * @param {Object} param
 * @param {Object} [param.shape]
 * @param {number} [param.shape.x1]
 * @param {number} [param.shape.y1]
 * @param {number} [param.shape.x2]
 * @param {number} [param.shape.y2]
 * @param {Object} [param.style]
 * @param {number} [param.style.lineWidth]
 * @return {Object} Modified param
 */
function subPixelOptimizeLine(param) {
    var shape = param.shape;
    var lineWidth = param.style.lineWidth;

    if (round(shape.x1 * 2) === round(shape.x2 * 2)) {
        shape.x1 = shape.x2 = subPixelOptimize(shape.x1, lineWidth, true);
    }
    if (round(shape.y1 * 2) === round(shape.y2 * 2)) {
        shape.y1 = shape.y2 = subPixelOptimize(shape.y1, lineWidth, true);
    }
    return param;
}

/**
 * Sub pixel optimize rect for canvas
 *
 * @param {Object} param
 * @param {Object} [param.shape]
 * @param {number} [param.shape.x]
 * @param {number} [param.shape.y]
 * @param {number} [param.shape.width]
 * @param {number} [param.shape.height]
 * @param {Object} [param.style]
 * @param {number} [param.style.lineWidth]
 * @return {Object} Modified param
 */
function subPixelOptimizeRect(param) {
    var shape = param.shape;
    var lineWidth = param.style.lineWidth;
    var originX = shape.x;
    var originY = shape.y;
    var originWidth = shape.width;
    var originHeight = shape.height;
    shape.x = subPixelOptimize(shape.x, lineWidth, true);
    shape.y = subPixelOptimize(shape.y, lineWidth, true);
    shape.width = Math.max(
        subPixelOptimize(originX + originWidth, lineWidth, false) - shape.x,
        originWidth === 0 ? 0 : 1
    );
    shape.height = Math.max(
        subPixelOptimize(originY + originHeight, lineWidth, false) - shape.y,
        originHeight === 0 ? 0 : 1
    );
    return param;
}

/**
 * Sub pixel optimize for canvas
 *
 * @param {number} position Coordinate, such as x, y
 * @param {number} lineWidth Should be nonnegative integer.
 * @param {boolean=} positiveOrNegative Default false (negative).
 * @return {number} Optimized position.
 */
function subPixelOptimize(position, lineWidth, positiveOrNegative) {
    // Assure that (position + lineWidth / 2) is near integer edge,
    // otherwise line will be fuzzy in canvas.
    var doubledPosition = round(position * 2);
    return (doubledPosition + round(lineWidth)) % 2 === 0
        ? doubledPosition / 2
        : (doubledPosition + (positiveOrNegative ? 1 : -1)) / 2;
}

function hasFillOrStroke(fillOrStroke) {
    return fillOrStroke != null && fillOrStroke != 'none';
}

function liftColor(color) {
    return typeof color === 'string' ? lift(color, -0.1) : color;
}

/**
 * @private
 */
function cacheElementStl(el) {
    if (el.__hoverStlDirty) {
        var stroke = el.style.stroke;
        var fill = el.style.fill;

        // Create hoverStyle on mouseover
        var hoverStyle = el.__hoverStl;
        hoverStyle.fill = hoverStyle.fill
            || (hasFillOrStroke(fill) ? liftColor(fill) : null);
        hoverStyle.stroke = hoverStyle.stroke
            || (hasFillOrStroke(stroke) ? liftColor(stroke) : null);

        var normalStyle = {};
        for (var name in hoverStyle) {
            // See comment in `doSingleEnterHover`.
            if (hoverStyle[name] != null) {
                normalStyle[name] = el.style[name];
            }
        }

        el.__normalStl = normalStyle;

        el.__hoverStlDirty = false;
    }
}

/**
 * @private
 */
function doSingleEnterHover(el) {
    if (el.__isHover) {
        return;
    }

    cacheElementStl(el);

    if (el.useHoverLayer) {
        el.__zr && el.__zr.addHover(el, el.__hoverStl);
    }
    else {
        var style = el.style;
        var insideRollbackOpt = style.insideRollbackOpt;

        // Consider case: only `position: 'top'` is set on emphasis, then text
        // color should be returned to `autoColor`, rather than remain '#fff'.
        // So we should rollback then apply again after style merging.
        insideRollbackOpt && rollbackInsideStyle(style);

        // styles can be:
        // {
        //    label: {
        //        show: false,
        //        position: 'outside',
        //        fontSize: 18
        //    },
        //    emphasis: {
        //        label: {
        //            show: true
        //        }
        //    }
        // },
        // where properties of `emphasis` may not appear in `normal`. We previously use
        // module:echarts/util/model#defaultEmphasis to merge `normal` to `emphasis`.
        // But consider rich text and setOption in merge mode, it is impossible to cover
        // all properties in merge. So we use merge mode when setting style here, where
        // only properties that is not `null/undefined` can be set. The disadventage:
        // null/undefined can not be used to remove style any more in `emphasis`.
        style.extendFrom(el.__hoverStl);

        // Do not save `insideRollback`.
        if (insideRollbackOpt) {
            applyInsideStyle(style, style.insideOriginalTextPosition, insideRollbackOpt);

            // textFill may be rollbacked to null.
            if (style.textFill == null) {
                style.textFill = insideRollbackOpt.autoColor;
            }
        }

        el.dirty(false);
        el.z2 += 1;
    }

    el.__isHover = true;
}

/**
 * @inner
 */
function doSingleLeaveHover(el) {
    if (!el.__isHover) {
        return;
    }

    var normalStl = el.__normalStl;
    if (el.useHoverLayer) {
        el.__zr && el.__zr.removeHover(el);
    }
    else {
        // Consider null/undefined value, should use
        // `setStyle` but not `extendFrom(stl, true)`.
        normalStl && el.setStyle(normalStl);
        el.z2 -= 1;
    }

    el.__isHover = false;
}

/**
 * @inner
 */
function doEnterHover(el) {
    el.type === 'group'
        ? el.traverse(function (child) {
            if (child.type !== 'group') {
                doSingleEnterHover(child);
            }
        })
        : doSingleEnterHover(el);
}

function doLeaveHover(el) {
    el.type === 'group'
        ? el.traverse(function (child) {
            if (child.type !== 'group') {
                doSingleLeaveHover(child);
            }
        })
        : doSingleLeaveHover(el);
}

/**
 * @inner
 */
function setElementHoverStl(el, hoverStl) {
    // If element has sepcified hoverStyle, then use it instead of given hoverStyle
    // Often used when item group has a label element and it's hoverStyle is different
    el.__hoverStl = el.hoverStyle || hoverStl || {};
    el.__hoverStlDirty = true;

    if (el.__isHover) {
        cacheElementStl(el);
    }
}

/**
 * @inner
 */
function onElementMouseOver(e) {
    if (this.__hoverSilentOnTouch && e.zrByTouch) {
        return;
    }

    // Only if element is not in emphasis status
    !this.__isEmphasis && doEnterHover(this);
}

/**
 * @inner
 */
function onElementMouseOut(e) {
    if (this.__hoverSilentOnTouch && e.zrByTouch) {
        return;
    }

    // Only if element is not in emphasis status
    !this.__isEmphasis && doLeaveHover(this);
}

/**
 * @inner
 */
function enterEmphasis() {
    this.__isEmphasis = true;
    doEnterHover(this);
}

/**
 * @inner
 */
function leaveEmphasis() {
    this.__isEmphasis = false;
    doLeaveHover(this);
}

/**
 * Set hover style of element.
 * This method can be called repeatly without side-effects.
 * @param {module:zrender/Element} el
 * @param {Object} [hoverStyle]
 * @param {Object} [opt]
 * @param {boolean} [opt.hoverSilentOnTouch=false]
 *        In touch device, mouseover event will be trigger on touchstart event
 *        (see module:zrender/dom/HandlerProxy). By this mechanism, we can
 *        conviniently use hoverStyle when tap on touch screen without additional
 *        code for compatibility.
 *        But if the chart/component has select feature, which usually also use
 *        hoverStyle, there might be conflict between 'select-highlight' and
 *        'hover-highlight' especially when roam is enabled (see geo for example).
 *        In this case, hoverSilentOnTouch should be used to disable hover-highlight
 *        on touch device.
 */
function setHoverStyle(el, hoverStyle, opt) {
    el.__hoverSilentOnTouch = opt && opt.hoverSilentOnTouch;

    el.type === 'group'
        ? el.traverse(function (child) {
            if (child.type !== 'group') {
                setElementHoverStl(child, hoverStyle);
            }
        })
        : setElementHoverStl(el, hoverStyle);

    // Duplicated function will be auto-ignored, see Eventful.js.
    el.on('mouseover', onElementMouseOver)
        .on('mouseout', onElementMouseOut);

    // Emphasis, normal can be triggered manually
    el.on('emphasis', enterEmphasis)
        .on('normal', leaveEmphasis);
}

/**
 * @param {Object|module:zrender/graphic/Style} normalStyle
 * @param {Object} emphasisStyle
 * @param {module:echarts/model/Model} normalModel
 * @param {module:echarts/model/Model} emphasisModel
 * @param {Object} opt Check `opt` of `setTextStyleCommon` to find other props.
 * @param {string|Function} [opt.defaultText]
 * @param {module:echarts/model/Model} [opt.labelFetcher] Fetch text by
 *      `opt.labelFetcher.getFormattedLabel(opt.labelDataIndex, 'normal'/'emphasis', null, opt.labelDimIndex)`
 * @param {module:echarts/model/Model} [opt.labelDataIndex] Fetch text by
 *      `opt.textFetcher.getFormattedLabel(opt.labelDataIndex, 'normal'/'emphasis', null, opt.labelDimIndex)`
 * @param {module:echarts/model/Model} [opt.labelDimIndex] Fetch text by
 *      `opt.textFetcher.getFormattedLabel(opt.labelDataIndex, 'normal'/'emphasis', null, opt.labelDimIndex)`
 * @param {Object} [normalSpecified]
 * @param {Object} [emphasisSpecified]
 */
function setLabelStyle(
    normalStyle, emphasisStyle,
    normalModel, emphasisModel,
    opt,
    normalSpecified, emphasisSpecified
) {
    opt = opt || EMPTY_OBJ;
    var labelFetcher = opt.labelFetcher;
    var labelDataIndex = opt.labelDataIndex;
    var labelDimIndex = opt.labelDimIndex;

    // This scenario, `label.normal.show = true; label.emphasis.show = false`,
    // is not supported util someone requests.

    var showNormal = normalModel.getShallow('show');
    var showEmphasis = emphasisModel.getShallow('show');

    // Consider performance, only fetch label when necessary.
    // If `normal.show` is `false` and `emphasis.show` is `true` and `emphasis.formatter` is not set,
    // label should be displayed, where text is fetched by `normal.formatter` or `opt.defaultText`.
    var baseText;
    if (showNormal || showEmphasis) {
        if (labelFetcher) {
            baseText = labelFetcher.getFormattedLabel(labelDataIndex, 'normal', null, labelDimIndex);
        }
        if (baseText == null) {
            baseText = isFunction$1(opt.defaultText) ? opt.defaultText(labelDataIndex, opt) : opt.defaultText;
        }
    }
    var normalStyleText = showNormal ? baseText : null;
    var emphasisStyleText = showEmphasis
        ? retrieve2(
            labelFetcher
                ? labelFetcher.getFormattedLabel(labelDataIndex, 'emphasis', null, labelDimIndex)
                : null,
            baseText
        )
        : null;

    // Optimize: If style.text is null, text will not be drawn.
    if (normalStyleText != null || emphasisStyleText != null) {
        // Always set `textStyle` even if `normalStyle.text` is null, because default
        // values have to be set on `normalStyle`.
        // If we set default values on `emphasisStyle`, consider case:
        // Firstly, `setOption(... label: {normal: {text: null}, emphasis: {show: true}} ...);`
        // Secondly, `setOption(... label: {noraml: {show: true, text: 'abc', color: 'red'} ...);`
        // Then the 'red' will not work on emphasis.
        setTextStyle(normalStyle, normalModel, normalSpecified, opt);
        setTextStyle(emphasisStyle, emphasisModel, emphasisSpecified, opt, true);
    }

    normalStyle.text = normalStyleText;
    emphasisStyle.text = emphasisStyleText;
}

/**
 * Set basic textStyle properties.
 * @param {Object|module:zrender/graphic/Style} textStyle
 * @param {module:echarts/model/Model} model
 * @param {Object} [specifiedTextStyle] Can be overrided by settings in model.
 * @param {Object} [opt] See `opt` of `setTextStyleCommon`.
 * @param {boolean} [isEmphasis]
 */
function setTextStyle(
    textStyle, textStyleModel, specifiedTextStyle, opt, isEmphasis
) {
    setTextStyleCommon(textStyle, textStyleModel, opt, isEmphasis);
    specifiedTextStyle && extend(textStyle, specifiedTextStyle);
    textStyle.host && textStyle.host.dirty && textStyle.host.dirty(false);

    return textStyle;
}

/**
 * Set text option in the style.
 * @deprecated
 * @param {Object} textStyle
 * @param {module:echarts/model/Model} labelModel
 * @param {string|boolean} defaultColor Default text color.
 *        If set as false, it will be processed as a emphasis style.
 */
function setText(textStyle, labelModel, defaultColor) {
    var opt = {isRectText: true};
    var isEmphasis;

    if (defaultColor === false) {
        isEmphasis = true;
    }
    else {
        // Support setting color as 'auto' to get visual color.
        opt.autoColor = defaultColor;
    }
    setTextStyleCommon(textStyle, labelModel, opt, isEmphasis);
    textStyle.host && textStyle.host.dirty && textStyle.host.dirty(false);
}

/**
 * {
 *      disableBox: boolean, Whether diable drawing box of block (outer most).
 *      isRectText: boolean,
 *      autoColor: string, specify a color when color is 'auto',
 *              for textFill, textStroke, textBackgroundColor, and textBorderColor.
 *              If autoColor specified, it is used as default textFill.
 *      useInsideStyle:
 *              `true`: Use inside style (textFill, textStroke, textStrokeWidth)
 *                  if `textFill` is not specified.
 *              `false`: Do not use inside style.
 *              `null/undefined`: use inside style if `isRectText` is true and
 *                  `textFill` is not specified and textPosition contains `'inside'`.
 *      forceRich: boolean
 * }
 */
function setTextStyleCommon(textStyle, textStyleModel, opt, isEmphasis) {
    // Consider there will be abnormal when merge hover style to normal style if given default value.
    opt = opt || EMPTY_OBJ;

    if (opt.isRectText) {
        var textPosition = textStyleModel.getShallow('position')
            || (isEmphasis ? null : 'inside');
        // 'outside' is not a valid zr textPostion value, but used
        // in bar series, and magric type should be considered.
        textPosition === 'outside' && (textPosition = 'top');
        textStyle.textPosition = textPosition;
        textStyle.textOffset = textStyleModel.getShallow('offset');
        var labelRotate = textStyleModel.getShallow('rotate');
        labelRotate != null && (labelRotate *= Math.PI / 180);
        textStyle.textRotation = labelRotate;
        textStyle.textDistance = retrieve2(
            textStyleModel.getShallow('distance'), isEmphasis ? null : 5
        );
    }

    var ecModel = textStyleModel.ecModel;
    var globalTextStyle = ecModel && ecModel.option.textStyle;

    // Consider case:
    // {
    //     data: [{
    //         value: 12,
    //         label: {
    //             rich: {
    //                 // no 'a' here but using parent 'a'.
    //             }
    //         }
    //     }],
    //     rich: {
    //         a: { ... }
    //     }
    // }
    var richItemNames = getRichItemNames(textStyleModel);
    var richResult;
    if (richItemNames) {
        richResult = {};
        for (var name in richItemNames) {
            if (richItemNames.hasOwnProperty(name)) {
                // Cascade is supported in rich.
                var richTextStyle = textStyleModel.getModel(['rich', name]);
                // In rich, never `disableBox`.
                setTokenTextStyle(richResult[name] = {}, richTextStyle, globalTextStyle, opt, isEmphasis);
            }
        }
    }
    textStyle.rich = richResult;

    setTokenTextStyle(textStyle, textStyleModel, globalTextStyle, opt, isEmphasis, true);

    if (opt.forceRich && !opt.textStyle) {
        opt.textStyle = {};
    }

    return textStyle;
}

// Consider case:
// {
//     data: [{
//         value: 12,
//         label: {
//             rich: {
//                 // no 'a' here but using parent 'a'.
//             }
//         }
//     }],
//     rich: {
//         a: { ... }
//     }
// }
function getRichItemNames(textStyleModel) {
    // Use object to remove duplicated names.
    var richItemNameMap;
    while (textStyleModel && textStyleModel !== textStyleModel.ecModel) {
        var rich = (textStyleModel.option || EMPTY_OBJ).rich;
        if (rich) {
            richItemNameMap = richItemNameMap || {};
            for (var name in rich) {
                if (rich.hasOwnProperty(name)) {
                    richItemNameMap[name] = 1;
                }
            }
        }
        textStyleModel = textStyleModel.parentModel;
    }
    return richItemNameMap;
}

function setTokenTextStyle(textStyle, textStyleModel, globalTextStyle, opt, isEmphasis, isBlock) {
    // In merge mode, default value should not be given.
    globalTextStyle = !isEmphasis && globalTextStyle || EMPTY_OBJ;

    textStyle.textFill = getAutoColor(textStyleModel.getShallow('color'), opt)
        || globalTextStyle.color;
    textStyle.textStroke = getAutoColor(textStyleModel.getShallow('textBorderColor'), opt)
        || globalTextStyle.textBorderColor;
    textStyle.textStrokeWidth = retrieve2(
        textStyleModel.getShallow('textBorderWidth'),
        globalTextStyle.textBorderWidth
    );

    if (!isEmphasis) {
        if (isBlock) {
            // Always set `insideRollback`, for clearing previous.
            var originalTextPosition = textStyle.textPosition;
            textStyle.insideRollback = applyInsideStyle(textStyle, originalTextPosition, opt);
            // Save original textPosition, because style.textPosition will be repalced by
            // real location (like [10, 30]) in zrender.
            textStyle.insideOriginalTextPosition = originalTextPosition;
            textStyle.insideRollbackOpt = opt;
        }

        // Set default finally.
        if (textStyle.textFill == null) {
            textStyle.textFill = opt.autoColor;
        }
    }

    // Do not use `getFont` here, because merge should be supported, where
    // part of these properties may be changed in emphasis style, and the
    // others should remain their original value got from normal style.
    textStyle.fontStyle = textStyleModel.getShallow('fontStyle') || globalTextStyle.fontStyle;
    textStyle.fontWeight = textStyleModel.getShallow('fontWeight') || globalTextStyle.fontWeight;
    textStyle.fontSize = textStyleModel.getShallow('fontSize') || globalTextStyle.fontSize;
    textStyle.fontFamily = textStyleModel.getShallow('fontFamily') || globalTextStyle.fontFamily;

    textStyle.textAlign = textStyleModel.getShallow('align');
    textStyle.textVerticalAlign = textStyleModel.getShallow('verticalAlign')
        || textStyleModel.getShallow('baseline');

    textStyle.textLineHeight = textStyleModel.getShallow('lineHeight');
    textStyle.textWidth = textStyleModel.getShallow('width');
    textStyle.textHeight = textStyleModel.getShallow('height');
    textStyle.textTag = textStyleModel.getShallow('tag');

    if (!isBlock || !opt.disableBox) {
        textStyle.textBackgroundColor = getAutoColor(textStyleModel.getShallow('backgroundColor'), opt);
        textStyle.textPadding = textStyleModel.getShallow('padding');
        textStyle.textBorderColor = getAutoColor(textStyleModel.getShallow('borderColor'), opt);
        textStyle.textBorderWidth = textStyleModel.getShallow('borderWidth');
        textStyle.textBorderRadius = textStyleModel.getShallow('borderRadius');

        textStyle.textBoxShadowColor = textStyleModel.getShallow('shadowColor');
        textStyle.textBoxShadowBlur = textStyleModel.getShallow('shadowBlur');
        textStyle.textBoxShadowOffsetX = textStyleModel.getShallow('shadowOffsetX');
        textStyle.textBoxShadowOffsetY = textStyleModel.getShallow('shadowOffsetY');
    }

    textStyle.textShadowColor = textStyleModel.getShallow('textShadowColor')
        || globalTextStyle.textShadowColor;
    textStyle.textShadowBlur = textStyleModel.getShallow('textShadowBlur')
        || globalTextStyle.textShadowBlur;
    textStyle.textShadowOffsetX = textStyleModel.getShallow('textShadowOffsetX')
        || globalTextStyle.textShadowOffsetX;
    textStyle.textShadowOffsetY = textStyleModel.getShallow('textShadowOffsetY')
        || globalTextStyle.textShadowOffsetY;
}

function getAutoColor(color, opt) {
    return color !== 'auto' ? color : (opt && opt.autoColor) ? opt.autoColor : null;
}

function applyInsideStyle(textStyle, textPosition, opt) {
    var useInsideStyle = opt.useInsideStyle;
    var insideRollback;

    if (textStyle.textFill == null
        && useInsideStyle !== false
        && (useInsideStyle === true
            || (opt.isRectText
                && textPosition
                // textPosition can be [10, 30]
                && typeof textPosition === 'string'
                && textPosition.indexOf('inside') >= 0
            )
        )
    ) {
        insideRollback = {
            textFill: null,
            textStroke: textStyle.textStroke,
            textStrokeWidth: textStyle.textStrokeWidth
        };
        textStyle.textFill = '#fff';
        // Consider text with #fff overflow its container.
        if (textStyle.textStroke == null) {
            textStyle.textStroke = opt.autoColor;
            textStyle.textStrokeWidth == null && (textStyle.textStrokeWidth = 2);
        }
    }

    return insideRollback;
}

function rollbackInsideStyle(style) {
    var insideRollback = style.insideRollback;
    if (insideRollback) {
        style.textFill = insideRollback.textFill;
        style.textStroke = insideRollback.textStroke;
        style.textStrokeWidth = insideRollback.textStrokeWidth;
    }
}

function getFont(opt, ecModel) {
    // ecModel or default text style model.
    var gTextStyleModel = ecModel || ecModel.getModel('textStyle');
    return trim([
        // FIXME in node-canvas fontWeight is before fontStyle
        opt.fontStyle || gTextStyleModel && gTextStyleModel.getShallow('fontStyle') || '',
        opt.fontWeight || gTextStyleModel && gTextStyleModel.getShallow('fontWeight') || '',
        (opt.fontSize || gTextStyleModel && gTextStyleModel.getShallow('fontSize') || 12) + 'px',
        opt.fontFamily || gTextStyleModel && gTextStyleModel.getShallow('fontFamily') || 'sans-serif'
    ].join(' '));
}

function animateOrSetProps(isUpdate, el, props, animatableModel, dataIndex, cb) {
    if (typeof dataIndex === 'function') {
        cb = dataIndex;
        dataIndex = null;
    }
    // Do not check 'animation' property directly here. Consider this case:
    // animation model is an `itemModel`, whose does not have `isAnimationEnabled`
    // but its parent model (`seriesModel`) does.
    var animationEnabled = animatableModel && animatableModel.isAnimationEnabled();

    if (animationEnabled) {
        var postfix = isUpdate ? 'Update' : '';
        var duration = animatableModel.getShallow('animationDuration' + postfix);
        var animationEasing = animatableModel.getShallow('animationEasing' + postfix);
        var animationDelay = animatableModel.getShallow('animationDelay' + postfix);
        if (typeof animationDelay === 'function') {
            animationDelay = animationDelay(
                dataIndex,
                animatableModel.getAnimationDelayParams
                    ? animatableModel.getAnimationDelayParams(el, dataIndex)
                    : null
            );
        }
        if (typeof duration === 'function') {
            duration = duration(dataIndex);
        }

        duration > 0
            ? el.animateTo(props, duration, animationDelay || 0, animationEasing, cb, !!cb)
            : (el.stopAnimation(), el.attr(props), cb && cb());
    }
    else {
        el.stopAnimation();
        el.attr(props);
        cb && cb();
    }
}

/**
 * Update graphic element properties with or without animation according to the
 * configuration in series.
 *
 * Caution: this method will stop previous animation.
 * So if do not use this method to one element twice before
 * animation starts, unless you know what you are doing.
 *
 * @param {module:zrender/Element} el
 * @param {Object} props
 * @param {module:echarts/model/Model} [animatableModel]
 * @param {number} [dataIndex]
 * @param {Function} [cb]
 * @example
 *     graphic.updateProps(el, {
 *         position: [100, 100]
 *     }, seriesModel, dataIndex, function () { console.log('Animation done!'); });
 *     // Or
 *     graphic.updateProps(el, {
 *         position: [100, 100]
 *     }, seriesModel, function () { console.log('Animation done!'); });
 */
function updateProps(el, props, animatableModel, dataIndex, cb) {
    animateOrSetProps(true, el, props, animatableModel, dataIndex, cb);
}

/**
 * Init graphic element properties with or without animation according to the
 * configuration in series.
 *
 * Caution: this method will stop previous animation.
 * So if do not use this method to one element twice before
 * animation starts, unless you know what you are doing.
 *
 * @param {module:zrender/Element} el
 * @param {Object} props
 * @param {module:echarts/model/Model} [animatableModel]
 * @param {number} [dataIndex]
 * @param {Function} cb
 */
function initProps(el, props, animatableModel, dataIndex, cb) {
    animateOrSetProps(false, el, props, animatableModel, dataIndex, cb);
}

/**
 * Get transform matrix of target (param target),
 * in coordinate of its ancestor (param ancestor)
 *
 * @param {module:zrender/mixin/Transformable} target
 * @param {module:zrender/mixin/Transformable} [ancestor]
 */
function getTransform(target, ancestor) {
    var mat = identity([]);

    while (target && target !== ancestor) {
        mul$1(mat, target.getLocalTransform(), mat);
        target = target.parent;
    }

    return mat;
}

/**
 * Apply transform to an vertex.
 * @param {Array.<number>} target [x, y]
 * @param {Array.<number>|TypedArray.<number>|Object} transform Can be:
 *      + Transform matrix: like [1, 0, 0, 1, 0, 0]
 *      + {position, rotation, scale}, the same as `zrender/Transformable`.
 * @param {boolean=} invert Whether use invert matrix.
 * @return {Array.<number>} [x, y]
 */
function applyTransform$1(target, transform, invert$$1) {
    if (transform && !isArrayLike(transform)) {
        transform = Transformable.getLocalTransform(transform);
    }

    if (invert$$1) {
        transform = invert([], transform);
    }
    return applyTransform([], target, transform);
}

/**
 * @param {string} direction 'left' 'right' 'top' 'bottom'
 * @param {Array.<number>} transform Transform matrix: like [1, 0, 0, 1, 0, 0]
 * @param {boolean=} invert Whether use invert matrix.
 * @return {string} Transformed direction. 'left' 'right' 'top' 'bottom'
 */
function transformDirection(direction, transform, invert$$1) {

    // Pick a base, ensure that transform result will not be (0, 0).
    var hBase = (transform[4] === 0 || transform[5] === 0 || transform[0] === 0)
        ? 1 : Math.abs(2 * transform[4] / transform[0]);
    var vBase = (transform[4] === 0 || transform[5] === 0 || transform[2] === 0)
        ? 1 : Math.abs(2 * transform[4] / transform[2]);

    var vertex = [
        direction === 'left' ? -hBase : direction === 'right' ? hBase : 0,
        direction === 'top' ? -vBase : direction === 'bottom' ? vBase : 0
    ];

    vertex = applyTransform$1(vertex, transform, invert$$1);

    return Math.abs(vertex[0]) > Math.abs(vertex[1])
        ? (vertex[0] > 0 ? 'right' : 'left')
        : (vertex[1] > 0 ? 'bottom' : 'top');
}

/**
 * Apply group transition animation from g1 to g2.
 * If no animatableModel, no animation.
 */
function groupTransition(g1, g2, animatableModel, cb) {
    if (!g1 || !g2) {
        return;
    }

    function getElMap(g) {
        var elMap = {};
        g.traverse(function (el) {
            if (!el.isGroup && el.anid) {
                elMap[el.anid] = el;
            }
        });
        return elMap;
    }
    function getAnimatableProps(el) {
        var obj = {
            position: clone$1(el.position),
            rotation: el.rotation
        };
        if (el.shape) {
            obj.shape = extend({}, el.shape);
        }
        return obj;
    }
    var elMap1 = getElMap(g1);

    g2.traverse(function (el) {
        if (!el.isGroup && el.anid) {
            var oldEl = elMap1[el.anid];
            if (oldEl) {
                var newProp = getAnimatableProps(el);
                el.attr(getAnimatableProps(oldEl));
                updateProps(el, newProp, animatableModel, el.dataIndex);
            }
            // else {
            //     if (el.previousProps) {
            //         graphic.updateProps
            //     }
            // }
        }
    });
}

/**
 * @param {Array.<Array.<number>>} points Like: [[23, 44], [53, 66], ...]
 * @param {Object} rect {x, y, width, height}
 * @return {Array.<Array.<number>>} A new clipped points.
 */
function clipPointsByRect(points, rect) {
    return map(points, function (point) {
        var x = point[0];
        x = mathMax$1(x, rect.x);
        x = mathMin$1(x, rect.x + rect.width);
        var y = point[1];
        y = mathMax$1(y, rect.y);
        y = mathMin$1(y, rect.y + rect.height);
        return [x, y];
    });
}

/**
 * @param {Object} targetRect {x, y, width, height}
 * @param {Object} rect {x, y, width, height}
 * @return {Object} A new clipped rect. If rect size are negative, return undefined.
 */
function clipRectByRect(targetRect, rect) {
    var x = mathMax$1(targetRect.x, rect.x);
    var x2 = mathMin$1(targetRect.x + targetRect.width, rect.x + rect.width);
    var y = mathMax$1(targetRect.y, rect.y);
    var y2 = mathMin$1(targetRect.y + targetRect.height, rect.y + rect.height);

    if (x2 >= x && y2 >= y) {
        return {
            x: x,
            y: y,
            width: x2 - x,
            height: y2 - y
        };
    }
}

/**
 * @param {string} iconStr Support 'image://' or 'path://' or direct svg path.
 * @param {Object} [opt] Properties of `module:zrender/Element`, except `style`.
 * @param {Object} [rect] {x, y, width, height}
 * @return {module:zrender/Element} Icon path or image element.
 */
function createIcon(iconStr, opt, rect) {
    opt = extend({rectHover: true}, opt);
    var style = opt.style = {strokeNoScale: true};
    rect = rect || {x: -1, y: -1, width: 2, height: 2};

    if (iconStr) {
        return iconStr.indexOf('image://') === 0
            ? (
                style.image = iconStr.slice(8),
                defaults(style, rect),
                new ZImage(opt)
            )
            : (
                makePath(
                    iconStr.replace('path://', ''),
                    opt,
                    rect,
                    'center'
                )
            );
    }
}




var graphic = (Object.freeze || Object)({
	extendShape: extendShape,
	extendPath: extendPath,
	makePath: makePath,
	makeImage: makeImage,
	mergePath: mergePath,
	resizePath: resizePath,
	subPixelOptimizeLine: subPixelOptimizeLine,
	subPixelOptimizeRect: subPixelOptimizeRect,
	subPixelOptimize: subPixelOptimize,
	setHoverStyle: setHoverStyle,
	setLabelStyle: setLabelStyle,
	setTextStyle: setTextStyle,
	setText: setText,
	getFont: getFont,
	updateProps: updateProps,
	initProps: initProps,
	getTransform: getTransform,
	applyTransform: applyTransform$1,
	transformDirection: transformDirection,
	groupTransition: groupTransition,
	clipPointsByRect: clipPointsByRect,
	clipRectByRect: clipRectByRect,
	createIcon: createIcon,
	Group: Group,
	Image: ZImage,
	Text: Text,
	Circle: Circle,
	Sector: Sector,
	Ring: Ring,
	Polygon: Polygon,
	Polyline: Polyline,
	Rect: Rect,
	Line: Line,
	BezierCurve: BezierCurve,
	Arc: Arc,
	IncrementalDisplayable: IncrementalDisplayble,
	CompoundPath: CompoundPath,
	LinearGradient: LinearGradient,
	RadialGradient: RadialGradient,
	BoundingRect: BoundingRect
});

var PATH_COLOR = ['textStyle', 'color'];

var textStyleMixin = {
    /**
     * Get color property or get color from option.textStyle.color
     * @param {boolean} [isEmphasis]
     * @return {string}
     */
    getTextColor: function (isEmphasis) {
        var ecModel = this.ecModel;
        return this.getShallow('color')
            || (
                (!isEmphasis && ecModel) ? ecModel.get(PATH_COLOR) : null
            );
    },

    /**
     * Create font string from fontStyle, fontWeight, fontSize, fontFamily
     * @return {string}
     */
    getFont: function () {
        return getFont({
            fontStyle: this.getShallow('fontStyle'),
            fontWeight: this.getShallow('fontWeight'),
            fontSize: this.getShallow('fontSize'),
            fontFamily: this.getShallow('fontFamily')
        }, this.ecModel);
    },

    getTextRect: function (text) {
        return getBoundingRect(
            text,
            this.getFont(),
            this.getShallow('align'),
            this.getShallow('verticalAlign') || this.getShallow('baseline'),
            this.getShallow('padding'),
            this.getShallow('rich'),
            this.getShallow('truncateText')
        );
    }
};

var getItemStyle = makeStyleMapper(
    [
        ['fill', 'color'],
        ['stroke', 'borderColor'],
        ['lineWidth', 'borderWidth'],
        ['opacity'],
        ['shadowBlur'],
        ['shadowOffsetX'],
        ['shadowOffsetY'],
        ['shadowColor'],
        ['textPosition'],
        ['textAlign']
    ]
);

var itemStyleMixin = {
    getItemStyle: function (excludes, includes) {
        var style = getItemStyle(this, excludes, includes);
        var lineDash = this.getBorderLineDash();
        lineDash && (style.lineDash = lineDash);
        return style;
    },

    getBorderLineDash: function () {
        var lineType = this.get('borderType');
        return (lineType === 'solid' || lineType == null) ? null
            : (lineType === 'dashed' ? [5, 5] : [1, 1]);
    }
};

/**
 * @module echarts/model/Model
 */

var mixin$1 = mixin;
var inner = makeInner();

/**
 * @alias module:echarts/model/Model
 * @constructor
 * @param {Object} option
 * @param {module:echarts/model/Model} [parentModel]
 * @param {module:echarts/model/Global} [ecModel]
 */
function Model(option, parentModel, ecModel) {
    /**
     * @type {module:echarts/model/Model}
     * @readOnly
     */
    this.parentModel = parentModel;

    /**
     * @type {module:echarts/model/Global}
     * @readOnly
     */
    this.ecModel = ecModel;

    /**
     * @type {Object}
     * @protected
     */
    this.option = option;

    // Simple optimization
    // if (this.init) {
    //     if (arguments.length <= 4) {
    //         this.init(option, parentModel, ecModel, extraOpt);
    //     }
    //     else {
    //         this.init.apply(this, arguments);
    //     }
    // }
}

Model.prototype = {

    constructor: Model,

    /**
     * Model 的初始化函数
     * @param {Object} option
     */
    init: null,

    /**
     * 从新的 Option merge
     */
    mergeOption: function (option) {
        merge(this.option, option, true);
    },

    /**
     * @param {string|Array.<string>} path
     * @param {boolean} [ignoreParent=false]
     * @return {*}
     */
    get: function (path, ignoreParent) {
        if (path == null) {
            return this.option;
        }

        return doGet(
            this.option,
            this.parsePath(path),
            !ignoreParent && getParent(this, path)
        );
    },

    /**
     * @param {string} key
     * @param {boolean} [ignoreParent=false]
     * @return {*}
     */
    getShallow: function (key, ignoreParent) {
        var option = this.option;

        var val = option == null ? option : option[key];
        var parentModel = !ignoreParent && getParent(this, key);
        if (val == null && parentModel) {
            val = parentModel.getShallow(key);
        }
        return val;
    },

    /**
     * @param {string|Array.<string>} [path]
     * @param {module:echarts/model/Model} [parentModel]
     * @return {module:echarts/model/Model}
     */
    getModel: function (path, parentModel) {
        var obj = path == null
            ? this.option
            : doGet(this.option, path = this.parsePath(path));

        var thisParentModel;
        parentModel = parentModel || (
            (thisParentModel = getParent(this, path))
                && thisParentModel.getModel(path)
        );

        return new Model(obj, parentModel, this.ecModel);
    },

    /**
     * If model has option
     */
    isEmpty: function () {
        return this.option == null;
    },

    restoreData: function () {},

    // Pending
    clone: function () {
        var Ctor = this.constructor;
        return new Ctor(clone(this.option));
    },

    setReadOnly: function (properties) {
        // clazzUtil.setReadOnly(this, properties);
    },

    // If path is null/undefined, return null/undefined.
    parsePath: function(path) {
        if (typeof path === 'string') {
            path = path.split('.');
        }
        return path;
    },

    /**
     * @param {Function} getParentMethod
     *        param {Array.<string>|string} path
     *        return {module:echarts/model/Model}
     */
    customizeGetParent: function (getParentMethod) {
        inner(this).getParent = getParentMethod;
    },

    isAnimationEnabled: function () {
        if (!env$1.node) {
            if (this.option.animation != null) {
                return !!this.option.animation;
            }
            else if (this.parentModel) {
                return this.parentModel.isAnimationEnabled();
            }
        }
    }

};

function doGet(obj, pathArr, parentModel) {
    for (var i = 0; i < pathArr.length; i++) {
        // Ignore empty
        if (!pathArr[i]) {
            continue;
        }
        // obj could be number/string/... (like 0)
        obj = (obj && typeof obj === 'object') ? obj[pathArr[i]] : null;
        if (obj == null) {
            break;
        }
    }
    if (obj == null && parentModel) {
        obj = parentModel.get(pathArr);
    }
    return obj;
}

// `path` can be null/undefined
function getParent(model, path) {
    var getParentMethod = inner(model).getParent;
    return getParentMethod ? getParentMethod.call(model, path) : model.parentModel;
}

// Enable Model.extend.
enableClassExtend(Model);
enableClassCheck(Model);

mixin$1(Model, lineStyleMixin);
mixin$1(Model, areaStyleMixin);
mixin$1(Model, textStyleMixin);
mixin$1(Model, itemStyleMixin);

var base = 0;

/**
 * @public
 * @param {string} type
 * @return {string}
 */
function getUID(type) {
    // Considering the case of crossing js context,
    // use Math.random to make id as unique as possible.
    return [(type || ''), base++, Math.random().toFixed(5)].join('_');
}

/**
 * @inner
 */
function enableSubTypeDefaulter(entity) {

    var subTypeDefaulters = {};

    entity.registerSubTypeDefaulter = function (componentType, defaulter) {
        componentType = parseClassType$1(componentType);
        subTypeDefaulters[componentType.main] = defaulter;
    };

    entity.determineSubType = function (componentType, option) {
        var type = option.type;
        if (!type) {
            var componentTypeMain = parseClassType$1(componentType).main;
            if (entity.hasSubTypes(componentType) && subTypeDefaulters[componentTypeMain]) {
                type = subTypeDefaulters[componentTypeMain](option);
            }
        }
        return type;
    };

    return entity;
}

/**
 * Topological travel on Activity Network (Activity On Vertices).
 * Dependencies is defined in Model.prototype.dependencies, like ['xAxis', 'yAxis'].
 *
 * If 'xAxis' or 'yAxis' is absent in componentTypeList, just ignore it in topology.
 *
 * If there is circle dependencey, Error will be thrown.
 *
 */
function enableTopologicalTravel(entity, dependencyGetter) {

    /**
     * @public
     * @param {Array.<string>} targetNameList Target Component type list.
     *                                           Can be ['aa', 'bb', 'aa.xx']
     * @param {Array.<string>} fullNameList By which we can build dependency graph.
     * @param {Function} callback Params: componentType, dependencies.
     * @param {Object} context Scope of callback.
     */
    entity.topologicalTravel = function (targetNameList, fullNameList, callback, context) {
        if (!targetNameList.length) {
            return;
        }

        var result = makeDepndencyGraph(fullNameList);
        var graph = result.graph;
        var stack = result.noEntryList;

        var targetNameSet = {};
        each$1(targetNameList, function (name) {
            targetNameSet[name] = true;
        });

        while (stack.length) {
            var currComponentType = stack.pop();
            var currVertex = graph[currComponentType];
            var isInTargetNameSet = !!targetNameSet[currComponentType];
            if (isInTargetNameSet) {
                callback.call(context, currComponentType, currVertex.originalDeps.slice());
                delete targetNameSet[currComponentType];
            }
            each$1(
                currVertex.successor,
                isInTargetNameSet ? removeEdgeAndAdd : removeEdge
            );
        }

        each$1(targetNameSet, function () {
            throw new Error('Circle dependency may exists');
        });

        function removeEdge(succComponentType) {
            graph[succComponentType].entryCount--;
            if (graph[succComponentType].entryCount === 0) {
                stack.push(succComponentType);
            }
        }

        // Consider this case: legend depends on series, and we call
        // chart.setOption({series: [...]}), where only series is in option.
        // If we do not have 'removeEdgeAndAdd', legendModel.mergeOption will
        // not be called, but only sereis.mergeOption is called. Thus legend
        // have no chance to update its local record about series (like which
        // name of series is available in legend).
        function removeEdgeAndAdd(succComponentType) {
            targetNameSet[succComponentType] = true;
            removeEdge(succComponentType);
        }
    };

    /**
     * DepndencyGraph: {Object}
     * key: conponentType,
     * value: {
     *     successor: [conponentTypes...],
     *     originalDeps: [conponentTypes...],
     *     entryCount: {number}
     * }
     */
    function makeDepndencyGraph(fullNameList) {
        var graph = {};
        var noEntryList = [];

        each$1(fullNameList, function (name) {

            var thisItem = createDependencyGraphItem(graph, name);
            var originalDeps = thisItem.originalDeps = dependencyGetter(name);

            var availableDeps = getAvailableDependencies(originalDeps, fullNameList);
            thisItem.entryCount = availableDeps.length;
            if (thisItem.entryCount === 0) {
                noEntryList.push(name);
            }

            each$1(availableDeps, function (dependentName) {
                if (indexOf(thisItem.predecessor, dependentName) < 0) {
                    thisItem.predecessor.push(dependentName);
                }
                var thatItem = createDependencyGraphItem(graph, dependentName);
                if (indexOf(thatItem.successor, dependentName) < 0) {
                    thatItem.successor.push(name);
                }
            });
        });

        return {graph: graph, noEntryList: noEntryList};
    }

    function createDependencyGraphItem(graph, name) {
        if (!graph[name]) {
            graph[name] = {predecessor: [], successor: []};
        }
        return graph[name];
    }

    function getAvailableDependencies(originalDeps, fullNameList) {
        var availableDeps = [];
        each$1(originalDeps, function (dep) {
            indexOf(fullNameList, dep) >= 0 && availableDeps.push(dep);
        });
        return availableDeps;
    }
}

var RADIAN_EPSILON = 1e-4;

function _trim(str) {
    return str.replace(/^\s+/, '').replace(/\s+$/, '');
}

/**
 * Linear mapping a value from domain to range
 * @memberOf module:echarts/util/number
 * @param  {(number|Array.<number>)} val
 * @param  {Array.<number>} domain Domain extent domain[0] can be bigger than domain[1]
 * @param  {Array.<number>} range  Range extent range[0] can be bigger than range[1]
 * @param  {boolean} clamp
 * @return {(number|Array.<number>}
 */
function linearMap(val, domain, range, clamp) {
    var subDomain = domain[1] - domain[0];
    var subRange = range[1] - range[0];

    if (subDomain === 0) {
        return subRange === 0
            ? range[0]
            : (range[0] + range[1]) / 2;
    }

    // Avoid accuracy problem in edge, such as
    // 146.39 - 62.83 === 83.55999999999999.
    // See echarts/test/ut/spec/util/number.js#linearMap#accuracyError
    // It is a little verbose for efficiency considering this method
    // is a hotspot.
    if (clamp) {
        if (subDomain > 0) {
            if (val <= domain[0]) {
                return range[0];
            }
            else if (val >= domain[1]) {
                return range[1];
            }
        }
        else {
            if (val >= domain[0]) {
                return range[0];
            }
            else if (val <= domain[1]) {
                return range[1];
            }
        }
    }
    else {
        if (val === domain[0]) {
            return range[0];
        }
        if (val === domain[1]) {
            return range[1];
        }
    }

    return (val - domain[0]) / subDomain * subRange + range[0];
}

/**
 * Convert a percent string to absolute number.
 * Returns NaN if percent is not a valid string or number
 * @memberOf module:echarts/util/number
 * @param {string|number} percent
 * @param {number} all
 * @return {number}
 */
function parsePercent$1(percent, all) {
    switch (percent) {
        case 'center':
        case 'middle':
            percent = '50%';
            break;
        case 'left':
        case 'top':
            percent = '0%';
            break;
        case 'right':
        case 'bottom':
            percent = '100%';
            break;
    }
    if (typeof percent === 'string') {
        if (_trim(percent).match(/%$/)) {
            return parseFloat(percent) / 100 * all;
        }

        return parseFloat(percent);
    }

    return percent == null ? NaN : +percent;
}

/**
 * (1) Fix rounding error of float numbers.
 * (2) Support return string to avoid scientific notation like '3.5e-7'.
 *
 * @param {number} x
 * @param {number} [precision]
 * @param {boolean} [returnStr]
 * @return {number|string}
 */
function round$1(x, precision, returnStr) {
    if (precision == null) {
        precision = 10;
    }
    // Avoid range error
    precision = Math.min(Math.max(0, precision), 20);
    x = (+x).toFixed(precision);
    return returnStr ? x : +x;
}



/**
 * Get precision
 * @param {number} val
 */


/**
 * @param {string|number} val
 * @return {number}
 */
function getPrecisionSafe(val) {
    var str = val.toString();

    // Consider scientific notation: '3.4e-12' '3.4e+12'
    var eIndex = str.indexOf('e');
    if (eIndex > 0) {
        var precision = +str.slice(eIndex + 1);
        return precision < 0 ? -precision : 0;
    }
    else {
        var dotIndex = str.indexOf('.');
        return dotIndex < 0 ? 0 : str.length - 1 - dotIndex;
    }
}

/**
 * Minimal dicernible data precisioin according to a single pixel.
 *
 * @param {Array.<number>} dataExtent
 * @param {Array.<number>} pixelExtent
 * @return {number} precision
 */
function getPixelPrecision(dataExtent, pixelExtent) {
    var log = Math.log;
    var LN10 = Math.LN10;
    var dataQuantity = Math.floor(log(dataExtent[1] - dataExtent[0]) / LN10);
    var sizeQuantity = Math.round(log(Math.abs(pixelExtent[1] - pixelExtent[0])) / LN10);
    // toFixed() digits argument must be between 0 and 20.
    var precision = Math.min(Math.max(-dataQuantity + sizeQuantity, 0), 20);
    return !isFinite(precision) ? 20 : precision;
}

/**
 * Get a data of given precision, assuring the sum of percentages
 * in valueList is 1.
 * The largest remainer method is used.
 * https://en.wikipedia.org/wiki/Largest_remainder_method
 *
 * @param {Array.<number>} valueList a list of all data
 * @param {number} idx index of the data to be processed in valueList
 * @param {number} precision integer number showing digits of precision
 * @return {number} percent ranging from 0 to 100
 */
function getPercentWithPrecision(valueList, idx, precision) {
    if (!valueList[idx]) {
        return 0;
    }

    var sum = reduce(valueList, function (acc, val) {
        return acc + (isNaN(val) ? 0 : val);
    }, 0);
    if (sum === 0) {
        return 0;
    }

    var digits = Math.pow(10, precision);
    var votesPerQuota = map(valueList, function (val) {
        return (isNaN(val) ? 0 : val) / sum * digits * 100;
    });
    var targetSeats = digits * 100;

    var seats = map(votesPerQuota, function (votes) {
        // Assign automatic seats.
        return Math.floor(votes);
    });
    var currentSum = reduce(seats, function (acc, val) {
        return acc + val;
    }, 0);

    var remainder = map(votesPerQuota, function (votes, idx) {
        return votes - seats[idx];
    });

    // Has remainding votes.
    while (currentSum < targetSeats) {
        // Find next largest remainder.
        var max = Number.NEGATIVE_INFINITY;
        var maxId = null;
        for (var i = 0, len = remainder.length; i < len; ++i) {
            if (remainder[i] > max) {
                max = remainder[i];
                maxId = i;
            }
        }

        // Add a vote to max remainder.
        ++seats[maxId];
        remainder[maxId] = 0;
        ++currentSum;
    }

    return seats[idx] / digits;
}

// Number.MAX_SAFE_INTEGER, ie do not support.


/**
 * To 0 - 2 * PI, considering negative radian.
 * @param {number} radian
 * @return {number}
 */
function remRadian(radian) {
    var pi2 = Math.PI * 2;
    return (radian % pi2 + pi2) % pi2;
}

/**
 * @param {type} radian
 * @return {boolean}
 */
function isRadianAroundZero(val) {
    return val > -RADIAN_EPSILON && val < RADIAN_EPSILON;
}

var TIME_REG = /^(?:(\d{4})(?:[-\/](\d{1,2})(?:[-\/](\d{1,2})(?:[T ](\d{1,2})(?::(\d\d)(?::(\d\d)(?:[.,](\d+))?)?)?(Z|[\+\-]\d\d:?\d\d)?)?)?)?)?$/; // jshint ignore:line

/**
 * @param {string|Date|number} value These values can be accepted:
 *   + An instance of Date, represent a time in its own time zone.
 *   + Or string in a subset of ISO 8601, only including:
 *     + only year, month, date: '2012-03', '2012-03-01', '2012-03-01 05', '2012-03-01 05:06',
 *     + separated with T or space: '2012-03-01T12:22:33.123', '2012-03-01 12:22:33.123',
 *     + time zone: '2012-03-01T12:22:33Z', '2012-03-01T12:22:33+8000', '2012-03-01T12:22:33-05:00',
 *     all of which will be treated as local time if time zone is not specified
 *     (see <https://momentjs.com/>).
 *   + Or other string format, including (all of which will be treated as loacal time):
 *     '2012', '2012-3-1', '2012/3/1', '2012/03/01',
 *     '2009/6/12 2:00', '2009/6/12 2:05:08', '2009/6/12 2:05:08.123'
 *   + a timestamp, which represent a time in UTC.
 * @return {Date} date
 */
function parseDate(value) {
    if (value instanceof Date) {
        return value;
    }
    else if (typeof value === 'string') {
        // Different browsers parse date in different way, so we parse it manually.
        // Some other issues:
        // new Date('1970-01-01') is UTC,
        // new Date('1970/01/01') and new Date('1970-1-01') is local.
        // See issue #3623
        var match = TIME_REG.exec(value);

        if (!match) {
            // return Invalid Date.
            return new Date(NaN);
        }

        // Use local time when no timezone offset specifed.
        if (!match[8]) {
            // match[n] can only be string or undefined.
            // But take care of '12' + 1 => '121'.
            return new Date(
                +match[1],
                +(match[2] || 1) - 1,
                +match[3] || 1,
                +match[4] || 0,
                +(match[5] || 0),
                +match[6] || 0,
                +match[7] || 0
            );
        }
        // Timezoneoffset of Javascript Date has considered DST (Daylight Saving Time,
        // https://tc39.github.io/ecma262/#sec-daylight-saving-time-adjustment).
        // For example, system timezone is set as "Time Zone: America/Toronto",
        // then these code will get different result:
        // `new Date(1478411999999).getTimezoneOffset();  // get 240`
        // `new Date(1478412000000).getTimezoneOffset();  // get 300`
        // So we should not use `new Date`, but use `Date.UTC`.
        else {
            var hour = +match[4] || 0;
            if (match[8].toUpperCase() !== 'Z') {
                hour -= match[8].slice(0, 3);
            }
            return new Date(Date.UTC(
                +match[1],
                +(match[2] || 1) - 1,
                +match[3] || 1,
                hour,
                +(match[5] || 0),
                +match[6] || 0,
                +match[7] || 0
            ));
        }
    }
    else if (value == null) {
        return new Date(NaN);
    }

    return new Date(Math.round(value));
}

/**
 * Quantity of a number. e.g. 0.1, 1, 10, 100
 *
 * @param  {number} val
 * @return {number}
 */
function quantity(val) {
    return Math.pow(10, quantityExponent(val));
}

function quantityExponent(val) {
    return Math.floor(Math.log(val) / Math.LN10);
}

/**
 * find a “nice” number approximately equal to x. Round the number if round = true,
 * take ceiling if round = false. The primary observation is that the “nicest”
 * numbers in decimal are 1, 2, and 5, and all power-of-ten multiples of these numbers.
 *
 * See "Nice Numbers for Graph Labels" of Graphic Gems.
 *
 * @param  {number} val Non-negative value.
 * @param  {boolean} round
 * @return {number}
 */
function nice(val, round) {
    var exponent = quantityExponent(val);
    var exp10 = Math.pow(10, exponent);
    var f = val / exp10; // 1 <= f < 10
    var nf;
    if (round) {
        if (f < 1.5) { nf = 1; }
        else if (f < 2.5) { nf = 2; }
        else if (f < 4) { nf = 3; }
        else if (f < 7) { nf = 5; }
        else { nf = 10; }
    }
    else {
        if (f < 1) { nf = 1; }
        else if (f < 2) { nf = 2; }
        else if (f < 3) { nf = 3; }
        else if (f < 5) { nf = 5; }
        else { nf = 10; }
    }
    val = nf * exp10;

    // Fix 3 * 0.1 === 0.30000000000000004 issue (see IEEE 754).
    // 20 is the uppper bound of toFixed.
    return exponent >= -20 ? +val.toFixed(exponent < 0 ? -exponent : 0) : val;
}

/**
 * Order intervals asc, and split them when overlap.
 * expect(numberUtil.reformIntervals([
 *     {interval: [18, 62], close: [1, 1]},
 *     {interval: [-Infinity, -70], close: [0, 0]},
 *     {interval: [-70, -26], close: [1, 1]},
 *     {interval: [-26, 18], close: [1, 1]},
 *     {interval: [62, 150], close: [1, 1]},
 *     {interval: [106, 150], close: [1, 1]},
 *     {interval: [150, Infinity], close: [0, 0]}
 * ])).toEqual([
 *     {interval: [-Infinity, -70], close: [0, 0]},
 *     {interval: [-70, -26], close: [1, 1]},
 *     {interval: [-26, 18], close: [0, 1]},
 *     {interval: [18, 62], close: [0, 1]},
 *     {interval: [62, 150], close: [0, 1]},
 *     {interval: [150, Infinity], close: [0, 0]}
 * ]);
 * @param {Array.<Object>} list, where `close` mean open or close
 *        of the interval, and Infinity can be used.
 * @return {Array.<Object>} The origin list, which has been reformed.
 */


/**
 * parseFloat NaNs numeric-cast false positives (null|true|false|"")
 * ...but misinterprets leading-number strings, particularly hex literals ("0x...")
 * subtraction forces infinities to NaN
 *
 * @param {*} v
 * @return {boolean}
 */

/**
 * 每三位默认加,格式化
 * @param {string|number} x
 * @return {string}
 */
function addCommas(x) {
    if (isNaN(x)) {
        return '-';
    }
    x = (x + '').split('.');
    return x[0].replace(/(\d{1,3})(?=(?:\d{3})+(?!\d))/g,'$1,')
            + (x.length > 1 ? ('.' + x[1]) : '');
}

/**
 * @param {string} str
 * @param {boolean} [upperCaseFirst=false]
 * @return {string} str
 */


var normalizeCssArray$1 = normalizeCssArray;

function encodeHTML(source) {
    return String(source)
        .replace(/&/g, '&amp;')
        .replace(/</g, '&lt;')
        .replace(/>/g, '&gt;')
        .replace(/"/g, '&quot;')
        .replace(/'/g, '&#39;');
}

var TPL_VAR_ALIAS = ['a', 'b', 'c', 'd', 'e', 'f', 'g'];

var wrapVar = function (varName, seriesIdx) {
    return '{' + varName + (seriesIdx == null ? '' : seriesIdx) + '}';
};

/**
 * Template formatter
 * @param {string} tpl
 * @param {Array.<Object>|Object} paramsList
 * @param {boolean} [encode=false]
 * @return {string}
 */
function formatTpl(tpl, paramsList, encode) {
    if (!isArray(paramsList)) {
        paramsList = [paramsList];
    }
    var seriesLen = paramsList.length;
    if (!seriesLen) {
        return '';
    }

    var $vars = paramsList[0].$vars || [];
    for (var i = 0; i < $vars.length; i++) {
        var alias = TPL_VAR_ALIAS[i];
        tpl = tpl.replace(wrapVar(alias), wrapVar(alias, 0));
    }
    for (var seriesIdx = 0; seriesIdx < seriesLen; seriesIdx++) {
        for (var k = 0; k < $vars.length; k++) {
            var val = paramsList[seriesIdx][$vars[k]];
            tpl = tpl.replace(
                wrapVar(TPL_VAR_ALIAS[k], seriesIdx),
                encode ? encodeHTML(val) : val
            );
        }
    }

    return tpl;
}

/**
 * simple Template formatter
 *
 * @param {string} tpl
 * @param {Object} param
 * @param {boolean} [encode=false]
 * @return {string}
 */


/**
 * @param {Object|string} [opt] If string, means color.
 * @param {string} [opt.color]
 * @param {string} [opt.extraCssText]
 * @param {string} [opt.type='item'] 'item' or 'subItem'
 * @return {string}
 */
function getTooltipMarker(opt, extraCssText) {
    opt = isString(opt) ? {color: opt, extraCssText: extraCssText} : (opt || {});
    var color = opt.color;
    var type = opt.type;
    var extraCssText = opt.extraCssText;

    if (!color) {
        return '';
    }

    return type === 'subItem'
        ? '<span style="display:inline-block;vertical-align:middle;margin-right:8px;margin-left:3px;'
            + 'border-radius:4px;width:4px;height:4px;background-color:'
            + encodeHTML(color) + ';' + (extraCssText || '') + '"></span>'
        : '<span style="display:inline-block;margin-right:5px;'
            + 'border-radius:10px;width:10px;height:10px;background-color:'
            + encodeHTML(color) + ';' + (extraCssText || '') + '"></span>';
}

function pad(str, len) {
    str += '';
    return '0000'.substr(0, len - str.length) + str;
}


/**
 * ISO Date format
 * @param {string} tpl
 * @param {number} value
 * @param {boolean} [isUTC=false] Default in local time.
 *           see `module:echarts/scale/Time`
 *           and `module:echarts/util/number#parseDate`.
 * @inner
 */
function formatTime(tpl, value, isUTC) {
    if (tpl === 'week'
        || tpl === 'month'
        || tpl === 'quarter'
        || tpl === 'half-year'
        || tpl === 'year'
    ) {
        tpl = 'MM-dd\nyyyy';
    }

    var date = parseDate(value);
    var utc = isUTC ? 'UTC' : '';
    var y = date['get' + utc + 'FullYear']();
    var M = date['get' + utc + 'Month']() + 1;
    var d = date['get' + utc + 'Date']();
    var h = date['get' + utc + 'Hours']();
    var m = date['get' + utc + 'Minutes']();
    var s = date['get' + utc + 'Seconds']();
    var S = date['get' + utc + 'Milliseconds']();

    tpl = tpl.replace('MM', pad(M, 2))
        .replace('M', M)
        .replace('yyyy', y)
        .replace('yy', y % 100)
        .replace('dd', pad(d, 2))
        .replace('d', d)
        .replace('hh', pad(h, 2))
        .replace('h', h)
        .replace('mm', pad(m, 2))
        .replace('m', m)
        .replace('ss', pad(s, 2))
        .replace('s', s)
        .replace('SSS', pad(S, 3));

    return tpl;
}

/**
 * Capital first
 * @param {string} str
 * @return {string}
 */


var truncateText$1 = truncateText;

// Layout helpers for each component positioning

var each$3 = each$1;

/**
 * @public
 */
var LOCATION_PARAMS = [
    'left', 'right', 'top', 'bottom', 'width', 'height'
];

/**
 * @public
 */
var HV_NAMES = [
    ['width', 'left', 'right'],
    ['height', 'top', 'bottom']
];

function boxLayout(orient, group, gap, maxWidth, maxHeight) {
    var x = 0;
    var y = 0;

    if (maxWidth == null) {
        maxWidth = Infinity;
    }
    if (maxHeight == null) {
        maxHeight = Infinity;
    }
    var currentLineMaxSize = 0;

    group.eachChild(function (child, idx) {
        var position = child.position;
        var rect = child.getBoundingRect();
        var nextChild = group.childAt(idx + 1);
        var nextChildRect = nextChild && nextChild.getBoundingRect();
        var nextX;
        var nextY;

        if (orient === 'horizontal') {
            var moveX = rect.width + (nextChildRect ? (-nextChildRect.x + rect.x) : 0);
            nextX = x + moveX;
            // Wrap when width exceeds maxWidth or meet a `newline` group
            // FIXME compare before adding gap?
            if (nextX > maxWidth || child.newline) {
                x = 0;
                nextX = moveX;
                y += currentLineMaxSize + gap;
                currentLineMaxSize = rect.height;
            }
            else {
                // FIXME: consider rect.y is not `0`?
                currentLineMaxSize = Math.max(currentLineMaxSize, rect.height);
            }
        }
        else {
            var moveY = rect.height + (nextChildRect ? (-nextChildRect.y + rect.y) : 0);
            nextY = y + moveY;
            // Wrap when width exceeds maxHeight or meet a `newline` group
            if (nextY > maxHeight || child.newline) {
                x += currentLineMaxSize + gap;
                y = 0;
                nextY = moveY;
                currentLineMaxSize = rect.width;
            }
            else {
                currentLineMaxSize = Math.max(currentLineMaxSize, rect.width);
            }
        }

        if (child.newline) {
            return;
        }

        position[0] = x;
        position[1] = y;

        orient === 'horizontal'
            ? (x = nextX + gap)
            : (y = nextY + gap);
    });
}

/**
 * VBox or HBox layouting
 * @param {string} orient
 * @param {module:zrender/container/Group} group
 * @param {number} gap
 * @param {number} [width=Infinity]
 * @param {number} [height=Infinity]
 */


/**
 * VBox layouting
 * @param {module:zrender/container/Group} group
 * @param {number} gap
 * @param {number} [width=Infinity]
 * @param {number} [height=Infinity]
 */
var vbox = curry(boxLayout, 'vertical');

/**
 * HBox layouting
 * @param {module:zrender/container/Group} group
 * @param {number} gap
 * @param {number} [width=Infinity]
 * @param {number} [height=Infinity]
 */
var hbox = curry(boxLayout, 'horizontal');

/**
 * If x or x2 is not specified or 'center' 'left' 'right',
 * the width would be as long as possible.
 * If y or y2 is not specified or 'middle' 'top' 'bottom',
 * the height would be as long as possible.
 *
 * @param {Object} positionInfo
 * @param {number|string} [positionInfo.x]
 * @param {number|string} [positionInfo.y]
 * @param {number|string} [positionInfo.x2]
 * @param {number|string} [positionInfo.y2]
 * @param {Object} containerRect {width, height}
 * @param {string|number} margin
 * @return {Object} {width, height}
 */


/**
 * Parse position info.
 *
 * @param {Object} positionInfo
 * @param {number|string} [positionInfo.left]
 * @param {number|string} [positionInfo.top]
 * @param {number|string} [positionInfo.right]
 * @param {number|string} [positionInfo.bottom]
 * @param {number|string} [positionInfo.width]
 * @param {number|string} [positionInfo.height]
 * @param {number|string} [positionInfo.aspect] Aspect is width / height
 * @param {Object} containerRect
 * @param {string|number} [margin]
 *
 * @return {module:zrender/core/BoundingRect}
 */
function getLayoutRect(
    positionInfo, containerRect, margin
) {
    margin = normalizeCssArray$1(margin || 0);

    var containerWidth = containerRect.width;
    var containerHeight = containerRect.height;

    var left = parsePercent$1(positionInfo.left, containerWidth);
    var top = parsePercent$1(positionInfo.top, containerHeight);
    var right = parsePercent$1(positionInfo.right, containerWidth);
    var bottom = parsePercent$1(positionInfo.bottom, containerHeight);
    var width = parsePercent$1(positionInfo.width, containerWidth);
    var height = parsePercent$1(positionInfo.height, containerHeight);

    var verticalMargin = margin[2] + margin[0];
    var horizontalMargin = margin[1] + margin[3];
    var aspect = positionInfo.aspect;

    // If width is not specified, calculate width from left and right
    if (isNaN(width)) {
        width = containerWidth - right - horizontalMargin - left;
    }
    if (isNaN(height)) {
        height = containerHeight - bottom - verticalMargin - top;
    }

    if (aspect != null) {
        // If width and height are not given
        // 1. Graph should not exceeds the container
        // 2. Aspect must be keeped
        // 3. Graph should take the space as more as possible
        // FIXME
        // Margin is not considered, because there is no case that both
        // using margin and aspect so far.
        if (isNaN(width) && isNaN(height)) {
            if (aspect > containerWidth / containerHeight) {
                width = containerWidth * 0.8;
            }
            else {
                height = containerHeight * 0.8;
            }
        }

        // Calculate width or height with given aspect
        if (isNaN(width)) {
            width = aspect * height;
        }
        if (isNaN(height)) {
            height = width / aspect;
        }
    }

    // If left is not specified, calculate left from right and width
    if (isNaN(left)) {
        left = containerWidth - right - width - horizontalMargin;
    }
    if (isNaN(top)) {
        top = containerHeight - bottom - height - verticalMargin;
    }

    // Align left and top
    switch (positionInfo.left || positionInfo.right) {
        case 'center':
            left = containerWidth / 2 - width / 2 - margin[3];
            break;
        case 'right':
            left = containerWidth - width - horizontalMargin;
            break;
    }
    switch (positionInfo.top || positionInfo.bottom) {
        case 'middle':
        case 'center':
            top = containerHeight / 2 - height / 2 - margin[0];
            break;
        case 'bottom':
            top = containerHeight - height - verticalMargin;
            break;
    }
    // If something is wrong and left, top, width, height are calculated as NaN
    left = left || 0;
    top = top || 0;
    if (isNaN(width)) {
        // Width may be NaN if only one value is given except width
        width = containerWidth - horizontalMargin - left - (right || 0);
    }
    if (isNaN(height)) {
        // Height may be NaN if only one value is given except height
        height = containerHeight - verticalMargin - top - (bottom || 0);
    }

    var rect = new BoundingRect(left + margin[3], top + margin[0], width, height);
    rect.margin = margin;
    return rect;
}


/**
 * Position a zr element in viewport
 *  Group position is specified by either
 *  {left, top}, {right, bottom}
 *  If all properties exists, right and bottom will be igonred.
 *
 * Logic:
 *     1. Scale (against origin point in parent coord)
 *     2. Rotate (against origin point in parent coord)
 *     3. Traslate (with el.position by this method)
 * So this method only fixes the last step 'Traslate', which does not affect
 * scaling and rotating.
 *
 * If be called repeatly with the same input el, the same result will be gotten.
 *
 * @param {module:zrender/Element} el Should have `getBoundingRect` method.
 * @param {Object} positionInfo
 * @param {number|string} [positionInfo.left]
 * @param {number|string} [positionInfo.top]
 * @param {number|string} [positionInfo.right]
 * @param {number|string} [positionInfo.bottom]
 * @param {number|string} [positionInfo.width] Only for opt.boundingModel: 'raw'
 * @param {number|string} [positionInfo.height] Only for opt.boundingModel: 'raw'
 * @param {Object} containerRect
 * @param {string|number} margin
 * @param {Object} [opt]
 * @param {Array.<number>} [opt.hv=[1,1]] Only horizontal or only vertical.
 * @param {Array.<number>} [opt.boundingMode='all']
 *        Specify how to calculate boundingRect when locating.
 *        'all': Position the boundingRect that is transformed and uioned
 *               both itself and its descendants.
 *               This mode simplies confine the elements in the bounding
 *               of their container (e.g., using 'right: 0').
 *        'raw': Position the boundingRect that is not transformed and only itself.
 *               This mode is useful when you want a element can overflow its
 *               container. (Consider a rotated circle needs to be located in a corner.)
 *               In this mode positionInfo.width/height can only be number.
 */


/**
 * @param {Object} option Contains some of the properties in HV_NAMES.
 * @param {number} hvIdx 0: horizontal; 1: vertical.
 */


/**
 * Consider Case:
 * When defulat option has {left: 0, width: 100}, and we set {right: 0}
 * through setOption or media query, using normal zrUtil.merge will cause
 * {right: 0} does not take effect.
 *
 * @example
 * ComponentModel.extend({
 *     init: function () {
 *         ...
 *         var inputPositionParams = layout.getLayoutParams(option);
 *         this.mergeOption(inputPositionParams);
 *     },
 *     mergeOption: function (newOption) {
 *         newOption && zrUtil.merge(thisOption, newOption, true);
 *         layout.mergeLayoutParam(thisOption, newOption);
 *     }
 * });
 *
 * @param {Object} targetOption
 * @param {Object} newOption
 * @param {Object|string} [opt]
 * @param {boolean|Array.<boolean>} [opt.ignoreSize=false] Used for the components
 *  that width (or height) should not be calculated by left and right (or top and bottom).
 */
function mergeLayoutParam(targetOption, newOption, opt) {
    !isObject$1(opt) && (opt = {});

    var ignoreSize = opt.ignoreSize;
    !isArray(ignoreSize) && (ignoreSize = [ignoreSize, ignoreSize]);

    var hResult = merge$$1(HV_NAMES[0], 0);
    var vResult = merge$$1(HV_NAMES[1], 1);

    copy(HV_NAMES[0], targetOption, hResult);
    copy(HV_NAMES[1], targetOption, vResult);

    function merge$$1(names, hvIdx) {
        var newParams = {};
        var newValueCount = 0;
        var merged = {};
        var mergedValueCount = 0;
        var enoughParamNumber = 2;

        each$3(names, function (name) {
            merged[name] = targetOption[name];
        });
        each$3(names, function (name) {
            // Consider case: newOption.width is null, which is
            // set by user for removing width setting.
            hasProp(newOption, name) && (newParams[name] = merged[name] = newOption[name]);
            hasValue(newParams, name) && newValueCount++;
            hasValue(merged, name) && mergedValueCount++;
        });

        if (ignoreSize[hvIdx]) {
            // Only one of left/right is premitted to exist.
            if (hasValue(newOption, names[1])) {
                merged[names[2]] = null;
            }
            else if (hasValue(newOption, names[2])) {
                merged[names[1]] = null;
            }
            return merged;
        }

        // Case: newOption: {width: ..., right: ...},
        // or targetOption: {right: ...} and newOption: {width: ...},
        // There is no conflict when merged only has params count
        // little than enoughParamNumber.
        if (mergedValueCount === enoughParamNumber || !newValueCount) {
            return merged;
        }
        // Case: newOption: {width: ..., right: ...},
        // Than we can make sure user only want those two, and ignore
        // all origin params in targetOption.
        else if (newValueCount >= enoughParamNumber) {
            return newParams;
        }
        else {
            // Chose another param from targetOption by priority.
            for (var i = 0; i < names.length; i++) {
                var name = names[i];
                if (!hasProp(newParams, name) && hasProp(targetOption, name)) {
                    newParams[name] = targetOption[name];
                    break;
                }
            }
            return newParams;
        }
    }

    function hasProp(obj, name) {
        return obj.hasOwnProperty(name);
    }

    function hasValue(obj, name) {
        return obj[name] != null && obj[name] !== 'auto';
    }

    function copy(names, target, source) {
        each$3(names, function (name) {
            target[name] = source[name];
        });
    }
}

/**
 * Retrieve 'left', 'right', 'top', 'bottom', 'width', 'height' from object.
 * @param {Object} source
 * @return {Object} Result contains those props.
 */
function getLayoutParams(source) {
    return copyLayoutParams({}, source);
}

/**
 * Retrieve 'left', 'right', 'top', 'bottom', 'width', 'height' from object.
 * @param {Object} source
 * @return {Object} Result contains those props.
 */
function copyLayoutParams(target, source) {
    source && target && each$3(LOCATION_PARAMS, function (name) {
        source.hasOwnProperty(name) && (target[name] = source[name]);
    });
    return target;
}

var boxLayoutMixin = {
    getBoxLayoutParams: function () {
        return {
            left: this.get('left'),
            top: this.get('top'),
            right: this.get('right'),
            bottom: this.get('bottom'),
            width: this.get('width'),
            height: this.get('height')
        };
    }
};

/**
 * Component model
 *
 * @module echarts/model/Component
 */

var inner$1 = makeInner();

/**
 * @alias module:echarts/model/Component
 * @constructor
 * @param {Object} option
 * @param {module:echarts/model/Model} parentModel
 * @param {module:echarts/model/Model} ecModel
 */
var ComponentModel = Model.extend({

    type: 'component',

    /**
     * @readOnly
     * @type {string}
     */
    id: '',

    /**
     * Because simplified concept is probably better, series.name (or component.name)
     * has been having too many resposibilities:
     * (1) Generating id (which requires name in option should not be modified).
     * (2) As an index to mapping series when merging option or calling API (a name
     * can refer to more then one components, which is convinient is some case).
     * (3) Display.
     * @readOnly
     */
    name: '',

    /**
     * @readOnly
     * @type {string}
     */
    mainType: '',

    /**
     * @readOnly
     * @type {string}
     */
    subType: '',

    /**
     * @readOnly
     * @type {number}
     */
    componentIndex: 0,

    /**
     * @type {Object}
     * @protected
     */
    defaultOption: null,

    /**
     * @type {module:echarts/model/Global}
     * @readOnly
     */
    ecModel: null,

    /**
     * key: componentType
     * value:  Component model list, can not be null.
     * @type {Object.<string, Array.<module:echarts/model/Model>>}
     * @readOnly
     */
    dependentModels: [],

    /**
     * @type {string}
     * @readOnly
     */
    uid: null,

    /**
     * Support merge layout params.
     * Only support 'box' now (left/right/top/bottom/width/height).
     * @type {string|Object} Object can be {ignoreSize: true}
     * @readOnly
     */
    layoutMode: null,

    $constructor: function (option, parentModel, ecModel, extraOpt) {
        Model.call(this, option, parentModel, ecModel, extraOpt);

        this.uid = getUID('ec_cpt_model');
    },

    init: function (option, parentModel, ecModel, extraOpt) {
        this.mergeDefaultAndTheme(option, ecModel);
    },

    mergeDefaultAndTheme: function (option, ecModel) {
        var layoutMode = this.layoutMode;
        var inputPositionParams = layoutMode
            ? getLayoutParams(option) : {};

        var themeModel = ecModel.getTheme();
        merge(option, themeModel.get(this.mainType));
        merge(option, this.getDefaultOption());

        if (layoutMode) {
            mergeLayoutParam(option, inputPositionParams, layoutMode);
        }
    },

    mergeOption: function (option, extraOpt) {
        merge(this.option, option, true);

        var layoutMode = this.layoutMode;
        if (layoutMode) {
            mergeLayoutParam(this.option, option, layoutMode);
        }
    },

    // Hooker after init or mergeOption
    optionUpdated: function (newCptOption, isInit) {},

    getDefaultOption: function () {
        var fields = inner$1(this);
        if (!fields.defaultOption) {
            var optList = [];
            var Class = this.constructor;
            while (Class) {
                var opt = Class.prototype.defaultOption;
                opt && optList.push(opt);
                Class = Class.superClass;
            }

            var defaultOption = {};
            for (var i = optList.length - 1; i >= 0; i--) {
                defaultOption = merge(defaultOption, optList[i], true);
            }
            fields.defaultOption = defaultOption;
        }
        return fields.defaultOption;
    },

    getReferringComponents: function (mainType) {
        return this.ecModel.queryComponents({
            mainType: mainType,
            index: this.get(mainType + 'Index', true),
            id: this.get(mainType + 'Id', true)
        });
    }

});

// Reset ComponentModel.extend, add preConstruct.
// clazzUtil.enableClassExtend(
//     ComponentModel,
//     function (option, parentModel, ecModel, extraOpt) {
//         // Set dependentModels, componentIndex, name, id, mainType, subType.
//         zrUtil.extend(this, extraOpt);

//         this.uid = componentUtil.getUID('componentModel');

//         // this.setReadOnly([
//         //     'type', 'id', 'uid', 'name', 'mainType', 'subType',
//         //     'dependentModels', 'componentIndex'
//         // ]);
//     }
// );

// Add capability of registerClass, getClass, hasClass, registerSubTypeDefaulter and so on.
enableClassManagement(
    ComponentModel, {registerWhenExtend: true}
);
enableSubTypeDefaulter(ComponentModel);

// Add capability of ComponentModel.topologicalTravel.
enableTopologicalTravel(ComponentModel, getDependencies);

function getDependencies(componentType) {
    var deps = [];
    each$1(ComponentModel.getClassesByMainType(componentType), function (Clazz) {
        deps = deps.concat(Clazz.prototype.dependencies || []);
    });

    // Ensure main type.
    deps = map(deps, function (type) {
        return parseClassType$1(type).main;
    });

    // Hack dataset for convenience.
    if (componentType !== 'dataset' && indexOf(deps, 'dataset') <= 0) {
        deps.unshift('dataset');
    }

    return deps;
}

mixin(ComponentModel, boxLayoutMixin);

var platform = '';
// Navigator not exists in node
if (typeof navigator !== 'undefined') {
    platform = navigator.platform || '';
}

var globalDefault = {
    // backgroundColor: 'rgba(0,0,0,0)',

    // https://dribbble.com/shots/1065960-Infographic-Pie-chart-visualization
    // color: ['#5793f3', '#d14a61', '#fd9c35', '#675bba', '#fec42c', '#dd4444', '#d4df5a', '#cd4870'],
    // Light colors:
    // color: ['#bcd3bb', '#e88f70', '#edc1a5', '#9dc5c8', '#e1e8c8', '#7b7c68', '#e5b5b5', '#f0b489', '#928ea8', '#bda29a'],
    // color: ['#cc5664', '#9bd6ec', '#ea946e', '#8acaaa', '#f1ec64', '#ee8686', '#a48dc1', '#5da6bc', '#b9dcae'],
    // Dark colors:
    color: ['#c23531','#2f4554', '#61a0a8', '#d48265', '#91c7ae','#749f83',  '#ca8622', '#bda29a','#6e7074', '#546570', '#c4ccd3'],

    gradientColor: ['#f6efa6', '#d88273', '#bf444c'],

    // If xAxis and yAxis declared, grid is created by default.
    // grid: {},

    textStyle: {
        // color: '#000',
        // decoration: 'none',
        // PENDING
        fontFamily: platform.match(/^Win/) ? 'Microsoft YaHei' : 'sans-serif',
        // fontFamily: 'Arial, Verdana, sans-serif',
        fontSize: 12,
        fontStyle: 'normal',
        fontWeight: 'normal'
    },

    // http://blogs.adobe.com/webplatform/2014/02/24/using-blend-modes-in-html-canvas/
    // https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/globalCompositeOperation
    // Default is source-over
    blendMode: null,

    animation: 'auto',
    animationDuration: 1000,
    animationDurationUpdate: 300,
    animationEasing: 'exponentialOut',
    animationEasingUpdate: 'cubicOut',

    animationThreshold: 2000,
    // Configuration for progressive/incremental rendering
    progressiveThreshold: 3000,
    progressive: 400,

    // Threshold of if use single hover layer to optimize.
    // It is recommended that `hoverLayerThreshold` is equivalent to or less than
    // `progressiveThreshold`, otherwise hover will cause restart of progressive,
    // which is unexpected.
    // see example <echarts/test/heatmap-large.html>.
    hoverLayerThreshold: 3000,

    // See: module:echarts/scale/Time
    useUTC: false
};

var inner$2 = makeInner();

function getNearestColorPalette(colors, requestColorNum) {
    var paletteNum = colors.length;
    // TODO colors must be in order
    for (var i = 0; i < paletteNum; i++) {
        if (colors[i].length > requestColorNum) {
            return colors[i];
        }
    }
    return colors[paletteNum - 1];
}

var colorPaletteMixin = {
    clearColorPalette: function () {
        inner$2(this).colorIdx = 0;
        inner$2(this).colorNameMap = {};
    },

    /**
     * @param {string} name MUST NOT be null/undefined. Otherwise call this function
     *                 twise with the same parameters will get different result.
     * @param {Object} [scope=this]
     * @param {Object} [requestColorNum]
     * @return {string} color string.
     */
    getColorFromPalette: function (name, scope, requestColorNum) {
        scope = scope || this;
        var scopeFields = inner$2(scope);
        var colorIdx = scopeFields.colorIdx || 0;
        var colorNameMap = scopeFields.colorNameMap = scopeFields.colorNameMap || {};
        // Use `hasOwnProperty` to avoid conflict with Object.prototype.
        if (colorNameMap.hasOwnProperty(name)) {
            return colorNameMap[name];
        }
        var defaultColorPalette = normalizeToArray(this.get('color', true));
        var layeredColorPalette = this.get('colorLayer', true);
        var colorPalette = ((requestColorNum == null || !layeredColorPalette)
            ? defaultColorPalette : getNearestColorPalette(layeredColorPalette, requestColorNum));

        // In case can't find in layered color palette.
        colorPalette = colorPalette || defaultColorPalette;

        if (!colorPalette || !colorPalette.length) {
            return;
        }

        var color = colorPalette[colorIdx];
        if (name) {
            colorNameMap[name] = color;
        }
        scopeFields.colorIdx = (colorIdx + 1) % colorPalette.length;

        return color;
    }
};

/**
 * Helper for model references.
 * There are many manners to refer axis/coordSys.
 */

// TODO
// merge relevant logic to this file?
// check: "modelHelper" of tooltip and "BrushTargetManager".

/**
 * @return {Object} For example:
 * {
 *     coordSysName: 'cartesian2d',
 *     coordSysDims: ['x', 'y', ...],
 *     axisMap: HashMap({
 *         x: xAxisModel,
 *         y: yAxisModel
 *     }),
 *     categoryAxisMap: HashMap({
 *         x: xAxisModel,
 *         y: undefined
 *     }),
 *     // It also indicate that whether there is category axis.
 *     firstCategoryDimIndex: 1,
 *     // To replace user specified encode.
 * }
 */
function getCoordSysDefineBySeries(seriesModel) {
    var coordSysName = seriesModel.get('coordinateSystem');
    var result = {
        coordSysName: coordSysName,
        coordSysDims: [],
        axisMap: createHashMap(),
        categoryAxisMap: createHashMap()
    };
    var fetch = fetchers[coordSysName];
    if (fetch) {
        fetch(seriesModel, result, result.axisMap, result.categoryAxisMap);
        return result;
    }
}

var fetchers = {

    cartesian2d: function (seriesModel, result, axisMap, categoryAxisMap) {
        var xAxisModel = seriesModel.getReferringComponents('xAxis')[0];
        var yAxisModel = seriesModel.getReferringComponents('yAxis')[0];

        if (__DEV__) {
            if (!xAxisModel) {
                throw new Error('xAxis "' + retrieve(
                    seriesModel.get('xAxisIndex'),
                    seriesModel.get('xAxisId'),
                    0
                ) + '" not found');
            }
            if (!yAxisModel) {
                throw new Error('yAxis "' + retrieve(
                    seriesModel.get('xAxisIndex'),
                    seriesModel.get('yAxisId'),
                    0
                ) + '" not found');
            }
        }

        result.coordSysDims = ['x', 'y'];
        axisMap.set('x', xAxisModel);
        axisMap.set('y', yAxisModel);

        if (isCategory(xAxisModel)) {
            categoryAxisMap.set('x', xAxisModel);
            result.firstCategoryDimIndex = 0;
        }
        if (isCategory(yAxisModel)) {
            categoryAxisMap.set('y', yAxisModel);
            result.firstCategoryDimIndex = 1;
        }
    },

    singleAxis: function (seriesModel, result, axisMap, categoryAxisMap) {
        var singleAxisModel = seriesModel.getReferringComponents('singleAxis')[0];

        if (__DEV__) {
            if (!singleAxisModel) {
                throw new Error('singleAxis should be specified.');
            }
        }

        result.coordSysDims = ['single'];
        axisMap.set('single', singleAxisModel);

        if (isCategory(singleAxisModel)) {
            categoryAxisMap.set('single', singleAxisModel);
            result.firstCategoryDimIndex = 0;
        }
    },

    polar: function (seriesModel, result, axisMap, categoryAxisMap) {
        var polarModel = seriesModel.getReferringComponents('polar')[0];
        var radiusAxisModel = polarModel.findAxisModel('radiusAxis');
        var angleAxisModel = polarModel.findAxisModel('angleAxis');

        if (__DEV__) {
            if (!angleAxisModel) {
                throw new Error('angleAxis option not found');
            }
            if (!radiusAxisModel) {
                throw new Error('radiusAxis option not found');
            }
        }

        result.coordSysDims = ['radius', 'angle'];
        axisMap.set('radius', radiusAxisModel);
        axisMap.set('angle', angleAxisModel);

        if (isCategory(radiusAxisModel)) {
            categoryAxisMap.set('radius', radiusAxisModel);
            result.firstCategoryDimIndex = 0;
        }
        if (isCategory(angleAxisModel)) {
            categoryAxisMap.set('angle', angleAxisModel);
            result.firstCategoryDimIndex = 1;
        }
    },

    geo: function (seriesModel, result, axisMap, categoryAxisMap) {
        result.coordSysDims = ['lng', 'lat'];
    },

    parallel: function (seriesModel, result, axisMap, categoryAxisMap) {
        var ecModel = seriesModel.ecModel;
        var parallelModel = ecModel.getComponent(
            'parallel', seriesModel.get('parallelIndex')
        );
        var coordSysDims = result.coordSysDims = parallelModel.dimensions.slice();

        each$1(parallelModel.parallelAxisIndex, function (axisIndex, index) {
            var axisModel = ecModel.getComponent('parallelAxis', axisIndex);
            var axisDim = coordSysDims[index];
            axisMap.set(axisDim, axisModel);

            if (isCategory(axisModel) && result.firstCategoryDimIndex == null) {
                categoryAxisMap.set(axisDim, axisModel);
                result.firstCategoryDimIndex = index;
            }
        });
    }
};

function isCategory(axisModel) {
    return axisModel.get('type') === 'category';
}

// Avoid typo.
var SOURCE_FORMAT_ORIGINAL = 'original';
var SOURCE_FORMAT_ARRAY_ROWS = 'arrayRows';
var SOURCE_FORMAT_OBJECT_ROWS = 'objectRows';
var SOURCE_FORMAT_KEYED_COLUMNS = 'keyedColumns';
var SOURCE_FORMAT_UNKNOWN = 'unknown';
// ??? CHANGE A NAME
var SOURCE_FORMAT_TYPED_ARRAY = 'typedArray';

var SERIES_LAYOUT_BY_COLUMN = 'column';
var SERIES_LAYOUT_BY_ROW = 'row';

/**
 * [sourceFormat]
 *
 * + "original":
 * This format is only used in series.data, where
 * itemStyle can be specified in data item.
 *
 * + "arrayRows":
 * [
 *     ['product', 'score', 'amount'],
 *     ['Matcha Latte', 89.3, 95.8],
 *     ['Milk Tea', 92.1, 89.4],
 *     ['Cheese Cocoa', 94.4, 91.2],
 *     ['Walnut Brownie', 85.4, 76.9]
 * ]
 *
 * + "objectRows":
 * [
 *     {product: 'Matcha Latte', score: 89.3, amount: 95.8},
 *     {product: 'Milk Tea', score: 92.1, amount: 89.4},
 *     {product: 'Cheese Cocoa', score: 94.4, amount: 91.2},
 *     {product: 'Walnut Brownie', score: 85.4, amount: 76.9}
 * ]
 *
 * + "keyedColumns":
 * {
 *     'product': ['Matcha Latte', 'Milk Tea', 'Cheese Cocoa', 'Walnut Brownie'],
 *     'count': [823, 235, 1042, 988],
 *     'score': [95.8, 81.4, 91.2, 76.9]
 * }
 *
 * + "typedArray"
 *
 * + "unknown"
 */

/**
 * @constructor
 * @param {Object} fields
 * @param {string} fields.sourceFormat
 * @param {Array|Object} fields.fromDataset
 * @param {Array|Object} [fields.data]
 * @param {string} [seriesLayoutBy='column']
 * @param {Array.<Object|string>} [dimensionsDefine]
 * @param {Objet|HashMap} [encodeDefine]
 * @param {number} [startIndex=0]
 * @param {number} [dimensionsDetectCount]
 */
function Source(fields) {

    /**
     * @type {boolean}
     */
    this.fromDataset = fields.fromDataset;

    /**
     * Not null/undefined.
     * @type {Array|Object}
     */
    this.data = fields.data || (
        fields.sourceFormat === SOURCE_FORMAT_KEYED_COLUMNS ? {} : []
    );

    /**
     * See also "detectSourceFormat".
     * Not null/undefined.
     * @type {string}
     */
    this.sourceFormat = fields.sourceFormat || SOURCE_FORMAT_UNKNOWN;

    /**
     * 'row' or 'column'
     * Not null/undefined.
     * @type {string} seriesLayoutBy
     */
    this.seriesLayoutBy = fields.seriesLayoutBy || SERIES_LAYOUT_BY_COLUMN;

    /**
     * dimensions definition in option.
     * can be null/undefined.
     * @type {Array.<Object|string>}
     */
    this.dimensionsDefine = fields.dimensionsDefine;

    /**
     * encode definition in option.
     * can be null/undefined.
     * @type {Objet|HashMap}
     */
    this.encodeDefine = fields.encodeDefine && createHashMap(fields.encodeDefine);

    /**
     * Not null/undefined, uint.
     * @type {number}
     */
    this.startIndex = fields.startIndex || 0;

    /**
     * Can be null/undefined (when unknown), uint.
     * @type {number}
     */
    this.dimensionsDetectCount = fields.dimensionsDetectCount;
}

/**
 * Wrap original series data for some compatibility cases.
 */
Source.seriesDataToSource = function (data) {
    return new Source({
        data: data,
        sourceFormat: isTypedArray(data)
            ? SOURCE_FORMAT_TYPED_ARRAY
            : SOURCE_FORMAT_ORIGINAL,
        fromDataset: false
    });
};

enableClassCheck(Source);

var inner$3 = makeInner();

/**
 * @see {module:echarts/data/Source}
 * @param {module:echarts/component/dataset/DatasetModel} datasetModel
 * @return {string} sourceFormat
 */
function detectSourceFormat(datasetModel) {
    var data = datasetModel.option.source;
    var sourceFormat = SOURCE_FORMAT_UNKNOWN;

    if (isTypedArray(data)) {
        sourceFormat = SOURCE_FORMAT_TYPED_ARRAY;
    }
    else if (isArray(data)) {
        // FIXME Whether tolerate null in top level array?
        for (var i = 0, len = data.length; i < len; i++) {
            var item = data[i];

            if (item == null) {
                continue;
            }
            else if (isArray(item)) {
                sourceFormat = SOURCE_FORMAT_ARRAY_ROWS;
                break;
            }
            else if (isObject$1(item)) {
                sourceFormat = SOURCE_FORMAT_OBJECT_ROWS;
                break;
            }
        }
    }
    else if (isObject$1(data)) {
        for (var key in data) {
            if (data.hasOwnProperty(key) && isArrayLike(data[key])) {
                sourceFormat = SOURCE_FORMAT_KEYED_COLUMNS;
                break;
            }
        }
    }
    else if (data != null) {
        throw new Error('Invalid data');
    }

    inner$3(datasetModel).sourceFormat = sourceFormat;
}

/**
 * [Scenarios]:
 * (1) Provide source data directly:
 *     series: {
 *         encode: {...},
 *         dimensions: [...]
 *         seriesLayoutBy: 'row',
 *         data: [[...]]
 *     }
 * (2) Refer to datasetModel.
 *     series: [{
 *         encode: {...}
 *         // Ignore datasetIndex means `datasetIndex: 0`
 *         // and the dimensions defination in dataset is used
 *     }, {
 *         encode: {...},
 *         seriesLayoutBy: 'column',
 *         datasetIndex: 1
 *     }]
 *
 * Get data from series itself or datset.
 * @return {module:echarts/data/Source} source
 */
function getSource(seriesModel) {
    return inner$3(seriesModel).source;
}

/**
 * MUST be called before mergeOption of all series.
 * @param {module:echarts/model/Global} ecModel
 */
function resetSourceDefaulter(ecModel) {
    // `datasetMap` is used to make default encode.
    inner$3(ecModel).datasetMap = createHashMap();
}

/**
 * [Caution]:
 * MUST be called after series option merged and
 * before "series.getInitailData()" called.
 *
 * [The rule of making default encode]:
 * Category axis (if exists) alway map to the first dimension.
 * Each other axis occupies a subsequent dimension.
 *
 * [Why make default encode]:
 * Simplify the typing of encode in option, avoiding the case like that:
 * series: [{encode: {x: 0, y: 1}}, {encode: {x: 0, y: 2}}, {encode: {x: 0, y: 3}}],
 * where the "y" have to be manually typed as "1, 2, 3, ...".
 *
 * @param {module:echarts/model/Series} seriesModel
 */
function prepareSource(seriesModel) {
    var seriesOption = seriesModel.option;

    var data = seriesOption.data;
    var sourceFormat = isTypedArray(data)
        ? SOURCE_FORMAT_TYPED_ARRAY : SOURCE_FORMAT_ORIGINAL;
    var fromDataset = false;

    var seriesLayoutBy = seriesOption.seriesLayoutBy;
    var sourceHeader = seriesOption.sourceHeader;
    var dimensionsDefine = seriesOption.dimensions;

    var datasetModel = getDatasetModel(seriesModel);
    if (datasetModel) {
        var datasetOption = datasetModel.option;

        data = datasetOption.source;
        sourceFormat = inner$3(datasetModel).sourceFormat;
        fromDataset = true;

        // These settings from series has higher priority.
        seriesLayoutBy = seriesLayoutBy || datasetOption.seriesLayoutBy;
        sourceHeader == null && (sourceHeader = datasetOption.sourceHeader);
        dimensionsDefine = dimensionsDefine || datasetOption.dimensions;
    }

    var completeResult = completeBySourceData(
        data, sourceFormat, seriesLayoutBy, sourceHeader, dimensionsDefine
    );

    // Note: dataset option does not have `encode`.
    var encodeDefine = seriesOption.encode;
    if (!encodeDefine && datasetModel) {
        encodeDefine = makeDefaultEncode(
            seriesModel, datasetModel, data, sourceFormat, seriesLayoutBy, completeResult
        );
    }

    inner$3(seriesModel).source = new Source({
        data: data,
        fromDataset: fromDataset,
        seriesLayoutBy: seriesLayoutBy,
        sourceFormat: sourceFormat,
        dimensionsDefine: completeResult.dimensionsDefine,
        startIndex: completeResult.startIndex,
        dimensionsDetectCount: completeResult.dimensionsDetectCount,
        encodeDefine: encodeDefine
    });
}

// return {startIndex, dimensionsDefine, dimensionsCount}
function completeBySourceData(data, sourceFormat, seriesLayoutBy, sourceHeader, dimensionsDefine) {
    if (!data) {
        return {dimensionsDefine: normalizeDimensionsDefine(dimensionsDefine)};
    }

    var dimensionsDetectCount;
    var startIndex;
    var findPotentialName;

    if (sourceFormat === SOURCE_FORMAT_ARRAY_ROWS) {
        // Rule: Most of the first line are string: it is header.
        // Caution: consider a line with 5 string and 1 number,
        // it still can not be sure it is a head, because the
        // 5 string may be 5 values of category columns.
        if (sourceHeader === 'auto' || sourceHeader == null) {
            arrayRowsTravelFirst(function (val) {
                // '-' is regarded as null/undefined.
                if (val != null && val !== '-') {
                    if (isString(val)) {
                        startIndex == null && (startIndex = 1);
                    }
                    else {
                        startIndex = 0;
                    }
                }
            // 10 is an experience number, avoid long loop.
            }, seriesLayoutBy, data, 10);
        }
        else {
            startIndex = sourceHeader ? 1 : 0;
        }

        if (!dimensionsDefine && startIndex === 1) {
            dimensionsDefine = [];
            arrayRowsTravelFirst(function (val, index) {
                dimensionsDefine[index] = val != null ? val : '';
            }, seriesLayoutBy, data);
        }

        dimensionsDetectCount = dimensionsDefine
            ? dimensionsDefine.length
            : seriesLayoutBy === SERIES_LAYOUT_BY_ROW
            ? data.length
            : data[0]
            ? data[0].length
            : null;
    }
    else if (sourceFormat === SOURCE_FORMAT_OBJECT_ROWS) {
        if (!dimensionsDefine) {
            dimensionsDefine = objectRowsCollectDimensions(data);
            findPotentialName = true;
        }
    }
    else if (sourceFormat === SOURCE_FORMAT_KEYED_COLUMNS) {
        if (!dimensionsDefine) {
            dimensionsDefine = [];
            findPotentialName = true;
            each$1(data, function (colArr, key) {
                dimensionsDefine.push(key);
            });
        }
    }
    else if (sourceFormat === SOURCE_FORMAT_ORIGINAL) {
        var value0 = getDataItemValue(data[0]);
        dimensionsDetectCount = isArray(value0) && value0.length || 1;
    }
    else if (sourceFormat === SOURCE_FORMAT_TYPED_ARRAY) {
        if (__DEV__) {
            assert$1(!!dimensionsDefine, 'dimensions must be given if data is TypedArray.');
        }
    }

    var potentialNameDimIndex;
    if (findPotentialName) {
        each$1(dimensionsDefine, function (dim, idx) {
            if ((isObject$1(dim) ? dim.name : dim) === 'name') {
                potentialNameDimIndex = idx;
            }
        });
    }

    return {
        startIndex: startIndex,
        dimensionsDefine: normalizeDimensionsDefine(dimensionsDefine),
        dimensionsDetectCount: dimensionsDetectCount,
        potentialNameDimIndex: potentialNameDimIndex
        // TODO: potentialIdDimIdx
    };
}

// Consider dimensions defined like ['A', 'price', 'B', 'price', 'C', 'price'],
// which is reasonable. But dimension name is duplicated.
// Returns undefined or an array contains only object without null/undefiend or string.
function normalizeDimensionsDefine(dimensionsDefine) {
    if (!dimensionsDefine) {
        // The meaning of null/undefined is different from empty array.
        return;
    }
    var nameMap = createHashMap();
    return map(dimensionsDefine, function (item, index) {
        item = extend({}, isObject$1(item) ? item : {name: item});

        // User can set null in dimensions.
        // We dont auto specify name, othewise a given name may
        // cause it be refered unexpectedly.
        if (item.name == null) {
            return item;
        }

        // Also consider number form like 2012.
        item.name += '';
        // User may also specify displayName.
        // displayName will always exists except user not
        // specified or dim name is not specified or detected.
        // (A auto generated dim name will not be used as
        // displayName).
        if (item.displayName == null) {
            item.displayName = item.name;
        }

        var exist = nameMap.get(item.name);
        if (!exist) {
            nameMap.set(item.name, {count: 1});
        }
        else {
            item.name += '-' + exist.count++;
        }

        return item;
    });
}

function arrayRowsTravelFirst(cb, seriesLayoutBy, data, maxLoop) {
    maxLoop == null && (maxLoop = Infinity);
    if (seriesLayoutBy === SERIES_LAYOUT_BY_ROW) {
        for (var i = 0; i < data.length && i < maxLoop; i++) {
            cb(data[i] ? data[i][0] : null, i);
        }
    }
    else {
        var value0 = data[0] || [];
        for (var i = 0; i < value0.length && i < maxLoop; i++) {
            cb(value0[i], i);
        }
    }
}

function objectRowsCollectDimensions(data) {
    var firstIndex = 0;
    var obj;
    while (firstIndex < data.length && !(obj = data[firstIndex++])) {} // jshint ignore: line
    if (obj) {
        var dimensions = [];
        each$1(obj, function (value, key) {
            dimensions.push(key);
        });
        return dimensions;
    }
}

// ??? TODO merge to completedimensions, where also has
// default encode making logic. And the default rule
// should depends on series? consider 'map'.
function makeDefaultEncode(
    seriesModel, datasetModel, data, sourceFormat, seriesLayoutBy, completeResult
) {
    var coordSysDefine = getCoordSysDefineBySeries(seriesModel);
    var encode = {};
    // var encodeTooltip = [];
    // var encodeLabel = [];
    var encodeItemName = [];
    var encodeSeriesName = [];
    var seriesType = seriesModel.subType;

    // ??? TODO refactor: provide by series itself.
    // Consider the case: 'map' series is based on geo coordSys,
    // 'graph', 'heatmap' can be based on cartesian. But can not
    // give default rule simply here.
    var nSeriesMap = createHashMap(['pie', 'map', 'funnel']);
    var cSeriesMap = createHashMap([
        'line', 'bar', 'pictorialBar', 'scatter', 'effectScatter', 'candlestick', 'boxplot'
    ]);

    // Usually in this case series will use the first data
    // dimension as the "value" dimension, or other default
    // processes respectively.
    if (coordSysDefine && cSeriesMap.get(seriesType) != null) {
        var ecModel = seriesModel.ecModel;
        var datasetMap = inner$3(ecModel).datasetMap;
        var key = datasetModel.uid + '_' + seriesLayoutBy;
        var datasetRecord = datasetMap.get(key)
            || datasetMap.set(key, {categoryWayDim: 1, valueWayDim: 0});

        // TODO
        // Auto detect first time axis and do arrangement.
        each$1(coordSysDefine.coordSysDims, function (coordDim) {
            // In value way.
            if (coordSysDefine.firstCategoryDimIndex == null) {
                var dataDim = datasetRecord.valueWayDim++;
                encode[coordDim] = dataDim;

                // ??? TODO give a better default series name rule?
                // especially when encode x y specified.
                // consider: when mutiple series share one dimension
                // category axis, series name should better use
                // the other dimsion name. On the other hand, use
                // both dimensions name.

                encodeSeriesName.push(dataDim);
                // encodeTooltip.push(dataDim);
                // encodeLabel.push(dataDim);
            }
            // In category way, category axis.
            else if (coordSysDefine.categoryAxisMap.get(coordDim)) {
                encode[coordDim] = 0;
                encodeItemName.push(0);
            }
            // In category way, non-category axis.
            else {
                var dataDim = datasetRecord.categoryWayDim++;
                encode[coordDim] = dataDim;
                // encodeTooltip.push(dataDim);
                // encodeLabel.push(dataDim);
                encodeSeriesName.push(dataDim);
            }
        });
    }
    // Do not make a complex rule! Hard to code maintain and not necessary.
    // ??? TODO refactor: provide by series itself.
    // [{name: ..., value: ...}, ...] like:
    else if (nSeriesMap.get(seriesType) != null) {
        // Find the first not ordinal. (5 is an experience value)
        var firstNotOrdinal;
        for (var i = 0; i < 5 && firstNotOrdinal == null; i++) {
            if (!doGuessOrdinal(
                data, sourceFormat, seriesLayoutBy,
                completeResult.dimensionsDefine, completeResult.startIndex, i
            )) {
                firstNotOrdinal = i;
            }
        }
        if (firstNotOrdinal != null) {
            encode.value = firstNotOrdinal;
            var nameDimIndex = completeResult.potentialNameDimIndex
                || Math.max(firstNotOrdinal - 1, 0);
            // By default, label use itemName in charts.
            // So we dont set encodeLabel here.
            encodeSeriesName.push(nameDimIndex);
            encodeItemName.push(nameDimIndex);
            // encodeTooltip.push(firstNotOrdinal);
        }
    }

    // encodeTooltip.length && (encode.tooltip = encodeTooltip);
    // encodeLabel.length && (encode.label = encodeLabel);
    encodeItemName.length && (encode.itemName = encodeItemName);
    encodeSeriesName.length && (encode.seriesName = encodeSeriesName);

    return encode;
}

/**
 * If return null/undefined, indicate that should not use datasetModel.
 */
function getDatasetModel(seriesModel) {
    var option = seriesModel.option;
    // Caution: consider the scenario:
    // A dataset is declared and a series is not expected to use the dataset,
    // and at the beginning `setOption({series: { noData })` (just prepare other
    // option but no data), then `setOption({series: {data: [...]}); In this case,
    // the user should set an empty array to avoid that dataset is used by default.
    var thisData = option.data;
    if (!thisData) {
        return seriesModel.ecModel.getComponent('dataset', option.datasetIndex || 0);
    }
}

/**
 * The rule should not be complex, otherwise user might not
 * be able to known where the data is wrong.
 * The code is ugly, but how to make it neat?
 *
 * @param {module:echars/data/Source} source
 * @param {number} dimIndex
 * @return {boolean} Whether ordinal.
 */
function guessOrdinal(source, dimIndex) {
    return doGuessOrdinal(
        source.data,
        source.sourceFormat,
        source.seriesLayoutBy,
        source.dimensionsDefine,
        source.startIndex,
        dimIndex
    );
}

// dimIndex may be overflow source data.
function doGuessOrdinal(
    data, sourceFormat, seriesLayoutBy, dimensionsDefine, startIndex, dimIndex
) {
    var result;
    // Experience value.
    var maxLoop = 5;

    if (isTypedArray(data)) {
        return false;
    }

    // When sourceType is 'objectRows' or 'keyedColumns', dimensionsDefine
    // always exists in source.
    var dimName;
    if (dimensionsDefine) {
        dimName = dimensionsDefine[dimIndex];
        dimName = isObject$1(dimName) ? dimName.name : dimName;
    }

    if (sourceFormat === SOURCE_FORMAT_ARRAY_ROWS) {
        if (seriesLayoutBy === SERIES_LAYOUT_BY_ROW) {
            var sample = data[dimIndex];
            for (var i = 0; i < (sample || []).length && i < maxLoop; i++) {
                if ((result = detectValue(sample[startIndex + i])) != null) {
                    return result;
                }
            }
        }
        else {
            for (var i = 0; i < data.length && i < maxLoop; i++) {
                var row = data[startIndex + i];
                if (row && (result = detectValue(row[dimIndex])) != null) {
                    return result;
                }
            }
        }
    }
    else if (sourceFormat === SOURCE_FORMAT_OBJECT_ROWS) {
        if (!dimName) {
            return;
        }
        for (var i = 0; i < data.length && i < maxLoop; i++) {
            var item = data[i];
            if (item && (result = detectValue(item[dimName])) != null) {
                return result;
            }
        }
    }
    else if (sourceFormat === SOURCE_FORMAT_KEYED_COLUMNS) {
        if (!dimName) {
            return;
        }
        var sample = data[dimName];
        if (!sample || isTypedArray(sample)) {
            return false;
        }
        for (var i = 0; i < sample.length && i < maxLoop; i++) {
            if ((result = detectValue(sample[i])) != null) {
                return result;
            }
        }
    }
    else if (sourceFormat === SOURCE_FORMAT_ORIGINAL) {
        for (var i = 0; i < data.length && i < maxLoop; i++) {
            var item = data[i];
            var val = getDataItemValue(item);
            if (!isArray(val)) {
                return false;
            }
            if ((result = detectValue(val[dimIndex])) != null) {
                return result;
            }
        }
    }

    function detectValue(val) {
        // Consider usage convenience, '1', '2' will be treated as "number".
        // `isFinit('')` get `true`.
        if (val != null && isFinite(val) && val !== '') {
            return false;
        }
        else if (isString(val) && val !== '-') {
            return true;
        }
    }

    return false;
}

/**
 * ECharts global model
 *
 * @module {echarts/model/Global}
 */


/**
 * Caution: If the mechanism should be changed some day, these cases
 * should be considered:
 *
 * (1) In `merge option` mode, if using the same option to call `setOption`
 * many times, the result should be the same (try our best to ensure that).
 * (2) In `merge option` mode, if a component has no id/name specified, it
 * will be merged by index, and the result sequence of the components is
 * consistent to the original sequence.
 * (3) `reset` feature (in toolbox). Find detailed info in comments about
 * `mergeOption` in module:echarts/model/OptionManager.
 */

var OPTION_INNER_KEY = '\0_ec_inner';

/**
 * @alias module:echarts/model/Global
 *
 * @param {Object} option
 * @param {module:echarts/model/Model} parentModel
 * @param {Object} theme
 */
var GlobalModel = Model.extend({

    constructor: GlobalModel,

    init: function (option, parentModel, theme, optionManager) {
        theme = theme || {};

        this.option = null; // Mark as not initialized.

        /**
         * @type {module:echarts/model/Model}
         * @private
         */
        this._theme = new Model(theme);

        /**
         * @type {module:echarts/model/OptionManager}
         */
        this._optionManager = optionManager;
    },

    setOption: function (option, optionPreprocessorFuncs) {
        assert$1(
            !(OPTION_INNER_KEY in option),
            'please use chart.getOption()'
        );

        this._optionManager.setOption(option, optionPreprocessorFuncs);

        this.resetOption(null);
    },

    /**
     * @param {string} type null/undefined: reset all.
     *                      'recreate': force recreate all.
     *                      'timeline': only reset timeline option
     *                      'media': only reset media query option
     * @return {boolean} Whether option changed.
     */
    resetOption: function (type) {
        var optionChanged = false;
        var optionManager = this._optionManager;

        if (!type || type === 'recreate') {
            var baseOption = optionManager.mountOption(type === 'recreate');

            if (!this.option || type === 'recreate') {
                initBase.call(this, baseOption);
            }
            else {
                this.restoreData();
                this.mergeOption(baseOption);
            }
            optionChanged = true;
        }

        if (type === 'timeline' || type === 'media') {
            this.restoreData();
        }

        if (!type || type === 'recreate' || type === 'timeline') {
            var timelineOption = optionManager.getTimelineOption(this);
            timelineOption && (this.mergeOption(timelineOption), optionChanged = true);
        }

        if (!type || type === 'recreate' || type === 'media') {
            var mediaOptions = optionManager.getMediaOption(this, this._api);
            if (mediaOptions.length) {
                each$1(mediaOptions, function (mediaOption) {
                    this.mergeOption(mediaOption, optionChanged = true);
                }, this);
            }
        }

        return optionChanged;
    },

    /**
     * @protected
     */
    mergeOption: function (newOption) {
        var option = this.option;
        var componentsMap = this._componentsMap;
        var newCptTypes = [];

        resetSourceDefaulter(this);

        // If no component class, merge directly.
        // For example: color, animaiton options, etc.
        each$1(newOption, function (componentOption, mainType) {
            if (componentOption == null) {
                return;
            }

            if (!ComponentModel.hasClass(mainType)) {
                // globalSettingTask.dirty();
                option[mainType] = option[mainType] == null
                    ? clone(componentOption)
                    : merge(option[mainType], componentOption, true);
            }
            else if (mainType) {
                newCptTypes.push(mainType);
            }
        });

        ComponentModel.topologicalTravel(
            newCptTypes, ComponentModel.getAllClassMainTypes(), visitComponent, this
        );

        function visitComponent(mainType, dependencies) {

            var newCptOptionList = normalizeToArray(newOption[mainType]);

            var mapResult = mappingToExists(
                componentsMap.get(mainType), newCptOptionList
            );

            makeIdAndName(mapResult);

            // Set mainType and complete subType.
            each$1(mapResult, function (item, index) {
                var opt = item.option;
                if (isObject$1(opt)) {
                    item.keyInfo.mainType = mainType;
                    item.keyInfo.subType = determineSubType(mainType, opt, item.exist);
                }
            });

            var dependentModels = getComponentsByTypes(
                componentsMap, dependencies
            );

            option[mainType] = [];
            componentsMap.set(mainType, []);

            each$1(mapResult, function (resultItem, index) {
                var componentModel = resultItem.exist;
                var newCptOption = resultItem.option;

                assert$1(
                    isObject$1(newCptOption) || componentModel,
                    'Empty component definition'
                );

                // Consider where is no new option and should be merged using {},
                // see removeEdgeAndAdd in topologicalTravel and
                // ComponentModel.getAllClassMainTypes.
                if (!newCptOption) {
                    componentModel.mergeOption({}, this);
                    componentModel.optionUpdated({}, false);
                }
                else {
                    var ComponentModelClass = ComponentModel.getClass(
                        mainType, resultItem.keyInfo.subType, true
                    );

                    if (componentModel && componentModel instanceof ComponentModelClass) {
                        componentModel.name = resultItem.keyInfo.name;
                        // componentModel.settingTask && componentModel.settingTask.dirty();
                        componentModel.mergeOption(newCptOption, this);
                        componentModel.optionUpdated(newCptOption, false);
                    }
                    else {
                        // PENDING Global as parent ?
                        var extraOpt = extend(
                            {
                                dependentModels: dependentModels,
                                componentIndex: index
                            },
                            resultItem.keyInfo
                        );
                        componentModel = new ComponentModelClass(
                            newCptOption, this, this, extraOpt
                        );
                        extend(componentModel, extraOpt);
                        componentModel.init(newCptOption, this, this, extraOpt);

                        // Call optionUpdated after init.
                        // newCptOption has been used as componentModel.option
                        // and may be merged with theme and default, so pass null
                        // to avoid confusion.
                        componentModel.optionUpdated(null, true);
                    }
                }

                componentsMap.get(mainType)[index] = componentModel;
                option[mainType][index] = componentModel.option;
            }, this);

            // Backup series for filtering.
            if (mainType === 'series') {
                createSeriesIndices(this, componentsMap.get('series'));
            }
        }

        this._seriesIndicesMap = createHashMap(
            this._seriesIndices = this._seriesIndices || []
        );
    },

    /**
     * Get option for output (cloned option and inner info removed)
     * @public
     * @return {Object}
     */
    getOption: function () {
        var option = clone(this.option);

        each$1(option, function (opts, mainType) {
            if (ComponentModel.hasClass(mainType)) {
                var opts = normalizeToArray(opts);
                for (var i = opts.length - 1; i >= 0; i--) {
                    // Remove options with inner id.
                    if (isIdInner(opts[i])) {
                        opts.splice(i, 1);
                    }
                }
                option[mainType] = opts;
            }
        });

        delete option[OPTION_INNER_KEY];

        return option;
    },

    /**
     * @return {module:echarts/model/Model}
     */
    getTheme: function () {
        return this._theme;
    },

    /**
     * @param {string} mainType
     * @param {number} [idx=0]
     * @return {module:echarts/model/Component}
     */
    getComponent: function (mainType, idx) {
        var list = this._componentsMap.get(mainType);
        if (list) {
            return list[idx || 0];
        }
    },

    /**
     * If none of index and id and name used, return all components with mainType.
     * @param {Object} condition
     * @param {string} condition.mainType
     * @param {string} [condition.subType] If ignore, only query by mainType
     * @param {number|Array.<number>} [condition.index] Either input index or id or name.
     * @param {string|Array.<string>} [condition.id] Either input index or id or name.
     * @param {string|Array.<string>} [condition.name] Either input index or id or name.
     * @return {Array.<module:echarts/model/Component>}
     */
    queryComponents: function (condition) {
        var mainType = condition.mainType;
        if (!mainType) {
            return [];
        }

        var index = condition.index;
        var id = condition.id;
        var name = condition.name;

        var cpts = this._componentsMap.get(mainType);

        if (!cpts || !cpts.length) {
            return [];
        }

        var result;

        if (index != null) {
            if (!isArray(index)) {
                index = [index];
            }
            result = filter(map(index, function (idx) {
                return cpts[idx];
            }), function (val) {
                return !!val;
            });
        }
        else if (id != null) {
            var isIdArray = isArray(id);
            result = filter(cpts, function (cpt) {
                return (isIdArray && indexOf(id, cpt.id) >= 0)
                    || (!isIdArray && cpt.id === id);
            });
        }
        else if (name != null) {
            var isNameArray = isArray(name);
            result = filter(cpts, function (cpt) {
                return (isNameArray && indexOf(name, cpt.name) >= 0)
                    || (!isNameArray && cpt.name === name);
            });
        }
        else {
            // Return all components with mainType
            result = cpts.slice();
        }

        return filterBySubType(result, condition);
    },

    /**
     * The interface is different from queryComponents,
     * which is convenient for inner usage.
     *
     * @usage
     * var result = findComponents(
     *     {mainType: 'dataZoom', query: {dataZoomId: 'abc'}}
     * );
     * var result = findComponents(
     *     {mainType: 'series', subType: 'pie', query: {seriesName: 'uio'}}
     * );
     * var result = findComponents(
     *     {mainType: 'series'},
     *     function (model, index) {...}
     * );
     * // result like [component0, componnet1, ...]
     *
     * @param {Object} condition
     * @param {string} condition.mainType Mandatory.
     * @param {string} [condition.subType] Optional.
     * @param {Object} [condition.query] like {xxxIndex, xxxId, xxxName},
     *        where xxx is mainType.
     *        If query attribute is null/undefined or has no index/id/name,
     *        do not filtering by query conditions, which is convenient for
     *        no-payload situations or when target of action is global.
     * @param {Function} [condition.filter] parameter: component, return boolean.
     * @return {Array.<module:echarts/model/Component>}
     */
    findComponents: function (condition) {
        var query = condition.query;
        var mainType = condition.mainType;

        var queryCond = getQueryCond(query);
        var result = queryCond
            ? this.queryComponents(queryCond)
            : this._componentsMap.get(mainType);

        return doFilter(filterBySubType(result, condition));

        function getQueryCond(q) {
            var indexAttr = mainType + 'Index';
            var idAttr = mainType + 'Id';
            var nameAttr = mainType + 'Name';
            return q && (
                    q[indexAttr] != null
                    || q[idAttr] != null
                    || q[nameAttr] != null
                )
                ? {
                    mainType: mainType,
                    // subType will be filtered finally.
                    index: q[indexAttr],
                    id: q[idAttr],
                    name: q[nameAttr]
                }
                : null;
        }

        function doFilter(res) {
            return condition.filter
                    ? filter(res, condition.filter)
                    : res;
        }
    },

    /**
     * @usage
     * eachComponent('legend', function (legendModel, index) {
     *     ...
     * });
     * eachComponent(function (componentType, model, index) {
     *     // componentType does not include subType
     *     // (componentType is 'xxx' but not 'xxx.aa')
     * });
     * eachComponent(
     *     {mainType: 'dataZoom', query: {dataZoomId: 'abc'}},
     *     function (model, index) {...}
     * );
     * eachComponent(
     *     {mainType: 'series', subType: 'pie', query: {seriesName: 'uio'}},
     *     function (model, index) {...}
     * );
     *
     * @param {string|Object=} mainType When mainType is object, the definition
     *                                  is the same as the method 'findComponents'.
     * @param {Function} cb
     * @param {*} context
     */
    eachComponent: function (mainType, cb, context) {
        var componentsMap = this._componentsMap;

        if (typeof mainType === 'function') {
            context = cb;
            cb = mainType;
            componentsMap.each(function (components, componentType) {
                each$1(components, function (component, index) {
                    cb.call(context, componentType, component, index);
                });
            });
        }
        else if (isString(mainType)) {
            each$1(componentsMap.get(mainType), cb, context);
        }
        else if (isObject$1(mainType)) {
            var queryResult = this.findComponents(mainType);
            each$1(queryResult, cb, context);
        }
    },

    /**
     * @param {string} name
     * @return {Array.<module:echarts/model/Series>}
     */
    getSeriesByName: function (name) {
        var series = this._componentsMap.get('series');
        return filter(series, function (oneSeries) {
            return oneSeries.name === name;
        });
    },

    /**
     * @param {number} seriesIndex
     * @return {module:echarts/model/Series}
     */
    getSeriesByIndex: function (seriesIndex) {
        return this._componentsMap.get('series')[seriesIndex];
    },

    /**
     * Get series list before filtered by type.
     * FIXME: rename to getRawSeriesByType?
     *
     * @param {string} subType
     * @return {Array.<module:echarts/model/Series>}
     */
    getSeriesByType: function (subType) {
        var series = this._componentsMap.get('series');
        return filter(series, function (oneSeries) {
            return oneSeries.subType === subType;
        });
    },

    /**
     * @return {Array.<module:echarts/model/Series>}
     */
    getSeries: function () {
        return this._componentsMap.get('series').slice();
    },

    /**
     * @return {number}
     */
    getSeriesCount: function () {
        return this._componentsMap.get('series').length;
    },

    /**
     * After filtering, series may be different
     * frome raw series.
     *
     * @param {Function} cb
     * @param {*} context
     */
    eachSeries: function (cb, context) {
        assertSeriesInitialized(this);
        each$1(this._seriesIndices, function (rawSeriesIndex) {
            var series = this._componentsMap.get('series')[rawSeriesIndex];
            cb.call(context, series, rawSeriesIndex);
        }, this);
    },

    /**
     * Iterate raw series before filtered.
     *
     * @param {Function} cb
     * @param {*} context
     */
    eachRawSeries: function (cb, context) {
        each$1(this._componentsMap.get('series'), cb, context);
    },

    /**
     * After filtering, series may be different.
     * frome raw series.
     *
     * @parma {string} subType
     * @param {Function} cb
     * @param {*} context
     */
    eachSeriesByType: function (subType, cb, context) {
        assertSeriesInitialized(this);
        each$1(this._seriesIndices, function (rawSeriesIndex) {
            var series = this._componentsMap.get('series')[rawSeriesIndex];
            if (series.subType === subType) {
                cb.call(context, series, rawSeriesIndex);
            }
        }, this);
    },

    /**
     * Iterate raw series before filtered of given type.
     *
     * @parma {string} subType
     * @param {Function} cb
     * @param {*} context
     */
    eachRawSeriesByType: function (subType, cb, context) {
        return each$1(this.getSeriesByType(subType), cb, context);
    },

    /**
     * @param {module:echarts/model/Series} seriesModel
     */
    isSeriesFiltered: function (seriesModel) {
        assertSeriesInitialized(this);
        return this._seriesIndicesMap.get(seriesModel.componentIndex) == null;
    },

    /**
     * @return {Array.<number>}
     */
    getCurrentSeriesIndices: function () {
        return (this._seriesIndices || []).slice();
    },

    /**
     * @param {Function} cb
     * @param {*} context
     */
    filterSeries: function (cb, context) {
        assertSeriesInitialized(this);
        var filteredSeries = filter(
            this._componentsMap.get('series'), cb, context
        );
        createSeriesIndices(this, filteredSeries);
    },

    restoreData: function (payload) {
        var componentsMap = this._componentsMap;

        createSeriesIndices(this, componentsMap.get('series'));

        var componentTypes = [];
        componentsMap.each(function (components, componentType) {
            componentTypes.push(componentType);
        });

        ComponentModel.topologicalTravel(
            componentTypes,
            ComponentModel.getAllClassMainTypes(),
            function (componentType, dependencies) {
                each$1(componentsMap.get(componentType), function (component) {
                    (componentType !== 'series' || !isNotTargetSeries(component, payload))
                        && component.restoreData();
                });
            }
        );
    }

});

function isNotTargetSeries(seriesModel, payload) {
    if (payload) {
        var index = payload.seiresIndex;
        var id = payload.seriesId;
        var name = payload.seriesName;
        return (index != null && seriesModel.componentIndex !== index)
            || (id != null && seriesModel.id !== id)
            || (name != null && seriesModel.name !== name);
    }
}

/**
 * @inner
 */
function mergeTheme(option, theme) {
    // PENDING
    // NOT use `colorLayer` in theme if option has `color`
    var notMergeColorLayer = option.color && !option.colorLayer;

    each$1(theme, function (themeItem, name) {
        if (name === 'colorLayer' && notMergeColorLayer) {
            return;
        }
        // 如果有 component model 则把具体的 merge 逻辑交给该 model 处理
        if (!ComponentModel.hasClass(name)) {
            if (typeof themeItem === 'object') {
                option[name] = !option[name]
                    ? clone(themeItem)
                    : merge(option[name], themeItem, false);
            }
            else {
                if (option[name] == null) {
                    option[name] = themeItem;
                }
            }
        }
    });
}

function initBase(baseOption) {
    baseOption = baseOption;

    // Using OPTION_INNER_KEY to mark that this option can not be used outside,
    // i.e. `chart.setOption(chart.getModel().option);` is forbiden.
    this.option = {};
    this.option[OPTION_INNER_KEY] = 1;

    /**
     * Init with series: [], in case of calling findSeries method
     * before series initialized.
     * @type {Object.<string, Array.<module:echarts/model/Model>>}
     * @private
     */
    this._componentsMap = createHashMap({series: []});

    /**
     * Mapping between filtered series list and raw series list.
     * key: filtered series indices, value: raw series indices.
     * @type {Array.<nubmer>}
     * @private
     */
    this._seriesIndices;

    this._seriesIndicesMap;

    mergeTheme(baseOption, this._theme.option);

    // TODO Needs clone when merging to the unexisted property
    merge(baseOption, globalDefault, false);

    this.mergeOption(baseOption);
}

/**
 * @inner
 * @param {Array.<string>|string} types model types
 * @return {Object} key: {string} type, value: {Array.<Object>} models
 */
function getComponentsByTypes(componentsMap, types) {
    if (!isArray(types)) {
        types = types ? [types] : [];
    }

    var ret = {};
    each$1(types, function (type) {
        ret[type] = (componentsMap.get(type) || []).slice();
    });

    return ret;
}

/**
 * @inner
 */
function determineSubType(mainType, newCptOption, existComponent) {
    var subType = newCptOption.type
        ? newCptOption.type
        : existComponent
        ? existComponent.subType
        // Use determineSubType only when there is no existComponent.
        : ComponentModel.determineSubType(mainType, newCptOption);

    // tooltip, markline, markpoint may always has no subType
    return subType;
}

/**
 * @inner
 */
function createSeriesIndices(ecModel, seriesModels) {
    ecModel._seriesIndicesMap = createHashMap(
        ecModel._seriesIndices = map(seriesModels, function (series) {
            return series.componentIndex;
        }) || []
    );
}

/**
 * @inner
 */
function filterBySubType(components, condition) {
    // Using hasOwnProperty for restrict. Consider
    // subType is undefined in user payload.
    return condition.hasOwnProperty('subType')
        ? filter(components, function (cpt) {
            return cpt.subType === condition.subType;
        })
        : components;
}

/**
 * @inner
 */
function assertSeriesInitialized(ecModel) {
    // Components that use _seriesIndices should depends on series component,
    // which make sure that their initialization is after series.
    if (__DEV__) {
        if (!ecModel._seriesIndices) {
            throw new Error('Option should contains series.');
        }
    }
}

mixin(GlobalModel, colorPaletteMixin);

var echartsAPIList = [
    'getDom', 'getZr', 'getWidth', 'getHeight', 'getDevicePixelRatio', 'dispatchAction', 'isDisposed',
    'on', 'off', 'getDataURL', 'getConnectedDataURL', 'getModel', 'getOption',
    'getViewOfComponentModel', 'getViewOfSeriesModel'
];
// And `getCoordinateSystems` and `getComponentByElement` will be injected in echarts.js

function ExtensionAPI(chartInstance) {
    each$1(echartsAPIList, function (name) {
        this[name] = bind(chartInstance[name], chartInstance);
    }, this);
}

var coordinateSystemCreators = {};

function CoordinateSystemManager() {

    this._coordinateSystems = [];
}

CoordinateSystemManager.prototype = {

    constructor: CoordinateSystemManager,

    create: function (ecModel, api) {
        var coordinateSystems = [];
        each$1(coordinateSystemCreators, function (creater, type) {
            var list = creater.create(ecModel, api);
            coordinateSystems = coordinateSystems.concat(list || []);
        });

        this._coordinateSystems = coordinateSystems;
    },

    update: function (ecModel, api) {
        each$1(this._coordinateSystems, function (coordSys) {
            coordSys.update && coordSys.update(ecModel, api);
        });
    },

    getCoordinateSystems: function () {
        return this._coordinateSystems.slice();
    }
};

CoordinateSystemManager.register = function (type, coordinateSystemCreator) {
    coordinateSystemCreators[type] = coordinateSystemCreator;
};

CoordinateSystemManager.get = function (type) {
    return coordinateSystemCreators[type];
};

/**
 * ECharts option manager
 *
 * @module {echarts/model/OptionManager}
 */


var each$4 = each$1;
var clone$3 = clone;
var map$1 = map;
var merge$1 = merge;

var QUERY_REG = /^(min|max)?(.+)$/;

/**
 * TERM EXPLANATIONS:
 *
 * [option]:
 *
 *     An object that contains definitions of components. For example:
 *     var option = {
 *         title: {...},
 *         legend: {...},
 *         visualMap: {...},
 *         series: [
 *             {data: [...]},
 *             {data: [...]},
 *             ...
 *         ]
 *     };
 *
 * [rawOption]:
 *
 *     An object input to echarts.setOption. 'rawOption' may be an
 *     'option', or may be an object contains multi-options. For example:
 *     var option = {
 *         baseOption: {
 *             title: {...},
 *             legend: {...},
 *             series: [
 *                 {data: [...]},
 *                 {data: [...]},
 *                 ...
 *             ]
 *         },
 *         timeline: {...},
 *         options: [
 *             {title: {...}, series: {data: [...]}},
 *             {title: {...}, series: {data: [...]}},
 *             ...
 *         ],
 *         media: [
 *             {
 *                 query: {maxWidth: 320},
 *                 option: {series: {x: 20}, visualMap: {show: false}}
 *             },
 *             {
 *                 query: {minWidth: 320, maxWidth: 720},
 *                 option: {series: {x: 500}, visualMap: {show: true}}
 *             },
 *             {
 *                 option: {series: {x: 1200}, visualMap: {show: true}}
 *             }
 *         ]
 *     };
 *
 * @alias module:echarts/model/OptionManager
 * @param {module:echarts/ExtensionAPI} api
 */
function OptionManager(api) {

    /**
     * @private
     * @type {module:echarts/ExtensionAPI}
     */
    this._api = api;

    /**
     * @private
     * @type {Array.<number>}
     */
    this._timelineOptions = [];

    /**
     * @private
     * @type {Array.<Object>}
     */
    this._mediaList = [];

    /**
     * @private
     * @type {Object}
     */
    this._mediaDefault;

    /**
     * -1, means default.
     * empty means no media.
     * @private
     * @type {Array.<number>}
     */
    this._currentMediaIndices = [];

    /**
     * @private
     * @type {Object}
     */
    this._optionBackup;

    /**
     * @private
     * @type {Object}
     */
    this._newBaseOption;
}

// timeline.notMerge is not supported in ec3. Firstly there is rearly
// case that notMerge is needed. Secondly supporting 'notMerge' requires
// rawOption cloned and backuped when timeline changed, which does no
// good to performance. What's more, that both timeline and setOption
// method supply 'notMerge' brings complex and some problems.
// Consider this case:
// (step1) chart.setOption({timeline: {notMerge: false}, ...}, false);
// (step2) chart.setOption({timeline: {notMerge: true}, ...}, false);

OptionManager.prototype = {

    constructor: OptionManager,

    /**
     * @public
     * @param {Object} rawOption Raw option.
     * @param {module:echarts/model/Global} ecModel
     * @param {Array.<Function>} optionPreprocessorFuncs
     * @return {Object} Init option
     */
    setOption: function (rawOption, optionPreprocessorFuncs) {
        if (rawOption) {
            // That set dat primitive is dangerous if user reuse the data when setOption again.
            each$1(normalizeToArray(rawOption.series), function (series) {
                series && series.data && isTypedArray(series.data) && setAsPrimitive(series.data);
            });
        }

        // Caution: some series modify option data, if do not clone,
        // it should ensure that the repeat modify correctly
        // (create a new object when modify itself).
        rawOption = clone$3(rawOption, true);

        // FIXME
        // 如果 timeline options 或者 media 中设置了某个属性，而baseOption中没有设置，则进行警告。

        var oldOptionBackup = this._optionBackup;
        var newParsedOption = parseRawOption.call(
            this, rawOption, optionPreprocessorFuncs, !oldOptionBackup
        );
        this._newBaseOption = newParsedOption.baseOption;

        // For setOption at second time (using merge mode);
        if (oldOptionBackup) {
            // Only baseOption can be merged.
            mergeOption(oldOptionBackup.baseOption, newParsedOption.baseOption);

            // For simplicity, timeline options and media options do not support merge,
            // that is, if you `setOption` twice and both has timeline options, the latter
            // timeline opitons will not be merged to the formers, but just substitude them.
            if (newParsedOption.timelineOptions.length) {
                oldOptionBackup.timelineOptions = newParsedOption.timelineOptions;
            }
            if (newParsedOption.mediaList.length) {
                oldOptionBackup.mediaList = newParsedOption.mediaList;
            }
            if (newParsedOption.mediaDefault) {
                oldOptionBackup.mediaDefault = newParsedOption.mediaDefault;
            }
        }
        else {
            this._optionBackup = newParsedOption;
        }
    },

    /**
     * @param {boolean} isRecreate
     * @return {Object}
     */
    mountOption: function (isRecreate) {
        var optionBackup = this._optionBackup;

        // TODO
        // 如果没有reset功能则不clone。

        this._timelineOptions = map$1(optionBackup.timelineOptions, clone$3);
        this._mediaList = map$1(optionBackup.mediaList, clone$3);
        this._mediaDefault = clone$3(optionBackup.mediaDefault);
        this._currentMediaIndices = [];

        return clone$3(isRecreate
            // this._optionBackup.baseOption, which is created at the first `setOption`
            // called, and is merged into every new option by inner method `mergeOption`
            // each time `setOption` called, can be only used in `isRecreate`, because
            // its reliability is under suspicion. In other cases option merge is
            // performed by `model.mergeOption`.
            ? optionBackup.baseOption : this._newBaseOption
        );
    },

    /**
     * @param {module:echarts/model/Global} ecModel
     * @return {Object}
     */
    getTimelineOption: function (ecModel) {
        var option;
        var timelineOptions = this._timelineOptions;

        if (timelineOptions.length) {
            // getTimelineOption can only be called after ecModel inited,
            // so we can get currentIndex from timelineModel.
            var timelineModel = ecModel.getComponent('timeline');
            if (timelineModel) {
                option = clone$3(
                    timelineOptions[timelineModel.getCurrentIndex()],
                    true
                );
            }
        }

        return option;
    },

    /**
     * @param {module:echarts/model/Global} ecModel
     * @return {Array.<Object>}
     */
    getMediaOption: function (ecModel) {
        var ecWidth = this._api.getWidth();
        var ecHeight = this._api.getHeight();
        var mediaList = this._mediaList;
        var mediaDefault = this._mediaDefault;
        var indices = [];
        var result = [];

        // No media defined.
        if (!mediaList.length && !mediaDefault) {
            return result;
        }

        // Multi media may be applied, the latter defined media has higher priority.
        for (var i = 0, len = mediaList.length; i < len; i++) {
            if (applyMediaQuery(mediaList[i].query, ecWidth, ecHeight)) {
                indices.push(i);
            }
        }

        // FIXME
        // 是否mediaDefault应该强制用户设置，否则可能修改不能回归。
        if (!indices.length && mediaDefault) {
            indices = [-1];
        }

        if (indices.length && !indicesEquals(indices, this._currentMediaIndices)) {
            result = map$1(indices, function (index) {
                return clone$3(
                    index === -1 ? mediaDefault.option : mediaList[index].option
                );
            });
        }
        // Otherwise return nothing.

        this._currentMediaIndices = indices;

        return result;
    }
};

function parseRawOption(rawOption, optionPreprocessorFuncs, isNew) {
    var timelineOptions = [];
    var mediaList = [];
    var mediaDefault;
    var baseOption;

    // Compatible with ec2.
    var timelineOpt = rawOption.timeline;

    if (rawOption.baseOption) {
        baseOption = rawOption.baseOption;
    }

    // For timeline
    if (timelineOpt || rawOption.options) {
        baseOption = baseOption || {};
        timelineOptions = (rawOption.options || []).slice();
    }

    // For media query
    if (rawOption.media) {
        baseOption = baseOption || {};
        var media = rawOption.media;
        each$4(media, function (singleMedia) {
            if (singleMedia && singleMedia.option) {
                if (singleMedia.query) {
                    mediaList.push(singleMedia);
                }
                else if (!mediaDefault) {
                    // Use the first media default.
                    mediaDefault = singleMedia;
                }
            }
        });
    }

    // For normal option
    if (!baseOption) {
        baseOption = rawOption;
    }

    // Set timelineOpt to baseOption in ec3,
    // which is convenient for merge option.
    if (!baseOption.timeline) {
        baseOption.timeline = timelineOpt;
    }

    // Preprocess.
    each$4([baseOption].concat(timelineOptions)
        .concat(map(mediaList, function (media) {
            return media.option;
        })),
        function (option) {
            each$4(optionPreprocessorFuncs, function (preProcess) {
                preProcess(option, isNew);
            });
        }
    );

    return {
        baseOption: baseOption,
        timelineOptions: timelineOptions,
        mediaDefault: mediaDefault,
        mediaList: mediaList
    };
}

/**
 * @see <http://www.w3.org/TR/css3-mediaqueries/#media1>
 * Support: width, height, aspectRatio
 * Can use max or min as prefix.
 */
function applyMediaQuery(query, ecWidth, ecHeight) {
    var realMap = {
        width: ecWidth,
        height: ecHeight,
        aspectratio: ecWidth / ecHeight // lowser case for convenientce.
    };

    var applicatable = true;

    each$1(query, function (value, attr) {
        var matched = attr.match(QUERY_REG);

        if (!matched || !matched[1] || !matched[2]) {
            return;
        }

        var operator = matched[1];
        var realAttr = matched[2].toLowerCase();

        if (!compare(realMap[realAttr], value, operator)) {
            applicatable = false;
        }
    });

    return applicatable;
}

function compare(real, expect, operator) {
    if (operator === 'min') {
        return real >= expect;
    }
    else if (operator === 'max') {
        return real <= expect;
    }
    else { // Equals
        return real === expect;
    }
}

function indicesEquals(indices1, indices2) {
    // indices is always order by asc and has only finite number.
    return indices1.join(',') === indices2.join(',');
}

/**
 * Consider case:
 * `chart.setOption(opt1);`
 * Then user do some interaction like dataZoom, dataView changing.
 * `chart.setOption(opt2);`
 * Then user press 'reset button' in toolbox.
 *
 * After doing that all of the interaction effects should be reset, the
 * chart should be the same as the result of invoke
 * `chart.setOption(opt1); chart.setOption(opt2);`.
 *
 * Although it is not able ensure that
 * `chart.setOption(opt1); chart.setOption(opt2);` is equivalents to
 * `chart.setOption(merge(opt1, opt2));` exactly,
 * this might be the only simple way to implement that feature.
 *
 * MEMO: We've considered some other approaches:
 * 1. Each model handle its self restoration but not uniform treatment.
 *     (Too complex in logic and error-prone)
 * 2. Use a shadow ecModel. (Performace expensive)
 */
function mergeOption(oldOption, newOption) {
    newOption = newOption || {};

    each$4(newOption, function (newCptOpt, mainType) {
        if (newCptOpt == null) {
            return;
        }

        var oldCptOpt = oldOption[mainType];

        if (!ComponentModel.hasClass(mainType)) {
            oldOption[mainType] = merge$1(oldCptOpt, newCptOpt, true);
        }
        else {
            newCptOpt = normalizeToArray(newCptOpt);
            oldCptOpt = normalizeToArray(oldCptOpt);

            var mapResult = mappingToExists(oldCptOpt, newCptOpt);

            oldOption[mainType] = map$1(mapResult, function (item) {
                return (item.option && item.exist)
                    ? merge$1(item.exist, item.option, true)
                    : (item.exist || item.option);
            });
        }
    });
}

var each$5 = each$1;
var isObject$3 = isObject$1;

var POSSIBLE_STYLES = [
    'areaStyle', 'lineStyle', 'nodeStyle', 'linkStyle',
    'chordStyle', 'label', 'labelLine'
];

function compatEC2ItemStyle(opt) {
    var itemStyleOpt = opt && opt.itemStyle;
    if (!itemStyleOpt) {
        return;
    }
    for (var i = 0, len = POSSIBLE_STYLES.length; i < len; i++) {
        var styleName = POSSIBLE_STYLES[i];
        var normalItemStyleOpt = itemStyleOpt.normal;
        var emphasisItemStyleOpt = itemStyleOpt.emphasis;
        if (normalItemStyleOpt && normalItemStyleOpt[styleName]) {
            opt[styleName] = opt[styleName] || {};
            if (!opt[styleName].normal) {
                opt[styleName].normal = normalItemStyleOpt[styleName];
            }
            else {
                merge(opt[styleName].normal, normalItemStyleOpt[styleName]);
            }
            normalItemStyleOpt[styleName] = null;
        }
        if (emphasisItemStyleOpt && emphasisItemStyleOpt[styleName]) {
            opt[styleName] = opt[styleName] || {};
            if (!opt[styleName].emphasis) {
                opt[styleName].emphasis = emphasisItemStyleOpt[styleName];
            }
            else {
                merge(opt[styleName].emphasis, emphasisItemStyleOpt[styleName]);
            }
            emphasisItemStyleOpt[styleName] = null;
        }
    }
}

function convertNormalEmphasis(opt, optType, useExtend) {
    if (opt && opt[optType] && (opt[optType].normal || opt[optType].emphasis)) {
        var normalOpt = opt[optType].normal;
        var emphasisOpt = opt[optType].emphasis;

        if (normalOpt) {
            // Timeline controlStyle has other properties besides normal and emphasis
            if (useExtend) {
                opt[optType].normal = opt[optType].emphasis = null;
                defaults(opt[optType], normalOpt);
            }
            else {
                opt[optType] = normalOpt;
            }
        }
        if (emphasisOpt) {
            opt.emphasis = opt.emphasis || {};
            opt.emphasis[optType] = emphasisOpt;
        }
    }
}
function removeEC3NormalStatus(opt) {
    convertNormalEmphasis(opt, 'itemStyle');
    convertNormalEmphasis(opt, 'lineStyle');
    convertNormalEmphasis(opt, 'areaStyle');
    convertNormalEmphasis(opt, 'label');
    convertNormalEmphasis(opt, 'labelLine');
    // treemap
    convertNormalEmphasis(opt, 'upperLabel');
    // graph
    convertNormalEmphasis(opt, 'edgeLabel');
}

function compatTextStyle(opt, propName) {
    // Check whether is not object (string\null\undefined ...)
    var labelOptSingle = isObject$3(opt) && opt[propName];
    var textStyle = isObject$3(labelOptSingle) && labelOptSingle.textStyle;
    if (textStyle) {
        for (var i = 0, len = TEXT_STYLE_OPTIONS.length; i < len; i++) {
            var propName = TEXT_STYLE_OPTIONS[i];
            if (textStyle.hasOwnProperty(propName)) {
                labelOptSingle[propName] = textStyle[propName];
            }
        }
    }
}

function compatEC3CommonStyles(opt) {
    if (opt) {
        removeEC3NormalStatus(opt);
        compatTextStyle(opt, 'label');
        opt.emphasis && compatTextStyle(opt.emphasis, 'label');
    }
}

function processSeries(seriesOpt) {
    if (!isObject$3(seriesOpt)) {
        return;
    }

    compatEC2ItemStyle(seriesOpt);
    removeEC3NormalStatus(seriesOpt);

    compatTextStyle(seriesOpt, 'label');
    // treemap
    compatTextStyle(seriesOpt, 'upperLabel');
    // graph
    compatTextStyle(seriesOpt, 'edgeLabel');
    if (seriesOpt.emphasis) {
        compatTextStyle(seriesOpt.emphasis, 'label');
        // treemap
        compatTextStyle(seriesOpt.emphasis, 'upperLabel');
        // graph
        compatTextStyle(seriesOpt.emphasis, 'edgeLabel');
    }

    var markPoint = seriesOpt.markPoint;
    if (markPoint) {
        compatEC2ItemStyle(markPoint);
        compatEC3CommonStyles(markPoint);
    }

    var markLine = seriesOpt.markLine;
    if (markLine) {
        compatEC2ItemStyle(markLine);
        compatEC3CommonStyles(markLine);
    }

    var markArea = seriesOpt.markArea;
    if (markArea) {
        compatEC3CommonStyles(markArea);
    }

    var data = seriesOpt.data;

    // Break with ec3: if `setOption` again, there may be no `type` in option,
    // then the backward compat based on option type will not be performed.

    if (seriesOpt.type === 'graph') {
        data = data || seriesOpt.nodes;
        var edgeData = seriesOpt.links || seriesOpt.edges;
        if (edgeData && !isTypedArray(edgeData)) {
            for (var i = 0; i < edgeData.length; i++) {
                compatEC3CommonStyles(edgeData[i]);
            }
        }
        each$1(seriesOpt.categories, function (opt) {
            removeEC3NormalStatus(opt);
        });
    }

    if (data && !isTypedArray(data)) {
        for (var i = 0; i < data.length; i++) {
            compatEC3CommonStyles(data[i]);
        }
    }

    // mark point data
    var markPoint = seriesOpt.markPoint;
    if (markPoint && markPoint.data) {
        var mpData = markPoint.data;
        for (var i = 0; i < mpData.length; i++) {
            compatEC3CommonStyles(mpData[i]);
        }
    }
    // mark line data
    var markLine = seriesOpt.markLine;
    if (markLine && markLine.data) {
        var mlData = markLine.data;
        for (var i = 0; i < mlData.length; i++) {
            if (isArray(mlData[i])) {
                compatEC3CommonStyles(mlData[i][0]);
                compatEC3CommonStyles(mlData[i][1]);
            }
            else {
                compatEC3CommonStyles(mlData[i]);
            }
        }
    }

    // Series
    if (seriesOpt.type === 'gauge') {
        compatTextStyle(seriesOpt, 'axisLabel');
        compatTextStyle(seriesOpt, 'title');
        compatTextStyle(seriesOpt, 'detail');
    }
    else if (seriesOpt.type === 'treemap') {
        convertNormalEmphasis(seriesOpt.breadcrumb, 'itemStyle');
        each$1(seriesOpt.levels, function (opt) {
            removeEC3NormalStatus(opt);
        });
    }
    // sunburst starts from ec4, so it does not need to compat levels.
}

function toArr(o) {
    return isArray(o) ? o : o ? [o] : [];
}

function toObj(o) {
    return (isArray(o) ? o[0] : o) || {};
}

var compatStyle = function (option, isTheme) {
    each$5(toArr(option.series), function (seriesOpt) {
        isObject$3(seriesOpt) && processSeries(seriesOpt);
    });

    var axes = ['xAxis', 'yAxis', 'radiusAxis', 'angleAxis', 'singleAxis', 'parallelAxis', 'radar'];
    isTheme && axes.push('valueAxis', 'categoryAxis', 'logAxis', 'timeAxis');

    each$5(
        axes,
        function (axisName) {
            each$5(toArr(option[axisName]), function (axisOpt) {
                if (axisOpt) {
                    compatTextStyle(axisOpt, 'axisLabel');
                    compatTextStyle(axisOpt.axisPointer, 'label');
                }
            });
        }
    );

    each$5(toArr(option.parallel), function (parallelOpt) {
        var parallelAxisDefault = parallelOpt && parallelOpt.parallelAxisDefault;
        compatTextStyle(parallelAxisDefault, 'axisLabel');
        compatTextStyle(parallelAxisDefault && parallelAxisDefault.axisPointer, 'label');
    });

    each$5(toArr(option.calendar), function (calendarOpt) {
        convertNormalEmphasis(calendarOpt, 'itemStyle');
        compatTextStyle(calendarOpt, 'dayLabel');
        compatTextStyle(calendarOpt, 'monthLabel');
        compatTextStyle(calendarOpt, 'yearLabel');
    });

    // radar.name.textStyle
    each$5(toArr(option.radar), function (radarOpt) {
        compatTextStyle(radarOpt, 'name');
    });

    each$5(toArr(option.geo), function (geoOpt) {
        if (isObject$3(geoOpt)) {
            compatEC3CommonStyles(geoOpt);
            each$5(toArr(geoOpt.regions), function (regionObj) {
                compatEC3CommonStyles(regionObj);
            });
        }
    });

    each$5(toArr(option.timeline), function (timelineOpt) {
        compatEC3CommonStyles(timelineOpt);
        convertNormalEmphasis(timelineOpt, 'label');
        convertNormalEmphasis(timelineOpt, 'itemStyle');
        convertNormalEmphasis(timelineOpt, 'controlStyle', true);

        var data = timelineOpt.data;
        isArray(data) && each$1(data, function (item) {
            if (isObject$1(item)) {
                convertNormalEmphasis(item, 'label');
                convertNormalEmphasis(item, 'itemStyle');
            }
        });
    });

    each$5(toArr(option.toolbox), function (toolboxOpt) {
        convertNormalEmphasis(toolboxOpt, 'iconStyle');
        each$5(toolboxOpt.feature, function (featureOpt) {
            convertNormalEmphasis(featureOpt, 'iconStyle');
        });
    });

    compatTextStyle(toObj(option.axisPointer), 'label');
    compatTextStyle(toObj(option.tooltip).axisPointer, 'label');
};

// Compatitable with 2.0

function get(opt, path) {
    path = path.split(',');
    var obj = opt;
    for (var i = 0; i < path.length; i++) {
        obj = obj && obj[path[i]];
        if (obj == null) {
            break;
        }
    }
    return obj;
}

function set$1(opt, path, val, overwrite) {
    path = path.split(',');
    var obj = opt;
    var key;
    for (var i = 0; i < path.length - 1; i++) {
        key = path[i];
        if (obj[key] == null) {
            obj[key] = {};
        }
        obj = obj[key];
    }
    if (overwrite || obj[path[i]] == null) {
        obj[path[i]] = val;
    }
}

function compatLayoutProperties(option) {
    each$1(LAYOUT_PROPERTIES, function (prop) {
        if (prop[0] in option && !(prop[1] in option)) {
            option[prop[1]] = option[prop[0]];
        }
    });
}

var LAYOUT_PROPERTIES = [
    ['x', 'left'], ['y', 'top'], ['x2', 'right'], ['y2', 'bottom']
];

var COMPATITABLE_COMPONENTS = [
    'grid', 'geo', 'parallel', 'legend', 'toolbox', 'title', 'visualMap', 'dataZoom', 'timeline'
];

var backwardCompat = function (option, isTheme) {
    compatStyle(option, isTheme);

    // Make sure series array for model initialization.
    option.series = normalizeToArray(option.series);

    each$1(option.series, function (seriesOpt) {
        if (!isObject$1(seriesOpt)) {
            return;
        }

        var seriesType = seriesOpt.type;

        if (seriesType === 'pie' || seriesType === 'gauge') {
            if (seriesOpt.clockWise != null) {
                seriesOpt.clockwise = seriesOpt.clockWise;
            }
        }
        if (seriesType === 'gauge') {
            var pointerColor = get(seriesOpt, 'pointer.color');
            pointerColor != null
                && set$1(seriesOpt, 'itemStyle.normal.color', pointerColor);
        }

        compatLayoutProperties(seriesOpt);
    });

    // dataRange has changed to visualMap
    if (option.dataRange) {
        option.visualMap = option.dataRange;
    }

    each$1(COMPATITABLE_COMPONENTS, function (componentName) {
        var options = option[componentName];
        if (options) {
            if (!isArray(options)) {
                options = [options];
            }
            each$1(options, function (option) {
                compatLayoutProperties(option);
            });
        }
    });
};

// (1) [Caution]: the logic is correct based on the premises:
//     data processing stage is blocked in stream.
//     See <module:echarts/stream/Scheduler#performDataProcessorTasks>
// (2) Only register once when import repeatly.
//     Should be executed before after series filtered and before stack calculation.
var dataStack = function (ecModel) {
    var stackInfoMap = createHashMap();
    ecModel.eachSeries(function (seriesModel) {
        var stack = seriesModel.get('stack');
        // Compatibal: when `stack` is set as '', do not stack.
        if (stack) {
            var stackInfoList = stackInfoMap.get(stack) || stackInfoMap.set(stack, []);
            var data = seriesModel.getData();

            var stackInfo = {
                // Used for calculate axis extent automatically.
                stackResultDimension: data.getCalculationInfo('stackResultDimension'),
                stackedOverDimension: data.getCalculationInfo('stackedOverDimension'),
                stackedDimension: data.getCalculationInfo('stackedDimension'),
                stackedByDimension: data.getCalculationInfo('stackedByDimension'),
                isStackedByIndex: data.getCalculationInfo('isStackedByIndex'),
                data: data,
                seriesModel: seriesModel
            };

            // If stacked on axis that do not support data stack.
            if (!stackInfo.stackedDimension
                || !(stackInfo.isStackedByIndex || stackInfo.stackedByDimension)
            ) {
                return;
            }

            stackInfoList.length && data.setCalculationInfo(
                'stackedOnSeries', stackInfoList[stackInfoList.length - 1].seriesModel
            );

            stackInfoList.push(stackInfo);
        }
    });

    stackInfoMap.each(calculateStack);
};

function calculateStack(stackInfoList) {
    each$1(stackInfoList, function (targetStackInfo, idxInStack) {
        var resultVal = [];
        var resultNaN = [NaN, NaN];
        var dims = [targetStackInfo.stackResultDimension, targetStackInfo.stackedOverDimension];
        var targetData = targetStackInfo.data;
        var isStackedByIndex = targetStackInfo.isStackedByIndex;

        // Should not write on raw data, because stack series model list changes
        // depending on legend selection.
        var newData = targetData.map(dims, function (v0, v1, dataIndex) {
            var sum = targetData.get(targetStackInfo.stackedDimension, dataIndex);

            // Consider `connectNulls` of line area, if value is NaN, stackedOver
            // should also be NaN, to draw a appropriate belt area.
            if (isNaN(sum)) {
                return resultNaN;
            }

            var byValue;
            var stackedDataRawIndex;

            if (isStackedByIndex) {
                stackedDataRawIndex = targetData.getRawIndex(dataIndex);
            }
            else {
                byValue = targetData.get(targetStackInfo.stackedByDimension, dataIndex);
            }

            // If stackOver is NaN, chart view will render point on value start.
            var stackedOver = NaN;

            for (var j = idxInStack - 1; j >= 0; j--) {
                var stackInfo = stackInfoList[j];

                // Has been optimized by inverted indices on `stackedByDimension`.
                if (!isStackedByIndex) {
                    stackedDataRawIndex = stackInfo.data.rawIndexOf(stackInfo.stackedByDimension, byValue);
                }

                if (stackedDataRawIndex >= 0) {
                    var val = stackInfo.data.getByRawIndex(stackInfo.stackResultDimension, stackedDataRawIndex);

                    // Considering positive stack, negative stack and empty data
                    if ((sum >= 0 && val > 0) // Positive stack
                        || (sum <= 0 && val < 0) // Negative stack
                    ) {
                        sum += val;
                        stackedOver = val;
                        break;
                    }
                }
            }

            resultVal[0] = sum;
            resultVal[1] = stackedOver;

            return resultVal;
        });

        targetData.hostModel.setData(newData);
        // Update for consequent calculation
        targetStackInfo.data = newData;
    });
}

// TODO
// ??? refactor? check the outer usage of data provider.
// merge with defaultDimValueGetter?

/**
 * If normal array used, mutable chunk size is supported.
 * If typed array used, chunk size must be fixed.
 */
function DefaultDataProvider(source, dimSize) {
    if (!Source.isInstance(source)) {
        source = Source.seriesDataToSource(source);
    }
    this._source = source;

    var data = this._data = source.data;
    var sourceFormat = source.sourceFormat;

    // Typed array. TODO IE10+?
    if (sourceFormat === SOURCE_FORMAT_TYPED_ARRAY) {
        if (__DEV__) {
            if (dimSize == null) {
                throw new Error('Typed array data must specify dimension size');
            }
        }
        this._offset = 0;
        this._dimSize = dimSize;
        this._data = data;
    }

    var methods = providerMethods[
        sourceFormat === SOURCE_FORMAT_ARRAY_ROWS
        ? sourceFormat + '_' + source.seriesLayoutBy
        : sourceFormat
    ];

    if (__DEV__) {
        assert$1(methods, 'Invalide sourceFormat: ' + sourceFormat);
    }

    extend(this, methods);
}

var providerProto = DefaultDataProvider.prototype;
// If data is pure without style configuration
providerProto.pure = false;
// If data is persistent and will not be released after use.
providerProto.persistent = true;

// ???! FIXME legacy data provider do not has method getSource
providerProto.getSource = function () {
    return this._source;
};

var providerMethods = {

    'arrayRows_column': {
        pure: true,
        count: function () {
            return Math.max(0, this._data.length - this._source.startIndex);
        },
        getItem: function (idx) {
            return this._data[idx + this._source.startIndex];
        },
        appendData: appendDataSimply
    },

    'arrayRows_row': {
        pure: true,
        count: function () {
            var row = this._data[0];
            return row ? Math.max(0, row.length - this._source.startIndex) : 0;
        },
        getItem: function (idx) {
            idx += this._source.startIndex;
            var item = [];
            var data = this._data;
            for (var i = 0; i < data.length; i++) {
                var row = data[i];
                item.push(row ? row[idx] : null);
            }
            return item;
        },
        appendData: function () {
            throw new Error('Do not support appendData when set seriesLayoutBy: "row".');
        }
    },

    'objectRows': {
        pure: true,
        count: countSimply,
        getItem: getItemSimply,
        appendData: appendDataSimply
    },

    'keyedColumns': {
        pure: true,
        count: function () {
            var dimName = this._source.dimensionsDefine[0].name;
            var col = this._data[dimName];
            return col ? col.length : 0;
        },
        getItem: function (idx) {
            var item = [];
            var dims = this._source.dimensionsDefine;
            for (var i = 0; i < dims.length; i++) {
                var col = this._data[dims[i].name];
                item.push(col ? col[idx] : null);
            }
            return item;
        },
        appendData: function (newData) {
            var data = this._data;
            each$1(newData, function (newCol, key) {
                var oldCol = data[key] || (data[key] = []);
                for (var i = 0; i < (newCol || []).length; i++) {
                    oldCol.push(newCol[i]);
                }
            });
        }
    },

    'original': {
        count: countSimply,
        getItem: getItemSimply,
        appendData: appendDataSimply
    },

    'typedArray': {
        persistent: false,
        pure: true,
        count: function () {
            return this._data ? (this._data.length / this._dimSize) : 0;
        },
        getItem: function (idx) {
            idx = idx - this._offset;
            var item = [];
            var offset = this._dimSize * idx;
            for (var i = 0; i < this._dimSize; i++) {
                item[i] = this._data[offset + i];
            }
            return item;
        },
        appendData: function (newData) {
            if (__DEV__) {
                assert$1(
                    isTypedArray(newData),
                    'Added data must be TypedArray if data in initialization is TypedArray'
                );
            }

            this._data = newData;
        },

        // Clean self if data is already used.
        clean: function () {
            // PENDING
            this._offset += this.count();
            this._data = null;
        }
    }
};

function countSimply() {
    return this._data.length;
}
function getItemSimply(idx) {
    return this._data[idx];
}
function appendDataSimply(newData) {
    for (var i = 0; i < newData.length; i++) {
        this._data.push(newData[i]);
    }
}



var rawValueGetters = {

    arrayRows: getRawValueSimply,

    objectRows: function (dataItem, dataIndex, dimIndex, dimName) {
        return dimIndex != null ? dataItem[dimName] : dataItem;
    },

    keyedColumns: getRawValueSimply,

    original: function (dataItem, dataIndex, dimIndex, dimName) {
        // FIXME
        // In some case (markpoint in geo (geo-map.html)), dataItem
        // is {coord: [...]}
        var value = getDataItemValue(dataItem);
        return (dimIndex == null || !(value instanceof Array))
            ? value
            : value[dimIndex];
    },

    typedArray: getRawValueSimply
};

function getRawValueSimply(dataItem, dataIndex, dimIndex, dimName) {
    return dimIndex != null ? dataItem[dimIndex] : dataItem;
}


var defaultDimValueGetters = {

    arrayRows: getDimValueSimply,

    objectRows: function (dataItem, dimName, dataIndex, dimIndex) {
        return converDataValue(dataItem[dimName], this._dimensionInfos[dimName]);
    },

    keyedColumns: getDimValueSimply,

    original: function (dataItem, dimName, dataIndex, dimIndex) {
        // Performance sensitive, do not use modelUtil.getDataItemValue.
        // If dataItem is an plain object with no value field, the var `value`
        // will be assigned with the object, but it will be tread correctly
        // in the `convertDataValue`.
        var value = dataItem && (dataItem.value == null ? dataItem : dataItem.value);

        // If any dataItem is like { value: 10 }
        if (!this._rawData.pure && isDataItemOption(dataItem)) {
            this.hasItemOption = true;
        }
        return converDataValue(
            (value instanceof Array)
                ? value[dimIndex]
                // If value is a single number or something else not array.
                : value,
            this._dimensionInfos[dimName]
        );
    },

    typedArray: function (dataItem, dimName, dataIndex, dimIndex) {
        return dataItem[dimIndex];
    }

};

function getDimValueSimply(dataItem, dimName, dataIndex, dimIndex) {
    return converDataValue(dataItem[dimIndex], this._dimensionInfos[dimName]);
}

/**
 * This helper method convert value in data.
 * @param {string|number|Date} value
 * @param {Object|string} [dimInfo] If string (like 'x'), dimType defaults 'number'.
 *        If "dimInfo.ordinalParseAndSave", ordinal value can be parsed.
 */
function converDataValue(value, dimInfo) {
    // Performance sensitive.
    var dimType = dimInfo && dimInfo.type;
    if (dimType === 'ordinal') {
        // If given value is a category string
        var ordinalMeta = dimInfo && dimInfo.ordinalMeta;
        return ordinalMeta
            ? ordinalMeta.parseAndCollect(value)
            : value;
    }

    if (dimType === 'time'
        // spead up when using timestamp
        && typeof value !== 'number'
        && value != null
        && value !== '-'
    ) {
        value = +parseDate(value);
    }

    // dimType defaults 'number'.
    // If dimType is not ordinal and value is null or undefined or NaN or '-',
    // parse to NaN.
    return (value == null || value === '')
        ? NaN
        // If string (like '-'), using '+' parse to NaN
        // If object, also parse to NaN
        : +value;
}

// ??? FIXME can these logic be more neat: getRawValue, getRawDataItem,
// Consider persistent.
// Caution: why use raw value to display on label or tooltip?
// A reason is to avoid format. For example time value we do not know
// how to format is expected. More over, if stack is used, calculated
// value may be 0.91000000001, which have brings trouble to display.
// TODO: consider how to treat null/undefined/NaN when display?
/**
 * @param {module:echarts/data/List} data
 * @param {number} dataIndex
 * @param {string|number} [dim] dimName or dimIndex
 * @return {Array.<number>|string|number} can be null/undefined.
 */
function retrieveRawValue(data, dataIndex, dim) {
    if (!data) {
        return;
    }

    // Consider data may be not persistent.
    var dataItem = data.getRawDataItem(dataIndex);

    if (dataItem == null) {
        return;
    }

    var sourceFormat = data.getProvider().getSource().sourceFormat;
    var dimName;
    var dimIndex;

    var dimInfo = data.getDimensionInfo(dim);
    if (dimInfo) {
        dimName = dimInfo.name;
        dimIndex = dimInfo.index;
    }

    return rawValueGetters[sourceFormat](dataItem, dataIndex, dimIndex, dimName);
}

/**
 * Compatible with some cases (in pie, map) like:
 * data: [{name: 'xx', value: 5, selected: true}, ...]
 * where only sourceFormat is 'original' and 'objectRows' supported.
 *
 * ??? TODO
 * Supported detail options in data item when using 'arrayRows'.
 *
 * @param {module:echarts/data/List} data
 * @param {number} dataIndex
 * @param {string} attr like 'selected'
 */
function retrieveRawAttr(data, dataIndex, attr) {
    if (!data) {
        return;
    }

    var sourceFormat = data.getProvider().getSource().sourceFormat;

    if (sourceFormat !== SOURCE_FORMAT_ORIGINAL
        && sourceFormat !== SOURCE_FORMAT_OBJECT_ROWS
    ) {
        return;
    }

    var dataItem = data.getRawDataItem(dataIndex);
    if (sourceFormat === SOURCE_FORMAT_ORIGINAL && !isObject$1(dataItem)) {
        dataItem = null;
    }
    if (dataItem) {
        return dataItem[attr];
    }
}

var DIMENSION_LABEL_REG = /\{@(.+?)\}/g;

// PENDING A little ugly
var dataFormatMixin = {
    /**
     * Get params for formatter
     * @param {number} dataIndex
     * @param {string} [dataType]
     * @return {Object}
     */
    getDataParams: function (dataIndex, dataType) {
        var data = this.getData(dataType);
        var rawValue = this.getRawValue(dataIndex, dataType);
        var rawDataIndex = data.getRawIndex(dataIndex);
        var name = data.getName(dataIndex, true);
        var itemOpt = data.getRawDataItem(dataIndex);
        var color = data.getItemVisual(dataIndex, 'color');

        return {
            componentType: this.mainType,
            componentSubType: this.subType,
            seriesType: this.mainType === 'series' ? this.subType : null,
            seriesIndex: this.seriesIndex,
            seriesId: this.id,
            seriesName: this.name,
            name: name,
            dataIndex: rawDataIndex,
            data: itemOpt,
            dataType: dataType,
            value: rawValue,
            color: color,
            marker: getTooltipMarker(color),

            // Param name list for mapping `a`, `b`, `c`, `d`, `e`
            $vars: ['seriesName', 'name', 'value']
        };
    },

    /**
     * Format label
     * @param {number} dataIndex
     * @param {string} [status='normal'] 'normal' or 'emphasis'
     * @param {string} [dataType]
     * @param {number} [dimIndex]
     * @param {string} [labelProp='label']
     * @return {string} If not formatter, return null/undefined
     */
    getFormattedLabel: function (dataIndex, status, dataType, dimIndex, labelProp) {
        status = status || 'normal';
        var data = this.getData(dataType);
        var itemModel = data.getItemModel(dataIndex);

        var params = this.getDataParams(dataIndex, dataType);
        if (dimIndex != null && (params.value instanceof Array)) {
            params.value = params.value[dimIndex];
        }

        var formatter = itemModel.get(
            status === 'normal'
            ? [labelProp || 'label', 'formatter']
            : [status, labelProp || 'label', 'formatter']
        );

        if (typeof formatter === 'function') {
            params.status = status;
            return formatter(params);
        }
        else if (typeof formatter === 'string') {
            var str = formatTpl(formatter, params);

            // Support 'aaa{@[3]}bbb{@product}ccc'.
            // Do not support '}' in dim name util have to.
            return str.replace(DIMENSION_LABEL_REG, function (origin, dim) {
                var len = dim.length;
                if (dim.charAt(0) === '[' && dim.charAt(len - 1) === ']') {
                    dim = +dim.slice(1, len - 1); // Also: '[]' => 0
                }
                return retrieveRawValue(data, dataIndex, dim);
            });
        }
    },

    /**
     * Get raw value in option
     * @param {number} idx
     * @param {string} [dataType]
     * @return {Array|number|string}
     */
    getRawValue: function (idx, dataType) {
        return retrieveRawValue(this.getData(dataType), idx);
    },

    /**
     * Should be implemented.
     * @param {number} dataIndex
     * @param {boolean} [multipleSeries=false]
     * @param {number} [dataType]
     * @return {string} tooltip string
     */
    formatTooltip: function () {
        // Empty function
    }
};

/**
 * @param {Object} define
 * @return See the return of `createTask`.
 */
function createTask(define) {
    return new Task(define);
}

/**
 * @constructor
 * @param {Object} define
 * @param {Function} define.reset Custom reset
 * @param {Function} [define.plan] Returns 'reset' indicate reset immediately.
 * @param {Function} [define.count] count is used to determin data task.
 * @param {Function} [define.onDirty] count is used to determin data task.
 */
function Task(define) {
    define = define || {};

    this._reset = define.reset;
    this._plan = define.plan;
    this._count = define.count;
    this._onDirty = define.onDirty;

    this._dirty = true;

    // Context must be specified implicitly, to
    // avoid miss update context when model changed.
    this.context;
}

var taskProto = Task.prototype;

/**
 * @param {Object} performArgs
 * @param {number} [performArgs.step] Specified step.
 * @param {number} [performArgs.skip] Skip customer perform call.
 */
taskProto.perform = function (performArgs) {
    var upTask = this._upstream;
    var skip = performArgs && performArgs.skip;

    // TODO some refactor.
    // Pull data. Must pull data each time, because context.data
    // may be updated by Series.setData.
    if (this._dirty && upTask) {
        var context = this.context;
        context.data = context.outputData = upTask.context.outputData;
    }

    if (this.__pipeline) {
        this.__pipeline.currentTask = this;
    }

    var planResult;
    if (this._plan && !skip) {
        planResult = this._plan(this.context);
    }

    var forceFirstProgress;
    if (this._dirty || planResult === 'reset') {
        this._dirty = false;
        forceFirstProgress = reset(this, skip);
    }

    var step = performArgs && performArgs.step;

    if (upTask) {

        if (__DEV__) {
            assert$1(upTask._outputDueEnd != null);
        }
        // ??? FIXME move to schedueler?
        // this._dueEnd = Math.max(upTask._outputDueEnd, this._dueEnd);
        this._dueEnd = upTask._outputDueEnd;
    }
    // DataTask or overallTask
    else {
        if (__DEV__) {
            assert$1(!this._progress || this._count);
        }
        this._dueEnd = this._count ? this._count(this.context) : Infinity;
    }

    // Note: Stubs, that its host overall task let it has progress, has progress.
    // If no progress, pass index from upstream to downstream each time plan called.
    if (this._progress) {
        var start = this._dueIndex;
        var end = Math.min(
            step != null ? this._dueIndex + step : Infinity,
            this._dueEnd
        );

        !skip && (forceFirstProgress || start < end) && (
            this._progress({start: start, end: end}, this.context)
        );

        this._dueIndex = end;
        // If no `outputDueEnd`, assume that output data and
        // input data is the same, so use `dueIndex` as `outputDueEnd`.
        var outputDueEnd = this._settedOutputEnd != null
            ? this._settedOutputEnd : end;

        if (__DEV__) {
            // ??? Can not rollback.
            assert$1(outputDueEnd >= this._outputDueEnd);
        }

        this._outputDueEnd = outputDueEnd;
    }
    else {
        // (1) Some overall task has no progress.
        // (2) Stubs, that its host overall task do not let it has progress, has no progress.
        // This should always be performed so it can be passed to downstream.
        this._dueIndex = this._outputDueEnd = this._settedOutputEnd != null
            ? this._settedOutputEnd : this._dueEnd;
    }

    return this.unfinished();
};

taskProto.dirty = function () {
    this._dirty = true;
    this._onDirty && this._onDirty(this.context);
};

/**
 * @param {Object} [params]
 */
function reset(taskIns, skip) {
    taskIns._dueIndex = taskIns._outputDueEnd = taskIns._dueEnd = 0;
    taskIns._settedOutputEnd = null;

    var progress;
    var forceFirstProgress;

    if (!skip && taskIns._reset) {
        progress = taskIns._reset(taskIns.context);
        if (progress && progress.progress) {
            forceFirstProgress = progress.forceFirstProgress;
            progress = progress.progress;
        }
    }

    taskIns._progress = progress;

    var downstream = taskIns._downstream;
    downstream && downstream.dirty();

    return forceFirstProgress;
}

/**
 * @return {boolean}
 */
taskProto.unfinished = function () {
    return this._progress && this._dueIndex < this._dueEnd;
};

/**
 * @param {Object} downTask The downstream task.
 * @return {Object} The downstream task.
 */
taskProto.pipe = function (downTask) {
    if (__DEV__) {
        assert$1(downTask && !downTask._disposed && downTask !== this);
    }

    // If already downstream, do not dirty downTask.
    if (this._downstream !== downTask || this._dirty) {
        this._downstream = downTask;
        downTask._upstream = this;
        downTask.dirty();
    }
};

taskProto.dispose = function () {
    if (this._disposed) {
        return;
    }

    this._upstream && (this._upstream._downstream = null);
    this._downstream && (this._downstream._upstream = null);

    this._dirty = false;
    this._disposed = true;
};

taskProto.getUpstream = function () {
    return this._upstream;
};

taskProto.getDownstream = function () {
    return this._downstream;
};

taskProto.setOutputEnd = function (end) {
    // ??? FIXME: check
    // This only happend in dataTask, dataZoom, map, currently.
    // where dataZoom do not set end each time, but only set
    // when reset. So we should record the setted end, in case
    // that the stub of dataZoom perform again and earse the
    // setted end by upstream.
    this._outputDueEnd = this._settedOutputEnd = end;
    // this._outputDueEnd = end;
};


///////////////////////////////////////////////////////////
// For stream debug (Should be commented out after used!)
// Usage: printTask(this, 'begin');
// Usage: printTask(this, null, {someExtraProp});
// function printTask(task, prefix, extra) {
//     window.ecTaskUID == null && (window.ecTaskUID = 0);
//     task.uidDebug == null && (task.uidDebug = `task_${window.ecTaskUID++}`);
//     task.agent && task.agent.uidDebug == null && (task.agent.uidDebug = `task_${window.ecTaskUID++}`);
//     var props = [];
//     if (task.__pipeline) {
//         var val = `${task.__idxInPipeline}/${task.__pipeline.tail.__idxInPipeline} ${task.agent ? '(stub)' : ''}`;
//         props.push({text: 'idx', value: val});
//     } else {
//         var stubCount = 0;
//         task.agentStubMap.each(() => stubCount++);
//         props.push({text: 'idx', value: `overall (stubs: ${stubCount})`});
//     }
//     props.push({text: 'uid', value: task.uidDebug});
//     if (task.__pipeline) {
//         props.push({text: 'pid', value: task.__pipeline.id});
//         task.agent && props.push(
//             {text: 'stubFor', value: task.agent.uidDebug}
//         );
//     }
//     props.push(
//         {text: 'dirty', value: task._dirty},
//         {text: 'dueIndex', value: task._dueIndex},
//         {text: 'dueEnd', value: task._dueEnd},
//         {text: 'outputDueEnd', value: task._outputDueEnd}
//     );
//     if (extra) {
//         Object.keys(extra).forEach(key => {
//             props.push({text: key, value: extra[key]});
//         });
//     }
//     var args = ['color: blue'];
//     var msg = `%c[${prefix || 'T'}] %c` + props.map(item => (
//         args.push('color: black', 'color: red'),
//         `${item.text}: %c${item.value}`
//     )).join('%c, ');
//     console.log.apply(console, [msg].concat(args));
//     // console.log(this);
// }

var inner$4 = makeInner();

var SeriesModel = ComponentModel.extend({

    type: 'series.__base__',

    /**
     * @readOnly
     */
    seriesIndex: 0,

    // coodinateSystem will be injected in the echarts/CoordinateSystem
    coordinateSystem: null,

    /**
     * @type {Object}
     * @protected
     */
    defaultOption: null,

    /**
     * Data provided for legend
     * @type {Function}
     */
    // PENDING
    legendDataProvider: null,

    /**
     * Access path of color for visual
     */
    visualColorAccessPath: 'itemStyle.color',

    /**
     * Support merge layout params.
     * Only support 'box' now (left/right/top/bottom/width/height).
     * @type {string|Object} Object can be {ignoreSize: true}
     * @readOnly
     */
    layoutMode: null,

    init: function (option, parentModel, ecModel, extraOpt) {

        /**
         * @type {number}
         * @readOnly
         */
        this.seriesIndex = this.componentIndex;

        this.dataTask = createTask({
            count: dataTaskCount,
            reset: dataTaskReset
        });
        this.dataTask.context = {model: this};

        this.mergeDefaultAndTheme(option, ecModel);

        prepareSource(this);


        var data = this.getInitialData(option, ecModel);
        wrapData(data, this);
        this.dataTask.context.data = data;

        if (__DEV__) {
            assert$1(data, 'getInitialData returned invalid data.');
        }

        /**
         * @type {module:echarts/data/List|module:echarts/data/Tree|module:echarts/data/Graph}
         * @private
         */
        inner$4(this).dataBeforeProcessed = data;

        // If we reverse the order (make data firstly, and then make
        // dataBeforeProcessed by cloneShallow), cloneShallow will
        // cause data.graph.data !== data when using
        // module:echarts/data/Graph or module:echarts/data/Tree.
        // See module:echarts/data/helper/linkList

        // Theoretically, it is unreasonable to call `seriesModel.getData()` in the model
        // init or merge stage, because the data can be restored. So we do not `restoreData`
        // and `setData` here, which forbids calling `seriesModel.getData()` in this stage.
        // Call `seriesModel.getRawData()` instead.
        // this.restoreData();

        autoSeriesName(this);
    },

    /**
     * Util for merge default and theme to option
     * @param  {Object} option
     * @param  {module:echarts/model/Global} ecModel
     */
    mergeDefaultAndTheme: function (option, ecModel) {
        var layoutMode = this.layoutMode;
        var inputPositionParams = layoutMode
            ? getLayoutParams(option) : {};

        // Backward compat: using subType on theme.
        // But if name duplicate between series subType
        // (for example: parallel) add component mainType,
        // add suffix 'Series'.
        var themeSubType = this.subType;
        if (ComponentModel.hasClass(themeSubType)) {
            themeSubType += 'Series';
        }
        merge(
            option,
            ecModel.getTheme().get(this.subType)
        );
        merge(option, this.getDefaultOption());

        // Default label emphasis `show`
        defaultEmphasis(option, 'label', ['show']);

        this.fillDataTextStyle(option.data);

        if (layoutMode) {
            mergeLayoutParam(option, inputPositionParams, layoutMode);
        }
    },

    mergeOption: function (newSeriesOption, ecModel) {
        // this.settingTask.dirty();

        newSeriesOption = merge(this.option, newSeriesOption, true);
        this.fillDataTextStyle(newSeriesOption.data);

        var layoutMode = this.layoutMode;
        if (layoutMode) {
            mergeLayoutParam(this.option, newSeriesOption, layoutMode);
        }

        prepareSource(this);

        var data = this.getInitialData(newSeriesOption, ecModel);
        wrapData(data, this);
        this.dataTask.dirty();
        this.dataTask.context.data = data;

        inner$4(this).dataBeforeProcessed = data;

        autoSeriesName(this);
    },

    fillDataTextStyle: function (data) {
        // Default data label emphasis `show`
        // FIXME Tree structure data ?
        // FIXME Performance ?
        if (data) {
            var props = ['show'];
            for (var i = 0; i < data.length; i++) {
                if (data[i] && data[i].label) {
                    defaultEmphasis(data[i], 'label', props);
                }
            }
        }
    },

    /**
     * Init a data structure from data related option in series
     * Must be overwritten
     */
    getInitialData: function () {},

    /**
     * Append data to list
     * @param {Object} params
     * @param {Array|TypedArray} params.data
     */
    appendData: function (params) {
        // FIXME ???
        // (1) If data from dataset, forbidden append.
        // (2) support append data of dataset.
        var data = this.getRawData();
        data.appendData(params.data);
    },

    /**
     * Consider some method like `filter`, `map` need make new data,
     * We should make sure that `seriesModel.getData()` get correct
     * data in the stream procedure. So we fetch data from upstream
     * each time `task.perform` called.
     * @param {string} [dataType]
     * @return {module:echarts/data/List}
     */
    getData: function (dataType) {
        var task = getCurrentTask(this);
        if (task) {
            var data = task.context.data;
            return dataType == null ? data : data.getLinkedData(dataType);
        }
        else {
            // When series is not alive (that may happen when click toolbox
            // restore or setOption with not merge mode), series data may
            // be still need to judge animation or something when graphic
            // elements want to know whether fade out.
            return inner$4(this).data;
        }
    },

    /**
     * @param {module:echarts/data/List} data
     */
    setData: function (data) {
        var task = getCurrentTask(this);
        if (task) {
            var context = task.context;
            // Consider case: filter, data sample.
            if (context.data !== data && task.isOverallFilter) {
                task.setOutputEnd(data.count());
            }
            context.outputData = data;
            // Caution: setData should update context.data,
            // Because getData may be called multiply in a
            // single stage and expect to get the data just
            // set. (For example, AxisProxy, x y both call
            // getData and setDate sequentially).
            // So the context.data should be fetched from
            // upstream each time when a stage starts to be
            // performed.
            if (task !== this.dataTask) {
                context.data = data;
            }
        }
        inner$4(this).data = data;
    },

    /**
     * @see {module:echarts/data/helper/sourceHelper#getSource}
     * @return {module:echarts/data/Source} source
     */
    getSource: function () {
        return getSource(this);
    },

    /**
     * Get data before processed
     * @return {module:echarts/data/List}
     */
    getRawData: function () {
        return inner$4(this).dataBeforeProcessed;
    },

    /**
     * Get base axis if has coordinate system and has axis.
     * By default use coordSys.getBaseAxis();
     * Can be overrided for some chart.
     * @return {type} description
     */
    getBaseAxis: function () {
        var coordSys = this.coordinateSystem;
        return coordSys && coordSys.getBaseAxis && coordSys.getBaseAxis();
    },

    // FIXME
    /**
     * Default tooltip formatter
     *
     * @param {number} dataIndex
     * @param {boolean} [multipleSeries=false]
     * @param {number} [dataType]
     */
    formatTooltip: function (dataIndex, multipleSeries, dataType) {

        function formatArrayValue(value) {
            // ??? TODO refactor these logic.
            // check: category-no-encode-has-axis-data in dataset.html
            var vertially = reduce(value, function (vertially, val, idx) {
                var dimItem = data.getDimensionInfo(idx);
                return vertially |= dimItem && dimItem.tooltip !== false && dimItem.displayName != null;
            }, 0);

            var result = [];

            tooltipDims.length
                ? each$1(tooltipDims, function (dim) {
                    setEachItem(retrieveRawValue(data, dataIndex, dim), dim);
                })
                // By default, all dims is used on tooltip.
                : each$1(value, setEachItem);

            function setEachItem(val, dim) {
                var dimInfo = data.getDimensionInfo(dim);
                // If `dimInfo.tooltip` is not set, show tooltip.
                if (!dimInfo || dimInfo.otherDims.tooltip === false) {
                    return;
                }
                var dimType = dimInfo.type;
                var dimHead = getTooltipMarker({color: color, type: 'subItem'});
                var valStr = (vertially
                        ? dimHead + encodeHTML(dimInfo.displayName || '-') + ': '
                        : ''
                    )
                    // FIXME should not format time for raw data?
                    + encodeHTML(dimType === 'ordinal'
                        ? val + ''
                        : dimType === 'time'
                        ? (multipleSeries ? '' : formatTime('yyyy/MM/dd hh:mm:ss', val))
                        : addCommas(val)
                    );
                valStr && result.push(valStr);
            }

            return (vertially ? '<br/>' : '') + result.join(vertially ? '<br/>' : ', ');
        }

        function formatSingleValue(val) {
            return encodeHTML(addCommas(val));
        }

        var data = this.getData();
        var tooltipDims = data.mapDimension('defaultedTooltip', true);
        var tooltipDimLen = tooltipDims.length;
        var value = this.getRawValue(dataIndex);
        var isValueArr = isArray(value);

        var color = data.getItemVisual(dataIndex, 'color');
        if (isObject$1(color) && color.colorStops) {
            color = (color.colorStops[0] || {}).color;
        }
        color = color || 'transparent';

        // Complicated rule for pretty tooltip.
        var formattedValue = (tooltipDimLen > 1 || (isValueArr && !tooltipDimLen))
            ? formatArrayValue(value)
            : tooltipDimLen
            ? formatSingleValue(retrieveRawValue(data, dataIndex, tooltipDims[0]))
            : formatSingleValue(isValueArr ? value[0] : value);

        var colorEl = getTooltipMarker(color);

        var name = data.getName(dataIndex);

        var seriesName = this.name;
        if (!isNameSpecified(this)) {
            seriesName = '';
        }
        seriesName = seriesName
            ? encodeHTML(seriesName) + (!multipleSeries ? '<br/>' : ': ')
            : '';

        return !multipleSeries
            ? seriesName + colorEl
                + (name
                    ? encodeHTML(name) + ': ' + formattedValue
                    : formattedValue
                )
            : colorEl + seriesName + formattedValue;
    },

    /**
     * @return {boolean}
     */
    isAnimationEnabled: function () {
        if (env$1.node) {
            return false;
        }

        var animationEnabled = this.getShallow('animation');
        if (animationEnabled) {
            if (this.getData().count() > this.getShallow('animationThreshold')) {
                animationEnabled = false;
            }
        }
        return animationEnabled;
    },

    restoreData: function () {
        this.dataTask.dirty();
    },

    getColorFromPalette: function (name, scope, requestColorNum) {
        var ecModel = this.ecModel;
        // PENDING
        var color = colorPaletteMixin.getColorFromPalette.call(this, name, scope, requestColorNum);
        if (!color) {
            color = ecModel.getColorFromPalette(name, scope, requestColorNum);
        }
        return color;
    },

    /**
     * Use `data.mapDimension(coordDim, true)` instead.
     * @deprecated
     */
    coordDimToDataDim: function (coordDim) {
        return this.getRawData().mapDimension(coordDim, true);
    },

    /**
     * Get progressive rendering count each step
     * @return {number}
     */
    getProgressive: function () {
        return this.get('progressive');
    },

    /**
     * Get progressive rendering count each step
     * @return {number}
     */
    getProgressiveThreshold: function () {
        return this.get('progressiveThreshold');
    },

    /**
     * Get data indices for show tooltip content. See tooltip.
     * @abstract
     * @param {Array.<string>|string} dim
     * @param {Array.<number>} value
     * @param {module:echarts/coord/single/SingleAxis} baseAxis
     * @return {Object} {dataIndices, nestestValue}.
     */
    getAxisTooltipData: null,

    /**
     * See tooltip.
     * @abstract
     * @param {number} dataIndex
     * @return {Array.<number>} Point of tooltip. null/undefined can be returned.
     */
    getTooltipPosition: null,

    /**
     * @see {module:echarts/stream/Scheduler}
     */
    pipeTask: null,

    /**
     * Convinient for override in extended class.
     * @protected
     * @type {Function}
     */
    preventIncremental: null,

    /**
     * @public
     * @readOnly
     * @type {Object}
     */
    pipelineContext: null

});


mixin(SeriesModel, dataFormatMixin);
mixin(SeriesModel, colorPaletteMixin);

/**
 * MUST be called after `prepareSource` called
 * Here we need to make auto series, especially for auto legend. But we
 * do not modify series.name in option to avoid side effects.
 */
function autoSeriesName(seriesModel) {
    // User specified name has higher priority, otherwise it may cause
    // series can not be queried unexpectedly.
    var name = seriesModel.name;
    if (!isNameSpecified(seriesModel)) {
        seriesModel.name = getSeriesAutoName(seriesModel) || name;
    }
}

function getSeriesAutoName(seriesModel) {
    var data = seriesModel.getRawData();
    var dataDims = data.mapDimension('seriesName', true);
    var nameArr = [];
    each$1(dataDims, function (dataDim) {
        var dimInfo = data.getDimensionInfo(dataDim);
        dimInfo.displayName && nameArr.push(dimInfo.displayName);
    });
    return nameArr.join(' ');
}

function dataTaskCount(context) {
    return context.model.getRawData().count();
}

function dataTaskReset(context) {
    var seriesModel = context.model;
    seriesModel.setData(seriesModel.getRawData().cloneShallow());
    return dataTaskProgress;
}

function dataTaskProgress(param, context) {
    // Avoid repead cloneShallow when data just created in reset.
    if (param.end > context.outputData.count()) {
        context.model.getRawData().cloneShallow(context.outputData);
    }
}

// TODO refactor
function wrapData(data, seriesModel) {
    each$1(data.CHANGABLE_METHODS, function (methodName) {
        data.wrapMethod(methodName, curry(onDataSelfChange, seriesModel));
    });
}

function onDataSelfChange(seriesModel) {
    var task = getCurrentTask(seriesModel);
    if (task) {
        // Consider case: filter, selectRange
        task.setOutputEnd(this.count());
    }
}

function getCurrentTask(seriesModel) {
    var scheduler = (seriesModel.ecModel || {}).scheduler;
    var pipeline = scheduler && scheduler.getPipeline(seriesModel.uid);

    if (pipeline) {
        // When pipline finished, the currrentTask keep the last
        // task (renderTask).
        var task = pipeline.currentTask;
        if (task) {
            var agentStubMap = task.agentStubMap;
            if (agentStubMap) {
                task = agentStubMap.get(seriesModel.uid);
            }
        }
        return task;
    }
}

var Component = function () {
    /**
     * @type {module:zrender/container/Group}
     * @readOnly
     */
    this.group = new Group();

    /**
     * @type {string}
     * @readOnly
     */
    this.uid = getUID('viewComponent');
};

Component.prototype = {

    constructor: Component,

    init: function (ecModel, api) {},

    render: function (componentModel, ecModel, api, payload) {},

    dispose: function () {}

};

var componentProto = Component.prototype;
componentProto.updateView
    = componentProto.updateLayout
    = componentProto.updateVisual
    = function (seriesModel, ecModel, api, payload) {
        // Do nothing;
    };
// Enable Component.extend.
enableClassExtend(Component);

// Enable capability of registerClass, getClass, hasClass, registerSubTypeDefaulter and so on.
enableClassManagement(Component, {registerWhenExtend: true});

/**
 * @return {string} If large mode changed, return string 'reset';
 */
var createRenderPlanner = function () {
    var inner = makeInner();

    return function (seriesModel) {
        var fields = inner(seriesModel);
        var pipelineContext = seriesModel.pipelineContext;

        var originalLarge = fields.large;
        var originalProgressive = fields.canProgressiveRender;

        var large = fields.large = pipelineContext.large;
        var progressive = fields.canProgressiveRender = pipelineContext.canProgressiveRender;

        return !!((originalLarge ^ large) || (originalProgressive ^ progressive)) && 'reset';
    };
};

var inner$5 = makeInner();
var renderPlanner = createRenderPlanner();

function Chart() {

    /**
     * @type {module:zrender/container/Group}
     * @readOnly
     */
    this.group = new Group();

    /**
     * @type {string}
     * @readOnly
     */
    this.uid = getUID('viewChart');

    this.renderTask = createTask({
        plan: renderTaskPlan,
        reset: renderTaskReset
    });
    this.renderTask.context = {view: this};
}

Chart.prototype = {

    type: 'chart',

    /**
     * Init the chart.
     * @param  {module:echarts/model/Global} ecModel
     * @param  {module:echarts/ExtensionAPI} api
     */
    init: function (ecModel, api) {},

    /**
     * Render the chart.
     * @param  {module:echarts/model/Series} seriesModel
     * @param  {module:echarts/model/Global} ecModel
     * @param  {module:echarts/ExtensionAPI} api
     * @param  {Object} payload
     */
    render: function (seriesModel, ecModel, api, payload) {},

    /**
     * Highlight series or specified data item.
     * @param  {module:echarts/model/Series} seriesModel
     * @param  {module:echarts/model/Global} ecModel
     * @param  {module:echarts/ExtensionAPI} api
     * @param  {Object} payload
     */
    highlight: function (seriesModel, ecModel, api, payload) {
        toggleHighlight(seriesModel.getData(), payload, 'emphasis');
    },

    /**
     * Downplay series or specified data item.
     * @param  {module:echarts/model/Series} seriesModel
     * @param  {module:echarts/model/Global} ecModel
     * @param  {module:echarts/ExtensionAPI} api
     * @param  {Object} payload
     */
    downplay: function (seriesModel, ecModel, api, payload) {
        toggleHighlight(seriesModel.getData(), payload, 'normal');
    },

    /**
     * Remove self.
     * @param  {module:echarts/model/Global} ecModel
     * @param  {module:echarts/ExtensionAPI} api
     */
    remove: function (ecModel, api) {
        this.group.removeAll();
    },

    /**
     * Dispose self.
     * @param  {module:echarts/model/Global} ecModel
     * @param  {module:echarts/ExtensionAPI} api
     */
    dispose: function () {},

    /**
     * Rendering preparation in progressive mode.
     * @param  {module:echarts/model/Series} seriesModel
     * @param  {module:echarts/model/Global} ecModel
     * @param  {module:echarts/ExtensionAPI} api
     * @param  {Object} payload
     */
    incrementalPrepareRender: null,

    /**
     * Render in progressive mode.
     * @param  {module:echarts/model/Series} seriesModel
     * @param  {module:echarts/model/Global} ecModel
     * @param  {module:echarts/ExtensionAPI} api
     * @param  {Object} payload
     */
    incrementalRender: null,

    /**
     * Update transform directly.
     * @param  {module:echarts/model/Series} seriesModel
     * @param  {module:echarts/model/Global} ecModel
     * @param  {module:echarts/ExtensionAPI} api
     * @param  {Object} payload
     * @return {Object} {update: true}
     */
    updateTransform: null

    /**
     * The view contains the given point.
     * @interface
     * @param {Array.<number>} point
     * @return {boolean}
     */
    // containPoint: function () {}

};

var chartProto = Chart.prototype;
chartProto.updateView
    = chartProto.updateLayout
    = chartProto.updateVisual
    = function (seriesModel, ecModel, api, payload) {
        this.render(seriesModel, ecModel, api, payload);
    };

/**
 * Set state of single element
 * @param  {module:zrender/Element} el
 * @param  {string} state
 */
function elSetState(el, state) {
    if (el) {
        el.trigger(state);
        if (el.type === 'group') {
            for (var i = 0; i < el.childCount(); i++) {
                elSetState(el.childAt(i), state);
            }
        }
    }
}
/**
 * @param  {module:echarts/data/List} data
 * @param  {Object} payload
 * @param  {string} state 'normal'|'emphasis'
 */
function toggleHighlight(data, payload, state) {
    var dataIndex = queryDataIndex(data, payload);

    if (dataIndex != null) {
        each$1(normalizeToArray(dataIndex), function (dataIdx) {
            elSetState(data.getItemGraphicEl(dataIdx), state);
        });
    }
    else {
        data.eachItemGraphicEl(function (el) {
            elSetState(el, state);
        });
    }
}

// Enable Chart.extend.
enableClassExtend(Chart, ['dispose']);

// Add capability of registerClass, getClass, hasClass, registerSubTypeDefaulter and so on.
enableClassManagement(Chart, {registerWhenExtend: true});

Chart.markUpdateMethod = function (payload, methodName) {
    inner$5(payload).updateMethod = methodName;
};

function renderTaskPlan(context) {
    return renderPlanner(context.model);
}

function renderTaskReset(context) {
    var seriesModel = context.model;
    var ecModel = context.ecModel;
    var api = context.api;
    var payload = context.payload;
    // ???! remove updateView updateVisual
    var canProgressiveRender = seriesModel.pipelineContext.canProgressiveRender;
    var view = context.view;

    var updateMethod = payload && inner$5(payload).updateMethod;
    var methodName = canProgressiveRender
        ? 'incrementalPrepareRender'
        : (updateMethod && view[updateMethod])
        ? updateMethod
        // `appendData` is also supported when data amount
        // is less than progressive threshold.
        : 'render';

    if (methodName !== 'render') {
        view[methodName](seriesModel, ecModel, api, payload);
    }

    return progressMethodMap[methodName];
}

var progressMethodMap = {
    incrementalPrepareRender: {
        progress: function (params, context) {
            context.view.incrementalRender(
                params, context.model, context.ecModel, context.api, context.payload
            );
        }
    },
    render: {
        // Put view.render in `progress` to support appendData. But in this case
        // view.render should not be called in reset, otherwise it will be called
        // twise. Use `forceFirstProgress` to make sure that view.render is called
        // in any cases.
        forceFirstProgress: true,
        progress: function (params, context) {
            context.view.render(
                context.model, context.ecModel, context.api, context.payload
            );
        }
    }
};

/**
 * @public
 * @param {(Function)} fn
 * @param {number} [delay=0] Unit: ms.
 * @param {boolean} [debounce=false]
 *        true: If call interval less than `delay`, only the last call works.
 *        false: If call interval less than `delay, call works on fixed rate.
 * @return {(Function)} throttled fn.
 */
function throttle(fn, delay, debounce) {

    var currCall;
    var lastCall = 0;
    var lastExec = 0;
    var timer = null;
    var diff;
    var scope;
    var args;
    var debounceNextCall;

    delay = delay || 0;

    function exec() {
        lastExec = (new Date()).getTime();
        timer = null;
        fn.apply(scope, args || []);
    }

    var cb = function () {
        currCall = (new Date()).getTime();
        scope = this;
        args = arguments;
        var thisDelay = debounceNextCall || delay;
        var thisDebounce = debounceNextCall || debounce;
        debounceNextCall = null;
        diff = currCall - (thisDebounce ? lastCall : lastExec) - thisDelay;

        clearTimeout(timer);

        if (thisDebounce) {
            timer = setTimeout(exec, thisDelay);
        }
        else {
            if (diff >= 0) {
                exec();
            }
            else {
                timer = setTimeout(exec, -diff);
            }
        }

        lastCall = currCall;
    };

    /**
     * Clear throttle.
     * @public
     */
    cb.clear = function () {
        if (timer) {
            clearTimeout(timer);
            timer = null;
        }
    };

    /**
     * Enable debounce once.
     */
    cb.debounceNextCall = function (debounceDelay) {
        debounceNextCall = debounceDelay;
    };

    return cb;
}

/**
 * Create throttle method or update throttle rate.
 *
 * @example
 * ComponentView.prototype.render = function () {
 *     ...
 *     throttle.createOrUpdate(
 *         this,
 *         '_dispatchAction',
 *         this.model.get('throttle'),
 *         'fixRate'
 *     );
 * };
 * ComponentView.prototype.remove = function () {
 *     throttle.clear(this, '_dispatchAction');
 * };
 * ComponentView.prototype.dispose = function () {
 *     throttle.clear(this, '_dispatchAction');
 * };
 *
 * @public
 * @param {Object} obj
 * @param {string} fnAttr
 * @param {number} [rate]
 * @param {string} [throttleType='fixRate'] 'fixRate' or 'debounce'
 * @return {Function} throttled function.
 */


/**
 * Clear throttle. Example see throttle.createOrUpdate.
 *
 * @public
 * @param {Object} obj
 * @param {string} fnAttr
 */

var seriesColor = {
    createOnAllSeries: true,
    performRawSeries: true,
    reset: function (seriesModel, ecModel) {
        var data = seriesModel.getData();
        var colorAccessPath = (seriesModel.visualColorAccessPath || 'itemStyle.color').split('.');
        var color = seriesModel.get(colorAccessPath) // Set in itemStyle
            || seriesModel.getColorFromPalette(
                // TODO series count changed.
                seriesModel.name, null, ecModel.getSeriesCount()
            );  // Default color

        // FIXME Set color function or use the platte color
        data.setVisual('color', color);

        // Only visible series has each data be visual encoded
        if (!ecModel.isSeriesFiltered(seriesModel)) {
            if (typeof color === 'function' && !(color instanceof Gradient)) {
                data.each(function (idx) {
                    data.setItemVisual(
                        idx, 'color', color(seriesModel.getDataParams(idx))
                    );
                });
            }

            // itemStyle in each data item
            var dataEach = function (data, idx) {
                var itemModel = data.getItemModel(idx);
                var color = itemModel.get(colorAccessPath, true);
                if (color != null) {
                    data.setItemVisual(idx, 'color', color);
                }
            };

            return { dataEach: data.hasItemOption ? dataEach : null };
        }
    }
};

var lang = {
    toolbox: {
        brush: {
            title: {
                rect: '矩形选择',
                polygon: '圈选',
                lineX: '横向选择',
                lineY: '纵向选择',
                keep: '保持选择',
                clear: '清除选择'
            }
        },
        dataView: {
            title: '数据视图',
            lang: ['数据视图', '关闭', '刷新']
        },
        dataZoom: {
            title: {
                zoom: '区域缩放',
                back: '区域缩放还原'
            }
        },
        magicType: {
            title: {
                line: '切换为折线图',
                bar: '切换为柱状图',
                stack: '切换为堆叠',
                tiled: '切换为平铺'
            }
        },
        restore: {
            title: '还原'
        },
        saveAsImage: {
            title: '保存为图片',
            lang: ['右键另存为图片']
        }
    },
    series: {
        typeNames: {
            pie: '饼图',
            bar: '柱状图',
            line: '折线图',
            scatter: '散点图',
            effectScatter: '涟漪散点图',
            radar: '雷达图',
            tree: '树图',
            treemap: '矩形树图',
            boxplot: '箱型图',
            candlestick: 'K线图',
            k: 'K线图',
            heatmap: '热力图',
            map: '地图',
            parallel: '平行坐标图',
            lines: '线图',
            graph: '关系图',
            sankey: '桑基图',
            funnel: '漏斗图',
            gauge: '仪表盘图',
            pictorialBar: '象形柱图',
            themeRiver: '主题河流图',
            sunburst: '旭日图'
        }
    },
    aria: {
        general: {
            withTitle: '这是一个关于“{title}”的图表。',
            withoutTitle: '这是一个图表，'
        },
        series: {
            single: {
                prefix: '',
                withName: '图表类型是{seriesType}，表示{seriesName}。',
                withoutName: '图表类型是{seriesType}。'
            },
            multiple: {
                prefix: '它由{seriesCount}个图表系列组成。',
                withName: '第{seriesId}个系列是一个表示{seriesName}的{seriesType}，',
                withoutName: '第{seriesId}个系列是一个{seriesType}，',
                separator: {
                    middle: '；',
                    end: '。'
                }
            }
        },
        data: {
            allData: '其数据是——',
            partialData: '其中，前{displayCnt}项是——',
            withName: '{name}的数据是{value}',
            withoutName: '{value}',
            separator: {
                middle: '，',
                end: ''
            }
        }
    }
};

var aria = function (dom, ecModel) {
    var ariaModel = ecModel.getModel('aria');
    if (!ariaModel.get('show')) {
        return;
    }
    else if (ariaModel.get('description')) {
        dom.setAttribute('aria-label', ariaModel.get('description'));
        return;
    }

    var seriesCnt = 0;
    ecModel.eachSeries(function (seriesModel, idx) {
        ++seriesCnt;
    }, this);

    var maxDataCnt = ariaModel.get('data.maxCount') || 10;
    var maxSeriesCnt = ariaModel.get('series.maxCount') || 10;
    var displaySeriesCnt = Math.min(seriesCnt, maxSeriesCnt);

    var ariaLabel;
    if (seriesCnt < 1) {
        // No series, no aria label
        return;
    }
    else {
        var title = getTitle();
        if (title) {
            ariaLabel = replace(getConfig('general.withTitle'), {
                title: title
            });
        }
        else {
            ariaLabel = getConfig('general.withoutTitle');
        }

        var seriesLabels = [];
        var prefix = seriesCnt > 1
            ? 'series.multiple.prefix'
            : 'series.single.prefix';
        ariaLabel += replace(getConfig(prefix), { seriesCount: seriesCnt });

        ecModel.eachSeries(function (seriesModel, idx) {
            if (idx < displaySeriesCnt) {
                var seriesLabel;

                var seriesName = seriesModel.get('name');
                var seriesTpl = 'series.'
                    + (seriesCnt > 1 ? 'multiple' : 'single') + '.';
                seriesLabel = getConfig(seriesName
                    ? seriesTpl + 'withName'
                    : seriesTpl + 'withoutName');

                seriesLabel = replace(seriesLabel, {
                    seriesId: seriesModel.seriesIndex,
                    seriesName: seriesModel.get('name'),
                    seriesType: getSeriesTypeName(seriesModel.subType)
                });

                var data = seriesModel.getData();
                window.data = data;
                if (data.count() > maxDataCnt) {
                    // Show part of data
                    seriesLabel += replace(getConfig('data.partialData'), {
                        displayCnt: maxDataCnt
                    });
                }
                else {
                    seriesLabel += getConfig('data.allData');
                }

                var dataLabels = [];
                for (var i = 0; i < data.count(); i++) {
                    if (i < maxDataCnt) {
                        var name = data.getName(i);
                        var value = retrieveRawValue(data, i);
                        dataLabels.push(
                            replace(
                                name
                                    ? getConfig('data.withName')
                                    : getConfig('data.withoutName'),
                                {
                                    name: name,
                                    value: value
                                }
                            )
                        );
                    }
                }
                seriesLabel += dataLabels
                    .join(getConfig('data.separator.middle'))
                    + getConfig('data.separator.end');

                seriesLabels.push(seriesLabel);
            }
        });

        ariaLabel += seriesLabels
            .join(getConfig('series.multiple.separator.middle'))
            + getConfig('series.multiple.separator.end');

        dom.setAttribute('aria-label', ariaLabel);
    }

    function replace(str, keyValues) {
        if (typeof str !== 'string') {
            return str;
        }

        var result = str;
        each$1(keyValues, function (value, key) {
            result = result.replace(
                new RegExp('\\{\\s*' + key + '\\s*\\}', 'g'),
                value
            );
        });
        return result;
    }

    function getConfig(path) {
        var userConfig = ariaModel.get(path);
        if (userConfig == null) {
            var pathArr = path.split('.');
            var result = lang.aria;
            for (var i = 0; i < pathArr.length; ++i) {
                result = result[pathArr[i]];
            }
            return result;
        }
        else {
            return userConfig;
        }
    }

    function getTitle() {
        var title = ecModel.getModel('title').option;
        if (title && title.length) {
            title = title[0];
        }
        return title && title.text;
    }

    function getSeriesTypeName(type) {
        return lang.series.typeNames[type] || '自定义图';
    }
};

var PI$1 = Math.PI;

/**
 * @param {module:echarts/ExtensionAPI} api
 * @param {Object} [opts]
 * @param {string} [opts.text]
 * @param {string} [opts.color]
 * @param {string} [opts.textColor]
 * @return {module:zrender/Element}
 */
var loadingDefault = function (api, opts) {
    opts = opts || {};
    defaults(opts, {
        text: 'loading',
        color: '#c23531',
        textColor: '#000',
        maskColor: 'rgba(255, 255, 255, 0.8)',
        zlevel: 0
    });
    var mask = new Rect({
        style: {
            fill: opts.maskColor
        },
        zlevel: opts.zlevel,
        z: 10000
    });
    var arc = new Arc({
        shape: {
            startAngle: -PI$1 / 2,
            endAngle: -PI$1 / 2 + 0.1,
            r: 10
        },
        style: {
            stroke: opts.color,
            lineCap: 'round',
            lineWidth: 5
        },
        zlevel: opts.zlevel,
        z: 10001
    });
    var labelRect = new Rect({
        style: {
            fill: 'none',
            text: opts.text,
            textPosition: 'right',
            textDistance: 10,
            textFill: opts.textColor
        },
        zlevel: opts.zlevel,
        z: 10001
    });

    arc.animateShape(true)
        .when(1000, {
            endAngle: PI$1 * 3 / 2
        })
        .start('circularInOut');
    arc.animateShape(true)
        .when(1000, {
            startAngle: PI$1 * 3 / 2
        })
        .delay(300)
        .start('circularInOut');

    var group = new Group();
    group.add(arc);
    group.add(labelRect);
    group.add(mask);
    // Inject resize
    group.resize = function () {
        var cx = api.getWidth() / 2;
        var cy = api.getHeight() / 2;
        arc.setShape({
            cx: cx,
            cy: cy
        });
        var r = arc.shape.r;
        labelRect.setShape({
            x: cx - r,
            y: cy - r,
            width: r * 2,
            height: r * 2
        });

        mask.setShape({
            x: 0,
            y: 0,
            width: api.getWidth(),
            height: api.getHeight()
        });
    };
    group.resize();
    return group;
};

/**
 * @module echarts/stream/Scheduler
 */

/**
 * @constructor
 */
function Scheduler(ecInstance, api, dataProcessorHandlers, visualHandlers) {
    // this._pipelineMap = createHashMap();

    this.ecInstance = ecInstance;
    this.api = api;
    this.unfinished;

    // Fix current processors in case that in some rear cases that
    // processors might be registered after echarts instance created.
    // Register processors incrementally for a echarts instance is
    // not supported by this stream architecture.
    this._dataProcessorHandlers = dataProcessorHandlers.slice();
    this._visualHandlers = visualHandlers.slice();

    /**
     * @private
     * @type {
     *     [handlerUID: string]: {
     *         seriesTaskMap?: {
     *             [seriesUID: string]: Task
     *         },
     *         overallTask?: Task
     *     }
     * }
     */
    this._stageTaskMap = createHashMap();
}

var proto = Scheduler.prototype;

// If seriesModel provided, incremental threshold is check by series data.
proto.getPerformArgs = function (task, isBlock) {
    // For overall task
    if (!task.__pipeline) {
        return;
    }

    var pipeline = this._pipelineMap.get(task.__pipeline.id);
    var pCtx = pipeline.context;
    var incremental = !isBlock
        && pipeline.progressiveEnabled
        && (!pCtx || pCtx.canProgressiveRender)
        && task.__idxInPipeline > pipeline.bockIndex;

    return {step: incremental ? pipeline.step : null};
};

proto.getPipeline = function (pipelineId) {
    return this._pipelineMap.get(pipelineId);
};

/**
 * Current, progressive rendering starts from visual and layout.
 * Always detect render mode in the same stage, avoiding that incorrect
 * detection caused by data filtering.
 * Caution:
 * `updateStreamModes` use `seriesModel.getData()`.
 */
proto.updateStreamModes = function (seriesModel, view) {
    var pipeline = this._pipelineMap.get(seriesModel.uid);
    var data = seriesModel.getData();
    var dataLen = data.count();

    // `canProgressiveRender` means that can render progressively in each
    // animation frame. Note that some types of series do not provide
    // `view.incrementalPrepareRender` but support `chart.appendData`. We
    // use the term `incremental` but not `progressive` to describe the
    // case that `chart.appendData`.
    var canProgressiveRender = pipeline.progressiveEnabled
        && view.incrementalPrepareRender
        && dataLen >= pipeline.threshold;

    var large = seriesModel.get('large') && dataLen >= seriesModel.get('largeThreshold');

    seriesModel.pipelineContext = pipeline.context = {
        canProgressiveRender: canProgressiveRender,
        large: large
    };
};

proto.restorePipelines = function (ecModel) {
    var scheduler = this;
    var pipelineMap = scheduler._pipelineMap = createHashMap();
    ecModel.eachSeries(function (seriesModel) {
        var progressive = seriesModel.getProgressive();
        var pipelineId = seriesModel.uid;

        pipelineMap.set(pipelineId, {
            id: pipelineId,
            head: null,
            tail: null,
            threshold: seriesModel.getProgressiveThreshold(),
            progressiveEnabled: progressive
                && !(seriesModel.preventIncremental && seriesModel.preventIncremental()),
            bockIndex: -1,
            step: progressive || 700, // ??? Temporarily number
            count: 0
        });

        pipe(scheduler, seriesModel, seriesModel.dataTask);
    });
};

proto.prepareStageTasks = function () {
    var stageTaskMap = this._stageTaskMap;
    var ecModel = this.ecInstance.getModel();
    var api = this.api;

    each$1([this._dataProcessorHandlers, this._visualHandlers], function (stageHandlers) {
        each$1(stageHandlers, function (handler) {
            var record = stageTaskMap.get(handler.uid) || stageTaskMap.set(handler.uid, []);

            handler.reset && createSeriesStageTask(this, handler, record, ecModel, api);
            handler.overallReset && createOverallStageTask(this, handler, record, ecModel, api);
        }, this);
    }, this);
};

proto.prepareView = function (view, model, ecModel, api) {
    var renderTask = view.renderTask;
    var context = renderTask.context;

    context.model = model;
    context.ecModel = ecModel;
    context.api = api;

    renderTask.__block = !view.incrementalPrepareRender;

    pipe(this, model, renderTask);
};


proto.performDataProcessorTasks = function (ecModel, payload) {
    // If we do not use `block` here, it should be considered when to update modes.
    performStageTasks(this, this._dataProcessorHandlers, ecModel, payload, {block: true});
};

// opt
// opt.visualType: 'visual' or 'layout'
// opt.setDirty
proto.performVisualTasks = function (ecModel, payload, opt) {
    performStageTasks(this, this._visualHandlers, ecModel, payload, opt);
};

function performStageTasks(scheduler, stageHandlers, ecModel, payload, opt) {
    opt = opt || {};
    var unfinished;

    each$1(stageHandlers, function (stageHandler, idx) {
        if (opt.visualType && opt.visualType !== stageHandler.visualType) {
            return;
        }

        var stageHandlerRecord = scheduler._stageTaskMap.get(stageHandler.uid);
        var seriesTaskMap = stageHandlerRecord.seriesTaskMap;
        var overallTask = stageHandlerRecord.overallTask;

        if (overallTask) {
            var overallNeedDirty;
            var agentStubMap = overallTask.agentStubMap;
            agentStubMap.each(function (stub) {
                if (needSetDirty(opt, stub)) {
                    stub.dirty();
                    overallNeedDirty = true;
                }
            });
            overallNeedDirty && overallTask.dirty();
            updatePayload(overallTask, payload);
            var performArgs = scheduler.getPerformArgs(overallTask, opt.block);
            // Execute stubs firstly, which may set the overall task dirty,
            // then execute the overall task. And stub will call seriesModel.setData,
            // which ensures that in the overallTask seriesModel.getData() will not
            // return incorrect data.
            agentStubMap.each(function (stub) {
                stub.perform(performArgs);
            });
            unfinished |= overallTask.perform(performArgs);
        }
        else if (seriesTaskMap) {
            seriesTaskMap.each(function (task, pipelineId) {
                if (needSetDirty(opt, task)) {
                    task.dirty();
                }
                var performArgs = scheduler.getPerformArgs(task, opt.block);
                performArgs.skip = !stageHandler.performRawSeries
                    && ecModel.isSeriesFiltered(task.context.model);
                updatePayload(task, payload);
                unfinished |= task.perform(performArgs);
            });
        }
    });

    function needSetDirty(opt, task) {
        return opt.setDirty && (!opt.dirtyMap || opt.dirtyMap.get(task.__pipeline.id));
    }

    scheduler.unfinished |= unfinished;
}

proto.performSeriesTasks = function (ecModel) {
    var unfinished;

    ecModel.eachSeries(function (seriesModel) {
        // Progress to the end for dataInit and dataRestore.
        unfinished |= seriesModel.dataTask.perform();
    });

    this.unfinished |= unfinished;
};

proto.plan = function () {
    // Travel pipelines, check block.
    this._pipelineMap.each(function (pipeline) {
        var task = pipeline.tail;
        do {
            if (task.__block) {
                pipeline.bockIndex = task.__idxInPipeline;
                break;
            }
            task = task.getUpstream();
        }
        while (task);
    });
};

var updatePayload = proto.updatePayload = function (task, payload) {
    payload !== 'remain' && (task.context.payload = payload);
};

function createSeriesStageTask(scheduler, stageHandler, stageHandlerRecord, ecModel, api) {
    var seriesTaskMap = stageHandlerRecord.seriesTaskMap
        || (stageHandlerRecord.seriesTaskMap = createHashMap());
    var seriesType = stageHandler.seriesType;
    var getTargetSeries = stageHandler.getTargetSeries;

    // If a stageHandler should cover all series, `createOnAllSeries` should be declared mandatorily,
    // to avoid some typo or abuse. Otherwise if an extension do not specify a `seriesType`,
    // it works but it may cause other irrelevant charts blocked.
    if (stageHandler.createOnAllSeries) {
        ecModel.eachRawSeries(create);
    }
    else if (seriesType) {
        ecModel.eachRawSeriesByType(seriesType, create);
    }
    else if (getTargetSeries) {
        getTargetSeries(ecModel, api).each(create);
    }

    function create(seriesModel) {
        var pipelineId = seriesModel.uid;

        // Init tasks for each seriesModel only once.
        // Reuse original task instance.
        var task = seriesTaskMap.get(pipelineId)
            || seriesTaskMap.set(pipelineId, createTask({
                plan: seriesTaskPlan,
                reset: seriesTaskReset,
                count: seriesTaskCount
            }));
        task.context = {
            model: seriesModel,
            ecModel: ecModel,
            api: api,
            useClearVisual: stageHandler.isVisual && !stageHandler.isLayout,
            plan: stageHandler.plan,
            reset: stageHandler.reset,
            scheduler: scheduler
        };
        pipe(scheduler, seriesModel, task);
    }

    // Clear unused series tasks.
    var pipelineMap = scheduler._pipelineMap;
    seriesTaskMap.each(function (task, pipelineId) {
        if (!pipelineMap.get(pipelineId)) {
            task.dispose();
            seriesTaskMap.removeKey(pipelineId);
        }
    });
}

function createOverallStageTask(scheduler, stageHandler, stageHandlerRecord, ecModel, api) {
    var overallTask = stageHandlerRecord.overallTask = stageHandlerRecord.overallTask
        // For overall task, the function only be called on reset stage.
        || createTask({reset: overallTaskReset});

    overallTask.context = {
        ecModel: ecModel,
        api: api,
        overallReset: stageHandler.overallReset,
        scheduler: scheduler
    };

    // Reuse orignal stubs.
    var agentStubMap = overallTask.agentStubMap = overallTask.agentStubMap || createHashMap();

    var seriesType = stageHandler.seriesType;
    var getTargetSeries = stageHandler.getTargetSeries;
    var overallProgress = true;
    var isOverallFilter = stageHandler.isOverallFilter;

    // An overall task with seriesType detected or has `getTargetSeries`, we add
    // stub in each pipelines, it will set the overall task dirty when the pipeline
    // progress. Moreover, to avoid call the overall task each frame (too frequent),
    // we set the pipeline block.
    if (seriesType) {
        ecModel.eachRawSeriesByType(seriesType, createStub);
    }
    else if (getTargetSeries) {
        getTargetSeries(ecModel, api).each(createStub);
    }
    // Otherwise, (usually it is legancy case), the overall task will only be
    // executed when upstream dirty. Otherwise the progressive rendering of all
    // pipelines will be disabled unexpectedly. But it still needs stubs to receive
    // dirty info from upsteam.
    else {
        overallProgress = false;
        each$1(ecModel.getSeries(), createStub);
    }

    function createStub(seriesModel) {
        var pipelineId = seriesModel.uid;
        var stub = agentStubMap.get(pipelineId) || agentStubMap.set(pipelineId, createTask(
            {reset: stubReset, onDirty: stubOnDirty}
        ));
        stub.context = {
            model: seriesModel,
            overallProgress: overallProgress,
            isOverallFilter: isOverallFilter
        };
        stub.agent = overallTask;
        stub.__block = overallProgress;

        pipe(scheduler, seriesModel, stub);
    }

    // Clear unused stubs.
    var pipelineMap = scheduler._pipelineMap;
    agentStubMap.each(function (stub, pipelineId) {
        if (!pipelineMap.get(pipelineId)) {
            stub.dispose();
            agentStubMap.removeKey(pipelineId);
        }
    });
}

function overallTaskReset(context) {
    context.overallReset(
        context.ecModel, context.api, context.payload
    );
}

function stubReset(context, upstreamContext) {
    return context.overallProgress && stubProgress;
}

function stubProgress() {
    this.agent.dirty();
    this.getDownstream().dirty();
}

function stubOnDirty() {
    this.agent && this.agent.dirty();
}

function seriesTaskPlan(context) {
    return context.plan && context.plan(
        context.model, context.ecModel, context.api, context.payload
    );
}

function seriesTaskReset(context) {
    if (context.useClearVisual) {
        context.data.clearAllVisual();
    }
    var resetDefines = context.resetDefines = normalizeToArray(context.reset(
        context.model, context.ecModel, context.api, context.payload
    ));
    if (resetDefines.length) {
        return seriesTaskProgress;
    }
}

function seriesTaskProgress(params, context) {
    var data = context.data;
    var resetDefines = context.resetDefines;

    for (var k = 0; k < resetDefines.length; k++) {
        var resetDefine = resetDefines[k];
        if (resetDefine && resetDefine.dataEach) {
            for (var i = params.start; i < params.end; i++) {
                resetDefine.dataEach(data, i);
            }
        }
        else if (resetDefine && resetDefine.progress) {
            resetDefine.progress(params, data);
        }
    }
}

function seriesTaskCount(context) {
    return context.data.count();
}

function pipe(scheduler, seriesModel, task) {
    var pipelineId = seriesModel.uid;
    var pipeline = scheduler._pipelineMap.get(pipelineId);
    !pipeline.head && (pipeline.head = task);
    pipeline.tail && pipeline.tail.pipe(task);
    pipeline.tail = task;
    task.__idxInPipeline = pipeline.count++;
    task.__pipeline = pipeline;
}

Scheduler.wrapStageHandler = function (stageHandler, visualType) {
    if (isFunction$1(stageHandler)) {
        stageHandler = {
            overallReset: stageHandler,
            seriesType: detectSeriseType(stageHandler)
        };
    }

    stageHandler.uid = getUID('stageHandler');
    visualType && (stageHandler.visualType = visualType);

    return stageHandler;
};



/**
 * Only some legacy stage handlers (usually in echarts extensions) are pure function.
 * To ensure that they can work normally, they should work in block mode, that is,
 * they should not be started util the previous tasks finished. So they cause the
 * progressive rendering disabled. We try to detect the series type, to narrow down
 * the block range to only the series type they concern, but not all series.
 */
function detectSeriseType(legacyFunc) {
    seriesType = null;
    try {
        // Assume there is no async when calling `eachSeriesByType`.
        legacyFunc(ecModelMock, apiMock);
    }
    catch (e) {
    }
    return seriesType;
}

var ecModelMock = {};
var apiMock = {};
var seriesType;

mockMethods(ecModelMock, GlobalModel);
mockMethods(apiMock, ExtensionAPI);
ecModelMock.eachSeriesByType = ecModelMock.eachRawSeriesByType = function (type) {
    seriesType = type;
};
ecModelMock.eachComponent = function (cond) {
    if (cond.mainType === 'series' && cond.subType) {
        seriesType = cond.subType;
    }
};

function mockMethods(target, Clz) {
    for (var name in Clz.prototype) {
        // Do not use hasOwnProperty
        target[name] = noop;
    }
}

var colorAll = ['#37A2DA', '#32C5E9', '#67E0E3', '#9FE6B8', '#FFDB5C','#ff9f7f', '#fb7293', '#E062AE', '#E690D1', '#e7bcf3', '#9d96f5', '#8378EA', '#96BFFF'];

var lightTheme = {

    color: colorAll,

    colorLayer: [
        ['#37A2DA', '#ffd85c', '#fd7b5f'],
        ['#37A2DA', '#67E0E3', '#FFDB5C', '#ff9f7f', '#E062AE', '#9d96f5'],
        ['#37A2DA', '#32C5E9', '#9FE6B8', '#FFDB5C', '#ff9f7f', '#fb7293', '#e7bcf3', '#8378EA', '#96BFFF'],
        colorAll
    ]
};

var contrastColor = '#eee';
var axisCommon = function () {
    return {
        axisLine: {
            lineStyle: {
                color: contrastColor
            }
        },
        axisTick: {
            lineStyle: {
                color: contrastColor
            }
        },
        axisLabel: {
            textStyle: {
                color: contrastColor
            }
        },
        splitLine: {
            lineStyle: {
                type: 'dashed',
                color: '#aaa'
            }
        },
        splitArea: {
            areaStyle: {
                color: contrastColor
            }
        }
    };
};

var colorPalette = ['#dd6b66','#759aa0','#e69d87','#8dc1a9','#ea7e53','#eedd78','#73a373','#73b9bc','#7289ab', '#91ca8c','#f49f42'];
var theme = {
    color: colorPalette,
    backgroundColor: '#333',
    tooltip: {
        axisPointer: {
            lineStyle: {
                color: contrastColor
            },
            crossStyle: {
                color: contrastColor
            }
        }
    },
    legend: {
        textStyle: {
            color: contrastColor
        }
    },
    textStyle: {
        color: contrastColor
    },
    title: {
        textStyle: {
            color: contrastColor
        }
    },
    toolbox: {
        iconStyle: {
            normal: {
                borderColor: contrastColor
            }
        }
    },
    dataZoom: {
        textStyle: {
            color: contrastColor
        }
    },
    visualMap: {
        textStyle: {
            color: contrastColor
        }
    },
    timeline: {
        lineStyle: {
            color: contrastColor
        },
        itemStyle: {
            normal: {
                color: colorPalette[1]
            }
        },
        label: {
            normal: {
                textStyle: {
                    color: contrastColor
                }
            }
        },
        controlStyle: {
            normal: {
                color: contrastColor,
                borderColor: contrastColor
            }
        }
    },
    timeAxis: axisCommon(),
    logAxis: axisCommon(),
    valueAxis: axisCommon(),
    categoryAxis: axisCommon(),

    line: {
        symbol: 'circle'
    },
    graph: {
        color: colorPalette
    },
    gauge: {
        title: {
            textStyle: {
                color: contrastColor
            }
        }
    },
    candlestick: {
        itemStyle: {
            normal: {
                color: '#FD1050',
                color0: '#0CF49B',
                borderColor: '#FD1050',
                borderColor0: '#0CF49B'
            }
        }
    }
};
theme.categoryAxis.splitLine.show = false;

/*!
 * ECharts, a free, powerful charting and visualization library.
 *
 * Copyright (c) 2017, Baidu Inc.
 * All rights reserved.
 *
 * LICENSE
 * https://github.com/ecomfe/echarts/blob/master/LICENSE.txt
 */

var assert = assert$1;
var each = each$1;
var isFunction = isFunction$1;
var isObject = isObject$1;
var parseClassType = ComponentModel.parseClassType;

var version = '4.0.4';

var dependencies = {
    zrender: '4.0.3'
};

var TEST_FRAME_REMAIN_TIME = 1;

var PRIORITY_PROCESSOR_FILTER = 1000;
var PRIORITY_PROCESSOR_STATISTIC = 5000;

var PRIORITY_VISUAL_LAYOUT = 1000;
var PRIORITY_VISUAL_GLOBAL = 2000;
var PRIORITY_VISUAL_CHART = 3000;
var PRIORITY_VISUAL_COMPONENT = 4000;
// FIXME
// necessary?
var PRIORITY_VISUAL_BRUSH = 5000;

var PRIORITY = {
    PROCESSOR: {
        FILTER: PRIORITY_PROCESSOR_FILTER,
        STATISTIC: PRIORITY_PROCESSOR_STATISTIC
    },
    VISUAL: {
        LAYOUT: PRIORITY_VISUAL_LAYOUT,
        GLOBAL: PRIORITY_VISUAL_GLOBAL,
        CHART: PRIORITY_VISUAL_CHART,
        COMPONENT: PRIORITY_VISUAL_COMPONENT,
        BRUSH: PRIORITY_VISUAL_BRUSH
    }
};

// Main process have three entries: `setOption`, `dispatchAction` and `resize`,
// where they must not be invoked nestedly, except the only case: invoke
// dispatchAction with updateMethod "none" in main process.
// This flag is used to carry out this rule.
// All events will be triggered out side main process (i.e. when !this[IN_MAIN_PROCESS]).
var IN_MAIN_PROCESS = '__flagInMainProcess';
var OPTION_UPDATED = '__optionUpdated';
var ACTION_REG = /^[a-zA-Z0-9_]+$/;


function createRegisterEventWithLowercaseName(method) {
    return function (eventName, handler, context) {
        // Event name is all lowercase
        eventName = eventName && eventName.toLowerCase();
        Eventful.prototype[method].call(this, eventName, handler, context);
    };
}

/**
 * @module echarts~MessageCenter
 */
function MessageCenter() {
    Eventful.call(this);
}
MessageCenter.prototype.on = createRegisterEventWithLowercaseName('on');
MessageCenter.prototype.off = createRegisterEventWithLowercaseName('off');
MessageCenter.prototype.one = createRegisterEventWithLowercaseName('one');
mixin(MessageCenter, Eventful);

/**
 * @module echarts~ECharts
 */
function ECharts(dom, theme$$1, opts) {
    opts = opts || {};

    // Get theme by name
    if (typeof theme$$1 === 'string') {
        theme$$1 = themeStorage[theme$$1];
    }

    /**
     * @type {string}
     */
    this.id;

    /**
     * Group id
     * @type {string}
     */
    this.group;

    /**
     * @type {HTMLElement}
     * @private
     */
    this._dom = dom;

    var defaultRenderer = 'canvas';
    if (__DEV__) {
        defaultRenderer = (
            typeof window === 'undefined' ? global : window
        ).__ECHARTS__DEFAULT__RENDERER__ || defaultRenderer;
    }

    /**
     * @type {module:zrender/ZRender}
     * @private
     */
    var zr = this._zr = init$1(dom, {
        renderer: opts.renderer || defaultRenderer,
        devicePixelRatio: opts.devicePixelRatio,
        width: opts.width,
        height: opts.height
    });

    /**
     * Expect 60 pfs.
     * @type {Function}
     * @private
     */
    this._throttledZrFlush = throttle(bind(zr.flush, zr), 17);

    var theme$$1 = clone(theme$$1);
    theme$$1 && backwardCompat(theme$$1, true);
    /**
     * @type {Object}
     * @private
     */
    this._theme = theme$$1;

    /**
     * @type {Array.<module:echarts/view/Chart>}
     * @private
     */
    this._chartsViews = [];

    /**
     * @type {Object.<string, module:echarts/view/Chart>}
     * @private
     */
    this._chartsMap = {};

    /**
     * @type {Array.<module:echarts/view/Component>}
     * @private
     */
    this._componentsViews = [];

    /**
     * @type {Object.<string, module:echarts/view/Component>}
     * @private
     */
    this._componentsMap = {};

    /**
     * @type {module:echarts/CoordinateSystem}
     * @private
     */
    this._coordSysMgr = new CoordinateSystemManager();

    /**
     * @type {module:echarts/ExtensionAPI}
     * @private
     */
    var api = this._api = createExtensionAPI(this);

    // Sort on demand
    function prioritySortFunc(a, b) {
        return a.__prio - b.__prio;
    }
    sort(visualFuncs, prioritySortFunc);
    sort(dataProcessorFuncs, prioritySortFunc);

    /**
     * @type {module:echarts/stream/Scheduler}
     */
    this._scheduler = new Scheduler(this, api, dataProcessorFuncs, visualFuncs);

    Eventful.call(this);

    /**
     * @type {module:echarts~MessageCenter}
     * @private
     */
    this._messageCenter = new MessageCenter();

    // Init mouse events
    this._initEvents();

    // In case some people write `window.onresize = chart.resize`
    this.resize = bind(this.resize, this);

    // Can't dispatch action during rendering procedure
    this._pendingActions = [];

    zr.animation.on('frame', this._onframe, this);

    bindRenderedEvent(zr, this);

    // ECharts instance can be used as value.
    setAsPrimitive(this);
}

var echartsProto = ECharts.prototype;

echartsProto._onframe = function () {
    if (this._disposed) {
        return;
    }

    var scheduler = this._scheduler;

    // Lazy update
    if (this[OPTION_UPDATED]) {
        var silent = this[OPTION_UPDATED].silent;

        this[IN_MAIN_PROCESS] = true;

        prepare(this);
        updateMethods.update.call(this);

        this[IN_MAIN_PROCESS] = false;

        this[OPTION_UPDATED] = false;

        flushPendingActions.call(this, silent);

        triggerUpdatedEvent.call(this, silent);
    }
    // Avoid do both lazy update and progress in one frame.
    else if (scheduler.unfinished) {
        // Stream progress.
        var remainTime = TEST_FRAME_REMAIN_TIME;
        var ecModel = this._model;
        var api = this._api;
        scheduler.unfinished = false;
        do {
            var startTime = +new Date();

            scheduler.performSeriesTasks(ecModel);

            // Currently dataProcessorFuncs do not check threshold.
            scheduler.performDataProcessorTasks(ecModel);

            updateStreamModes(this, ecModel);

            // Do not update coordinate system here. Because that coord system update in
            // each frame is not a good user experience. So we follow the rule that
            // the extent of the coordinate system is determin in the first frame (the
            // frame is executed immedietely after task reset.
            // this._coordSysMgr.update(ecModel, api);

            // console.log('--- ec frame visual ---', remainTime);
            scheduler.performVisualTasks(ecModel);

            renderSeries(this, this._model, api, 'remain');

            remainTime -= (+new Date() - startTime);
        }
        while (remainTime > 0 && scheduler.unfinished);

        // Call flush explicitly for trigger finished event.
        if (!scheduler.unfinished) {
            this._zr.flush();
        }
        // Else, zr flushing be ensue within the same frame,
        // because zr flushing is after onframe event.
    }
};

/**
 * @return {HTMLElement}
 */
echartsProto.getDom = function () {
    return this._dom;
};

/**
 * @return {module:zrender~ZRender}
 */
echartsProto.getZr = function () {
    return this._zr;
};

/**
 * Usage:
 * chart.setOption(option, notMerge, lazyUpdate);
 * chart.setOption(option, {
 *     notMerge: ...,
 *     lazyUpdate: ...,
 *     silent: ...
 * });
 *
 * @param {Object} option
 * @param {Object|boolean} [opts] opts or notMerge.
 * @param {boolean} [opts.notMerge=false]
 * @param {boolean} [opts.lazyUpdate=false] Useful when setOption frequently.
 */
echartsProto.setOption = function (option, notMerge, lazyUpdate) {
    if (__DEV__) {
        assert(!this[IN_MAIN_PROCESS], '`setOption` should not be called during main process.');
    }

    var silent;
    if (isObject(notMerge)) {
        lazyUpdate = notMerge.lazyUpdate;
        silent = notMerge.silent;
        notMerge = notMerge.notMerge;
    }

    this[IN_MAIN_PROCESS] = true;

    if (!this._model || notMerge) {
        var optionManager = new OptionManager(this._api);
        var theme$$1 = this._theme;
        var ecModel = this._model = new GlobalModel(null, null, theme$$1, optionManager);
        ecModel.scheduler = this._scheduler;
        ecModel.init(null, null, theme$$1, optionManager);
    }

    this._model.setOption(option, optionPreprocessorFuncs);

    if (lazyUpdate) {
        this[OPTION_UPDATED] = {silent: silent};
        this[IN_MAIN_PROCESS] = false;
    }
    else {
        prepare(this);

        updateMethods.update.call(this);

        // Ensure zr refresh sychronously, and then pixel in canvas can be
        // fetched after `setOption`.
        this._zr.flush();

        this[OPTION_UPDATED] = false;
        this[IN_MAIN_PROCESS] = false;

        flushPendingActions.call(this, silent);
        triggerUpdatedEvent.call(this, silent);
    }
};

/**
 * @DEPRECATED
 */
echartsProto.setTheme = function () {
    console.log('ECharts#setTheme() is DEPRECATED in ECharts 3.0');
};

/**
 * @return {module:echarts/model/Global}
 */
echartsProto.getModel = function () {
    return this._model;
};

/**
 * @return {Object}
 */
echartsProto.getOption = function () {
    return this._model && this._model.getOption();
};

/**
 * @return {number}
 */
echartsProto.getWidth = function () {
    return this._zr.getWidth();
};

/**
 * @return {number}
 */
echartsProto.getHeight = function () {
    return this._zr.getHeight();
};

/**
 * @return {number}
 */
echartsProto.getDevicePixelRatio = function () {
    return this._zr.painter.dpr || window.devicePixelRatio || 1;
};

/**
 * Get canvas which has all thing rendered
 * @param {Object} opts
 * @param {string} [opts.backgroundColor]
 * @return {string}
 */
echartsProto.getRenderedCanvas = function (opts) {
    if (!env$1.canvasSupported) {
        return;
    }
    opts = opts || {};
    opts.pixelRatio = opts.pixelRatio || 1;
    opts.backgroundColor = opts.backgroundColor
        || this._model.get('backgroundColor');
    var zr = this._zr;
    // var list = zr.storage.getDisplayList();
    // Stop animations
    // Never works before in init animation, so remove it.
    // zrUtil.each(list, function (el) {
    //     el.stopAnimation(true);
    // });
    return zr.painter.getRenderedCanvas(opts);
};

/**
 * Get svg data url
 * @return {string}
 */
echartsProto.getSvgDataUrl = function () {
    if (!env$1.svgSupported) {
        return;
    }

    var zr = this._zr;
    var list = zr.storage.getDisplayList();
    // Stop animations
    each$1(list, function (el) {
        el.stopAnimation(true);
    });

    return zr.painter.pathToDataUrl();
};

/**
 * @return {string}
 * @param {Object} opts
 * @param {string} [opts.type='png']
 * @param {string} [opts.pixelRatio=1]
 * @param {string} [opts.backgroundColor]
 * @param {string} [opts.excludeComponents]
 */
echartsProto.getDataURL = function (opts) {
    opts = opts || {};
    var excludeComponents = opts.excludeComponents;
    var ecModel = this._model;
    var excludesComponentViews = [];
    var self = this;

    each(excludeComponents, function (componentType) {
        ecModel.eachComponent({
            mainType: componentType
        }, function (component) {
            var view = self._componentsMap[component.__viewId];
            if (!view.group.ignore) {
                excludesComponentViews.push(view);
                view.group.ignore = true;
            }
        });
    });

    var url = this._zr.painter.getType() === 'svg'
        ? this.getSvgDataUrl()
        : this.getRenderedCanvas(opts).toDataURL(
            'image/' + (opts && opts.type || 'png')
        );

    each(excludesComponentViews, function (view) {
        view.group.ignore = false;
    });

    return url;
};


/**
 * @return {string}
 * @param {Object} opts
 * @param {string} [opts.type='png']
 * @param {string} [opts.pixelRatio=1]
 * @param {string} [opts.backgroundColor]
 */
echartsProto.getConnectedDataURL = function (opts) {
    if (!env$1.canvasSupported) {
        return;
    }
    var groupId = this.group;
    var mathMin = Math.min;
    var mathMax = Math.max;
    var MAX_NUMBER = Infinity;
    if (connectedGroups[groupId]) {
        var left = MAX_NUMBER;
        var top = MAX_NUMBER;
        var right = -MAX_NUMBER;
        var bottom = -MAX_NUMBER;
        var canvasList = [];
        var dpr = (opts && opts.pixelRatio) || 1;

        each$1(instances, function (chart, id) {
            if (chart.group === groupId) {
                var canvas = chart.getRenderedCanvas(
                    clone(opts)
                );
                var boundingRect = chart.getDom().getBoundingClientRect();
                left = mathMin(boundingRect.left, left);
                top = mathMin(boundingRect.top, top);
                right = mathMax(boundingRect.right, right);
                bottom = mathMax(boundingRect.bottom, bottom);
                canvasList.push({
                    dom: canvas,
                    left: boundingRect.left,
                    top: boundingRect.top
                });
            }
        });

        left *= dpr;
        top *= dpr;
        right *= dpr;
        bottom *= dpr;
        var width = right - left;
        var height = bottom - top;
        var targetCanvas = createCanvas();
        targetCanvas.width = width;
        targetCanvas.height = height;
        var zr = init$1(targetCanvas);

        each(canvasList, function (item) {
            var img = new ZImage({
                style: {
                    x: item.left * dpr - left,
                    y: item.top * dpr - top,
                    image: item.dom
                }
            });
            zr.add(img);
        });
        zr.refreshImmediately();

        return targetCanvas.toDataURL('image/' + (opts && opts.type || 'png'));
    }
    else {
        return this.getDataURL(opts);
    }
};

/**
 * Convert from logical coordinate system to pixel coordinate system.
 * See CoordinateSystem#convertToPixel.
 * @param {string|Object} finder
 *        If string, e.g., 'geo', means {geoIndex: 0}.
 *        If Object, could contain some of these properties below:
 *        {
 *            seriesIndex / seriesId / seriesName,
 *            geoIndex / geoId, geoName,
 *            bmapIndex / bmapId / bmapName,
 *            xAxisIndex / xAxisId / xAxisName,
 *            yAxisIndex / yAxisId / yAxisName,
 *            gridIndex / gridId / gridName,
 *            ... (can be extended)
 *        }
 * @param {Array|number} value
 * @return {Array|number} result
 */
echartsProto.convertToPixel = curry(doConvertPixel, 'convertToPixel');

/**
 * Convert from pixel coordinate system to logical coordinate system.
 * See CoordinateSystem#convertFromPixel.
 * @param {string|Object} finder
 *        If string, e.g., 'geo', means {geoIndex: 0}.
 *        If Object, could contain some of these properties below:
 *        {
 *            seriesIndex / seriesId / seriesName,
 *            geoIndex / geoId / geoName,
 *            bmapIndex / bmapId / bmapName,
 *            xAxisIndex / xAxisId / xAxisName,
 *            yAxisIndex / yAxisId / yAxisName
 *            gridIndex / gridId / gridName,
 *            ... (can be extended)
 *        }
 * @param {Array|number} value
 * @return {Array|number} result
 */
echartsProto.convertFromPixel = curry(doConvertPixel, 'convertFromPixel');

function doConvertPixel(methodName, finder, value) {
    var ecModel = this._model;
    var coordSysList = this._coordSysMgr.getCoordinateSystems();
    var result;

    finder = parseFinder(ecModel, finder);

    for (var i = 0; i < coordSysList.length; i++) {
        var coordSys = coordSysList[i];
        if (coordSys[methodName]
            && (result = coordSys[methodName](ecModel, finder, value)) != null
        ) {
            return result;
        }
    }

    if (__DEV__) {
        console.warn(
            'No coordinate system that supports ' + methodName + ' found by the given finder.'
        );
    }
}

/**
 * Is the specified coordinate systems or components contain the given pixel point.
 * @param {string|Object} finder
 *        If string, e.g., 'geo', means {geoIndex: 0}.
 *        If Object, could contain some of these properties below:
 *        {
 *            seriesIndex / seriesId / seriesName,
 *            geoIndex / geoId / geoName,
 *            bmapIndex / bmapId / bmapName,
 *            xAxisIndex / xAxisId / xAxisName,
 *            yAxisIndex / yAxisId / yAxisName,
 *            gridIndex / gridId / gridName,
 *            ... (can be extended)
 *        }
 * @param {Array|number} value
 * @return {boolean} result
 */
echartsProto.containPixel = function (finder, value) {
    var ecModel = this._model;
    var result;

    finder = parseFinder(ecModel, finder);

    each$1(finder, function (models, key) {
        key.indexOf('Models') >= 0 && each$1(models, function (model) {
            var coordSys = model.coordinateSystem;
            if (coordSys && coordSys.containPoint) {
                result |= !!coordSys.containPoint(value);
            }
            else if (key === 'seriesModels') {
                var view = this._chartsMap[model.__viewId];
                if (view && view.containPoint) {
                    result |= view.containPoint(value, model);
                }
                else {
                    if (__DEV__) {
                        console.warn(key + ': ' + (view
                            ? 'The found component do not support containPoint.'
                            : 'No view mapping to the found component.'
                        ));
                    }
                }
            }
            else {
                if (__DEV__) {
                    console.warn(key + ': containPoint is not supported');
                }
            }
        }, this);
    }, this);

    return !!result;
};

/**
 * Get visual from series or data.
 * @param {string|Object} finder
 *        If string, e.g., 'series', means {seriesIndex: 0}.
 *        If Object, could contain some of these properties below:
 *        {
 *            seriesIndex / seriesId / seriesName,
 *            dataIndex / dataIndexInside
 *        }
 *        If dataIndex is not specified, series visual will be fetched,
 *        but not data item visual.
 *        If all of seriesIndex, seriesId, seriesName are not specified,
 *        visual will be fetched from first series.
 * @param {string} visualType 'color', 'symbol', 'symbolSize'
 */
echartsProto.getVisual = function (finder, visualType) {
    var ecModel = this._model;

    finder = parseFinder(ecModel, finder, {defaultMainType: 'series'});

    var seriesModel = finder.seriesModel;

    if (__DEV__) {
        if (!seriesModel) {
            console.warn('There is no specified seires model');
        }
    }

    var data = seriesModel.getData();

    var dataIndexInside = finder.hasOwnProperty('dataIndexInside')
        ? finder.dataIndexInside
        : finder.hasOwnProperty('dataIndex')
        ? data.indexOfRawIndex(finder.dataIndex)
        : null;

    return dataIndexInside != null
        ? data.getItemVisual(dataIndexInside, visualType)
        : data.getVisual(visualType);
};

/**
 * Get view of corresponding component model
 * @param  {module:echarts/model/Component} componentModel
 * @return {module:echarts/view/Component}
 */
echartsProto.getViewOfComponentModel = function (componentModel) {
    return this._componentsMap[componentModel.__viewId];
};

/**
 * Get view of corresponding series model
 * @param  {module:echarts/model/Series} seriesModel
 * @return {module:echarts/view/Chart}
 */
echartsProto.getViewOfSeriesModel = function (seriesModel) {
    return this._chartsMap[seriesModel.__viewId];
};

var updateMethods = {

    prepareAndUpdate: function (payload) {
        prepare(this);
        updateMethods.update.call(this, payload);
    },

    /**
     * @param {Object} payload
     * @private
     */
    update: function (payload) {
        // console.profile && console.profile('update');

        var ecModel = this._model;
        var api = this._api;
        var zr = this._zr;
        var coordSysMgr = this._coordSysMgr;
        var scheduler = this._scheduler;

        // update before setOption
        if (!ecModel) {
            return;
        }

        ecModel.restoreData(payload);

        scheduler.performSeriesTasks(ecModel);

        // TODO
        // Save total ecModel here for undo/redo (after restoring data and before processing data).
        // Undo (restoration of total ecModel) can be carried out in 'action' or outside API call.

        // Create new coordinate system each update
        // In LineView may save the old coordinate system and use it to get the orignal point
        coordSysMgr.create(ecModel, api);

        scheduler.performDataProcessorTasks(ecModel, payload);

        // Current stream render is not supported in data process. So we can update
        // stream modes after data processing, where the filtered data is used to
        // deteming whether use progressive rendering.
        updateStreamModes(this, ecModel);

        // stackSeriesData(ecModel);

        coordSysMgr.update(ecModel, api);

        clearColorPalette(ecModel);
        scheduler.performVisualTasks(ecModel, payload);

        render(this, ecModel, api, payload);

        // Set background
        var backgroundColor = ecModel.get('backgroundColor') || 'transparent';

        // In IE8
        if (!env$1.canvasSupported) {
            var colorArr = parse(backgroundColor);
            backgroundColor = stringify(colorArr, 'rgb');
            if (colorArr[3] === 0) {
                backgroundColor = 'transparent';
            }
        }
        else {
            zr.setBackgroundColor(backgroundColor);
        }

        performPostUpdateFuncs(ecModel, api);

        // console.profile && console.profileEnd('update');
    },

    /**
     * @param {Object} payload
     * @private
     */
    updateTransform: function (payload) {
        var ecModel = this._model;
        var ecIns = this;
        var api = this._api;

        // update before setOption
        if (!ecModel) {
            return;
        }

        // ChartView.markUpdateMethod(payload, 'updateTransform');

        var componentDirtyList = [];
        ecModel.eachComponent(function (componentType, componentModel) {
            var componentView = ecIns.getViewOfComponentModel(componentModel);
            if (componentView && componentView.__alive) {
                if (componentView.updateTransform) {
                    var result = componentView.updateTransform(componentModel, ecModel, api, payload);
                    result && result.update && componentDirtyList.push(componentView);
                }
                else {
                    componentDirtyList.push(componentView);
                }
            }
        });

        var seriesDirtyMap = createHashMap();
        ecModel.eachSeries(function (seriesModel) {
            var chartView = ecIns._chartsMap[seriesModel.__viewId];
            if (chartView.updateTransform) {
                var result = chartView.updateTransform(seriesModel, ecModel, api, payload);
                result && result.update && seriesDirtyMap.set(seriesModel.uid, 1);
            }
            else {
                seriesDirtyMap.set(seriesModel.uid, 1);
            }
        });

        clearColorPalette(ecModel);
        // Keep pipe to the exist pipeline because it depends on the render task of the full pipeline.
        // this._scheduler.performVisualTasks(ecModel, payload, 'layout', true);
        this._scheduler.performVisualTasks(
            ecModel, payload, {setDirty: true, dirtyMap: seriesDirtyMap}
        );

        // Currently, not call render of components. Geo render cost a lot.
        // renderComponents(ecIns, ecModel, api, payload, componentDirtyList);
        renderSeries(ecIns, ecModel, api, payload, seriesDirtyMap);

        performPostUpdateFuncs(ecModel, this._api);
    },

    /**
     * @param {Object} payload
     * @private
     */
    updateView: function (payload) {
        var ecModel = this._model;

        // update before setOption
        if (!ecModel) {
            return;
        }

        Chart.markUpdateMethod(payload, 'updateView');

        clearColorPalette(ecModel);

        // Keep pipe to the exist pipeline because it depends on the render task of the full pipeline.
        this._scheduler.performVisualTasks(ecModel, payload, {setDirty: true});

        render(this, this._model, this._api, payload);

        performPostUpdateFuncs(ecModel, this._api);
    },

    /**
     * @param {Object} payload
     * @private
     */
    updateVisual: function (payload) {
        updateMethods.update.call(this, payload);

        // var ecModel = this._model;

        // // update before setOption
        // if (!ecModel) {
        //     return;
        // }

        // ChartView.markUpdateMethod(payload, 'updateVisual');

        // clearColorPalette(ecModel);

        // // Keep pipe to the exist pipeline because it depends on the render task of the full pipeline.
        // this._scheduler.performVisualTasks(ecModel, payload, {visualType: 'visual', setDirty: true});

        // render(this, this._model, this._api, payload);

        // performPostUpdateFuncs(ecModel, this._api);
    },

    /**
     * @param {Object} payload
     * @private
     */
    updateLayout: function (payload) {
        updateMethods.update.call(this, payload);

        // var ecModel = this._model;

        // // update before setOption
        // if (!ecModel) {
        //     return;
        // }

        // ChartView.markUpdateMethod(payload, 'updateLayout');

        // // Keep pipe to the exist pipeline because it depends on the render task of the full pipeline.
        // // this._scheduler.performVisualTasks(ecModel, payload, 'layout', true);
        // this._scheduler.performVisualTasks(ecModel, payload, {setDirty: true});

        // render(this, this._model, this._api, payload);

        // performPostUpdateFuncs(ecModel, this._api);
    }
};

function prepare(ecIns) {
    var ecModel = ecIns._model;
    var scheduler = ecIns._scheduler;

    scheduler.restorePipelines(ecModel);

    scheduler.prepareStageTasks();

    prepareView(ecIns, 'component', ecModel, scheduler);

    prepareView(ecIns, 'chart', ecModel, scheduler);

    scheduler.plan();
}

/**
 * @private
 */
function updateDirectly(ecIns, method, payload, mainType, subType) {
    var ecModel = ecIns._model;

    // broadcast
    if (!mainType) {
        // FIXME
        // Chart will not be update directly here, except set dirty.
        // But there is no such scenario now.
        each(ecIns._componentsViews.concat(ecIns._chartsViews), callView);
        return;
    }

    var query = {};
    query[mainType + 'Id'] = payload[mainType + 'Id'];
    query[mainType + 'Index'] = payload[mainType + 'Index'];
    query[mainType + 'Name'] = payload[mainType + 'Name'];

    var condition = {mainType: mainType, query: query};
    subType && (condition.subType = subType); // subType may be '' by parseClassType;

    // If dispatchAction before setOption, do nothing.
    ecModel && ecModel.eachComponent(condition, function (model, index) {
        callView(ecIns[
            mainType === 'series' ? '_chartsMap' : '_componentsMap'
        ][model.__viewId]);
    }, ecIns);

    function callView(view) {
        view && view.__alive && view[method] && view[method](
            view.__model, ecModel, ecIns._api, payload
        );
    }
}

/**
 * Resize the chart
 * @param {Object} opts
 * @param {number} [opts.width] Can be 'auto' (the same as null/undefined)
 * @param {number} [opts.height] Can be 'auto' (the same as null/undefined)
 * @param {boolean} [opts.silent=false]
 */
echartsProto.resize = function (opts) {
    if (__DEV__) {
        assert(!this[IN_MAIN_PROCESS], '`resize` should not be called during main process.');
    }

    this._zr.resize(opts);

    var ecModel = this._model;

    // Resize loading effect
    this._loadingFX && this._loadingFX.resize();

    if (!ecModel) {
        return;
    }

    var optionChanged = ecModel.resetOption('media');

    var silent = opts && opts.silent;

    this[IN_MAIN_PROCESS] = true;

    optionChanged && prepare(this);
    updateMethods.update.call(this);

    this[IN_MAIN_PROCESS] = false;

    flushPendingActions.call(this, silent);

    triggerUpdatedEvent.call(this, silent);
};

function updateStreamModes(ecIns, ecModel) {
    var chartsMap = ecIns._chartsMap;
    var scheduler = ecIns._scheduler;
    ecModel.eachSeries(function (seriesModel) {
        scheduler.updateStreamModes(seriesModel, chartsMap[seriesModel.__viewId]);
    });
}

/**
 * Show loading effect
 * @param  {string} [name='default']
 * @param  {Object} [cfg]
 */
echartsProto.showLoading = function (name, cfg) {
    if (isObject(name)) {
        cfg = name;
        name = '';
    }
    name = name || 'default';

    this.hideLoading();
    if (!loadingEffects[name]) {
        if (__DEV__) {
            console.warn('Loading effects ' + name + ' not exists.');
        }
        return;
    }
    var el = loadingEffects[name](this._api, cfg);
    var zr = this._zr;
    this._loadingFX = el;

    zr.add(el);
};

/**
 * Hide loading effect
 */
echartsProto.hideLoading = function () {
    this._loadingFX && this._zr.remove(this._loadingFX);
    this._loadingFX = null;
};

/**
 * @param {Object} eventObj
 * @return {Object}
 */
echartsProto.makeActionFromEvent = function (eventObj) {
    var payload = extend({}, eventObj);
    payload.type = eventActionMap[eventObj.type];
    return payload;
};

/**
 * @pubilc
 * @param {Object} payload
 * @param {string} [payload.type] Action type
 * @param {Object|boolean} [opt] If pass boolean, means opt.silent
 * @param {boolean} [opt.silent=false] Whether trigger events.
 * @param {boolean} [opt.flush=undefined]
 *                  true: Flush immediately, and then pixel in canvas can be fetched
 *                      immediately. Caution: it might affect performance.
 *                  false: Not not flush.
 *                  undefined: Auto decide whether perform flush.
 */
echartsProto.dispatchAction = function (payload, opt) {
    if (!isObject(opt)) {
        opt = {silent: !!opt};
    }

    if (!actions[payload.type]) {
        return;
    }

    // Avoid dispatch action before setOption. Especially in `connect`.
    if (!this._model) {
        return;
    }

    // May dispatchAction in rendering procedure
    if (this[IN_MAIN_PROCESS]) {
        this._pendingActions.push(payload);
        return;
    }

    doDispatchAction.call(this, payload, opt.silent);

    if (opt.flush) {
        this._zr.flush(true);
    }
    else if (opt.flush !== false && env$1.browser.weChat) {
        // In WeChat embeded browser, `requestAnimationFrame` and `setInterval`
        // hang when sliding page (on touch event), which cause that zr does not
        // refresh util user interaction finished, which is not expected.
        // But `dispatchAction` may be called too frequently when pan on touch
        // screen, which impacts performance if do not throttle them.
        this._throttledZrFlush();
    }

    flushPendingActions.call(this, opt.silent);

    triggerUpdatedEvent.call(this, opt.silent);
};

function doDispatchAction(payload, silent) {
    var payloadType = payload.type;
    var escapeConnect = payload.escapeConnect;
    var actionWrap = actions[payloadType];
    var actionInfo = actionWrap.actionInfo;

    var cptType = (actionInfo.update || 'update').split(':');
    var updateMethod = cptType.pop();
    cptType = cptType[0] != null && parseClassType(cptType[0]);

    this[IN_MAIN_PROCESS] = true;

    var payloads = [payload];
    var batched = false;
    // Batch action
    if (payload.batch) {
        batched = true;
        payloads = map(payload.batch, function (item) {
            item = defaults(extend({}, item), payload);
            item.batch = null;
            return item;
        });
    }

    var eventObjBatch = [];
    var eventObj;
    var isHighDown = payloadType === 'highlight' || payloadType === 'downplay';

    each(payloads, function (batchItem) {
        // Action can specify the event by return it.
        eventObj = actionWrap.action(batchItem, this._model, this._api);
        // Emit event outside
        eventObj = eventObj || extend({}, batchItem);
        // Convert type to eventType
        eventObj.type = actionInfo.event || eventObj.type;
        eventObjBatch.push(eventObj);

        // light update does not perform data process, layout and visual.
        if (isHighDown) {
            // method, payload, mainType, subType
            updateDirectly(this, updateMethod, batchItem, 'series');
        }
        else if (cptType) {
            updateDirectly(this, updateMethod, batchItem, cptType.main, cptType.sub);
        }
    }, this);

    if (updateMethod !== 'none' && !isHighDown && !cptType) {
        // Still dirty
        if (this[OPTION_UPDATED]) {
            // FIXME Pass payload ?
            prepare(this);
            updateMethods.update.call(this, payload);
            this[OPTION_UPDATED] = false;
        }
        else {
            updateMethods[updateMethod].call(this, payload);
        }
    }

    // Follow the rule of action batch
    if (batched) {
        eventObj = {
            type: actionInfo.event || payloadType,
            escapeConnect: escapeConnect,
            batch: eventObjBatch
        };
    }
    else {
        eventObj = eventObjBatch[0];
    }

    this[IN_MAIN_PROCESS] = false;

    !silent && this._messageCenter.trigger(eventObj.type, eventObj);
}

function flushPendingActions(silent) {
    var pendingActions = this._pendingActions;
    while (pendingActions.length) {
        var payload = pendingActions.shift();
        doDispatchAction.call(this, payload, silent);
    }
}

function triggerUpdatedEvent(silent) {
    !silent && this.trigger('updated');
}

/**
 * Event `rendered` is triggered when zr
 * rendered. It is useful for realtime
 * snapshot (reflect animation).
 *
 * Event `finished` is triggered when:
 * (1) zrender rendering finished.
 * (2) initial animation finished.
 * (3) progressive rendering finished.
 * (4) no pending action.
 * (5) no delayed setOption needs to be processed.
 */
function bindRenderedEvent(zr, ecIns) {
    zr.on('rendered', function () {

        ecIns.trigger('rendered');

        // The `finished` event should not be triggered repeatly,
        // so it should only be triggered when rendering indeed happend
        // in zrender. (Consider the case that dipatchAction is keep
        // triggering when mouse move).
        if (
            // Although zr is dirty if initial animation is not finished
            // and this checking is called on frame, we also check
            // animation finished for robustness.
            zr.animation.isFinished()
            && !ecIns[OPTION_UPDATED]
            && !ecIns._scheduler.unfinished
            && !ecIns._pendingActions.length
        ) {
            ecIns.trigger('finished');
        }
    });
}

/**
 * @param {Object} params
 * @param {number} params.seriesIndex
 * @param {Array|TypedArray} params.data
 */
echartsProto.appendData = function (params) {
    var seriesIndex = params.seriesIndex;
    var ecModel = this.getModel();
    var seriesModel = ecModel.getSeriesByIndex(seriesIndex);

    if (__DEV__) {
        assert(params.data && seriesModel);
    }

    seriesModel.appendData(params);

    // Note: `appendData` does not support that update extent of coordinate
    // system, util some scenario require that. In the expected usage of
    // `appendData`, the initial extent of coordinate system should better
    // be fixed by axis `min`/`max` setting or initial data, otherwise if
    // the extent changed while `appendData`, the location of the painted
    // graphic elements have to be changed, which make the usage of
    // `appendData` meaningless.

    this._scheduler.unfinished = true;
};

/**
 * Register event
 * @method
 */
echartsProto.on = createRegisterEventWithLowercaseName('on');
echartsProto.off = createRegisterEventWithLowercaseName('off');
echartsProto.one = createRegisterEventWithLowercaseName('one');

/**
 * Prepare view instances of charts and components
 * @param  {module:echarts/model/Global} ecModel
 * @private
 */
function prepareView(ecIns, type, ecModel, scheduler) {
    var isComponent = type === 'component';
    var viewList = isComponent ? ecIns._componentsViews : ecIns._chartsViews;
    var viewMap = isComponent ? ecIns._componentsMap : ecIns._chartsMap;
    var zr = ecIns._zr;
    var api = ecIns._api;

    for (var i = 0; i < viewList.length; i++) {
        viewList[i].__alive = false;
    }

    isComponent
        ? ecModel.eachComponent(function (componentType, model) {
            componentType !== 'series' && doPrepare(model);
        })
        : ecModel.eachSeries(doPrepare);

    function doPrepare(model) {
        // Consider: id same and type changed.
        var viewId = '_ec_' + model.id + '_' + model.type;
        var view = viewMap[viewId];
        if (!view) {
            var classType = parseClassType(model.type);
            var Clazz = isComponent
                ? Component.getClass(classType.main, classType.sub)
                : Chart.getClass(classType.sub);

            if (__DEV__) {
                assert(Clazz, classType.sub + ' does not exist.');
            }

            view = new Clazz();
            view.init(ecModel, api);
            viewMap[viewId] = view;
            viewList.push(view);
            zr.add(view.group);
        }

        model.__viewId = view.__id = viewId;
        view.__alive = true;
        view.__model = model;
        view.group.__ecComponentInfo = {
            mainType: model.mainType,
            index: model.componentIndex
        };
        !isComponent && scheduler.prepareView(view, model, ecModel, api);
    }

    for (var i = 0; i < viewList.length;) {
        var view = viewList[i];
        if (!view.__alive) {
            !isComponent && view.renderTask.dispose();
            zr.remove(view.group);
            view.dispose(ecModel, api);
            viewList.splice(i, 1);
            delete viewMap[view.__id];
            view.__id = view.group.__ecComponentInfo = null;
        }
        else {
            i++;
        }
    }
}

// /**
//  * Encode visual infomation from data after data processing
//  *
//  * @param {module:echarts/model/Global} ecModel
//  * @param {object} layout
//  * @param {boolean} [layoutFilter] `true`: only layout,
//  *                                 `false`: only not layout,
//  *                                 `null`/`undefined`: all.
//  * @param {string} taskBaseTag
//  * @private
//  */
// function startVisualEncoding(ecIns, ecModel, api, payload, layoutFilter) {
//     each(visualFuncs, function (visual, index) {
//         var isLayout = visual.isLayout;
//         if (layoutFilter == null
//             || (layoutFilter === false && !isLayout)
//             || (layoutFilter === true && isLayout)
//         ) {
//             visual.func(ecModel, api, payload);
//         }
//     });
// }

function clearColorPalette(ecModel) {
    ecModel.clearColorPalette();
    ecModel.eachSeries(function (seriesModel) {
        seriesModel.clearColorPalette();
    });
}

function render(ecIns, ecModel, api, payload) {

    renderComponents(ecIns, ecModel, api, payload);

    each(ecIns._chartsViews, function (chart) {
        chart.__alive = false;
    });

    renderSeries(ecIns, ecModel, api, payload);

    // Remove groups of unrendered charts
    each(ecIns._chartsViews, function (chart) {
        if (!chart.__alive) {
            chart.remove(ecModel, api);
        }
    });
}

function renderComponents(ecIns, ecModel, api, payload, dirtyList) {
    each(dirtyList || ecIns._componentsViews, function (componentView) {
        var componentModel = componentView.__model;
        componentView.render(componentModel, ecModel, api, payload);

        updateZ(componentModel, componentView);
    });
}

/**
 * Render each chart and component
 * @private
 */
function renderSeries(ecIns, ecModel, api, payload, dirtyMap) {
    // Render all charts
    var scheduler = ecIns._scheduler;
    var unfinished;
    ecModel.eachSeries(function (seriesModel) {
        var chartView = ecIns._chartsMap[seriesModel.__viewId];
        chartView.__alive = true;

        var renderTask = chartView.renderTask;
        scheduler.updatePayload(renderTask, payload);

        if (dirtyMap && dirtyMap.get(seriesModel.uid)) {
            renderTask.dirty();
        }

        unfinished |= renderTask.perform(scheduler.getPerformArgs(renderTask));

        chartView.group.silent = !!seriesModel.get('silent');

        updateZ(seriesModel, chartView);

        updateBlend(seriesModel, chartView);
    });
    scheduler.unfinished |= unfinished;

    // If use hover layer
    updateHoverLayerStatus(ecIns._zr, ecModel);

    // Add aria
    aria(ecIns._zr.dom, ecModel);
}

function performPostUpdateFuncs(ecModel, api) {
    each(postUpdateFuncs, function (func) {
        func(ecModel, api);
    });
}


var MOUSE_EVENT_NAMES = [
    'click', 'dblclick', 'mouseover', 'mouseout', 'mousemove',
    'mousedown', 'mouseup', 'globalout', 'contextmenu'
];

/**
 * @private
 */
echartsProto._initEvents = function () {
    each(MOUSE_EVENT_NAMES, function (eveName) {
        this._zr.on(eveName, function (e) {
            var ecModel = this.getModel();
            var el = e.target;
            var params;

            // no e.target when 'globalout'.
            if (eveName === 'globalout') {
                params = {};
            }
            else if (el && el.dataIndex != null) {
                var dataModel = el.dataModel || ecModel.getSeriesByIndex(el.seriesIndex);
                params = dataModel && dataModel.getDataParams(el.dataIndex, el.dataType) || {};
            }
            // If element has custom eventData of components
            else if (el && el.eventData) {
                params = extend({}, el.eventData);
            }

            if (params) {
                params.event = e;
                params.type = eveName;
                this.trigger(eveName, params);
            }

        }, this);
    }, this);

    each(eventActionMap, function (actionType, eventType) {
        this._messageCenter.on(eventType, function (event) {
            this.trigger(eventType, event);
        }, this);
    }, this);
};

/**
 * @return {boolean}
 */
echartsProto.isDisposed = function () {
    return this._disposed;
};

/**
 * Clear
 */
echartsProto.clear = function () {
    this.setOption({ series: [] }, true);
};

/**
 * Dispose instance
 */
echartsProto.dispose = function () {
    if (this._disposed) {
        if (__DEV__) {
            console.warn('Instance ' + this.id + ' has been disposed');
        }
        return;
    }
    this._disposed = true;

    setAttribute(this.getDom(), DOM_ATTRIBUTE_KEY, '');

    var api = this._api;
    var ecModel = this._model;

    each(this._componentsViews, function (component) {
        component.dispose(ecModel, api);
    });
    each(this._chartsViews, function (chart) {
        chart.dispose(ecModel, api);
    });

    // Dispose after all views disposed
    this._zr.dispose();

    delete instances[this.id];
};

mixin(ECharts, Eventful);

function updateHoverLayerStatus(zr, ecModel) {
    var storage = zr.storage;
    var elCount = 0;
    storage.traverse(function (el) {
        if (!el.isGroup) {
            elCount++;
        }
    });
    if (elCount > ecModel.get('hoverLayerThreshold') && !env$1.node) {
        storage.traverse(function (el) {
            if (!el.isGroup) {
                // Don't switch back.
                el.useHoverLayer = true;
            }
        });
    }
}

/**
 * Update chart progressive and blend.
 * @param {module:echarts/model/Series|module:echarts/model/Component} model
 * @param {module:echarts/view/Component|module:echarts/view/Chart} view
 */
function updateBlend(seriesModel, chartView) {
    var blendMode = seriesModel.get('blendMode') || null;
    if (__DEV__) {
        if (!env$1.canvasSupported && blendMode && blendMode !== 'source-over') {
            console.warn('Only canvas support blendMode');
        }
    }
    chartView.group.traverse(function (el) {
        // FIXME marker and other components
        if (!el.isGroup) {
            // Only set if blendMode is changed. In case element is incremental and don't wan't to rerender.
            if (el.style.blend !== blendMode) {
                el.setStyle('blend', blendMode);
            }
        }
        if (el.eachPendingDisplayable) {
            el.eachPendingDisplayable(function (displayable) {
                displayable.setStyle('blend', blendMode);
            });
        }
    });
}

/**
 * @param {module:echarts/model/Series|module:echarts/model/Component} model
 * @param {module:echarts/view/Component|module:echarts/view/Chart} view
 */
function updateZ(model, view) {
    var z = model.get('z');
    var zlevel = model.get('zlevel');
    // Set z and zlevel
    view.group.traverse(function (el) {
        if (el.type !== 'group') {
            z != null && (el.z = z);
            zlevel != null && (el.zlevel = zlevel);
        }
    });
}

function createExtensionAPI(ecInstance) {
    var coordSysMgr = ecInstance._coordSysMgr;
    return extend(new ExtensionAPI(ecInstance), {
        // Inject methods
        getCoordinateSystems: bind(
            coordSysMgr.getCoordinateSystems, coordSysMgr
        ),
        getComponentByElement: function (el) {
            while (el) {
                var modelInfo = el.__ecComponentInfo;
                if (modelInfo != null) {
                    return ecInstance._model.getComponent(modelInfo.mainType, modelInfo.index);
                }
                el = el.parent;
            }
        }
    });
}

/**
 * @type {Object} key: actionType.
 * @inner
 */
var actions = {};

/**
 * Map eventType to actionType
 * @type {Object}
 */
var eventActionMap = {};

/**
 * Data processor functions of each stage
 * @type {Array.<Object.<string, Function>>}
 * @inner
 */
var dataProcessorFuncs = [];

/**
 * @type {Array.<Function>}
 * @inner
 */
var optionPreprocessorFuncs = [];

/**
 * @type {Array.<Function>}
 * @inner
 */
var postUpdateFuncs = [];

/**
 * Visual encoding functions of each stage
 * @type {Array.<Object.<string, Function>>}
 */
var visualFuncs = [];

/**
 * Theme storage
 * @type {Object.<key, Object>}
 */
var themeStorage = {};
/**
 * Loading effects
 */
var loadingEffects = {};

var instances = {};
var connectedGroups = {};

var idBase = new Date() - 0;
var groupIdBase = new Date() - 0;
var DOM_ATTRIBUTE_KEY = '_echarts_instance_';

var mapDataStores = {};

function enableConnect(chart) {
    var STATUS_PENDING = 0;
    var STATUS_UPDATING = 1;
    var STATUS_UPDATED = 2;
    var STATUS_KEY = '__connectUpdateStatus';

    function updateConnectedChartsStatus(charts, status) {
        for (var i = 0; i < charts.length; i++) {
            var otherChart = charts[i];
            otherChart[STATUS_KEY] = status;
        }
    }

    each(eventActionMap, function (actionType, eventType) {
        chart._messageCenter.on(eventType, function (event) {
            if (connectedGroups[chart.group] && chart[STATUS_KEY] !== STATUS_PENDING) {
                if (event && event.escapeConnect) {
                    return;
                }

                var action = chart.makeActionFromEvent(event);
                var otherCharts = [];

                each(instances, function (otherChart) {
                    if (otherChart !== chart && otherChart.group === chart.group) {
                        otherCharts.push(otherChart);
                    }
                });

                updateConnectedChartsStatus(otherCharts, STATUS_PENDING);
                each(otherCharts, function (otherChart) {
                    if (otherChart[STATUS_KEY] !== STATUS_UPDATING) {
                        otherChart.dispatchAction(action);
                    }
                });
                updateConnectedChartsStatus(otherCharts, STATUS_UPDATED);
            }
        });
    });
}

/**
 * @param {HTMLElement} dom
 * @param {Object} [theme]
 * @param {Object} opts
 * @param {number} [opts.devicePixelRatio] Use window.devicePixelRatio by default
 * @param {string} [opts.renderer] Currently only 'canvas' is supported.
 * @param {number} [opts.width] Use clientWidth of the input `dom` by default.
 *                              Can be 'auto' (the same as null/undefined)
 * @param {number} [opts.height] Use clientHeight of the input `dom` by default.
 *                               Can be 'auto' (the same as null/undefined)
 */
function init(dom, theme$$1, opts) {
    if (__DEV__) {
        // Check version
        if ((version$1.replace('.', '') - 0) < (dependencies.zrender.replace('.', '') - 0)) {
            throw new Error(
                'zrender/src ' + version$1
                + ' is too old for ECharts ' + version
                + '. Current version need ZRender '
                + dependencies.zrender + '+'
            );
        }

        if (!dom) {
            throw new Error('Initialize failed: invalid dom.');
        }
    }

    var existInstance = getInstanceByDom(dom);
    if (existInstance) {
        if (__DEV__) {
            console.warn('There is a chart instance already initialized on the dom.');
        }
        return existInstance;
    }

    if (__DEV__) {
        if (isDom(dom)
            && dom.nodeName.toUpperCase() !== 'CANVAS'
            && (
                (!dom.clientWidth && (!opts || opts.width == null))
                || (!dom.clientHeight && (!opts || opts.height == null))
            )
        ) {
            console.warn('Can\'t get dom width or height');
        }
    }

    var chart = new ECharts(dom, theme$$1, opts);
    chart.id = 'ec_' + idBase++;
    instances[chart.id] = chart;

    setAttribute(dom, DOM_ATTRIBUTE_KEY, chart.id);

    enableConnect(chart);

    return chart;
}

/**
 * @return {string|Array.<module:echarts~ECharts>} groupId
 */
function connect(groupId) {
    // Is array of charts
    if (isArray(groupId)) {
        var charts = groupId;
        groupId = null;
        // If any chart has group
        each(charts, function (chart) {
            if (chart.group != null) {
                groupId = chart.group;
            }
        });
        groupId = groupId || ('g_' + groupIdBase++);
        each(charts, function (chart) {
            chart.group = groupId;
        });
    }
    connectedGroups[groupId] = true;
    return groupId;
}

/**
 * @DEPRECATED
 * @return {string} groupId
 */
function disConnect(groupId) {
    connectedGroups[groupId] = false;
}

/**
 * @return {string} groupId
 */
var disconnect = disConnect;

/**
 * Dispose a chart instance
 * @param  {module:echarts~ECharts|HTMLDomElement|string} chart
 */
function dispose(chart) {
    if (typeof chart === 'string') {
        chart = instances[chart];
    }
    else if (!(chart instanceof ECharts)){
        // Try to treat as dom
        chart = getInstanceByDom(chart);
    }
    if ((chart instanceof ECharts) && !chart.isDisposed()) {
        chart.dispose();
    }
}

/**
 * @param  {HTMLElement} dom
 * @return {echarts~ECharts}
 */
function getInstanceByDom(dom) {
    return instances[getAttribute(dom, DOM_ATTRIBUTE_KEY)];
}

/**
 * @param {string} key
 * @return {echarts~ECharts}
 */
function getInstanceById(key) {
    return instances[key];
}

/**
 * Register theme
 */
function registerTheme(name, theme$$1) {
    themeStorage[name] = theme$$1;
}

/**
 * Register option preprocessor
 * @param {Function} preprocessorFunc
 */
function registerPreprocessor(preprocessorFunc) {
    optionPreprocessorFuncs.push(preprocessorFunc);
}

/**
 * @param {number} [priority=1000]
 * @param {Object|Function} processor
 */
function registerProcessor(priority, processor) {
    normalizeRegister(dataProcessorFuncs, priority, processor, PRIORITY_PROCESSOR_FILTER);
}

/**
 * Register postUpdater
 * @param {Function} postUpdateFunc
 */
function registerPostUpdate(postUpdateFunc) {
    postUpdateFuncs.push(postUpdateFunc);
}

/**
 * Usage:
 * registerAction('someAction', 'someEvent', function () { ... });
 * registerAction('someAction', function () { ... });
 * registerAction(
 *     {type: 'someAction', event: 'someEvent', update: 'updateView'},
 *     function () { ... }
 * );
 *
 * @param {(string|Object)} actionInfo
 * @param {string} actionInfo.type
 * @param {string} [actionInfo.event]
 * @param {string} [actionInfo.update]
 * @param {string} [eventName]
 * @param {Function} action
 */
function registerAction(actionInfo, eventName, action) {
    if (typeof eventName === 'function') {
        action = eventName;
        eventName = '';
    }
    var actionType = isObject(actionInfo)
        ? actionInfo.type
        : ([actionInfo, actionInfo = {
            event: eventName
        }][0]);

    // Event name is all lowercase
    actionInfo.event = (actionInfo.event || actionType).toLowerCase();
    eventName = actionInfo.event;

    // Validate action type and event name.
    assert(ACTION_REG.test(actionType) && ACTION_REG.test(eventName));

    if (!actions[actionType]) {
        actions[actionType] = {action: action, actionInfo: actionInfo};
    }
    eventActionMap[eventName] = actionType;
}

/**
 * @param {string} type
 * @param {*} CoordinateSystem
 */
function registerCoordinateSystem(type, CoordinateSystem$$1) {
    CoordinateSystemManager.register(type, CoordinateSystem$$1);
}

/**
 * Get dimensions of specified coordinate system.
 * @param {string} type
 * @return {Array.<string|Object>}
 */
function getCoordinateSystemDimensions(type) {
    var coordSysCreator = CoordinateSystemManager.get(type);
    if (coordSysCreator) {
        return coordSysCreator.getDimensionsInfo
                ? coordSysCreator.getDimensionsInfo()
                : coordSysCreator.dimensions.slice();
    }
}

/**
 * Layout is a special stage of visual encoding
 * Most visual encoding like color are common for different chart
 * But each chart has it's own layout algorithm
 *
 * @param {number} [priority=1000]
 * @param {Function} layoutTask
 */
function registerLayout(priority, layoutTask) {
    normalizeRegister(visualFuncs, priority, layoutTask, PRIORITY_VISUAL_LAYOUT, 'layout');
}

/**
 * @param {number} [priority=3000]
 * @param {module:echarts/stream/Task} visualTask
 */
function registerVisual(priority, visualTask) {
    normalizeRegister(visualFuncs, priority, visualTask, PRIORITY_VISUAL_CHART, 'visual');
}

/**
 * @param {Object|Function} fn: {seriesType, createOnAllSeries, performRawSeries, reset}
 */
function normalizeRegister(targetList, priority, fn, defaultPriority, visualType) {
    if (isFunction(priority) || isObject(priority)) {
        fn = priority;
        priority = defaultPriority;
    }

    if (__DEV__) {
        if (isNaN(priority) || priority == null) {
            throw new Error('Illegal priority');
        }
        // Check duplicate
        each(targetList, function (wrap) {
            assert(wrap.__raw !== fn);
        });
    }

    var stageHandler = Scheduler.wrapStageHandler(fn, visualType);

    stageHandler.__prio = priority;
    stageHandler.__raw = fn;
    targetList.push(stageHandler);

    return stageHandler;
}

/**
 * @param {string} name
 */
function registerLoading(name, loadingFx) {
    loadingEffects[name] = loadingFx;
}

/**
 * @param {Object} opts
 * @param {string} [superClass]
 */
function extendComponentModel(opts/*, superClass*/) {
    // var Clazz = ComponentModel;
    // if (superClass) {
    //     var classType = parseClassType(superClass);
    //     Clazz = ComponentModel.getClass(classType.main, classType.sub, true);
    // }
    return ComponentModel.extend(opts);
}

/**
 * @param {Object} opts
 * @param {string} [superClass]
 */
function extendComponentView(opts/*, superClass*/) {
    // var Clazz = ComponentView;
    // if (superClass) {
    //     var classType = parseClassType(superClass);
    //     Clazz = ComponentView.getClass(classType.main, classType.sub, true);
    // }
    return Component.extend(opts);
}

/**
 * @param {Object} opts
 * @param {string} [superClass]
 */
function extendSeriesModel(opts/*, superClass*/) {
    // var Clazz = SeriesModel;
    // if (superClass) {
    //     superClass = 'series.' + superClass.replace('series.', '');
    //     var classType = parseClassType(superClass);
    //     Clazz = ComponentModel.getClass(classType.main, classType.sub, true);
    // }
    return SeriesModel.extend(opts);
}

/**
 * @param {Object} opts
 * @param {string} [superClass]
 */
function extendChartView(opts/*, superClass*/) {
    // var Clazz = ChartView;
    // if (superClass) {
    //     superClass = superClass.replace('series.', '');
    //     var classType = parseClassType(superClass);
    //     Clazz = ChartView.getClass(classType.main, true);
    // }
    return Chart.extend(opts);
}

/**
 * ZRender need a canvas context to do measureText.
 * But in node environment canvas may be created by node-canvas.
 * So we need to specify how to create a canvas instead of using document.createElement('canvas')
 *
 * Be careful of using it in the browser.
 *
 * @param {Function} creator
 * @example
 *     var Canvas = require('canvas');
 *     var echarts = require('echarts');
 *     echarts.setCanvasCreator(function () {
 *         // Small size is enough.
 *         return new Canvas(32, 32);
 *     });
 */
function setCanvasCreator(creator) {
    $override('createCanvas', creator);
}

/**
 * @param {string} mapName
 * @param {Object|string} geoJson
 * @param {Object} [specialAreas]
 *
 * @example
 *     $.get('USA.json', function (geoJson) {
 *         echarts.registerMap('USA', geoJson);
 *         // Or
 *         echarts.registerMap('USA', {
 *             geoJson: geoJson,
 *             specialAreas: {}
 *         })
 *     });
 */
function registerMap(mapName, geoJson, specialAreas) {
    if (geoJson.geoJson && !geoJson.features) {
        specialAreas = geoJson.specialAreas;
        geoJson = geoJson.geoJson;
    }
    if (typeof geoJson === 'string') {
        geoJson = (typeof JSON !== 'undefined' && JSON.parse)
            ? JSON.parse(geoJson) : (new Function('return (' + geoJson + ');'))();
    }
    mapDataStores[mapName] = {
        geoJson: geoJson,
        specialAreas: specialAreas
    };
}

/**
 * @param {string} mapName
 * @return {Object}
 */
function getMap(mapName) {
    return mapDataStores[mapName];
}

registerVisual(PRIORITY_VISUAL_GLOBAL, seriesColor);
registerPreprocessor(backwardCompat);
registerProcessor(PRIORITY_PROCESSOR_STATISTIC, dataStack);
registerLoading('default', loadingDefault);

// Default actions

registerAction({
    type: 'highlight',
    event: 'highlight',
    update: 'highlight'
}, noop);

registerAction({
    type: 'downplay',
    event: 'downplay',
    update: 'downplay'
}, noop);

// Default theme
registerTheme('light', lightTheme);
registerTheme('dark', theme);

// For backward compatibility, where the namespace `dataTool` will
// be mounted on `echarts` is the extension `dataTool` is imported.
var dataTool = {};

var DatasetModel = extendComponentModel({

    type: 'dataset',

    /**
     * @protected
     */
    defaultOption: {

        // 'row', 'column'
        seriesLayoutBy: SERIES_LAYOUT_BY_COLUMN,

        // null/'auto': auto detect header, see "module:echarts/data/helper/sourceHelper"
        sourceHeader: null,

        dimensions: null,

        source: null
    },

    optionUpdated: function () {
        detectSourceFormat(this);
    }

});

extendComponentView({type: 'dataset'});

function defaultKeyGetter(item) {
    return item;
}

/**
 * @param {Array} oldArr
 * @param {Array} newArr
 * @param {Function} oldKeyGetter
 * @param {Function} newKeyGetter
 * @param {Object} [context] Can be visited by this.context in callback.
 */
function DataDiffer(oldArr, newArr, oldKeyGetter, newKeyGetter, context) {
    this._old = oldArr;
    this._new = newArr;

    this._oldKeyGetter = oldKeyGetter || defaultKeyGetter;
    this._newKeyGetter = newKeyGetter || defaultKeyGetter;

    this.context = context;
}

DataDiffer.prototype = {

    constructor: DataDiffer,

    /**
     * Callback function when add a data
     */
    add: function (func) {
        this._add = func;
        return this;
    },

    /**
     * Callback function when update a data
     */
    update: function (func) {
        this._update = func;
        return this;
    },

    /**
     * Callback function when remove a data
     */
    remove: function (func) {
        this._remove = func;
        return this;
    },

    execute: function () {
        var oldArr = this._old;
        var newArr = this._new;

        var oldDataIndexMap = {};
        var newDataIndexMap = {};
        var oldDataKeyArr = [];
        var newDataKeyArr = [];
        var i;

        initIndexMap(oldArr, oldDataIndexMap, oldDataKeyArr, '_oldKeyGetter', this);
        initIndexMap(newArr, newDataIndexMap, newDataKeyArr, '_newKeyGetter', this);

        // Travel by inverted order to make sure order consistency
        // when duplicate keys exists (consider newDataIndex.pop() below).
        // For performance consideration, these code below do not look neat.
        for (i = 0; i < oldArr.length; i++) {
            var key = oldDataKeyArr[i];
            var idx = newDataIndexMap[key];

            // idx can never be empty array here. see 'set null' logic below.
            if (idx != null) {
                // Consider there is duplicate key (for example, use dataItem.name as key).
                // We should make sure every item in newArr and oldArr can be visited.
                var len = idx.length;
                if (len) {
                    len === 1 && (newDataIndexMap[key] = null);
                    idx = idx.unshift();
                }
                else {
                    newDataIndexMap[key] = null;
                }
                this._update && this._update(idx, i);
            }
            else {
                this._remove && this._remove(i);
            }
        }

        for (var i = 0; i < newDataKeyArr.length; i++) {
            var key = newDataKeyArr[i];
            if (newDataIndexMap.hasOwnProperty(key)) {
                var idx = newDataIndexMap[key];
                if (idx == null) {
                    continue;
                }
                // idx can never be empty array here. see 'set null' logic above.
                if (!idx.length) {
                    this._add && this._add(idx);
                }
                else {
                    for (var j = 0, len = idx.length; j < len; j++) {
                        this._add && this._add(idx[j]);
                    }
                }
            }
        }
    }
};

function initIndexMap(arr, map, keyArr, keyGetterName, dataDiffer) {
    for (var i = 0; i < arr.length; i++) {
        // Add prefix to avoid conflict with Object.prototype.
        var key = '_ec_' + dataDiffer[keyGetterName](arr[i], i);
        var existence = map[key];
        if (existence == null) {
            keyArr.push(key);
            map[key] = i;
        }
        else {
            if (!existence.length) {
                map[key] = existence = [existence];
            }
            existence.push(i);
        }
    }
}

var OTHER_DIMENSIONS = createHashMap([
    'tooltip', 'label', 'itemName', 'itemId', 'seriesName'
]);

function summarizeDimensions(data) {
    var summary = {};
    var encode = summary.encode = {};
    var notExtraCoordDimMap = createHashMap();
    var defaultedLabel = [];

    each$1(data.dimensions, function (dimName) {
        var dimItem = data.getDimensionInfo(dimName);

        var coordDim = dimItem.coordDim;
        if (coordDim) {
            if (__DEV__) {
                assert$1(OTHER_DIMENSIONS.get(coordDim) == null);
            }
            var coordDimArr = encode[coordDim];
            if (!encode.hasOwnProperty(coordDim)) {
                coordDimArr = encode[coordDim] = [];
            }
            coordDimArr[dimItem.coordDimIndex] = dimName;

            if (!dimItem.isExtraCoord) {
                notExtraCoordDimMap.set(coordDim, 1);

                // Use the last coord dim (and label friendly) as default label,
                // because when dataset is used, it is hard to guess which dimension
                // can be value dimension. If both show x, y on label is not look good,
                // and conventionally y axis is focused more.
                if (mayLabelDimType(dimItem.type)) {
                    defaultedLabel[0] = dimName;
                }
            }
        }

        OTHER_DIMENSIONS.each(function (v, otherDim) {
            var otherDimArr = encode[otherDim];
            if (!encode.hasOwnProperty(otherDim)) {
                otherDimArr = encode[otherDim] = [];
            }

            var dimIndex = dimItem.otherDims[otherDim];
            if (dimIndex != null && dimIndex !== false) {
                otherDimArr[dimIndex] = dimItem.name;
            }
        });
    });

    var dataDimsOnCoord = [];
    var encodeFirstDimNotExtra = {};

    notExtraCoordDimMap.each(function (v, coordDim) {
        var dimArr = encode[coordDim];
        // ??? FIXME extra coord should not be set in dataDimsOnCoord.
        // But should fix the case that radar axes: simplify the logic
        // of `completeDimension`, remove `extraPrefix`.
        encodeFirstDimNotExtra[coordDim] = dimArr[0];
        // Not necessary to remove duplicate, because a data
        // dim canot on more than one coordDim.
        dataDimsOnCoord = dataDimsOnCoord.concat(dimArr);
    });

    summary.dataDimsOnCoord = dataDimsOnCoord;
    summary.encodeFirstDimNotExtra = encodeFirstDimNotExtra;

    var encodeLabel = encode.label;
    // FIXME `encode.label` is not recommanded, because formatter can not be set
    // in this way. Use label.formatter instead. May be remove this approach someday.
    if (encodeLabel && encodeLabel.length) {
        defaultedLabel = encodeLabel.slice();
    }

    var defaultedTooltip = defaultedLabel.slice();
    var encodeTooltip = encode.tooltip;
    if (encodeTooltip && encodeTooltip.length) {
        defaultedTooltip = encodeTooltip.slice();
    }

    encode.defaultedLabel = defaultedLabel;
    encode.defaultedTooltip = defaultedTooltip;

    return summary;
}

function getDimensionTypeByAxis(axisType) {
    return axisType === 'category'
        ? 'ordinal'
        : axisType === 'time'
        ? 'time'
        : 'float';
}

function mayLabelDimType(dimType) {
    // In most cases, ordinal and time do not suitable for label.
    // Ordinal info can be displayed on axis. Time is too long.
    return !(dimType === 'ordinal' || dimType === 'time');
}

// function findTheLastDimMayLabel(data) {
//     // Get last value dim
//     var dimensions = data.dimensions.slice();
//     var valueType;
//     var valueDim;
//     while (dimensions.length && (
//         valueDim = dimensions.pop(),
//         valueType = data.getDimensionInfo(valueDim).type,
//         valueType === 'ordinal' || valueType === 'time'
//     )) {} // jshint ignore:line
//     return valueDim;
// }

/**
 * List for data storage
 * @module echarts/data/List
 */

var isObject$4 = isObject$1;

var UNDEFINED = 'undefined';
var globalObj = typeof window === UNDEFINED ? global : window;

// Use prefix to avoid index to be the same as otherIdList[idx],
// which will cause weird udpate animation.
var ID_PREFIX = 'e\0\0';

var dataCtors = {
    'float': typeof globalObj.Float64Array === UNDEFINED
        ? Array : globalObj.Float64Array,
    'int': typeof globalObj.Int32Array === UNDEFINED
        ? Array : globalObj.Int32Array,
    // Ordinal data type can be string or int
    'ordinal': Array,
    'number': Array,
    'time': Array
};

var CtorUint32Array = typeof globalObj.Uint32Array === UNDEFINED ? Array : globalObj.Uint32Array;
var CtorUint16Array = typeof globalObj.Uint16Array === UNDEFINED ? Array : globalObj.Uint16Array;

function getIndicesCtor(list) {
    // The possible max value in this._indicies is always this._rawCount despite of filtering.
    return list._rawCount > 65535 ? CtorUint32Array : CtorUint16Array;
}

function cloneChunk(originalChunk) {
    var Ctor = originalChunk.constructor;
    // Only shallow clone is enough when Array.
    return Ctor === Array ? originalChunk.slice() : new Ctor(originalChunk);
}

var TRANSFERABLE_PROPERTIES = [
    'hasItemOption', '_nameList', '_idList', '_calculationInfo', '_invertedIndicesMap',
    '_rawData', '_rawExtent', '_chunkSize', '_chunkCount',
    '_dimValueGetter', '_count', '_rawCount', '_nameDimIdx', '_idDimIdx'
];

function transferProperties(a, b) {
    each$1(TRANSFERABLE_PROPERTIES.concat(b.__wrappedMethods || []), function (propName) {
        if (b.hasOwnProperty(propName)) {
            a[propName] = b[propName];
        }
    });

    a.__wrappedMethods = b.__wrappedMethods;
}






/**
 * @constructor
 * @alias module:echarts/data/List
 *
 * @param {Array.<string|Object>} dimensions
 *      For example, ['someDimName', {name: 'someDimName', type: 'someDimType'}, ...].
 *      Dimensions should be concrete names like x, y, z, lng, lat, angle, radius
 *      Spetial fields: {
 *          ordinalMeta: <module:echarts/data/OrdinalMeta>
 *          createInvertedIndices: <boolean>
 *      }
 * @param {module:echarts/model/Model} hostModel
 */
var List = function (dimensions, hostModel) {

    dimensions = dimensions || ['x', 'y'];

    var dimensionInfos = {};
    var dimensionNames = [];
    var invertedIndicesMap = {};

    for (var i = 0; i < dimensions.length; i++) {
        // Use the original dimensions[i], where other flag props may exists.
        var dimensionInfo = dimensions[i];

        if (isString(dimensionInfo)) {
            dimensionInfo = {name: dimensionInfo};
        }

        var dimensionName = dimensionInfo.name;
        dimensionInfo.type = dimensionInfo.type || 'float';
        if (!dimensionInfo.coordDim) {
            dimensionInfo.coordDim = dimensionName;
            dimensionInfo.coordDimIndex = 0;
        }

        dimensionInfo.otherDims = dimensionInfo.otherDims || {};
        dimensionNames.push(dimensionName);
        dimensionInfos[dimensionName] = dimensionInfo;

        dimensionInfo.index = i;

        if (dimensionInfo.createInvertedIndices) {
            invertedIndicesMap[dimensionName] = [];
        }
    }

    /**
     * @readOnly
     * @type {Array.<string>}
     */
    this.dimensions = dimensionNames;

    /**
     * Infomation of each data dimension, like data type.
     * @type {Object}
     */
    this._dimensionInfos = dimensionInfos;

    /**
     * @type {module:echarts/model/Model}
     */
    this.hostModel = hostModel;

    /**
     * @type {module:echarts/model/Model}
     */
    this.dataType;

    /**
     * Indices stores the indices of data subset after filtered.
     * This data subset will be used in chart.
     * @type {Array.<number>}
     * @readOnly
     */
    this._indices = null;

    this._count = 0;
    this._rawCount = 0;

    /**
     * Data storage
     * @type {Object.<key, Array.<TypedArray|Array>>}
     * @private
     */
    this._storage = {};

    /**
     * @type {Array.<string>}
     */
    this._nameList = [];
    /**
     * @type {Array.<string>}
     */
    this._idList = [];

    /**
     * Models of data option is stored sparse for optimizing memory cost
     * @type {Array.<module:echarts/model/Model>}
     * @private
     */
    this._optionModels = [];

    /**
     * Global visual properties after visual coding
     * @type {Object}
     * @private
     */
    this._visual = {};

    /**
     * Globel layout properties.
     * @type {Object}
     * @private
     */
    this._layout = {};

    /**
     * Item visual properties after visual coding
     * @type {Array.<Object>}
     * @private
     */
    this._itemVisuals = [];

    /**
     * Key: visual type, Value: boolean
     * @type {Object}
     * @readOnly
     */
    this.hasItemVisual = {};

    /**
     * Item layout properties after layout
     * @type {Array.<Object>}
     * @private
     */
    this._itemLayouts = [];

    /**
     * Graphic elemnents
     * @type {Array.<module:zrender/Element>}
     * @private
     */
    this._graphicEls = [];

    /**
     * Max size of each chunk.
     * @type {number}
     * @private
     */
    this._chunkSize = 1e5;

    /**
     * @type {number}
     * @private
     */
    this._chunkCount = 0;

    /**
     * @type {Array.<Array|Object>}
     * @private
     */
    this._rawData;

    /**
     * Raw extent will not be cloned, but only transfered.
     * It will not be calculated util needed.
     * key: dim,
     * value: {end: number, extent: Array.<number>}
     * @type {Object}
     * @private
     */
    this._rawExtent = {};

    /**
     * @type {Object}
     * @private
     */
    this._extent = {};

    /**
     * key: dim
     * value: extent
     * @type {Object}
     * @private
     */
    this._approximateExtent = {};

    /**
     * Cache summary info for fast visit. See "dimensionHelper".
     * @type {Object}
     * @private
     */
    this._dimensionsSummary = summarizeDimensions(this);

    /**
     * @type {Object.<Array|TypedArray>}
     * @private
     */
    this._invertedIndicesMap = invertedIndicesMap;

    /**
     * @type {Object}
     * @private
     */
    this._calculationInfo = {};
};

var listProto = List.prototype;

listProto.type = 'list';

/**
 * If each data item has it's own option
 * @type {boolean}
 */
listProto.hasItemOption = true;

/**
 * Get dimension name
 * @param {string|number} dim
 *        Dimension can be concrete names like x, y, z, lng, lat, angle, radius
 *        Or a ordinal number. For example getDimensionInfo(0) will return 'x' or 'lng' or 'radius'
 * @return {string} Concrete dim name.
 */
listProto.getDimension = function (dim) {
    if (!isNaN(dim)) {
        dim = this.dimensions[dim] || dim;
    }
    return dim;
};

/**
 * Get type and calculation info of particular dimension
 * @param {string|number} dim
 *        Dimension can be concrete names like x, y, z, lng, lat, angle, radius
 *        Or a ordinal number. For example getDimensionInfo(0) will return 'x' or 'lng' or 'radius'
 */
listProto.getDimensionInfo = function (dim) {
    // Do not clone, because there may be categories in dimInfo.
    return this._dimensionInfos[this.getDimension(dim)];
};

/**
 * @return {Array.<string>} concrete dimension name list on coord.
 */
listProto.getDimensionsOnCoord = function () {
    return this._dimensionsSummary.dataDimsOnCoord.slice();
};

/**
 * @param {string} coordDim
 * @param {number} [idx] A coordDim may map to more than one data dim.
 *        If idx is `true`, return a array of all mapped dims.
 *        If idx is not specified, return the first dim not extra.
 * @return {string|Array.<string>} concrete data dim.
 *        If idx is number, and not found, return null/undefined.
 *        If idx is `true`, and not found, return empty array (always return array).
 */
listProto.mapDimension = function (coordDim, idx) {
    var dimensionsSummary = this._dimensionsSummary;

    if (idx == null) {
        return dimensionsSummary.encodeFirstDimNotExtra[coordDim];
    }

    var dims = dimensionsSummary.encode[coordDim];
    return idx === true
        // always return array if idx is `true`
        ? (dims || []).slice()
        : (dims && dims[idx]);
};

/**
 * Initialize from data
 * @param {Array.<Object|number|Array>} data source or data or data provider.
 * @param {Array.<string>} [nameLIst] The name of a datum is used on data diff and
 *        defualt label/tooltip.
 *        A name can be specified in encode.itemName,
 *        or dataItem.name (only for series option data),
 *        or provided in nameList from outside.
 * @param {Function} [dimValueGetter] (dataItem, dimName, dataIndex, dimIndex) => number
 */
listProto.initData = function (data, nameList, dimValueGetter) {

    var notProvider = Source.isInstance(data) || isArrayLike(data);
    if (notProvider) {
        data = new DefaultDataProvider(data, this.dimensions.length);
    }

    if (__DEV__) {
        if (!notProvider && (typeof data.getItem != 'function' || typeof data.count != 'function')) {
            throw new Error('Inavlid data provider.');
        }
    }

    this._rawData = data;

    // Clear
    this._storage = {};
    this._indices = null;

    this._nameList = nameList || [];

    this._idList = [];

    this._nameRepeatCount = {};

    if (!dimValueGetter) {
        this.hasItemOption = false;
    }

    /**
     * @readOnly
     */
    this.defaultDimValueGetter = defaultDimValueGetters[
        this._rawData.getSource().sourceFormat
    ];

    // Default dim value getter
    this._dimValueGetter = dimValueGetter = dimValueGetter
        || this.defaultDimValueGetter;

    // Reset raw extent.
    this._rawExtent = {};

    this._initDataFromProvider(0, data.count());

    // If data has no item option.
    if (data.pure) {
        this.hasItemOption = false;
    }
};

listProto.getProvider = function () {
    return this._rawData;
};

listProto.appendData = function (data) {
    if (__DEV__) {
        assert$1(!this._indices, 'appendData can only be called on raw data.');
    }

    var rawData = this._rawData;
    var start = this.count();
    rawData.appendData(data);
    var end = rawData.count();
    if (!rawData.persistent) {
        end += start;
    }
    this._initDataFromProvider(start, end);
};

listProto._initDataFromProvider = function (start, end) {
    // Optimize.
    if (start >= end) {
        return;
    }

    var chunkSize = this._chunkSize;
    var rawData = this._rawData;
    var storage = this._storage;
    var dimensions = this.dimensions;
    var dimensionInfoMap = this._dimensionInfos;
    var nameList = this._nameList;
    var idList = this._idList;
    var rawExtent = this._rawExtent;
    var nameRepeatCount = this._nameRepeatCount = {};
    var nameDimIdx;

    var chunkCount = this._chunkCount;
    var lastChunkIndex = chunkCount - 1;
    for (var i = 0; i < dimensions.length; i++) {
        var dim = dimensions[i];
        if (!rawExtent[dim]) {
            rawExtent[dim] = getInitialExtent();
        }

        var dimInfo = dimensionInfoMap[dim];
        if (dimInfo.otherDims.itemName === 0) {
            nameDimIdx = this._nameDimIdx = i;
        }
        if (dimInfo.otherDims.itemId === 0) {
            this._idDimIdx = i;
        }
        var DataCtor = dataCtors[dimInfo.type];

        if (!storage[dim]) {
            storage[dim] = [];
        }
        var resizeChunkArray = storage[dim][lastChunkIndex];
        if (resizeChunkArray && resizeChunkArray.length < chunkSize) {
            var newStore = new DataCtor(Math.min(end - lastChunkIndex * chunkSize, chunkSize));
            // The cost of the copy is probably inconsiderable
            // within the initial chunkSize.
            for (var j = 0; j < resizeChunkArray.length; j++) {
                newStore[j] = resizeChunkArray[j];
            }
            storage[dim][lastChunkIndex] = newStore;
        }

        // Create new chunks.
        for (var k = chunkCount * chunkSize; k < end; k += chunkSize) {
            storage[dim].push(new DataCtor(Math.min(end - k, chunkSize)));
        }
        this._chunkCount = storage[dim].length;
    }

    for (var idx = start; idx < end; idx++) {
        // NOTICE: Try not to write things into dataItem
        var dataItem = rawData.getItem(idx);
        // Each data item is value
        // [1, 2]
        // 2
        // Bar chart, line chart which uses category axis
        // only gives the 'y' value. 'x' value is the indices of category
        // Use a tempValue to normalize the value to be a (x, y) value
        var chunkIndex = Math.floor(idx / chunkSize);
        var chunkOffset = idx % chunkSize;

        // Store the data by dimensions
        for (var k = 0; k < dimensions.length; k++) {
            var dim = dimensions[k];
            var dimStorage = storage[dim][chunkIndex];
            // PENDING NULL is empty or zero
            var val = this._dimValueGetter(dataItem, dim, idx, k);
            dimStorage[chunkOffset] = val;

            if (val < rawExtent[dim][0]) {
                rawExtent[dim][0] = val;
            }
            if (val > rawExtent[dim][1]) {
                rawExtent[dim][1] = val;
            }
        }

        // ??? FIXME not check by pure but sourceFormat?
        // TODO refactor these logic.
        if (!rawData.pure) {
            var name = nameList[idx];

            if (dataItem && !name) {
                if (nameDimIdx != null) {
                    name = this._getNameFromStore(idx);
                }
                else if (dataItem.name != null) {
                    // There is no other place to persistent dataItem.name,
                    // so save it to nameList.
                    nameList[idx] = name = dataItem.name;
                }
            }

            // Try using the id in option
            // id or name is used on dynamical data, mapping old and new items.
            var id = dataItem == null ? null : dataItem.id;

            if (id == null && name != null) {
                // Use name as id and add counter to avoid same name
                nameRepeatCount[name] = nameRepeatCount[name] || 0;
                id = name;
                if (nameRepeatCount[name] > 0) {
                    id += '__ec__' + nameRepeatCount[name];
                }
                nameRepeatCount[name]++;
            }
            id != null && (idList[idx] = id);
        }
    }

    if (!rawData.persistent && rawData.clean) {
        // Clean unused data if data source is typed array.
        rawData.clean();
    }

    this._rawCount = this._count = end;

    // Reset data extent
    this._extent = {};

    prepareInvertedIndex(this);
};

function prepareInvertedIndex(list) {
    var invertedIndicesMap = list._invertedIndicesMap;
    each$1(invertedIndicesMap, function (invertedIndices, dim) {
        var dimInfo = list._dimensionInfos[dim];

        // Currently, only dimensions that has ordinalMeta can create inverted indices.
        var ordinalMeta = dimInfo.ordinalMeta;
        if (ordinalMeta) {
            invertedIndices = invertedIndicesMap[dim] = new CtorUint32Array(
                ordinalMeta.categories.length
            );
            // The default value of TypedArray is 0. To avoid miss
            // mapping to 0, we should set it as NaN.
            for (var i = 0; i < invertedIndices.length; i++) {
                invertedIndices[i] = NaN;
            }
            for (var i = 0; i < list._count; i++) {
                // Only support the case that all values are distinct.
                invertedIndices[list.get(dim, i)] = i;
            }
        }
    });
}

// TODO refactor
listProto._getNameFromStore = function (rawIndex) {
    var nameDimIdx = this._nameDimIdx;
    if (nameDimIdx != null) {
        var chunkSize = this._chunkSize;
        var chunkIndex = Math.floor(rawIndex / chunkSize);
        var chunkOffset = rawIndex % chunkSize;
        var dim = this.dimensions[nameDimIdx];
        var ordinalMeta = this._dimensionInfos[dim].ordinalMeta;
        if (ordinalMeta) {
            return ordinalMeta.categories[rawIndex];
        }
        else {
            var chunk = this._storage[dim][chunkIndex];
            return chunk && chunk[chunkOffset];
        }
    }
};

// TODO refactor
listProto._getIdFromStore = function (rawIndex) {
    var idDimIdx = this._idDimIdx;
    if (idDimIdx != null) {
        var chunkSize = this._chunkSize;
        var chunkIndex = Math.floor(rawIndex / chunkSize);
        var chunkOffset = rawIndex % chunkSize;
        var dim = this.dimensions[idDimIdx];
        var ordinalMeta = this._dimensionInfos[dim].ordinalMeta;
        if (ordinalMeta) {
            return ordinalMeta.categories[rawIndex];
        }
        else {
            var chunk = this._storage[dim][chunkIndex];
            return chunk && chunk[chunkOffset];
        }
    }
};

/**
 * @return {number}
 */
listProto.count = function () {
    return this._count;
};

listProto.getIndices = function () {
    if (this._indices) {
        var Ctor = this._indices.constructor;
        return new Ctor(this._indices.buffer, 0, this._count);
    }

    var Ctor = getIndicesCtor(this);
    var arr = new Ctor(this.count());
    for (var i = 0; i < arr.length; i++) {
        arr[i] = i;
    }
    return arr;
};

/**
 * Get value. Return NaN if idx is out of range.
 * @param {string} dim Dim must be concrete name.
 * @param {number} idx
 * @param {boolean} stack
 * @return {number}
 */
listProto.get = function (dim, idx /*, stack */) {
    if (!(idx >= 0 && idx < this._count)) {
        return NaN;
    }
    var storage = this._storage;
    if (!storage[dim]) {
        // TODO Warn ?
        return NaN;
    }

    idx = this.getRawIndex(idx);

    var chunkIndex = Math.floor(idx / this._chunkSize);
    var chunkOffset = idx % this._chunkSize;

    var chunkStore = storage[dim][chunkIndex];
    var value = chunkStore[chunkOffset];
    // FIXME ordinal data type is not stackable
    // if (stack) {
    //     var dimensionInfo = this._dimensionInfos[dim];
    //     if (dimensionInfo && dimensionInfo.stackable) {
    //         var stackedOn = this.stackedOn;
    //         while (stackedOn) {
    //             // Get no stacked data of stacked on
    //             var stackedValue = stackedOn.get(dim, idx);
    //             // Considering positive stack, negative stack and empty data
    //             if ((value >= 0 && stackedValue > 0)  // Positive stack
    //                 || (value <= 0 && stackedValue < 0) // Negative stack
    //             ) {
    //                 value += stackedValue;
    //             }
    //             stackedOn = stackedOn.stackedOn;
    //         }
    //     }
    // }

    return value;
};

/**
 * @param {string} dim concrete dim
 * @param {number} rawIndex
 * @return {number|string}
 */
listProto.getByRawIndex = function (dim, rawIdx) {
    if (!(rawIdx >= 0 && rawIdx < this._rawCount)) {
        return NaN;
    }
    var dimStore = this._storage[dim];
    if (!dimStore) {
        // TODO Warn ?
        return NaN;
    }

    var chunkIndex = Math.floor(rawIdx / this._chunkSize);
    var chunkOffset = rawIdx % this._chunkSize;
    var chunkStore = dimStore[chunkIndex];
    return chunkStore[chunkOffset];
};

/**
 * FIXME Use `get` on chrome maybe slow(in filterSelf and selectRange).
 * Hack a much simpler _getFast
 * @private
 */
listProto._getFast = function (dim, rawIdx) {
    var chunkIndex = Math.floor(rawIdx / this._chunkSize);
    var chunkOffset = rawIdx % this._chunkSize;
    var chunkStore = this._storage[dim][chunkIndex];
    return chunkStore[chunkOffset];
};

/**
 * Get value for multi dimensions.
 * @param {Array.<string>} [dimensions] If ignored, using all dimensions.
 * @param {number} idx
 * @return {number}
 */
listProto.getValues = function (dimensions, idx /*, stack */) {
    var values = [];

    if (!isArray(dimensions)) {
        // stack = idx;
        idx = dimensions;
        dimensions = this.dimensions;
    }

    for (var i = 0, len = dimensions.length; i < len; i++) {
        values.push(this.get(dimensions[i], idx /*, stack */));
    }

    return values;
};

/**
 * If value is NaN. Inlcuding '-'
 * Only check the coord dimensions.
 * @param {string} dim
 * @param {number} idx
 * @return {number}
 */
listProto.hasValue = function (idx) {
    var dataDimsOnCoord = this._dimensionsSummary.dataDimsOnCoord;
    var dimensionInfos = this._dimensionInfos;
    for (var i = 0, len = dataDimsOnCoord.length; i < len; i++) {
        if (
            // Ordinal type can be string or number
            dimensionInfos[dataDimsOnCoord[i]].type !== 'ordinal'
            // FIXME check ordinal when using index?
            && isNaN(this.get(dataDimsOnCoord[i], idx))
        ) {
            return false;
        }
    }
    return true;
};

/**
 * Get extent of data in one dimension
 * @param {string} dim
 * @param {boolean} stack
 */
listProto.getDataExtent = function (dim /*, stack */) {
    // Make sure use concrete dim as cache name.
    dim = this.getDimension(dim);
    var dimData = this._storage[dim];
    var initialExtent = getInitialExtent();

    // stack = !!((stack || false) && this.getCalculationInfo(dim));

    if (!dimData) {
        return initialExtent;
    }

    // Make more strict checkings to ensure hitting cache.
    var currEnd = this.count();
    // var cacheName = [dim, !!stack].join('_');
    // var cacheName = dim;

    // Consider the most cases when using data zoom, `getDataExtent`
    // happened before filtering. We cache raw extent, which is not
    // necessary to be cleared and recalculated when restore data.
    var useRaw = !this._indices; // && !stack;
    var dimExtent;

    if (useRaw) {
        return this._rawExtent[dim].slice();
    }
    dimExtent = this._extent[dim];
    if (dimExtent) {
        return dimExtent.slice();
    }
    dimExtent = initialExtent;

    var min = dimExtent[0];
    var max = dimExtent[1];

    for (var i = 0; i < currEnd; i++) {
        // var value = stack ? this.get(dim, i, true) : this._getFast(dim, this.getRawIndex(i));
        var value = this._getFast(dim, this.getRawIndex(i));
        value < min && (min = value);
        value > max && (max = value);
    }

    dimExtent = [min, max];

    this._extent[dim] = dimExtent;

    return dimExtent;
};

/**
 * Optimize for the scenario that data is filtered by a given extent.
 * Consider that if data amount is more than hundreds of thousand,
 * extent calculation will cost more than 10ms and the cache will
 * be erased because of the filtering.
 */
listProto.getApproximateExtent = function (dim /*, stack */) {
    dim = this.getDimension(dim);
    return this._approximateExtent[dim] || this.getDataExtent(dim /*, stack */);
};

listProto.setApproximateExtent = function (extent, dim /*, stack */) {
    dim = this.getDimension(dim);
    this._approximateExtent[dim] = extent.slice();
};

/**
 * @param {string} key
 * @return {*}
 */
listProto.getCalculationInfo = function (key) {
    return this._calculationInfo[key];
};

/**
 * @param {string|Object} key or k-v object
 * @param {*} [value]
 */
listProto.setCalculationInfo = function (key, value) {
    isObject$4(key)
        ? extend(this._calculationInfo, key)
        : (this._calculationInfo[key] = value);
};

/**
 * Get sum of data in one dimension
 * @param {string} dim
 */
listProto.getSum = function (dim /*, stack */) {
    var dimData = this._storage[dim];
    var sum = 0;
    if (dimData) {
        for (var i = 0, len = this.count(); i < len; i++) {
            var value = this.get(dim, i /*, stack */);
            if (!isNaN(value)) {
                sum += value;
            }
        }
    }
    return sum;
};

// /**
//  * Retreive the index with given value
//  * @param {string} dim Concrete dimension.
//  * @param {number} value
//  * @return {number}
//  */
// Currently incorrect: should return dataIndex but not rawIndex.
// Do not fix it until this method is to be used somewhere.
// FIXME Precision of float value
// listProto.indexOf = function (dim, value) {
//     var storage = this._storage;
//     var dimData = storage[dim];
//     var chunkSize = this._chunkSize;
//     if (dimData) {
//         for (var i = 0, len = this.count(); i < len; i++) {
//             var chunkIndex = Math.floor(i / chunkSize);
//             var chunkOffset = i % chunkSize;
//             if (dimData[chunkIndex][chunkOffset] === value) {
//                 return i;
//             }
//         }
//     }
//     return -1;
// };

/**
 * Only support the dimension which inverted index created.
 * Do not support other cases until required.
 * @param {string} concrete dim
 * @param {number|string} value
 * @return {number} rawIndex
 */
listProto.rawIndexOf = function (dim, value) {
    var invertedIndices = dim && this._invertedIndicesMap[dim];
    if (__DEV__) {
        if (!invertedIndices) {
            throw new Error('Do not supported yet');
        }
    }
    var rawIndex = invertedIndices[value];
    if (rawIndex == null || isNaN(rawIndex)) {
        return -1;
    }
    return rawIndex;
};

/**
 * Retreive the index with given name
 * @param {number} idx
 * @param {number} name
 * @return {number}
 */
listProto.indexOfName = function (name) {
    for (var i = 0, len = this.count(); i < len; i++) {
        if (this.getName(i) === name) {
            return i;
        }
    }

    return -1;
};

/**
 * Retreive the index with given raw data index
 * @param {number} idx
 * @param {number} name
 * @return {number}
 */
listProto.indexOfRawIndex = function (rawIndex) {
    if (!this._indices) {
        return rawIndex;
    }

    if (rawIndex >= this._rawCount || rawIndex < 0) {
        return -1;
    }

    // Indices are ascending
    var indices = this._indices;

    // If rawIndex === dataIndex
    var rawDataIndex = indices[rawIndex];
    if (rawDataIndex != null && rawDataIndex < this._count && rawDataIndex === rawIndex) {
        return rawIndex;
    }

    var left = 0;
    var right = this._count - 1;
    while (left <= right) {
        var mid = (left + right) / 2 | 0;
        if (indices[mid] < rawIndex) {
            left = mid + 1;
        }
        else if (indices[mid] > rawIndex) {
            right = mid - 1;
        }
        else {
            return mid;
        }
    }
    return -1;
};

/**
 * Retreive the index of nearest value
 * @param {string} dim
 * @param {number} value
 * @param {number} [maxDistance=Infinity]
 * @return {Array.<number>} Considere multiple points has the same value.
 */
listProto.indicesOfNearest = function (dim, value, maxDistance) {
    var storage = this._storage;
    var dimData = storage[dim];
    var nearestIndices = [];

    if (!dimData) {
        return nearestIndices;
    }

    if (maxDistance == null) {
        maxDistance = Infinity;
    }

    var minDist = Number.MAX_VALUE;
    var minDiff = -1;
    for (var i = 0, len = this.count(); i < len; i++) {
        var diff = value - this.get(dim, i /*, stack */);
        var dist = Math.abs(diff);
        if (diff <= maxDistance && dist <= minDist) {
            // For the case of two data are same on xAxis, which has sequence data.
            // Show the nearest index
            // https://github.com/ecomfe/echarts/issues/2869
            if (dist < minDist || (diff >= 0 && minDiff < 0)) {
                minDist = dist;
                minDiff = diff;
                nearestIndices.length = 0;
            }
            nearestIndices.push(i);
        }
    }
    return nearestIndices;
};

/**
 * Get raw data index
 * @param {number} idx
 * @return {number}
 */
listProto.getRawIndex = getRawIndexWithoutIndices;

function getRawIndexWithoutIndices(idx) {
    return idx;
}

function getRawIndexWithIndices(idx) {
    if (idx < this._count && idx >= 0) {
        return this._indices[idx];
    }
    return -1;
}

/**
 * Get raw data item
 * @param {number} idx
 * @return {number}
 */
listProto.getRawDataItem = function (idx) {
    if (!this._rawData.persistent) {
        var val = [];
        for (var i = 0; i < this.dimensions.length; i++) {
            var dim = this.dimensions[i];
            val.push(this.get(dim, idx));
        }
        return val;
    }
    else {
        return this._rawData.getItem(this.getRawIndex(idx));
    }
};

/**
 * @param {number} idx
 * @param {boolean} [notDefaultIdx=false]
 * @return {string}
 */
listProto.getName = function (idx) {
    var rawIndex = this.getRawIndex(idx);
    return this._nameList[rawIndex]
        || this._getNameFromStore(rawIndex)
        || '';
};

/**
 * @param {number} idx
 * @param {boolean} [notDefaultIdx=false]
 * @return {string}
 */
listProto.getId = function (idx) {
    return getId(this, this.getRawIndex(idx));
};

function getId(list, rawIndex) {
    var id = list._idList[rawIndex];
    if (id == null) {
        id = list._getIdFromStore(rawIndex);
    }
    if (id == null) {
        // FIXME Check the usage in graph, should not use prefix.
        id = ID_PREFIX + rawIndex;
    }
    return id;
}

function normalizeDimensions(dimensions) {
    if (!isArray(dimensions)) {
        dimensions = [dimensions];
    }
    return dimensions;
}

function validateDimensions(list, dims) {
    for (var i = 0; i < dims.length; i++) {
        // stroage may be empty when no data, so use
        // dimensionInfos to check.
        if (!list._dimensionInfos[dims[i]]) {
            console.error('Unkown dimension ' + dims[i]);
        }
    }
}

/**
 * Data iteration
 * @param {string|Array.<string>}
 * @param {Function} cb
 * @param {*} [context=this]
 *
 * @example
 *  list.each('x', function (x, idx) {});
 *  list.each(['x', 'y'], function (x, y, idx) {});
 *  list.each(function (idx) {})
 */
listProto.each = function (dims, cb, context, contextCompat) {
    'use strict';

    if (!this._count) {
        return;
    }

    if (typeof dims === 'function') {
        contextCompat = context;
        context = cb;
        cb = dims;
        dims = [];
    }

    // contextCompat just for compat echarts3
    context = context || contextCompat || this;

    dims = map(normalizeDimensions(dims), this.getDimension, this);

    if (__DEV__) {
        validateDimensions(this, dims);
    }

    var dimSize = dims.length;

    for (var i = 0; i < this.count(); i++) {
        // Simple optimization
        switch (dimSize) {
            case 0:
                cb.call(context, i);
                break;
            case 1:
                cb.call(context, this.get(dims[0], i), i);
                break;
            case 2:
                cb.call(context, this.get(dims[0], i), this.get(dims[1], i), i);
                break;
            default:
                var k = 0;
                var value = [];
                for (; k < dimSize; k++) {
                    value[k] = this.get(dims[k], i);
                }
                // Index
                value[k] = i;
                cb.apply(context, value);
        }
    }
};

/**
 * Data filter
 * @param {string|Array.<string>}
 * @param {Function} cb
 * @param {*} [context=this]
 */
listProto.filterSelf = function (dimensions, cb, context, contextCompat) {
    'use strict';

    if (!this._count) {
        return;
    }

    if (typeof dimensions === 'function') {
        contextCompat = context;
        context = cb;
        cb = dimensions;
        dimensions = [];
    }

    // contextCompat just for compat echarts3
    context = context || contextCompat || this;

    dimensions = map(
        normalizeDimensions(dimensions), this.getDimension, this
    );

    if (__DEV__) {
        validateDimensions(this, dimensions);
    }


    var count = this.count();
    var Ctor = getIndicesCtor(this);
    var newIndices = new Ctor(count);
    var value = [];
    var dimSize = dimensions.length;

    var offset = 0;
    var dim0 = dimensions[0];

    for (var i = 0; i < count; i++) {
        var keep;
        var rawIdx = this.getRawIndex(i);
        // Simple optimization
        if (dimSize === 0) {
            keep = cb.call(context, i);
        }
        else if (dimSize === 1) {
            var val = this._getFast(dim0, rawIdx);
            keep = cb.call(context, val, i);
        }
        else {
            for (var k = 0; k < dimSize; k++) {
                value[k] = this._getFast(dim0, rawIdx);
            }
            value[k] = i;
            keep = cb.apply(context, value);
        }
        if (keep) {
            newIndices[offset++] = rawIdx;
        }
    }

    // Set indices after filtered.
    if (offset < count) {
        this._indices = newIndices;
    }
    this._count = offset;
    // Reset data extent
    this._extent = {};

    this.getRawIndex = this._indices ? getRawIndexWithIndices : getRawIndexWithoutIndices;

    return this;
};

/**
 * Select data in range. (For optimization of filter)
 * (Manually inline code, support 5 million data filtering in data zoom.)
 */
listProto.selectRange = function (range /*, stack */) {
    'use strict';

    if (!this._count) {
        return;
    }

    // stack = stack || false;

    var dimensions = [];
    for (var dim in range) {
        if (range.hasOwnProperty(dim)) {
            dimensions.push(dim);
        }
    }

    if (__DEV__) {
        validateDimensions(this, dimensions);
    }

    var dimSize = dimensions.length;
    if (!dimSize) {
        return;
    }

    var originalCount = this.count();
    var Ctor = getIndicesCtor(this);
    var newIndices = new Ctor(originalCount);

    var offset = 0;
    var dim0 = dimensions[0];

    var min = range[dim0][0];
    var max = range[dim0][1];

    var quickFinished = false;
    if (!this._indices /* && !stack */) {
        // Extreme optimization for common case. About 2x faster in chrome.
        var idx = 0;
        if (dimSize === 1) {
            var dimStorage = this._storage[dimensions[0]];
            for (var k = 0; k < this._chunkCount; k++) {
                var chunkStorage = dimStorage[k];
                var len = Math.min(this._count - k * this._chunkSize, this._chunkSize);
                for (var i = 0; i < len; i++) {
                    var val = chunkStorage[i];
                    if (val >= min && val <= max) {
                        newIndices[offset++] = idx;
                    }
                    idx++;
                }
            }
            quickFinished = true;
        }
        else if (dimSize === 2) {
            var dimStorage = this._storage[dim0];
            var dimStorage2 = this._storage[dimensions[1]];
            var min2 = range[dimensions[1]][0];
            var max2 = range[dimensions[1]][1];
            for (var k = 0; k < this._chunkCount; k++) {
                var chunkStorage = dimStorage[k];
                var chunkStorage2= dimStorage2[k];
                var len = Math.min(this._count - k * this._chunkSize, this._chunkSize);
                for (var i = 0; i < len; i++) {
                    var val = chunkStorage[i];
                    var val2 = chunkStorage2[i];
                    if (val >= min && val <= max && val2 >= min2 && val2 <= max2) {
                        newIndices[offset++] = idx;
                    }
                    idx++;
                }
            }
            quickFinished = true;
        }
    }
    if (!quickFinished) {
        if (dimSize === 1) {
            // stack = stack || !!this.getCalculationInfo(dim0);
            for (var i = 0; i < originalCount; i++) {
                var rawIndex = this.getRawIndex(i);
                // var val = stack ? this.get(dim0, i, true) : this._getFast(dim0, rawIndex);
                var val = this._getFast(dim0, rawIndex);
                if (val >= min && val <= max) {
                    newIndices[offset++] = rawIndex;
                }
            }
        }
        else {
            for (var i = 0; i < originalCount; i++) {
                var keep = true;
                var rawIndex = this.getRawIndex(i);
                for (var k = 0; k < dimSize; k++) {
                    var dimk = dimensions[k];
                    // var val = stack ? this.get(dimk, i, true) : this._getFast(dim, rawIndex);
                    var val = this._getFast(dim, rawIndex);
                    if (val < range[dimk][0] || val > range[dimk][1]) {
                        keep = false;
                    }
                }
                if (keep) {
                    newIndices[offset++] = this.getRawIndex(i);
                }
            }
        }
    }

    // Set indices after filtered.
    if (offset < originalCount) {
        this._indices = newIndices;
    }
    this._count = offset;
    // Reset data extent
    this._extent = {};

    this.getRawIndex = this._indices ? getRawIndexWithIndices : getRawIndexWithoutIndices;

    return this;
};

/**
 * Data mapping to a plain array
 * @param {string|Array.<string>} [dimensions]
 * @param {Function} cb
 * @param {*} [context=this]
 * @return {Array}
 */
listProto.mapArray = function (dimensions, cb, context, contextCompat) {
    'use strict';

    if (typeof dimensions === 'function') {
        contextCompat = context;
        context = cb;
        cb = dimensions;
        dimensions = [];
    }

    // contextCompat just for compat echarts3
    context = context || contextCompat || this;

    var result = [];
    this.each(dimensions, function () {
        result.push(cb && cb.apply(this, arguments));
    }, context);
    return result;
};

// Data in excludeDimensions is copied, otherwise transfered.
function cloneListForMapAndSample(original, excludeDimensions) {
    var allDimensions = original.dimensions;
    var list = new List(
        map(allDimensions, original.getDimensionInfo, original),
        original.hostModel
    );
    // FIXME If needs stackedOn, value may already been stacked
    transferProperties(list, original);

    var storage = list._storage = {};
    var originalStorage = original._storage;
    var rawExtent = extend({}, original._rawExtent);

    // Init storage
    for (var i = 0; i < allDimensions.length; i++) {
        var dim = allDimensions[i];
        if (originalStorage[dim]) {
            if (indexOf(excludeDimensions, dim) >= 0) {
                storage[dim] = cloneDimStore(originalStorage[dim]);
                rawExtent[dim] = getInitialExtent();
            }
            else {
                // Direct reference for other dimensions
                storage[dim] = originalStorage[dim];
            }
        }
    }
    return list;
}

function cloneDimStore(originalDimStore) {
    var newDimStore = new Array(originalDimStore.length);
    for (var j = 0; j < originalDimStore.length; j++) {
        newDimStore[j] = cloneChunk(originalDimStore[j]);
    }
    return newDimStore;
}

function getInitialExtent() {
    return [Infinity, -Infinity];
}

/**
 * Data mapping to a new List with given dimensions
 * @param {string|Array.<string>} dimensions
 * @param {Function} cb
 * @param {*} [context=this]
 * @return {Array}
 */
listProto.map = function (dimensions, cb, context, contextCompat) {
    'use strict';

    // contextCompat just for compat echarts3
    context = context || contextCompat || this;

    dimensions = map(
        normalizeDimensions(dimensions), this.getDimension, this
    );

    if (__DEV__) {
        validateDimensions(this, dimensions);
    }

    var list = cloneListForMapAndSample(this, dimensions);

    // Following properties are all immutable.
    // So we can reference to the same value
    list._indices = this._indices;
    list.getRawIndex = list._indices ? getRawIndexWithIndices : getRawIndexWithoutIndices;

    var storage = list._storage;

    var tmpRetValue = [];
    var chunkSize = this._chunkSize;
    var dimSize = dimensions.length;
    var dataCount = this.count();
    var values = [];
    var rawExtent = list._rawExtent;

    for (var dataIndex = 0; dataIndex < dataCount; dataIndex++) {
        for (var dimIndex = 0; dimIndex < dimSize; dimIndex++) {
            values[dimIndex] = this.get(dimensions[dimIndex], dataIndex /*, stack */);
        }
        values[dimSize] = dataIndex;

        var retValue = cb && cb.apply(context, values);
        if (retValue != null) {
            // a number or string (in oridinal dimension)?
            if (typeof retValue !== 'object') {
                tmpRetValue[0] = retValue;
                retValue = tmpRetValue;
            }

            var rawIndex = this.getRawIndex(dataIndex);
            var chunkIndex = Math.floor(rawIndex / chunkSize);
            var chunkOffset = rawIndex % chunkSize;

            for (var i = 0; i < retValue.length; i++) {
                var dim = dimensions[i];
                var val = retValue[i];
                var rawExtentOnDim = rawExtent[dim];

                var dimStore = storage[dim];
                if (dimStore) {
                    dimStore[chunkIndex][chunkOffset] = val;
                }

                if (val < rawExtentOnDim[0]) {
                    rawExtentOnDim[0] = val;
                }
                if (val > rawExtentOnDim[1]) {
                    rawExtentOnDim[1] = val;
                }
            }
        }
    }

    return list;
};

/**
 * Large data down sampling on given dimension
 * @param {string} dimension
 * @param {number} rate
 * @param {Function} sampleValue
 * @param {Function} sampleIndex Sample index for name and id
 */
listProto.downSample = function (dimension, rate, sampleValue, sampleIndex) {
    var list = cloneListForMapAndSample(this, [dimension]);
    var targetStorage = list._storage;

    var frameValues = [];
    var frameSize = Math.floor(1 / rate);

    var dimStore = targetStorage[dimension];
    var len = this.count();
    var chunkSize = this._chunkSize;
    var rawExtentOnDim = list._rawExtent[dimension];

    var newIndices = new (getIndicesCtor(this))(len);

    var offset = 0;
    for (var i = 0; i < len; i += frameSize) {
        // Last frame
        if (frameSize > len - i) {
            frameSize = len - i;
            frameValues.length = frameSize;
        }
        for (var k = 0; k < frameSize; k++) {
            var dataIdx = this.getRawIndex(i + k);
            var originalChunkIndex = Math.floor(dataIdx / chunkSize);
            var originalChunkOffset = dataIdx % chunkSize;
            frameValues[k] = dimStore[originalChunkIndex][originalChunkOffset];
        }
        var value = sampleValue(frameValues);
        var sampleFrameIdx = this.getRawIndex(
            Math.min(i + sampleIndex(frameValues, value) || 0, len - 1)
        );
        var sampleChunkIndex = Math.floor(sampleFrameIdx / chunkSize);
        var sampleChunkOffset = sampleFrameIdx % chunkSize;
        // Only write value on the filtered data
        dimStore[sampleChunkIndex][sampleChunkOffset] = value;

        if (value < rawExtentOnDim[0]) {
            rawExtentOnDim[0] = value;
        }
        if (value > rawExtentOnDim[1]) {
            rawExtentOnDim[1] = value;
        }

        newIndices[offset++] = sampleFrameIdx;
    }

    list._count = offset;
    list._indices = newIndices;

    list.getRawIndex = getRawIndexWithIndices;

    return list;
};

/**
 * Get model of one data item.
 *
 * @param {number} idx
 */
// FIXME Model proxy ?
listProto.getItemModel = function (idx) {
    var hostModel = this.hostModel;
    return new Model(this.getRawDataItem(idx), hostModel, hostModel && hostModel.ecModel);
};

/**
 * Create a data differ
 * @param {module:echarts/data/List} otherList
 * @return {module:echarts/data/DataDiffer}
 */
listProto.diff = function (otherList) {
    var thisList = this;

    return new DataDiffer(
        otherList ? otherList.getIndices() : [],
        this.getIndices(),
        function (idx) {
            return getId(otherList, idx);
        },
        function (idx) {
            return getId(thisList, idx);
        }
    );
};
/**
 * Get visual property.
 * @param {string} key
 */
listProto.getVisual = function (key) {
    var visual = this._visual;
    return visual && visual[key];
};

/**
 * Set visual property
 * @param {string|Object} key
 * @param {*} [value]
 *
 * @example
 *  setVisual('color', color);
 *  setVisual({
 *      'color': color
 *  });
 */
listProto.setVisual = function (key, val) {
    if (isObject$4(key)) {
        for (var name in key) {
            if (key.hasOwnProperty(name)) {
                this.setVisual(name, key[name]);
            }
        }
        return;
    }
    this._visual = this._visual || {};
    this._visual[key] = val;
};

/**
 * Set layout property.
 * @param {string|Object} key
 * @param {*} [val]
 */
listProto.setLayout = function (key, val) {
    if (isObject$4(key)) {
        for (var name in key) {
            if (key.hasOwnProperty(name)) {
                this.setLayout(name, key[name]);
            }
        }
        return;
    }
    this._layout[key] = val;
};

/**
 * Get layout property.
 * @param  {string} key.
 * @return {*}
 */
listProto.getLayout = function (key) {
    return this._layout[key];
};

/**
 * Get layout of single data item
 * @param {number} idx
 */
listProto.getItemLayout = function (idx) {
    return this._itemLayouts[idx];
};

/**
 * Set layout of single data item
 * @param {number} idx
 * @param {Object} layout
 * @param {boolean=} [merge=false]
 */
listProto.setItemLayout = function (idx, layout, merge$$1) {
    this._itemLayouts[idx] = merge$$1
        ? extend(this._itemLayouts[idx] || {}, layout)
        : layout;
};

/**
 * Clear all layout of single data item
 */
listProto.clearItemLayouts = function () {
    this._itemLayouts.length = 0;
};

/**
 * Get visual property of single data item
 * @param {number} idx
 * @param {string} key
 * @param {boolean} [ignoreParent=false]
 */
listProto.getItemVisual = function (idx, key, ignoreParent) {
    var itemVisual = this._itemVisuals[idx];
    var val = itemVisual && itemVisual[key];
    if (val == null && !ignoreParent) {
        // Use global visual property
        return this.getVisual(key);
    }
    return val;
};

/**
 * Set visual property of single data item
 *
 * @param {number} idx
 * @param {string|Object} key
 * @param {*} [value]
 *
 * @example
 *  setItemVisual(0, 'color', color);
 *  setItemVisual(0, {
 *      'color': color
 *  });
 */
listProto.setItemVisual = function (idx, key, value) {
    var itemVisual = this._itemVisuals[idx] || {};
    var hasItemVisual = this.hasItemVisual;
    this._itemVisuals[idx] = itemVisual;

    if (isObject$4(key)) {
        for (var name in key) {
            if (key.hasOwnProperty(name)) {
                itemVisual[name] = key[name];
                hasItemVisual[name] = true;
            }
        }
        return;
    }
    itemVisual[key] = value;
    hasItemVisual[key] = true;
};

/**
 * Clear itemVisuals and list visual.
 */
listProto.clearAllVisual = function () {
    this._visual = {};
    this._itemVisuals = [];
    this.hasItemVisual = {};
};

var setItemDataAndSeriesIndex = function (child) {
    child.seriesIndex = this.seriesIndex;
    child.dataIndex = this.dataIndex;
    child.dataType = this.dataType;
};
/**
 * Set graphic element relative to data. It can be set as null
 * @param {number} idx
 * @param {module:zrender/Element} [el]
 */
listProto.setItemGraphicEl = function (idx, el) {
    var hostModel = this.hostModel;

    if (el) {
        // Add data index and series index for indexing the data by element
        // Useful in tooltip
        el.dataIndex = idx;
        el.dataType = this.dataType;
        el.seriesIndex = hostModel && hostModel.seriesIndex;
        if (el.type === 'group') {
            el.traverse(setItemDataAndSeriesIndex, el);
        }
    }

    this._graphicEls[idx] = el;
};

/**
 * @param {number} idx
 * @return {module:zrender/Element}
 */
listProto.getItemGraphicEl = function (idx) {
    return this._graphicEls[idx];
};

/**
 * @param {Function} cb
 * @param {*} context
 */
listProto.eachItemGraphicEl = function (cb, context) {
    each$1(this._graphicEls, function (el, idx) {
        if (el) {
            cb && cb.call(context, el, idx);
        }
    });
};

/**
 * Shallow clone a new list except visual and layout properties, and graph elements.
 * New list only change the indices.
 */
listProto.cloneShallow = function (list) {
    if (!list) {
        var dimensionInfoList = map(this.dimensions, this.getDimensionInfo, this);
        list = new List(dimensionInfoList, this.hostModel);
    }

    // FIXME
    list._storage = this._storage;

    transferProperties(list, this);

    // Clone will not change the data extent and indices
    if (this._indices) {
        var Ctor = this._indices.constructor;
        list._indices = new Ctor(this._indices);
    }
    else {
        list._indices = null;
    }
    list.getRawIndex = list._indices ? getRawIndexWithIndices : getRawIndexWithoutIndices;

    list._extent = clone(this._extent);
    list._approximateExtent = clone(this._approximateExtent);

    return list;
};

/**
 * Wrap some method to add more feature
 * @param {string} methodName
 * @param {Function} injectFunction
 */
listProto.wrapMethod = function (methodName, injectFunction) {
    var originalMethod = this[methodName];
    if (typeof originalMethod !== 'function') {
        return;
    }
    this.__wrappedMethods = this.__wrappedMethods || [];
    this.__wrappedMethods.push(methodName);
    this[methodName] = function () {
        var res = originalMethod.apply(this, arguments);
        return injectFunction.apply(this, [res].concat(slice(arguments)));
    };
};

// Methods that create a new list based on this list should be listed here.
// Notice that those method should `RETURN` the new list.
listProto.TRANSFERABLE_METHODS = ['cloneShallow', 'downSample', 'map'];
// Methods that change indices of this list should be listed here.
listProto.CHANGABLE_METHODS = ['filterSelf', 'selectRange'];

/**
 * @deprecated
 * Use `echarts/data/helper/createDimensions` instead.
 */

/**
 * @see {module:echarts/test/ut/spec/data/completeDimensions}
 *
 * Complete the dimensions array, by user defined `dimension` and `encode`,
 * and guessing from the data structure.
 * If no 'value' dimension specified, the first no-named dimension will be
 * named as 'value'.
 *
 * @param {Array.<string>} sysDims Necessary dimensions, like ['x', 'y'], which
 *      provides not only dim template, but also default order.
 *      properties: 'name', 'type', 'displayName'.
 *      `name` of each item provides default coord name.
 *      [{dimsDef: [string...]}, ...] dimsDef of sysDim item provides default dim name, and
 *                                    provide dims count that the sysDim required.
 *      [{ordinalMeta}] can be specified.
 * @param {module:echarts/data/Source|Array|Object} source or data (for compatibal with pervious)
 * @param {Object} [opt]
 * @param {Array.<Object|string>} [opt.dimsDef] option.series.dimensions User defined dimensions
 *      For example: ['asdf', {name, type}, ...].
 * @param {Object|HashMap} [opt.encodeDef] option.series.encode {x: 2, y: [3, 1], tooltip: [1, 2], label: 3}
 * @param {string} [opt.generateCoord] Generate coord dim with the given name.
 *                 If not specified, extra dim names will be:
 *                 'value', 'value0', 'value1', ...
 * @param {number} [opt.generateCoordCount] By default, the generated dim name is `generateCoord`.
 *                 If `generateCoordCount` specified, the generated dim names will be:
 *                 `generateCoord` + 0, `generateCoord` + 1, ...
 *                 can be Infinity, indicate that use all of the remain columns.
 * @param {number} [opt.dimCount] If not specified, guess by the first data item.
 * @param {number} [opt.encodeDefaulter] If not specified, auto find the next available data dim.
 * @return {Array.<Object>} [{
 *      name: string mandatory,
 *      displayName: string, the origin name in dimsDef, see source helper.
 *                 If displayName given, the tooltip will displayed vertically.
 *      coordDim: string mandatory,
 *      coordDimIndex: number mandatory,
 *      type: string optional,
 *      otherDims: { never null/undefined
 *          tooltip: number optional,
 *          label: number optional,
 *          itemName: number optional,
 *          seriesName: number optional,
 *      },
 *      isExtraCoord: boolean true if coord is generated
 *          (not specified in encode and not series specified)
 *      other props ...
 * }]
 */
function completeDimensions(sysDims, source, opt) {
    if (!Source.isInstance(source)) {
        source = Source.seriesDataToSource(source);
    }

    opt = opt || {};
    sysDims = (sysDims || []).slice();
    var dimsDef = (opt.dimsDef || []).slice();
    var encodeDef = createHashMap(opt.encodeDef);
    var dataDimNameMap = createHashMap();
    var coordDimNameMap = createHashMap();
    // var valueCandidate;
    var result = [];

    var dimCount = getDimCount(source, sysDims, dimsDef, opt.dimCount);

    // Apply user defined dims (`name` and `type`) and init result.
    for (var i = 0; i < dimCount; i++) {
        var dimDefItem = dimsDef[i] = extend(
            {}, isObject$1(dimsDef[i]) ? dimsDef[i] : {name: dimsDef[i]}
        );
        var userDimName = dimDefItem.name;
        var resultItem = result[i] = {otherDims: {}};
        // Name will be applied later for avoiding duplication.
        if (userDimName != null && dataDimNameMap.get(userDimName) == null) {
            // Only if `series.dimensions` is defined in option
            // displayName, will be set, and dimension will be diplayed vertically in
            // tooltip by default.
            resultItem.name = resultItem.displayName = userDimName;
            dataDimNameMap.set(userDimName, i);
        }
        dimDefItem.type != null && (resultItem.type = dimDefItem.type);
        dimDefItem.displayName != null && (resultItem.displayName = dimDefItem.displayName);
    }

    // Set `coordDim` and `coordDimIndex` by `encodeDef` and normalize `encodeDef`.
    encodeDef.each(function (dataDims, coordDim) {
        dataDims = normalizeToArray(dataDims).slice();
        var validDataDims = encodeDef.set(coordDim, []);
        each$1(dataDims, function (resultDimIdx, idx) {
            // The input resultDimIdx can be dim name or index.
            isString(resultDimIdx) && (resultDimIdx = dataDimNameMap.get(resultDimIdx));
            if (resultDimIdx != null && resultDimIdx < dimCount) {
                validDataDims[idx] = resultDimIdx;
                applyDim(result[resultDimIdx], coordDim, idx);
            }
        });
    });

    // Apply templetes and default order from `sysDims`.
    var availDimIdx = 0;
    each$1(sysDims, function (sysDimItem, sysDimIndex) {
        var coordDim;
        var sysDimItem;
        var sysDimItemDimsDef;
        var sysDimItemOtherDims;
        if (isString(sysDimItem)) {
            coordDim = sysDimItem;
            sysDimItem = {};
        }
        else {
            coordDim = sysDimItem.name;
            var ordinalMeta = sysDimItem.ordinalMeta;
            sysDimItem.ordinalMeta = null;
            sysDimItem = clone(sysDimItem);
            sysDimItem.ordinalMeta = ordinalMeta;
            // `coordDimIndex` should not be set directly.
            sysDimItemDimsDef = sysDimItem.dimsDef;
            sysDimItemOtherDims = sysDimItem.otherDims;
            sysDimItem.name = sysDimItem.coordDim = sysDimItem.coordDimIndex
                = sysDimItem.dimsDef = sysDimItem.otherDims = null;
        }

        var dataDims = normalizeToArray(encodeDef.get(coordDim));
        // dimensions provides default dim sequences.
        if (!dataDims.length) {
            for (var i = 0; i < (sysDimItemDimsDef && sysDimItemDimsDef.length || 1); i++) {
                while (availDimIdx < result.length && result[availDimIdx].coordDim != null) {
                    availDimIdx++;
                }
                availDimIdx < result.length && dataDims.push(availDimIdx++);
            }
        }

        // Apply templates.
        each$1(dataDims, function (resultDimIdx, coordDimIndex) {
            var resultItem = result[resultDimIdx];
            applyDim(defaults(resultItem, sysDimItem), coordDim, coordDimIndex);
            if (resultItem.name == null && sysDimItemDimsDef) {
                resultItem.name = resultItem.displayName = sysDimItemDimsDef[coordDimIndex];
            }
            // FIXME refactor, currently only used in case: {otherDims: {tooltip: false}}
            sysDimItemOtherDims && defaults(resultItem.otherDims, sysDimItemOtherDims);
        });
    });

    function applyDim(resultItem, coordDim, coordDimIndex) {
        if (OTHER_DIMENSIONS.get(coordDim) != null) {
            resultItem.otherDims[coordDim] = coordDimIndex;
        }
        else {
            resultItem.coordDim = coordDim;
            resultItem.coordDimIndex = coordDimIndex;
            coordDimNameMap.set(coordDim, true);
        }
    }

    // Make sure the first extra dim is 'value'.
    var generateCoord = opt.generateCoord;
    var generateCoordCount = opt.generateCoordCount;
    var fromZero = generateCoordCount != null;
    generateCoordCount = generateCoord ? (generateCoordCount || 1) : 0;
    var extra = generateCoord || 'value';

    // Set dim `name` and other `coordDim` and other props.
    for (var resultDimIdx = 0; resultDimIdx < dimCount; resultDimIdx++) {
        var resultItem = result[resultDimIdx] = result[resultDimIdx] || {};
        var coordDim = resultItem.coordDim;

        if (coordDim == null) {
            resultItem.coordDim = genName(
                extra, coordDimNameMap, fromZero
            );
            resultItem.coordDimIndex = 0;
            if (!generateCoord || generateCoordCount <= 0) {
                resultItem.isExtraCoord = true;
            }
            generateCoordCount--;
        }

        resultItem.name == null && (resultItem.name = genName(
            resultItem.coordDim,
            dataDimNameMap
        ));

        if (resultItem.type == null && guessOrdinal(source, resultDimIdx, resultItem.name)) {
            resultItem.type = 'ordinal';
        }
    }

    return result;
}

// ??? TODO
// Originally detect dimCount by data[0]. Should we
// optimize it to only by sysDims and dimensions and encode.
// So only necessary dims will be initialized.
// But
// (1) custom series should be considered. where other dims
// may be visited.
// (2) sometimes user need to calcualte bubble size or use visualMap
// on other dimensions besides coordSys needed.
// So, dims that is not used by system, should be shared in storage?
function getDimCount(source, sysDims, dimsDef, optDimCount) {
    // Note that the result dimCount should not small than columns count
    // of data, otherwise `dataDimNameMap` checking will be incorrect.
    var dimCount = Math.max(
        source.dimensionsDetectCount || 1,
        sysDims.length,
        dimsDef.length,
        optDimCount || 0
    );
    each$1(sysDims, function (sysDimItem) {
        var sysDimItemDimsDef = sysDimItem.dimsDef;
        sysDimItemDimsDef && (dimCount = Math.max(dimCount, sysDimItemDimsDef.length));
    });
    return dimCount;
}

function genName(name, map$$1, fromZero) {
    if (fromZero || map$$1.get(name) != null) {
        var i = 0;
        while (map$$1.get(name + i) != null) {
            i++;
        }
        name += i;
    }
    map$$1.set(name, true);
    return name;
}

/**
 * Substitute `completeDimensions`.
 * `completeDimensions` is to be deprecated.
 */
/**
 * @param {module:echarts/data/Source|module:echarts/data/List} source or data.
 * @param {Object|Array} [opt]
 * @param {Array.<string|Object>} [opt.coordDimensions=[]]
 * @param {number} [opt.dimensionsCount]
 * @param {string} [opt.generateCoord]
 * @param {string} [opt.generateCoordCount]
 * @param {Array.<string|Object>} [opt.dimensionsDefine=source.dimensionsDefine] Overwrite source define.
 * @param {Object|HashMap} [opt.encodeDefine=source.encodeDefine] Overwrite source define.
 * @return {Array.<Object>} dimensionsInfo
 */
var createDimensions = function (source, opt) {
    opt = opt || {};
    return completeDimensions(opt.coordDimensions || [], source, {
        dimsDef: opt.dimensionsDefine || source.dimensionsDefine,
        encodeDef: opt.encodeDefine || source.encodeDefine,
        dimCount: opt.dimensionsCount,
        generateCoord: opt.generateCoord,
        generateCoordCount: opt.generateCoordCount
    });
};

/**
 * Note that it is too complicated to support 3d stack by value
 * (have to create two-dimension inverted index), so in 3d case
 * we just support that stacked by index.
 *
 * @param {module:echarts/model/Series} seriesModel
 * @param {Array.<string|Object>} dimensionInfoList The same as the input of <module:echarts/data/List>.
 *        The input dimensionInfoList will be modified.
 * @param {Object} [opt]
 * @param {boolean} [opt.stackedCoordDimension=''] Specify a coord dimension if needed.
 * @param {boolean} [opt.byIndex=false]
 * @return {Object} calculationInfo
 * {
 *     stackedDimension: string
 *     stackedByDimension: string
 *     isStackedByIndex: boolean
 *     stackedOverDimension: string
 *     stackResultDimension: string
 * }
 */
function enableDataStack(seriesModel, dimensionInfoList, opt) {
    opt = opt || {};
    var byIndex = opt.byIndex;
    var stackedCoordDimension = opt.stackedCoordDimension;

    // Compatibal: when `stack` is set as '', do not stack.
    var mayStack = !!(seriesModel && seriesModel.get('stack'));
    var stackedByDimInfo;
    var stackedDimInfo;
    var stackResultDimension;
    var stackedOverDimension;

    each$1(dimensionInfoList, function (dimensionInfo, index) {
        if (isString(dimensionInfo)) {
            dimensionInfoList[index] = dimensionInfo = {name: dimensionInfo};
        }

        if (mayStack && !dimensionInfo.isExtraCoord) {
            // Find the first ordinal dimension as the stackedByDimInfo.
            if (!byIndex && !stackedByDimInfo && dimensionInfo.ordinalMeta) {
                stackedByDimInfo = dimensionInfo;
            }
            // Find the first stackable dimension as the stackedDimInfo.
            if (!stackedDimInfo
                && dimensionInfo.type !== 'ordinal'
                && dimensionInfo.type !== 'time'
                && (!stackedCoordDimension || stackedCoordDimension === dimensionInfo.coordDim)
            ) {
                stackedDimInfo = dimensionInfo;
            }
        }
    });

    // Add stack dimension, they can be both calculated by coordinate system in `unionExtent`.
    // That put stack logic in List is for using conveniently in echarts extensions, but it
    // might not be a good way.
    if (stackedDimInfo && (byIndex || stackedByDimInfo)) {
        // Use a weird name that not duplicated with other names.
        stackResultDimension = '__\0ecstackresult';
        stackedOverDimension = '__\0ecstackedover';

        // Create inverted index to fast query index by value.
        if (stackedByDimInfo) {
            stackedByDimInfo.createInvertedIndices = true;
        }

        var stackedDimCoordDim = stackedDimInfo.coordDim;
        var stackedDimType = stackedDimInfo.type;
        var stackedDimCoordIndex = 0;

        each$1(dimensionInfoList, function (dimensionInfo) {
            if (dimensionInfo.coordDim === stackedDimCoordDim) {
                stackedDimCoordIndex++;
            }
        });

        dimensionInfoList.push({
            name: stackResultDimension,
            coordDim: stackedDimCoordDim,
            coordDimIndex: stackedDimCoordIndex,
            type: stackedDimType,
            isExtraCoord: true,
            isCalculationCoord: true
        });

        stackedDimCoordIndex++;

        dimensionInfoList.push({
            name: stackedOverDimension,
            // This dimension contains stack base (generally, 0), so do not set it as
            // `stackedDimCoordDim` to avoid extent calculation, consider log scale.
            coordDim: stackedOverDimension,
            coordDimIndex: stackedDimCoordIndex,
            type: stackedDimType,
            isExtraCoord: true,
            isCalculationCoord: true
        });
    }

    return {
        stackedDimension: stackedDimInfo && stackedDimInfo.name,
        stackedByDimension: stackedByDimInfo && stackedByDimInfo.name,
        isStackedByIndex: byIndex,
        stackedOverDimension: stackedOverDimension,
        stackResultDimension: stackResultDimension
    };
}

/**
 * @param {module:echarts/data/List} data
 * @param {string} stackedDim
 * @param {string} [stackedByDim] If not input this parameter, check whether
 *                                stacked by index.
 */
function isDimensionStacked(data, stackedDim, stackedByDim) {
    return stackedDim
        && stackedDim === data.getCalculationInfo('stackedDimension')
        && (
            stackedByDim != null
                ? stackedByDim === data.getCalculationInfo('stackedByDimension')
                : data.getCalculationInfo('isStackedByIndex')
        );
}

/**
 * @param {module:echarts/data/Source|Array} source Or raw data.
 * @param {module:echarts/model/Series} seriesModel
 * @param {Object} [opt]
 * @param {string} [opt.generateCoord]
 */
function createListFromArray(source, seriesModel, opt) {
    opt = opt || {};

    if (!Source.isInstance(source)) {
        source = Source.seriesDataToSource(source);
    }

    var coordSysName = seriesModel.get('coordinateSystem');
    var registeredCoordSys = CoordinateSystemManager.get(coordSysName);

    var coordSysDefine = getCoordSysDefineBySeries(seriesModel);

    var coordSysDimDefs;

    if (coordSysDefine) {
        coordSysDimDefs = map(coordSysDefine.coordSysDims, function (dim) {
            var dimInfo = {name: dim};
            var axisModel = coordSysDefine.axisMap.get(dim);
            if (axisModel) {
                var axisType = axisModel.get('type');
                dimInfo.type = getDimensionTypeByAxis(axisType);
                // dimInfo.stackable = isStackable(axisType);
            }
            return dimInfo;
        });
    }

    if (!coordSysDimDefs) {
        // Get dimensions from registered coordinate system
        coordSysDimDefs = (registeredCoordSys && (
            registeredCoordSys.getDimensionsInfo
                ? registeredCoordSys.getDimensionsInfo()
                : registeredCoordSys.dimensions.slice()
        )) || ['x', 'y'];
    }

    var dimInfoList = createDimensions(source, {
        coordDimensions: coordSysDimDefs,
        generateCoord: opt.generateCoord
    });

    var firstCategoryDimIndex;
    var hasNameEncode;
    coordSysDefine && each$1(dimInfoList, function (dimInfo, dimIndex) {
        var coordDim = dimInfo.coordDim;
        var categoryAxisModel = coordSysDefine.categoryAxisMap.get(coordDim);
        if (categoryAxisModel) {
            if (firstCategoryDimIndex == null) {
                firstCategoryDimIndex = dimIndex;
            }
            dimInfo.ordinalMeta = categoryAxisModel.getOrdinalMeta();
        }
        if (dimInfo.otherDims.itemName != null) {
            hasNameEncode = true;
        }
    });
    if (!hasNameEncode && firstCategoryDimIndex != null) {
        dimInfoList[firstCategoryDimIndex].otherDims.itemName = 0;
    }

    var stackCalculationInfo = enableDataStack(seriesModel, dimInfoList);

    var list = new List(dimInfoList, seriesModel);

    list.setCalculationInfo(stackCalculationInfo);

    var dimValueGetter = (firstCategoryDimIndex != null && isNeedCompleteOrdinalData(source))
        ? function (itemOpt, dimName, dataIndex, dimIndex) {
            // Use dataIndex as ordinal value in categoryAxis
            return dimIndex === firstCategoryDimIndex
                ? dataIndex
                : this.defaultDimValueGetter(itemOpt, dimName, dataIndex, dimIndex);
        }
        : null;

    list.hasItemOption = false;
    list.initData(source, null, dimValueGetter);

    return list;
}

function isNeedCompleteOrdinalData(source) {
    if (source.sourceFormat === SOURCE_FORMAT_ORIGINAL) {
        var sampleItem = firstDataNotNull(source.data || []);
        return sampleItem != null
            && !isArray(getDataItemValue(sampleItem));
    }
}

function firstDataNotNull(data) {
    var i = 0;
    while (i < data.length && data[i] == null) {
        i++;
    }
    return data[i];
}

SeriesModel.extend({

    type: 'series.line',

    dependencies: ['grid', 'polar'],

    getInitialData: function (option, ecModel) {
        if (__DEV__) {
            var coordSys = option.coordinateSystem;
            if (coordSys !== 'polar' && coordSys !== 'cartesian2d') {
                throw new Error('Line not support coordinateSystem besides cartesian and polar');
            }
        }
        return createListFromArray(this.getSource(), this);
    },

    defaultOption: {
        zlevel: 0,                  // 一级层叠
        z: 2,                       // 二级层叠
        coordinateSystem: 'cartesian2d',
        legendHoverLink: true,

        hoverAnimation: true,
        // stack: null
        // xAxisIndex: 0,
        // yAxisIndex: 0,

        // polarIndex: 0,

        // If clip the overflow value
        clipOverflow: true,
        // cursor: null,

        label: {
            position: 'top'
        },
        // itemStyle: {
        // },

        lineStyle: {
            width: 2,
            type: 'solid'
        },
        // areaStyle: {
            // origin of areaStyle. Valid values:
            // `'auto'/null/undefined`: from axisLine to data
            // `'start'`: from min to data
            // `'end'`: from data to max
            // origin: 'auto'
        // },
        // false, 'start', 'end', 'middle'
        step: false,

        // Disabled if step is true
        smooth: false,
        smoothMonotone: null,
        // 拐点图形类型
        symbol: 'emptyCircle',
        // 拐点图形大小
        symbolSize: 4,
        // 拐点图形旋转控制
        symbolRotate: null,

        // 是否显示 symbol, 只有在 tooltip hover 的时候显示
        showSymbol: true,
        // 标志图形默认只有主轴显示（随主轴标签间隔隐藏策略）
        showAllSymbol: false,

        // 是否连接断点
        connectNulls: false,

        // 数据过滤，'average', 'max', 'min', 'sum'
        sampling: 'none',

        animationEasing: 'linear',

        // Disable progressive
        progressive: 0,
        hoverLayerThreshold: Infinity
    }
});

// Symbol factory

/**
 * Triangle shape
 * @inner
 */
var Triangle = extendShape({
    type: 'triangle',
    shape: {
        cx: 0,
        cy: 0,
        width: 0,
        height: 0
    },
    buildPath: function (path, shape) {
        var cx = shape.cx;
        var cy = shape.cy;
        var width = shape.width / 2;
        var height = shape.height / 2;
        path.moveTo(cx, cy - height);
        path.lineTo(cx + width, cy + height);
        path.lineTo(cx - width, cy + height);
        path.closePath();
    }
});

/**
 * Diamond shape
 * @inner
 */
var Diamond = extendShape({
    type: 'diamond',
    shape: {
        cx: 0,
        cy: 0,
        width: 0,
        height: 0
    },
    buildPath: function (path, shape) {
        var cx = shape.cx;
        var cy = shape.cy;
        var width = shape.width / 2;
        var height = shape.height / 2;
        path.moveTo(cx, cy - height);
        path.lineTo(cx + width, cy);
        path.lineTo(cx, cy + height);
        path.lineTo(cx - width, cy);
        path.closePath();
    }
});

/**
 * Pin shape
 * @inner
 */
var Pin = extendShape({
    type: 'pin',
    shape: {
        // x, y on the cusp
        x: 0,
        y: 0,
        width: 0,
        height: 0
    },

    buildPath: function (path, shape) {
        var x = shape.x;
        var y = shape.y;
        var w = shape.width / 5 * 3;
        // Height must be larger than width
        var h = Math.max(w, shape.height);
        var r = w / 2;

        // Dist on y with tangent point and circle center
        var dy = r * r / (h - r);
        var cy = y - h + r + dy;
        var angle = Math.asin(dy / r);
        // Dist on x with tangent point and circle center
        var dx = Math.cos(angle) * r;

        var tanX = Math.sin(angle);
        var tanY = Math.cos(angle);

        var cpLen = r * 0.6;
        var cpLen2 = r * 0.7;

        path.moveTo(x - dx, cy + dy);

        path.arc(
            x, cy, r,
            Math.PI - angle,
            Math.PI * 2 + angle
        );
        path.bezierCurveTo(
            x + dx - tanX * cpLen, cy + dy + tanY * cpLen,
            x, y - cpLen2,
            x, y
        );
        path.bezierCurveTo(
            x, y - cpLen2,
            x - dx + tanX * cpLen, cy + dy + tanY * cpLen,
            x - dx, cy + dy
        );
        path.closePath();
    }
});

/**
 * Arrow shape
 * @inner
 */
var Arrow = extendShape({

    type: 'arrow',

    shape: {
        x: 0,
        y: 0,
        width: 0,
        height: 0
    },

    buildPath: function (ctx, shape) {
        var height = shape.height;
        var width = shape.width;
        var x = shape.x;
        var y = shape.y;
        var dx = width / 3 * 2;
        ctx.moveTo(x, y);
        ctx.lineTo(x + dx, y + height);
        ctx.lineTo(x, y + height / 4 * 3);
        ctx.lineTo(x - dx, y + height);
        ctx.lineTo(x, y);
        ctx.closePath();
    }
});

/**
 * Map of path contructors
 * @type {Object.<string, module:zrender/graphic/Path>}
 */
var symbolCtors = {

    line: Line,

    rect: Rect,

    roundRect: Rect,

    square: Rect,

    circle: Circle,

    diamond: Diamond,

    pin: Pin,

    arrow: Arrow,

    triangle: Triangle
};

var symbolShapeMakers = {

    line: function (x, y, w, h, shape) {
        // FIXME
        shape.x1 = x;
        shape.y1 = y + h / 2;
        shape.x2 = x + w;
        shape.y2 = y + h / 2;
    },

    rect: function (x, y, w, h, shape) {
        shape.x = x;
        shape.y = y;
        shape.width = w;
        shape.height = h;
    },

    roundRect: function (x, y, w, h, shape) {
        shape.x = x;
        shape.y = y;
        shape.width = w;
        shape.height = h;
        shape.r = Math.min(w, h) / 4;
    },

    square: function (x, y, w, h, shape) {
        var size = Math.min(w, h);
        shape.x = x;
        shape.y = y;
        shape.width = size;
        shape.height = size;
    },

    circle: function (x, y, w, h, shape) {
        // Put circle in the center of square
        shape.cx = x + w / 2;
        shape.cy = y + h / 2;
        shape.r = Math.min(w, h) / 2;
    },

    diamond: function (x, y, w, h, shape) {
        shape.cx = x + w / 2;
        shape.cy = y + h / 2;
        shape.width = w;
        shape.height = h;
    },

    pin: function (x, y, w, h, shape) {
        shape.x = x + w / 2;
        shape.y = y + h / 2;
        shape.width = w;
        shape.height = h;
    },

    arrow: function (x, y, w, h, shape) {
        shape.x = x + w / 2;
        shape.y = y + h / 2;
        shape.width = w;
        shape.height = h;
    },

    triangle: function (x, y, w, h, shape) {
        shape.cx = x + w / 2;
        shape.cy = y + h / 2;
        shape.width = w;
        shape.height = h;
    }
};

var symbolBuildProxies = {};
each$1(symbolCtors, function (Ctor, name) {
    symbolBuildProxies[name] = new Ctor();
});

var SymbolClz$2 = extendShape({

    type: 'symbol',

    shape: {
        symbolType: '',
        x: 0,
        y: 0,
        width: 0,
        height: 0
    },

    beforeBrush: function () {
        var style = this.style;
        var shape = this.shape;
        // FIXME
        if (shape.symbolType === 'pin' && style.textPosition === 'inside') {
            style.textPosition = ['50%', '40%'];
            style.textAlign = 'center';
            style.textVerticalAlign = 'middle';
        }
    },

    buildPath: function (ctx, shape, inBundle) {
        var symbolType = shape.symbolType;
        var proxySymbol = symbolBuildProxies[symbolType];
        if (shape.symbolType !== 'none') {
            if (!proxySymbol) {
                // Default rect
                symbolType = 'rect';
                proxySymbol = symbolBuildProxies[symbolType];
            }
            symbolShapeMakers[symbolType](
                shape.x, shape.y, shape.width, shape.height, proxySymbol.shape
            );
            proxySymbol.buildPath(ctx, proxySymbol.shape, inBundle);
        }
    }
});

// Provide setColor helper method to avoid determine if set the fill or stroke outside
function symbolPathSetColor(color, innerColor) {
    if (this.type !== 'image') {
        var symbolStyle = this.style;
        var symbolShape = this.shape;
        if (symbolShape && symbolShape.symbolType === 'line') {
            symbolStyle.stroke = color;
        }
        else if (this.__isEmptyBrush) {
            symbolStyle.stroke = color;
            symbolStyle.fill = innerColor || '#fff';
        }
        else {
            // FIXME 判断图形默认是填充还是描边，使用 onlyStroke ?
            symbolStyle.fill && (symbolStyle.fill = color);
            symbolStyle.stroke && (symbolStyle.stroke = color);
        }
        this.dirty(false);
    }
}

/**
 * Create a symbol element with given symbol configuration: shape, x, y, width, height, color
 * @param {string} symbolType
 * @param {number} x
 * @param {number} y
 * @param {number} w
 * @param {number} h
 * @param {string} color
 * @param {boolean} [keepAspect=false] whether to keep the ratio of w/h,
 *                            for path and image only.
 */
function createSymbol(symbolType, x, y, w, h, color, keepAspect) {
    // TODO Support image object, DynamicImage.

    var isEmpty = symbolType.indexOf('empty') === 0;
    if (isEmpty) {
        symbolType = symbolType.substr(5, 1).toLowerCase() + symbolType.substr(6);
    }
    var symbolPath;

    if (symbolType.indexOf('image://') === 0) {
        symbolPath = makeImage(
            symbolType.slice(8),
            new BoundingRect(x, y, w, h),
            keepAspect ? 'center' : 'cover'
        );
    }
    else if (symbolType.indexOf('path://') === 0) {
        symbolPath = makePath(
            symbolType.slice(7),
            {},
            new BoundingRect(x, y, w, h),
            keepAspect ? 'center' : 'cover'
        );
    }
    else {
        symbolPath = new SymbolClz$2({
            shape: {
                symbolType: symbolType,
                x: x,
                y: y,
                width: w,
                height: h
            }
        });
    }

    symbolPath.__isEmptyBrush = isEmpty;

    symbolPath.setColor = symbolPathSetColor;

    symbolPath.setColor(color);

    return symbolPath;
}

/**
 * @param {module:echarts/data/List} data
 * @param {number} dataIndex
 * @return {string} label string. Not null/undefined
 */
function getDefaultLabel(data, dataIndex) {
    var labelDims = data.mapDimension('defaultedLabel', true);
    var len = labelDims.length;

    // Simple optimization (in lots of cases, label dims length is 1)
    if (len === 1) {
        return retrieveRawValue(data, dataIndex, labelDims[0]);
    }
    else if (len) {
        var vals = [];
        for (var i = 0; i < labelDims.length; i++) {
            var val = retrieveRawValue(data, dataIndex, labelDims[i]);
            vals.push(val);
        }
        return vals.join(' ');
    }
}

/**
 * @module echarts/chart/helper/Symbol
 */

function getSymbolSize(data, idx) {
    var symbolSize = data.getItemVisual(idx, 'symbolSize');
    return symbolSize instanceof Array
        ? symbolSize.slice()
        : [+symbolSize, +symbolSize];
}

function getScale(symbolSize) {
    return [symbolSize[0] / 2, symbolSize[1] / 2];
}

/**
 * @constructor
 * @alias {module:echarts/chart/helper/Symbol}
 * @param {module:echarts/data/List} data
 * @param {number} idx
 * @extends {module:zrender/graphic/Group}
 */
function SymbolClz(data, idx, seriesScope) {
    Group.call(this);
    this.updateData(data, idx, seriesScope);
}

var symbolProto = SymbolClz.prototype;

function driftSymbol(dx, dy) {
    this.parent.drift(dx, dy);
}

symbolProto._createSymbol = function (symbolType, data, idx, symbolSize) {
    // Remove paths created before
    this.removeAll();

    var color = data.getItemVisual(idx, 'color');

    // var symbolPath = createSymbol(
    //     symbolType, -0.5, -0.5, 1, 1, color
    // );
    // If width/height are set too small (e.g., set to 1) on ios10
    // and macOS Sierra, a circle stroke become a rect, no matter what
    // the scale is set. So we set width/height as 2. See #4150.
    var symbolPath = createSymbol(
        symbolType, -1, -1, 2, 2, color
    );

    symbolPath.attr({
        z2: 100,
        culling: true,
        scale: getScale(symbolSize)
    });
    // Rewrite drift method
    symbolPath.drift = driftSymbol;

    this._symbolType = symbolType;

    this.add(symbolPath);
};

/**
 * Stop animation
 * @param {boolean} toLastFrame
 */
symbolProto.stopSymbolAnimation = function (toLastFrame) {
    this.childAt(0).stopAnimation(toLastFrame);
};

/**
 * FIXME:
 * Caution: This method breaks the encapsulation of this module,
 * but it indeed brings convenience. So do not use the method
 * unless you detailedly know all the implements of `Symbol`,
 * especially animation.
 *
 * Get symbol path element.
 */
symbolProto.getSymbolPath = function () {
    return this.childAt(0);
};

/**
 * Get scale(aka, current symbol size).
 * Including the change caused by animation
 */
symbolProto.getScale = function () {
    return this.childAt(0).scale;
};

/**
 * Highlight symbol
 */
symbolProto.highlight = function () {
    this.childAt(0).trigger('emphasis');
};

/**
 * Downplay symbol
 */
symbolProto.downplay = function () {
    this.childAt(0).trigger('normal');
};

/**
 * @param {number} zlevel
 * @param {number} z
 */
symbolProto.setZ = function (zlevel, z) {
    var symbolPath = this.childAt(0);
    symbolPath.zlevel = zlevel;
    symbolPath.z = z;
};

symbolProto.setDraggable = function (draggable) {
    var symbolPath = this.childAt(0);
    symbolPath.draggable = draggable;
    symbolPath.cursor = draggable ? 'move' : 'pointer';
};

/**
 * Update symbol properties
 * @param {module:echarts/data/List} data
 * @param {number} idx
 * @param {Object} [seriesScope]
 * @param {Object} [seriesScope.itemStyle]
 * @param {Object} [seriesScope.hoverItemStyle]
 * @param {Object} [seriesScope.symbolRotate]
 * @param {Object} [seriesScope.symbolOffset]
 * @param {module:echarts/model/Model} [seriesScope.labelModel]
 * @param {module:echarts/model/Model} [seriesScope.hoverLabelModel]
 * @param {boolean} [seriesScope.hoverAnimation]
 * @param {Object} [seriesScope.cursorStyle]
 * @param {module:echarts/model/Model} [seriesScope.itemModel]
 * @param {string} [seriesScope.symbolInnerColor]
 * @param {Object} [seriesScope.fadeIn=false]
 */
symbolProto.updateData = function (data, idx, seriesScope) {
    this.silent = false;

    var symbolType = data.getItemVisual(idx, 'symbol') || 'circle';
    var seriesModel = data.hostModel;
    var symbolSize = getSymbolSize(data, idx);
    var isInit = symbolType !== this._symbolType;

    if (isInit) {
        this._createSymbol(symbolType, data, idx, symbolSize);
    }
    else {
        var symbolPath = this.childAt(0);
        symbolPath.silent = false;
        updateProps(symbolPath, {
            scale: getScale(symbolSize)
        }, seriesModel, idx);
    }

    this._updateCommon(data, idx, symbolSize, seriesScope);

    if (isInit) {
        var symbolPath = this.childAt(0);
        var fadeIn = seriesScope && seriesScope.fadeIn;

        var target = {scale: symbolPath.scale.slice()};
        fadeIn && (target.style = {opacity: symbolPath.style.opacity});

        symbolPath.scale = [0, 0];
        fadeIn && (symbolPath.style.opacity = 0);

        initProps(symbolPath, target, seriesModel, idx);
    }

    this._seriesModel = seriesModel;
};

// Update common properties
var normalStyleAccessPath = ['itemStyle'];
var emphasisStyleAccessPath = ['emphasis', 'itemStyle'];
var normalLabelAccessPath = ['label'];
var emphasisLabelAccessPath = ['emphasis', 'label'];

/**
 * @param {module:echarts/data/List} data
 * @param {number} idx
 * @param {Array.<number>} symbolSize
 * @param {Object} [seriesScope]
 */
symbolProto._updateCommon = function (data, idx, symbolSize, seriesScope) {
    var symbolPath = this.childAt(0);
    var seriesModel = data.hostModel;
    var color = data.getItemVisual(idx, 'color');

    // Reset style
    if (symbolPath.type !== 'image') {
        symbolPath.useStyle({
            strokeNoScale: true
        });
    }

    var itemStyle = seriesScope && seriesScope.itemStyle;
    var hoverItemStyle = seriesScope && seriesScope.hoverItemStyle;
    var symbolRotate = seriesScope && seriesScope.symbolRotate;
    var symbolOffset = seriesScope && seriesScope.symbolOffset;
    var labelModel = seriesScope && seriesScope.labelModel;
    var hoverLabelModel = seriesScope && seriesScope.hoverLabelModel;
    var hoverAnimation = seriesScope && seriesScope.hoverAnimation;
    var cursorStyle = seriesScope && seriesScope.cursorStyle;

    if (!seriesScope || data.hasItemOption) {
        var itemModel = (seriesScope && seriesScope.itemModel)
            ? seriesScope.itemModel : data.getItemModel(idx);

        // Color must be excluded.
        // Because symbol provide setColor individually to set fill and stroke
        itemStyle = itemModel.getModel(normalStyleAccessPath).getItemStyle(['color']);
        hoverItemStyle = itemModel.getModel(emphasisStyleAccessPath).getItemStyle();

        symbolRotate = itemModel.getShallow('symbolRotate');
        symbolOffset = itemModel.getShallow('symbolOffset');

        labelModel = itemModel.getModel(normalLabelAccessPath);
        hoverLabelModel = itemModel.getModel(emphasisLabelAccessPath);
        hoverAnimation = itemModel.getShallow('hoverAnimation');
        cursorStyle = itemModel.getShallow('cursor');
    }
    else {
        hoverItemStyle = extend({}, hoverItemStyle);
    }

    var elStyle = symbolPath.style;

    symbolPath.attr('rotation', (symbolRotate || 0) * Math.PI / 180 || 0);

    if (symbolOffset) {
        symbolPath.attr('position', [
            parsePercent$1(symbolOffset[0], symbolSize[0]),
            parsePercent$1(symbolOffset[1], symbolSize[1])
        ]);
    }

    cursorStyle && symbolPath.attr('cursor', cursorStyle);

    // PENDING setColor before setStyle!!!
    symbolPath.setColor(color, seriesScope && seriesScope.symbolInnerColor);

    symbolPath.setStyle(itemStyle);

    var opacity = data.getItemVisual(idx, 'opacity');
    if (opacity != null) {
        elStyle.opacity = opacity;
    }

    var useNameLabel = seriesScope && seriesScope.useNameLabel;

    setLabelStyle(
        elStyle, hoverItemStyle, labelModel, hoverLabelModel,
        {
            labelFetcher: seriesModel,
            labelDataIndex: idx,
            defaultText: getLabelDefaultText,
            isRectText: true,
            autoColor: color
        }
    );

    // Do not execute util needed.
    function getLabelDefaultText(idx, opt) {
        return useNameLabel ? data.getName(idx) : getDefaultLabel(data, idx);
    }

    symbolPath.off('mouseover')
        .off('mouseout')
        .off('emphasis')
        .off('normal');

    symbolPath.hoverStyle = hoverItemStyle;

    // FIXME
    // Do not use symbol.trigger('emphasis'), but use symbol.highlight() instead.
    setHoverStyle(symbolPath);

    var scale = getScale(symbolSize);

    if (hoverAnimation && seriesModel.isAnimationEnabled()) {
        var onEmphasis = function() {
            // Do not support this hover animation util some scenario required.
            // Animation can only be supported in hover layer when using `el.incremetal`.
            if (this.incremental) {
                return;
            }
            var ratio = scale[1] / scale[0];
            this.animateTo({
                scale: [
                    Math.max(scale[0] * 1.1, scale[0] + 3),
                    Math.max(scale[1] * 1.1, scale[1] + 3 * ratio)
                ]
            }, 400, 'elasticOut');
        };
        var onNormal = function() {
            if (this.incremental) {
                return;
            }
            this.animateTo({
                scale: scale
            }, 400, 'elasticOut');
        };
        symbolPath.on('mouseover', onEmphasis)
            .on('mouseout', onNormal)
            .on('emphasis', onEmphasis)
            .on('normal', onNormal);
    }
};

/**
 * @param {Function} cb
 * @param {Object} [opt]
 * @param {Object} [opt.keepLabel=true]
 */
symbolProto.fadeOut = function (cb, opt) {
    var symbolPath = this.childAt(0);
    // Avoid mistaken hover when fading out
    this.silent = symbolPath.silent = true;
    // Not show text when animating
    !(opt && opt.keepLabel) && (symbolPath.style.text = null);

    updateProps(
        symbolPath,
        {
            style: {opacity: 0},
            scale: [0, 0]
        },
        this._seriesModel,
        this.dataIndex,
        cb
    );
};

inherits(SymbolClz, Group);

/**
 * @module echarts/chart/helper/SymbolDraw
 */

/**
 * @constructor
 * @alias module:echarts/chart/helper/SymbolDraw
 * @param {module:zrender/graphic/Group} [symbolCtor]
 */
function SymbolDraw(symbolCtor) {
    this.group = new Group();

    this._symbolCtor = symbolCtor || SymbolClz;
}

var symbolDrawProto = SymbolDraw.prototype;

function symbolNeedsDraw(data, point, idx, opt) {
    return point && !isNaN(point[0]) && !isNaN(point[1])
        && !(opt.isIgnore && opt.isIgnore(idx))
        // We do not set clipShape on group, because it will
        // cut part of the symbol element shape.
        && !(opt.clipShape && !opt.clipShape.contain(point[0], point[1]))
        && data.getItemVisual(idx, 'symbol') !== 'none';
}
/**
 * Update symbols draw by new data
 * @param {module:echarts/data/List} data
 * @param {Object} [opt] Or isIgnore
 * @param {Function} [opt.isIgnore]
 * @param {Object} [opt.clipShape]
 */
symbolDrawProto.updateData = function (data, opt) {
    opt = normalizeUpdateOpt(opt);

    var group = this.group;
    var seriesModel = data.hostModel;
    var oldData = this._data;
    var SymbolCtor = this._symbolCtor;

    var seriesScope = makeSeriesScope(data);

    // There is no oldLineData only when first rendering or switching from
    // stream mode to normal mode, where previous elements should be removed.
    if (!oldData) {
        group.removeAll();
    }

    data.diff(oldData)
        .add(function (newIdx) {
            var point = data.getItemLayout(newIdx);
            if (symbolNeedsDraw(data, point, newIdx, opt)) {
                var symbolEl = new SymbolCtor(data, newIdx, seriesScope);
                symbolEl.attr('position', point);
                data.setItemGraphicEl(newIdx, symbolEl);
                group.add(symbolEl);
            }
        })
        .update(function (newIdx, oldIdx) {
            var symbolEl = oldData.getItemGraphicEl(oldIdx);
            var point = data.getItemLayout(newIdx);
            if (!symbolNeedsDraw(data, point, newIdx, opt)) {
                group.remove(symbolEl);
                return;
            }
            if (!symbolEl) {
                symbolEl = new SymbolCtor(data, newIdx);
                symbolEl.attr('position', point);
            }
            else {
                symbolEl.updateData(data, newIdx, seriesScope);
                updateProps(symbolEl, {
                    position: point
                }, seriesModel);
            }

            // Add back
            group.add(symbolEl);

            data.setItemGraphicEl(newIdx, symbolEl);
        })
        .remove(function (oldIdx) {
            var el = oldData.getItemGraphicEl(oldIdx);
            el && el.fadeOut(function () {
                group.remove(el);
            });
        })
        .execute();

    this._data = data;
};

symbolDrawProto.isPersistent = function () {
    return true;
};

symbolDrawProto.updateLayout = function () {
    var data = this._data;
    if (data) {
        // Not use animation
        data.eachItemGraphicEl(function (el, idx) {
            var point = data.getItemLayout(idx);
            el.attr('position', point);
        });
    }
};

symbolDrawProto.incrementalPrepareUpdate = function (data) {
    this._seriesScope = makeSeriesScope(data);
    this._data = null;
    this.group.removeAll();
};

/**
 * Update symbols draw by new data
 * @param {module:echarts/data/List} data
 * @param {Object} [opt] Or isIgnore
 * @param {Function} [opt.isIgnore]
 * @param {Object} [opt.clipShape]
 */
symbolDrawProto.incrementalUpdate = function (taskParams, data, opt) {
    opt = normalizeUpdateOpt(opt);

    function updateIncrementalAndHover(el) {
        if (!el.isGroup) {
            el.incremental = el.useHoverLayer = true;
        }
    }
    for (var idx = taskParams.start; idx < taskParams.end; idx++) {
        var point = data.getItemLayout(idx);
        if (symbolNeedsDraw(data, point, idx, opt)) {
            var el = new this._symbolCtor(data, idx, this._seriesScope);
            el.traverse(updateIncrementalAndHover);
            el.attr('position', point);
            this.group.add(el);
            data.setItemGraphicEl(idx, el);
        }
    }
};

function normalizeUpdateOpt(opt) {
    if (opt != null && !isObject$1(opt)) {
        opt = {isIgnore: opt};
    }
    return opt || {};
}

symbolDrawProto.remove = function (enableAnimation) {
    var group = this.group;
    var data = this._data;
    // Incremental model do not have this._data.
    if (data && enableAnimation) {
        data.eachItemGraphicEl(function (el) {
            el.fadeOut(function () {
                group.remove(el);
            });
        });
    }
    else {
        group.removeAll();
    }
};

function makeSeriesScope(data) {
    var seriesModel = data.hostModel;
    return {
        itemStyle: seriesModel.getModel('itemStyle').getItemStyle(['color']),
        hoverItemStyle: seriesModel.getModel('emphasis.itemStyle').getItemStyle(),
        symbolRotate: seriesModel.get('symbolRotate'),
        symbolOffset: seriesModel.get('symbolOffset'),
        hoverAnimation: seriesModel.get('hoverAnimation'),
        labelModel: seriesModel.getModel('label'),
        hoverLabelModel: seriesModel.getModel('emphasis.label'),
        cursorStyle: seriesModel.get('cursor')
    };
}

/**
 * @param {Object} coordSys
 * @param {module:echarts/data/List} data
 * @param {string} valueOrigin lineSeries.option.areaStyle.origin
 */
function prepareDataCoordInfo(coordSys, data, valueOrigin) {
    var baseAxis = coordSys.getBaseAxis();
    var valueAxis = coordSys.getOtherAxis(baseAxis);
    var valueStart = getValueStart(valueAxis, valueOrigin);

    var baseAxisDim = baseAxis.dim;
    var valueAxisDim = valueAxis.dim;
    var valueDim = data.mapDimension(valueAxisDim);
    var baseDim = data.mapDimension(baseAxisDim);
    var baseDataOffset = valueAxisDim === 'x' || valueAxisDim === 'radius' ? 1 : 0;

    var stacked = isDimensionStacked(data, valueDim, baseDim);

    var dataDimsForPoint = map(coordSys.dimensions, function (coordDim) {
        return data.mapDimension(coordDim);
    });

    return {
        dataDimsForPoint: dataDimsForPoint,
        valueStart: valueStart,
        valueAxisDim: valueAxisDim,
        baseAxisDim: baseAxisDim,
        stacked: stacked,
        valueDim: valueDim,
        baseDim: baseDim,
        baseDataOffset: baseDataOffset,
        stackedOverDimension: data.getCalculationInfo('stackedOverDimension')
    };
}

function getValueStart(valueAxis, valueOrigin) {
    var valueStart = 0;
    var extent = valueAxis.scale.getExtent();

    if (valueOrigin === 'start') {
        valueStart = extent[0];
    }
    else if (valueOrigin === 'end') {
        valueStart = extent[1];
    }
    // auto
    else {
        // Both positive
        if (extent[0] > 0) {
            valueStart = extent[0];
        }
        // Both negative
        else if (extent[1] < 0) {
            valueStart = extent[1];
        }
        // If is one positive, and one negative, onZero shall be true
    }

    return valueStart;
}

function getStackedOnPoint(dataCoordInfo, coordSys, data, idx) {
    var value = NaN;
    if (dataCoordInfo.stacked) {
        value = data.get(data.getCalculationInfo('stackedOverDimension'), idx);
    }
    if (isNaN(value)) {
        value = dataCoordInfo.valueStart;
    }

    var baseDataOffset = dataCoordInfo.baseDataOffset;
    var stackedData = [];
    stackedData[baseDataOffset] = data.get(dataCoordInfo.baseDim, idx);
    stackedData[1 - baseDataOffset] = value;

    return coordSys.dataToPoint(stackedData);
}

// var arrayDiff = require('zrender/src/core/arrayDiff');
// 'zrender/src/core/arrayDiff' has been used before, but it did
// not do well in performance when roam with fixed dataZoom window.

// function convertToIntId(newIdList, oldIdList) {
//     // Generate int id instead of string id.
//     // Compare string maybe slow in score function of arrDiff

//     // Assume id in idList are all unique
//     var idIndicesMap = {};
//     var idx = 0;
//     for (var i = 0; i < newIdList.length; i++) {
//         idIndicesMap[newIdList[i]] = idx;
//         newIdList[i] = idx++;
//     }
//     for (var i = 0; i < oldIdList.length; i++) {
//         var oldId = oldIdList[i];
//         // Same with newIdList
//         if (idIndicesMap[oldId]) {
//             oldIdList[i] = idIndicesMap[oldId];
//         }
//         else {
//             oldIdList[i] = idx++;
//         }
//     }
// }

function diffData(oldData, newData) {
    var diffResult = [];

    newData.diff(oldData)
        .add(function (idx) {
            diffResult.push({cmd: '+', idx: idx});
        })
        .update(function (newIdx, oldIdx) {
            diffResult.push({cmd: '=', idx: oldIdx, idx1: newIdx});
        })
        .remove(function (idx) {
            diffResult.push({cmd: '-', idx: idx});
        })
        .execute();

    return diffResult;
}

var lineAnimationDiff = function (
    oldData, newData,
    oldStackedOnPoints, newStackedOnPoints,
    oldCoordSys, newCoordSys,
    oldValueOrigin, newValueOrigin
) {
    var diff = diffData(oldData, newData);

    // var newIdList = newData.mapArray(newData.getId);
    // var oldIdList = oldData.mapArray(oldData.getId);

    // convertToIntId(newIdList, oldIdList);

    // // FIXME One data ?
    // diff = arrayDiff(oldIdList, newIdList);

    var currPoints = [];
    var nextPoints = [];
    // Points for stacking base line
    var currStackedPoints = [];
    var nextStackedPoints = [];

    var status = [];
    var sortedIndices = [];
    var rawIndices = [];

    var newDataOldCoordInfo = prepareDataCoordInfo(oldCoordSys, newData, oldValueOrigin);
    var oldDataNewCoordInfo = prepareDataCoordInfo(newCoordSys, oldData, newValueOrigin);

    for (var i = 0; i < diff.length; i++) {
        var diffItem = diff[i];
        var pointAdded = true;

        // FIXME, animation is not so perfect when dataZoom window moves fast
        // Which is in case remvoing or add more than one data in the tail or head
        switch (diffItem.cmd) {
            case '=':
                var currentPt = oldData.getItemLayout(diffItem.idx);
                var nextPt = newData.getItemLayout(diffItem.idx1);
                // If previous data is NaN, use next point directly
                if (isNaN(currentPt[0]) || isNaN(currentPt[1])) {
                    currentPt = nextPt.slice();
                }
                currPoints.push(currentPt);
                nextPoints.push(nextPt);

                currStackedPoints.push(oldStackedOnPoints[diffItem.idx]);
                nextStackedPoints.push(newStackedOnPoints[diffItem.idx1]);

                rawIndices.push(newData.getRawIndex(diffItem.idx1));
                break;
            case '+':
                var idx = diffItem.idx;
                currPoints.push(
                    oldCoordSys.dataToPoint([
                        newData.get(newDataOldCoordInfo.dataDimsForPoint[0], idx),
                        newData.get(newDataOldCoordInfo.dataDimsForPoint[1], idx)
                    ])
                );

                nextPoints.push(newData.getItemLayout(idx).slice());

                currStackedPoints.push(
                    getStackedOnPoint(newDataOldCoordInfo, oldCoordSys, newData, idx)
                );
                nextStackedPoints.push(newStackedOnPoints[idx]);

                rawIndices.push(newData.getRawIndex(idx));
                break;
            case '-':
                var idx = diffItem.idx;
                var rawIndex = oldData.getRawIndex(idx);
                // Data is replaced. In the case of dynamic data queue
                // FIXME FIXME FIXME
                if (rawIndex !== idx) {
                    currPoints.push(oldData.getItemLayout(idx));
                    nextPoints.push(newCoordSys.dataToPoint([
                        oldData.get(oldDataNewCoordInfo.dataDimsForPoint[0], idx),
                        oldData.get(oldDataNewCoordInfo.dataDimsForPoint[1], idx)
                    ]));

                    currStackedPoints.push(oldStackedOnPoints[idx]);
                    nextStackedPoints.push(
                        getStackedOnPoint(oldDataNewCoordInfo, newCoordSys, oldData, idx)
                    );

                    rawIndices.push(rawIndex);
                }
                else {
                    pointAdded = false;
                }
        }

        // Original indices
        if (pointAdded) {
            status.push(diffItem);
            sortedIndices.push(sortedIndices.length);
        }
    }

    // Diff result may be crossed if all items are changed
    // Sort by data index
    sortedIndices.sort(function (a, b) {
        return rawIndices[a] - rawIndices[b];
    });

    var sortedCurrPoints = [];
    var sortedNextPoints = [];

    var sortedCurrStackedPoints = [];
    var sortedNextStackedPoints = [];

    var sortedStatus = [];
    for (var i = 0; i < sortedIndices.length; i++) {
        var idx = sortedIndices[i];
        sortedCurrPoints[i] = currPoints[idx];
        sortedNextPoints[i] = nextPoints[idx];

        sortedCurrStackedPoints[i] = currStackedPoints[idx];
        sortedNextStackedPoints[i] = nextStackedPoints[idx];

        sortedStatus[i] = status[idx];
    }

    return {
        current: sortedCurrPoints,
        next: sortedNextPoints,

        stackedOnCurrent: sortedCurrStackedPoints,
        stackedOnNext: sortedNextStackedPoints,

        status: sortedStatus
    };
};

// Poly path support NaN point

var vec2Min = min;
var vec2Max = max;

var scaleAndAdd$1 = scaleAndAdd;
var v2Copy = copy;

// Temporary variable
var v = [];
var cp0 = [];
var cp1 = [];

function isPointNull(p) {
    return isNaN(p[0]) || isNaN(p[1]);
}

function drawSegment(
    ctx, points, start, segLen, allLen,
    dir, smoothMin, smoothMax, smooth, smoothMonotone, connectNulls
) {
    if (smoothMonotone == null) {
        if (isMono(points, 'x')) {
            return drawMono(ctx, points, start, segLen, allLen,
                dir, smoothMin, smoothMax, smooth, 'x', connectNulls);
        }
        else if (isMono(points, 'y')) {
            return drawMono(ctx, points, start, segLen, allLen,
                dir, smoothMin, smoothMax, smooth, 'y', connectNulls);
        }
        else {
            return drawNonMono.apply(this, arguments);
        }
    }
    else if (smoothMonotone !== 'none' && isMono(points, smoothMonotone)) {
        return drawMono.apply(this, arguments);
    }
    else {
        return drawNonMono.apply(this, arguments);
    }
}

/**
 * Check if points is in monotone.
 *
 * @param {number[][]} points         Array of points which is in [x, y] form
 * @param {string}     smoothMonotone 'x', 'y', or 'none', stating for which
 *                                    dimension that is checking.
 *                                    If is 'none', `drawNonMono` should be
 *                                    called.
 *                                    If is undefined, either being monotone
 *                                    in 'x' or 'y' will call `drawMono`.
 */
function isMono(points, smoothMonotone) {
    if (points.length <= 1) {
        return true;
    }

    var dim = smoothMonotone === 'x' ? 0 : 1;
    var last = points[0][dim];
    var lastDiff = 0;
    for (var i = 1; i < points.length; ++i) {
        var diff = points[i][dim] - last;
        if (!isNaN(diff) && !isNaN(lastDiff)
            && diff !== 0 && lastDiff !== 0
            && ((diff >= 0) !== (lastDiff >= 0))
        ) {
            return false;
        }
        if (!isNaN(diff) && diff !== 0) {
            lastDiff = diff;
            last = points[i][dim];
        }
    }
    return true;
}

/**
 * Draw smoothed line in monotone, in which only vertical or horizontal bezier
 * control points will be used. This should be used when points are monotone
 * either in x or y dimension.
 */
function drawMono(
    ctx, points, start, segLen, allLen,
    dir, smoothMin, smoothMax, smooth, smoothMonotone, connectNulls
) {
    var prevIdx = 0;
    var idx = start;
    for (var k = 0; k < segLen; k++) {
        var p = points[idx];
        if (idx >= allLen || idx < 0) {
            break;
        }
        if (isPointNull(p)) {
            if (connectNulls) {
                idx += dir;
                continue;
            }
            break;
        }

        if (idx === start) {
            ctx[dir > 0 ? 'moveTo' : 'lineTo'](p[0], p[1]);
        }
        else {
            if (smooth > 0) {
                var prevP = points[prevIdx];
                var dim = smoothMonotone === 'y' ? 1 : 0;

                // Length of control point to p, either in x or y, but not both
                var ctrlLen = (p[dim] - prevP[dim]) * smooth;

                v2Copy(cp0, prevP);
                cp0[dim] = prevP[dim] + ctrlLen;

                v2Copy(cp1, p);
                cp1[dim] = p[dim] - ctrlLen;

                ctx.bezierCurveTo(
                    cp0[0], cp0[1],
                    cp1[0], cp1[1],
                    p[0], p[1]
                );
            }
            else {
                ctx.lineTo(p[0], p[1]);
            }
        }

        prevIdx = idx;
        idx += dir;
    }

    return k;
}

/**
 * Draw smoothed line in non-monotone, in may cause undesired curve in extreme
 * situations. This should be used when points are non-monotone neither in x or
 * y dimension.
 */
function drawNonMono(
    ctx, points, start, segLen, allLen,
    dir, smoothMin, smoothMax, smooth, smoothMonotone, connectNulls
) {
    var prevIdx = 0;
    var idx = start;
    for (var k = 0; k < segLen; k++) {
        var p = points[idx];
        if (idx >= allLen || idx < 0) {
            break;
        }
        if (isPointNull(p)) {
            if (connectNulls) {
                idx += dir;
                continue;
            }
            break;
        }

        if (idx === start) {
            ctx[dir > 0 ? 'moveTo' : 'lineTo'](p[0], p[1]);
            v2Copy(cp0, p);
        }
        else {
            if (smooth > 0) {
                var nextIdx = idx + dir;
                var nextP = points[nextIdx];
                if (connectNulls) {
                    // Find next point not null
                    while (nextP && isPointNull(points[nextIdx])) {
                        nextIdx += dir;
                        nextP = points[nextIdx];
                    }
                }

                var ratioNextSeg = 0.5;
                var prevP = points[prevIdx];
                var nextP = points[nextIdx];
                // Last point
                if (!nextP || isPointNull(nextP)) {
                    v2Copy(cp1, p);
                }
                else {
                    // If next data is null in not connect case
                    if (isPointNull(nextP) && !connectNulls) {
                        nextP = p;
                    }

                    sub(v, nextP, prevP);

                    var lenPrevSeg;
                    var lenNextSeg;
                    if (smoothMonotone === 'x' || smoothMonotone === 'y') {
                        var dim = smoothMonotone === 'x' ? 0 : 1;
                        lenPrevSeg = Math.abs(p[dim] - prevP[dim]);
                        lenNextSeg = Math.abs(p[dim] - nextP[dim]);
                    }
                    else {
                        lenPrevSeg = dist(p, prevP);
                        lenNextSeg = dist(p, nextP);
                    }

                    // Use ratio of seg length
                    ratioNextSeg = lenNextSeg / (lenNextSeg + lenPrevSeg);

                    scaleAndAdd$1(cp1, p, v, -smooth * (1 - ratioNextSeg));
                }
                // Smooth constraint
                vec2Min(cp0, cp0, smoothMax);
                vec2Max(cp0, cp0, smoothMin);
                vec2Min(cp1, cp1, smoothMax);
                vec2Max(cp1, cp1, smoothMin);

                ctx.bezierCurveTo(
                    cp0[0], cp0[1],
                    cp1[0], cp1[1],
                    p[0], p[1]
                );
                // cp0 of next segment
                scaleAndAdd$1(cp0, p, v, smooth * ratioNextSeg);
            }
            else {
                ctx.lineTo(p[0], p[1]);
            }
        }

        prevIdx = idx;
        idx += dir;
    }

    return k;
}

function getBoundingBox(points, smoothConstraint) {
    var ptMin = [Infinity, Infinity];
    var ptMax = [-Infinity, -Infinity];
    if (smoothConstraint) {
        for (var i = 0; i < points.length; i++) {
            var pt = points[i];
            if (pt[0] < ptMin[0]) { ptMin[0] = pt[0]; }
            if (pt[1] < ptMin[1]) { ptMin[1] = pt[1]; }
            if (pt[0] > ptMax[0]) { ptMax[0] = pt[0]; }
            if (pt[1] > ptMax[1]) { ptMax[1] = pt[1]; }
        }
    }
    return {
        min: smoothConstraint ? ptMin : ptMax,
        max: smoothConstraint ? ptMax : ptMin
    };
}

var Polyline$1 = Path.extend({

    type: 'ec-polyline',

    shape: {
        points: [],

        smooth: 0,

        smoothConstraint: true,

        smoothMonotone: null,

        connectNulls: false
    },

    style: {
        fill: null,

        stroke: '#000'
    },

    brush: fixClipWithShadow(Path.prototype.brush),

    buildPath: function (ctx, shape) {
        var points = shape.points;

        var i = 0;
        var len$$1 = points.length;

        var result = getBoundingBox(points, shape.smoothConstraint);

        if (shape.connectNulls) {
            // Must remove first and last null values avoid draw error in polygon
            for (; len$$1 > 0; len$$1--) {
                if (!isPointNull(points[len$$1 - 1])) {
                    break;
                }
            }
            for (; i < len$$1; i++) {
                if (!isPointNull(points[i])) {
                    break;
                }
            }
        }
        while (i < len$$1) {
            i += drawSegment(
                ctx, points, i, len$$1, len$$1,
                1, result.min, result.max, shape.smooth,
                shape.smoothMonotone, shape.connectNulls
            ) + 1;
        }
    }
});

var Polygon$1 = Path.extend({

    type: 'ec-polygon',

    shape: {
        points: [],

        // Offset between stacked base points and points
        stackedOnPoints: [],

        smooth: 0,

        stackedOnSmooth: 0,

        smoothConstraint: true,

        smoothMonotone: null,

        connectNulls: false
    },

    brush: fixClipWithShadow(Path.prototype.brush),

    buildPath: function (ctx, shape) {
        var points = shape.points;
        var stackedOnPoints = shape.stackedOnPoints;

        var i = 0;
        var len$$1 = points.length;
        var smoothMonotone = shape.smoothMonotone;
        var bbox = getBoundingBox(points, shape.smoothConstraint);
        var stackedOnBBox = getBoundingBox(stackedOnPoints, shape.smoothConstraint);

        if (shape.connectNulls) {
            // Must remove first and last null values avoid draw error in polygon
            for (; len$$1 > 0; len$$1--) {
                if (!isPointNull(points[len$$1 - 1])) {
                    break;
                }
            }
            for (; i < len$$1; i++) {
                if (!isPointNull(points[i])) {
                    break;
                }
            }
        }
        while (i < len$$1) {
            var k = drawSegment(
                ctx, points, i, len$$1, len$$1,
                1, bbox.min, bbox.max, shape.smooth,
                smoothMonotone, shape.connectNulls
            );
            drawSegment(
                ctx, stackedOnPoints, i + k - 1, k, len$$1,
                -1, stackedOnBBox.min, stackedOnBBox.max, shape.stackedOnSmooth,
                smoothMonotone, shape.connectNulls
            );
            i += k + 1;

            ctx.closePath();
        }
    }
});

// FIXME step not support polar

function isPointsSame(points1, points2) {
    if (points1.length !== points2.length) {
        return;
    }
    for (var i = 0; i < points1.length; i++) {
        var p1 = points1[i];
        var p2 = points2[i];
        if (p1[0] !== p2[0] || p1[1] !== p2[1]) {
            return;
        }
    }
    return true;
}

function getSmooth(smooth) {
    return typeof (smooth) === 'number' ? smooth : (smooth ? 0.5 : 0);
}

function getAxisExtentWithGap(axis) {
    var extent = axis.getGlobalExtent();
    if (axis.onBand) {
        // Remove extra 1px to avoid line miter in clipped edge
        var halfBandWidth = axis.getBandWidth() / 2 - 1;
        var dir = extent[1] > extent[0] ? 1 : -1;
        extent[0] += dir * halfBandWidth;
        extent[1] -= dir * halfBandWidth;
    }
    return extent;
}

/**
 * @param {module:echarts/coord/cartesian/Cartesian2D|module:echarts/coord/polar/Polar} coordSys
 * @param {module:echarts/data/List} data
 * @param {Object} dataCoordInfo
 * @param {Array.<Array.<number>>} points
 */
function getStackedOnPoints(coordSys, data, dataCoordInfo) {
    if (!dataCoordInfo.valueDim) {
        return [];
    }

    var points = [];
    for (var idx = 0, len = data.count(); idx < len; idx++) {
        points.push(getStackedOnPoint(dataCoordInfo, coordSys, data, idx));
    }

    return points;
}

function createGridClipShape(cartesian, hasAnimation, seriesModel) {
    var xExtent = getAxisExtentWithGap(cartesian.getAxis('x'));
    var yExtent = getAxisExtentWithGap(cartesian.getAxis('y'));
    var isHorizontal = cartesian.getBaseAxis().isHorizontal();

    var x = Math.min(xExtent[0], xExtent[1]);
    var y = Math.min(yExtent[0], yExtent[1]);
    var width = Math.max(xExtent[0], xExtent[1]) - x;
    var height = Math.max(yExtent[0], yExtent[1]) - y;
    var lineWidth = seriesModel.get('lineStyle.width') || 2;
    // Expand clip shape to avoid clipping when line value exceeds axis
    var expandSize = seriesModel.get('clipOverflow') ? lineWidth / 2 : Math.max(width, height);
    if (isHorizontal) {
        y -= expandSize;
        height += expandSize * 2;
    }
    else {
        x -= expandSize;
        width += expandSize * 2;
    }

    var clipPath = new Rect({
        shape: {
            x: x,
            y: y,
            width: width,
            height: height
        }
    });

    if (hasAnimation) {
        clipPath.shape[isHorizontal ? 'width' : 'height'] = 0;
        initProps(clipPath, {
            shape: {
                width: width,
                height: height
            }
        }, seriesModel);
    }

    return clipPath;
}

function createPolarClipShape(polar, hasAnimation, seriesModel) {
    var angleAxis = polar.getAngleAxis();
    var radiusAxis = polar.getRadiusAxis();

    var radiusExtent = radiusAxis.getExtent();
    var angleExtent = angleAxis.getExtent();

    var RADIAN = Math.PI / 180;

    var clipPath = new Sector({
        shape: {
            cx: polar.cx,
            cy: polar.cy,
            r0: radiusExtent[0],
            r: radiusExtent[1],
            startAngle: -angleExtent[0] * RADIAN,
            endAngle: -angleExtent[1] * RADIAN,
            clockwise: angleAxis.inverse
        }
    });

    if (hasAnimation) {
        clipPath.shape.endAngle = -angleExtent[0] * RADIAN;
        initProps(clipPath, {
            shape: {
                endAngle: -angleExtent[1] * RADIAN
            }
        }, seriesModel);
    }

    return clipPath;
}

function createClipShape(coordSys, hasAnimation, seriesModel) {
    return coordSys.type === 'polar'
        ? createPolarClipShape(coordSys, hasAnimation, seriesModel)
        : createGridClipShape(coordSys, hasAnimation, seriesModel);
}

function turnPointsIntoStep(points, coordSys, stepTurnAt) {
    var baseAxis = coordSys.getBaseAxis();
    var baseIndex = baseAxis.dim === 'x' || baseAxis.dim === 'radius' ? 0 : 1;

    var stepPoints = [];
    for (var i = 0; i < points.length - 1; i++) {
        var nextPt = points[i + 1];
        var pt = points[i];
        stepPoints.push(pt);

        var stepPt = [];
        switch (stepTurnAt) {
            case 'end':
                stepPt[baseIndex] = nextPt[baseIndex];
                stepPt[1 - baseIndex] = pt[1 - baseIndex];
                // default is start
                stepPoints.push(stepPt);
                break;
            case 'middle':
                // default is start
                var middle = (pt[baseIndex] + nextPt[baseIndex]) / 2;
                var stepPt2 = [];
                stepPt[baseIndex] = stepPt2[baseIndex] = middle;
                stepPt[1 - baseIndex] = pt[1 - baseIndex];
                stepPt2[1 - baseIndex] = nextPt[1 - baseIndex];
                stepPoints.push(stepPt);
                stepPoints.push(stepPt2);
                break;
            default:
                stepPt[baseIndex] = pt[baseIndex];
                stepPt[1 - baseIndex] = nextPt[1 - baseIndex];
                // default is start
                stepPoints.push(stepPt);
        }
    }
    // Last points
    points[i] && stepPoints.push(points[i]);
    return stepPoints;
}

function getVisualGradient(data, coordSys) {
    var visualMetaList = data.getVisual('visualMeta');
    if (!visualMetaList || !visualMetaList.length || !data.count()) {
        // When data.count() is 0, gradient range can not be calculated.
        return;
    }

    if (coordSys.type !== 'cartesian2d') {
        if (__DEV__) {
            console.warn('Visual map on line style is only supported on cartesian2d.');
        }
        return;
    }

    var coordDim;
    var visualMeta;

    for (var i = visualMetaList.length - 1; i >= 0; i--) {
        var dimIndex = visualMetaList[i].dimension;
        var dimName = data.dimensions[dimIndex];
        var dimInfo = data.getDimensionInfo(dimName);
        coordDim = dimInfo && dimInfo.coordDim;
        // Can only be x or y
        if (coordDim === 'x' || coordDim === 'y') {
            visualMeta = visualMetaList[i];
            break;
        }
    }

    if (!visualMeta) {
        if (__DEV__) {
            console.warn('Visual map on line style only support x or y dimension.');
        }
        return;
    }

    // If the area to be rendered is bigger than area defined by LinearGradient,
    // the canvas spec prescribes that the color of the first stop and the last
    // stop should be used. But if two stops are added at offset 0, in effect
    // browsers use the color of the second stop to render area outside
    // LinearGradient. So we can only infinitesimally extend area defined in
    // LinearGradient to render `outerColors`.

    var axis = coordSys.getAxis(coordDim);

    // dataToCoor mapping may not be linear, but must be monotonic.
    var colorStops = map(visualMeta.stops, function (stop) {
        return {
            coord: axis.toGlobalCoord(axis.dataToCoord(stop.value)),
            color: stop.color
        };
    });
    var stopLen = colorStops.length;
    var outerColors = visualMeta.outerColors.slice();

    if (stopLen && colorStops[0].coord > colorStops[stopLen - 1].coord) {
        colorStops.reverse();
        outerColors.reverse();
    }

    var tinyExtent = 10; // Arbitrary value: 10px
    var minCoord = colorStops[0].coord - tinyExtent;
    var maxCoord = colorStops[stopLen - 1].coord + tinyExtent;
    var coordSpan = maxCoord - minCoord;

    if (coordSpan < 1e-3) {
        return 'transparent';
    }

    each$1(colorStops, function (stop) {
        stop.offset = (stop.coord - minCoord) / coordSpan;
    });
    colorStops.push({
        offset: stopLen ? colorStops[stopLen - 1].offset : 0.5,
        color: outerColors[1] || 'transparent'
    });
    colorStops.unshift({ // notice colorStops.length have been changed.
        offset: stopLen ? colorStops[0].offset : 0.5,
        color: outerColors[0] || 'transparent'
    });

    // zrUtil.each(colorStops, function (colorStop) {
    //     // Make sure each offset has rounded px to avoid not sharp edge
    //     colorStop.offset = (Math.round(colorStop.offset * (end - start) + start) - start) / (end - start);
    // });

    var gradient = new LinearGradient(0, 0, 0, 0, colorStops, true);
    gradient[coordDim] = minCoord;
    gradient[coordDim + '2'] = maxCoord;

    return gradient;
}

Chart.extend({

    type: 'line',

    init: function () {
        var lineGroup = new Group();

        var symbolDraw = new SymbolDraw();
        this.group.add(symbolDraw.group);

        this._symbolDraw = symbolDraw;
        this._lineGroup = lineGroup;
    },

    render: function (seriesModel, ecModel, api) {
        var coordSys = seriesModel.coordinateSystem;
        var group = this.group;
        var data = seriesModel.getData();
        var lineStyleModel = seriesModel.getModel('lineStyle');
        var areaStyleModel = seriesModel.getModel('areaStyle');

        var points = data.mapArray(data.getItemLayout);

        var isCoordSysPolar = coordSys.type === 'polar';
        var prevCoordSys = this._coordSys;

        var symbolDraw = this._symbolDraw;
        var polyline = this._polyline;
        var polygon = this._polygon;

        var lineGroup = this._lineGroup;

        var hasAnimation = seriesModel.get('animation');

        var isAreaChart = !areaStyleModel.isEmpty();

        var valueOrigin = areaStyleModel.get('origin');
        var dataCoordInfo = prepareDataCoordInfo(coordSys, data, valueOrigin);

        var stackedOnPoints = getStackedOnPoints(coordSys, data, dataCoordInfo);

        var showSymbol = seriesModel.get('showSymbol');

        var isSymbolIgnore = showSymbol && !isCoordSysPolar && !seriesModel.get('showAllSymbol')
            && this._getSymbolIgnoreFunc(data, coordSys);

        // Remove temporary symbols
        var oldData = this._data;
        oldData && oldData.eachItemGraphicEl(function (el, idx) {
            if (el.__temp) {
                group.remove(el);
                oldData.setItemGraphicEl(idx, null);
            }
        });

        // Remove previous created symbols if showSymbol changed to false
        if (!showSymbol) {
            symbolDraw.remove();
        }

        group.add(lineGroup);

        // FIXME step not support polar
        var step = !isCoordSysPolar && seriesModel.get('step');
        // Initialization animation or coordinate system changed
        if (
            !(polyline && prevCoordSys.type === coordSys.type && step === this._step)
        ) {
            showSymbol && symbolDraw.updateData(data, {
                isIgnore: isSymbolIgnore,
                clipShape: createClipShape(coordSys, false, seriesModel)
            });

            if (step) {
                // TODO If stacked series is not step
                points = turnPointsIntoStep(points, coordSys, step);
                stackedOnPoints = turnPointsIntoStep(stackedOnPoints, coordSys, step);
            }

            polyline = this._newPolyline(points, coordSys, hasAnimation);
            if (isAreaChart) {
                polygon = this._newPolygon(
                    points, stackedOnPoints,
                    coordSys, hasAnimation
                );
            }
            lineGroup.setClipPath(createClipShape(coordSys, true, seriesModel));
        }
        else {
            if (isAreaChart && !polygon) {
                // If areaStyle is added
                polygon = this._newPolygon(
                    points, stackedOnPoints,
                    coordSys, hasAnimation
                );
            }
            else if (polygon && !isAreaChart) {
                // If areaStyle is removed
                lineGroup.remove(polygon);
                polygon = this._polygon = null;
            }

            var coordSysClipShape = createClipShape(coordSys, false, seriesModel);

            // Update clipPath
            lineGroup.setClipPath(coordSysClipShape);

            // Always update, or it is wrong in the case turning on legend
            // because points are not changed
            showSymbol && symbolDraw.updateData(data, {
                isIgnore: isSymbolIgnore,
                clipShape: coordSysClipShape
            });

            // Stop symbol animation and sync with line points
            // FIXME performance?
            data.eachItemGraphicEl(function (el) {
                el.stopAnimation(true);
            });

            // In the case data zoom triggerred refreshing frequently
            // Data may not change if line has a category axis. So it should animate nothing
            if (!isPointsSame(this._stackedOnPoints, stackedOnPoints)
                || !isPointsSame(this._points, points)
            ) {
                if (hasAnimation) {
                    this._updateAnimation(
                        data, stackedOnPoints, coordSys, api, step, valueOrigin
                    );
                }
                else {
                    // Not do it in update with animation
                    if (step) {
                        // TODO If stacked series is not step
                        points = turnPointsIntoStep(points, coordSys, step);
                        stackedOnPoints = turnPointsIntoStep(stackedOnPoints, coordSys, step);
                    }

                    polyline.setShape({
                        points: points
                    });
                    polygon && polygon.setShape({
                        points: points,
                        stackedOnPoints: stackedOnPoints
                    });
                }
            }
        }

        var visualColor = getVisualGradient(data, coordSys) || data.getVisual('color');

        polyline.useStyle(defaults(
            // Use color in lineStyle first
            lineStyleModel.getLineStyle(),
            {
                fill: 'none',
                stroke: visualColor,
                lineJoin: 'bevel'
            }
        ));

        var smooth = seriesModel.get('smooth');
        smooth = getSmooth(seriesModel.get('smooth'));
        polyline.setShape({
            smooth: smooth,
            smoothMonotone: seriesModel.get('smoothMonotone'),
            connectNulls: seriesModel.get('connectNulls')
        });

        if (polygon) {
            var stackedOnSeries = data.getCalculationInfo('stackedOnSeries');
            var stackedOnSmooth = 0;

            polygon.useStyle(defaults(
                areaStyleModel.getAreaStyle(),
                {
                    fill: visualColor,
                    opacity: 0.7,
                    lineJoin: 'bevel'
                }
            ));

            if (stackedOnSeries) {
                stackedOnSmooth = getSmooth(stackedOnSeries.get('smooth'));
            }

            polygon.setShape({
                smooth: smooth,
                stackedOnSmooth: stackedOnSmooth,
                smoothMonotone: seriesModel.get('smoothMonotone'),
                connectNulls: seriesModel.get('connectNulls')
            });
        }

        this._data = data;
        // Save the coordinate system for transition animation when data changed
        this._coordSys = coordSys;
        this._stackedOnPoints = stackedOnPoints;
        this._points = points;
        this._step = step;
        this._valueOrigin = valueOrigin;
    },

    dispose: function () {},

    highlight: function (seriesModel, ecModel, api, payload) {
        var data = seriesModel.getData();
        var dataIndex = queryDataIndex(data, payload);

        if (!(dataIndex instanceof Array) && dataIndex != null && dataIndex >= 0) {
            var symbol = data.getItemGraphicEl(dataIndex);
            if (!symbol) {
                // Create a temporary symbol if it is not exists
                var pt = data.getItemLayout(dataIndex);
                if (!pt) {
                    // Null data
                    return;
                }
                symbol = new SymbolClz(data, dataIndex);
                symbol.position = pt;
                symbol.setZ(
                    seriesModel.get('zlevel'),
                    seriesModel.get('z')
                );
                symbol.ignore = isNaN(pt[0]) || isNaN(pt[1]);
                symbol.__temp = true;
                data.setItemGraphicEl(dataIndex, symbol);

                // Stop scale animation
                symbol.stopSymbolAnimation(true);

                this.group.add(symbol);
            }
            symbol.highlight();
        }
        else {
            // Highlight whole series
            Chart.prototype.highlight.call(
                this, seriesModel, ecModel, api, payload
            );
        }
    },

    downplay: function (seriesModel, ecModel, api, payload) {
        var data = seriesModel.getData();
        var dataIndex = queryDataIndex(data, payload);
        if (dataIndex != null && dataIndex >= 0) {
            var symbol = data.getItemGraphicEl(dataIndex);
            if (symbol) {
                if (symbol.__temp) {
                    data.setItemGraphicEl(dataIndex, null);
                    this.group.remove(symbol);
                }
                else {
                    symbol.downplay();
                }
            }
        }
        else {
            // FIXME
            // can not downplay completely.
            // Downplay whole series
            Chart.prototype.downplay.call(
                this, seriesModel, ecModel, api, payload
            );
        }
    },

    /**
     * @param {module:zrender/container/Group} group
     * @param {Array.<Array.<number>>} points
     * @private
     */
    _newPolyline: function (points) {
        var polyline = this._polyline;
        // Remove previous created polyline
        if (polyline) {
            this._lineGroup.remove(polyline);
        }

        polyline = new Polyline$1({
            shape: {
                points: points
            },
            silent: true,
            z2: 10
        });

        this._lineGroup.add(polyline);

        this._polyline = polyline;

        return polyline;
    },

    /**
     * @param {module:zrender/container/Group} group
     * @param {Array.<Array.<number>>} stackedOnPoints
     * @param {Array.<Array.<number>>} points
     * @private
     */
    _newPolygon: function (points, stackedOnPoints) {
        var polygon = this._polygon;
        // Remove previous created polygon
        if (polygon) {
            this._lineGroup.remove(polygon);
        }

        polygon = new Polygon$1({
            shape: {
                points: points,
                stackedOnPoints: stackedOnPoints
            },
            silent: true
        });

        this._lineGroup.add(polygon);

        this._polygon = polygon;
        return polygon;
    },
    /**
     * @private
     */
    _getSymbolIgnoreFunc: function (data, coordSys) {
        var categoryAxis = coordSys.getAxesByScale('ordinal')[0];
        // `getLabelInterval` is provided by echarts/component/axis
        if (categoryAxis && categoryAxis.isLabelIgnored) {
            return bind(categoryAxis.isLabelIgnored, categoryAxis);
        }
    },

    /**
     * @private
     */
    // FIXME Two value axis
    _updateAnimation: function (data, stackedOnPoints, coordSys, api, step, valueOrigin) {
        var polyline = this._polyline;
        var polygon = this._polygon;
        var seriesModel = data.hostModel;

        var diff = lineAnimationDiff(
            this._data, data,
            this._stackedOnPoints, stackedOnPoints,
            this._coordSys, coordSys,
            this._valueOrigin, valueOrigin
        );

        var current = diff.current;
        var stackedOnCurrent = diff.stackedOnCurrent;
        var next = diff.next;
        var stackedOnNext = diff.stackedOnNext;
        if (step) {
            // TODO If stacked series is not step
            current = turnPointsIntoStep(diff.current, coordSys, step);
            stackedOnCurrent = turnPointsIntoStep(diff.stackedOnCurrent, coordSys, step);
            next = turnPointsIntoStep(diff.next, coordSys, step);
            stackedOnNext = turnPointsIntoStep(diff.stackedOnNext, coordSys, step);
        }
        // `diff.current` is subset of `current` (which should be ensured by
        // turnPointsIntoStep), so points in `__points` can be updated when
        // points in `current` are update during animation.
        polyline.shape.__points = diff.current;
        polyline.shape.points = current;

        updateProps(polyline, {
            shape: {
                points: next
            }
        }, seriesModel);

        if (polygon) {
            polygon.setShape({
                points: current,
                stackedOnPoints: stackedOnCurrent
            });
            updateProps(polygon, {
                shape: {
                    points: next,
                    stackedOnPoints: stackedOnNext
                }
            }, seriesModel);
        }

        var updatedDataInfo = [];
        var diffStatus = diff.status;

        for (var i = 0; i < diffStatus.length; i++) {
            var cmd = diffStatus[i].cmd;
            if (cmd === '=') {
                var el = data.getItemGraphicEl(diffStatus[i].idx1);
                if (el) {
                    updatedDataInfo.push({
                        el: el,
                        ptIdx: i    // Index of points
                    });
                }
            }
        }

        if (polyline.animators && polyline.animators.length) {
            polyline.animators[0].during(function () {
                for (var i = 0; i < updatedDataInfo.length; i++) {
                    var el = updatedDataInfo[i].el;
                    el.attr('position', polyline.shape.__points[updatedDataInfo[i].ptIdx]);
                }
            });
        }
    },

    remove: function (ecModel) {
        var group = this.group;
        var oldData = this._data;
        this._lineGroup.removeAll();
        this._symbolDraw.remove(true);
        // Remove temporary created elements when highlighting
        oldData && oldData.eachItemGraphicEl(function (el, idx) {
            if (el.__temp) {
                group.remove(el);
                oldData.setItemGraphicEl(idx, null);
            }
        });

        this._polyline =
        this._polygon =
        this._coordSys =
        this._points =
        this._stackedOnPoints =
        this._data = null;
    }
});

var visualSymbol = function (seriesType, defaultSymbolType, legendSymbol) {
    // Encoding visual for all series include which is filtered for legend drawing
    return {
        seriesType: seriesType,
        performRawSeries: true,
        reset: function (seriesModel, ecModel, api) {
            var data = seriesModel.getData();

            var symbolType = seriesModel.get('symbol') || defaultSymbolType;
            var symbolSize = seriesModel.get('symbolSize');

            data.setVisual({
                legendSymbol: legendSymbol || symbolType,
                symbol: symbolType,
                symbolSize: symbolSize
            });

            // Only visible series has each data be visual encoded
            if (ecModel.isSeriesFiltered(seriesModel)) {
                return;
            }

            var hasCallback = typeof symbolSize === 'function';

            function dataEach(data, idx) {
                if (typeof symbolSize === 'function') {
                    var rawValue = seriesModel.getRawValue(idx);
                    // FIXME
                    var params = seriesModel.getDataParams(idx);
                    data.setItemVisual(idx, 'symbolSize', symbolSize(rawValue, params));
                }

                if (data.hasItemOption) {
                    var itemModel = data.getItemModel(idx);
                    var itemSymbolType = itemModel.getShallow('symbol', true);
                    var itemSymbolSize = itemModel.getShallow('symbolSize', true);
                    // If has item symbol
                    if (itemSymbolType != null) {
                        data.setItemVisual(idx, 'symbol', itemSymbolType);
                    }
                    if (itemSymbolSize != null) {
                        // PENDING Transform symbolSize ?
                        data.setItemVisual(idx, 'symbolSize', itemSymbolSize);
                    }
                }
            }

            return { dataEach: (data.hasItemOption || hasCallback) ? dataEach : null };
        }
    };
};

var layoutPoints = function (seriesType) {
    return {
        seriesType: seriesType,

        plan: createRenderPlanner(),

        reset: function (seriesModel) {
            var data = seriesModel.getData();
            var coordSys = seriesModel.coordinateSystem;
            var pipelineContext = seriesModel.pipelineContext;
            var isLargeRender = pipelineContext.large;

            if (!coordSys) {
                return;
            }

            var dims = map(coordSys.dimensions, function (dim) {
                return data.mapDimension(dim);
            }).slice(0, 2);
            var dimLen = dims.length;

            if (isDimensionStacked(data, dims[0], dims[1])) {
                dims[0] = data.getCalculationInfo('stackResultDimension');
            }
            if (isDimensionStacked(data, dims[1], dims[0])) {
                dims[1] = data.getCalculationInfo('stackResultDimension');
            }

            function progress(params, data) {
                var segCount = params.end - params.start;
                var points = isLargeRender && new Float32Array(segCount * dimLen);

                for (var i = params.start, offset = 0, tmpIn = [], tmpOut = []; i < params.end; i++) {
                    var point;

                    if (dimLen === 1) {
                        var x = data.get(dims[0], i, true);
                        point = !isNaN(x) && coordSys.dataToPoint(x, null, tmpOut);
                    }
                    else {
                        var x = tmpIn[0] = data.get(dims[0], i, true);
                        var y = tmpIn[1] = data.get(dims[1], i, true);
                        // Also {Array.<number>}, not undefined to avoid if...else... statement
                        point = !isNaN(x) && !isNaN(y) && coordSys.dataToPoint(tmpIn, null, tmpOut);
                    }

                    if (isLargeRender) {
                        points[offset++] = point ? point[0] : NaN;
                        points[offset++] = point ? point[1] : NaN;
                    }
                    else {
                        data.setItemLayout(i, (point && point.slice()) || [NaN, NaN]);
                    }
                }

                isLargeRender && data.setLayout('symbolPoints', points);
            }

            return dimLen && {progress: progress};
        }
    };
};

var samplers = {
    average: function (frame) {
        var sum = 0;
        var count = 0;
        for (var i = 0; i < frame.length; i++) {
            if (!isNaN(frame[i])) {
                sum += frame[i];
                count++;
            }
        }
        // Return NaN if count is 0
        return count === 0 ? NaN : sum / count;
    },
    sum: function (frame) {
        var sum = 0;
        for (var i = 0; i < frame.length; i++) {
            // Ignore NaN
            sum += frame[i] || 0;
        }
        return sum;
    },
    max: function (frame) {
        var max = -Infinity;
        for (var i = 0; i < frame.length; i++) {
            frame[i] > max && (max = frame[i]);
        }
        return max;
    },
    min: function (frame) {
        var min = Infinity;
        for (var i = 0; i < frame.length; i++) {
            frame[i] < min && (min = frame[i]);
        }
        return min;
    },
    // TODO
    // Median
    nearest: function (frame) {
        return frame[0];
    }
};

var indexSampler = function (frame, value) {
    return Math.round(frame.length / 2);
};

var dataSample = function (seriesType) {
    return {
        seriesType: seriesType,
        reset: function (seriesModel, ecModel, api) {
            var data = seriesModel.getData();
            var sampling = seriesModel.get('sampling');
            var coordSys = seriesModel.coordinateSystem;
            // Only cartesian2d support down sampling
            if (coordSys.type === 'cartesian2d' && sampling) {
                var baseAxis = coordSys.getBaseAxis();
                var valueAxis = coordSys.getOtherAxis(baseAxis);
                var extent = baseAxis.getExtent();
                // Coordinste system has been resized
                var size = extent[1] - extent[0];
                var rate = Math.round(data.count() / size);
                if (rate > 1) {
                    var sampler;
                    if (typeof sampling === 'string') {
                        sampler = samplers[sampling];
                    }
                    else if (typeof sampling === 'function') {
                        sampler = sampling;
                    }
                    if (sampler) {
                        seriesModel.setData(data.downSample(
                            valueAxis.dim, 1 / rate, sampler, indexSampler
                        ));
                    }
                }
            }
        }
    };
};

/**
 * // Scale class management
 * @module echarts/scale/Scale
 */

/**
 * @param {Object} [setting]
 */
function Scale(setting) {
    this._setting = setting || {};

    /**
     * Extent
     * @type {Array.<number>}
     * @protected
     */
    this._extent = [Infinity, -Infinity];

    /**
     * Step is calculated in adjustExtent
     * @type {Array.<number>}
     * @protected
     */
    this._interval = 0;

    this.init && this.init.apply(this, arguments);
}

/**
 * Parse input val to valid inner number.
 * @param {*} val
 * @return {number}
 */
Scale.prototype.parse = function (val) {
    // Notice: This would be a trap here, If the implementation
    // of this method depends on extent, and this method is used
    // before extent set (like in dataZoom), it would be wrong.
    // Nevertheless, parse does not depend on extent generally.
    return val;
};

Scale.prototype.getSetting = function (name) {
    return this._setting[name];
};

Scale.prototype.contain = function (val) {
    var extent = this._extent;
    return val >= extent[0] && val <= extent[1];
};

/**
 * Normalize value to linear [0, 1], return 0.5 if extent span is 0
 * @param {number} val
 * @return {number}
 */
Scale.prototype.normalize = function (val) {
    var extent = this._extent;
    if (extent[1] === extent[0]) {
        return 0.5;
    }
    return (val - extent[0]) / (extent[1] - extent[0]);
};

/**
 * Scale normalized value
 * @param {number} val
 * @return {number}
 */
Scale.prototype.scale = function (val) {
    var extent = this._extent;
    return val * (extent[1] - extent[0]) + extent[0];
};

/**
 * Set extent from data
 * @param {Array.<number>} other
 */
Scale.prototype.unionExtent = function (other) {
    var extent = this._extent;
    other[0] < extent[0] && (extent[0] = other[0]);
    other[1] > extent[1] && (extent[1] = other[1]);
    // not setExtent because in log axis it may transformed to power
    // this.setExtent(extent[0], extent[1]);
};

/**
 * Set extent from data
 * @param {module:echarts/data/List} data
 * @param {string} dim
 */
Scale.prototype.unionExtentFromData = function (data, dim) {
    this.unionExtent(data.getApproximateExtent(dim));
};

/**
 * Get extent
 * @return {Array.<number>}
 */
Scale.prototype.getExtent = function () {
    return this._extent.slice();
};

/**
 * Set extent
 * @param {number} start
 * @param {number} end
 */
Scale.prototype.setExtent = function (start, end) {
    var thisExtent = this._extent;
    if (!isNaN(start)) {
        thisExtent[0] = start;
    }
    if (!isNaN(end)) {
        thisExtent[1] = end;
    }
};

/**
 * @return {Array.<string>}
 */
Scale.prototype.getTicksLabels = function () {
    var labels = [];
    var ticks = this.getTicks();
    for (var i = 0; i < ticks.length; i++) {
        labels.push(this.getLabel(ticks[i]));
    }
    return labels;
};

/**
 * When axis extent depends on data and no data exists,
 * axis ticks should not be drawn, which is named 'blank'.
 */
Scale.prototype.isBlank = function () {
    return this._isBlank;
},

/**
 * When axis extent depends on data and no data exists,
 * axis ticks should not be drawn, which is named 'blank'.
 */
Scale.prototype.setBlank = function (isBlank) {
    this._isBlank = isBlank;
};


enableClassExtend(Scale);
enableClassManagement(Scale, {
    registerWhenExtend: true
});

/**
 * @constructor
 * @param {Object} [opt]
 * @param {Object} [opt.categories=[]]
 * @param {Object} [opt.needCollect=false]
 * @param {Object} [opt.deduplication=false]
 */
function OrdinalMeta(opt) {

    /**
     * @readOnly
     * @type {Array.<string>}
     */
    this.categories = opt.categories || [];

    /**
     * @private
     * @type {boolean}
     */
    this._needCollect = opt.needCollect;

    /**
     * @private
     * @type {boolean}
     */
    this._deduplication = opt.deduplication;

    /**
     * @private
     * @type {boolean}
     */
    this._map;
}

/**
 * @param {module:echarts/model/Model} axisModel
 * @return {module:echarts/data/OrdinalMeta}
 */
OrdinalMeta.createByAxisModel = function (axisModel) {
    var option = axisModel.option;
    var data = option.data;
    var categories = data && map(data, getName);

    return new OrdinalMeta({
        categories: categories,
        needCollect: !categories,
        // deduplication is default in axis.
        deduplication: option.dedplication !== false
    });
};

var proto$1 = OrdinalMeta.prototype;

/**
 * @param {string} category
 * @return {number} ordinal
 */
proto$1.getOrdinal = function (category) {
    return getOrCreateMap(this).get(category);
};

/**
 * @param {*} category
 * @return {number} The ordinal. If not found, return NaN.
 */
proto$1.parseAndCollect = function (category) {
    var index;
    var needCollect = this._needCollect;

    // The value of category dim can be the index of the given category set.
    // This feature is only supported when !needCollect, because we should
    // consider a common case: a value is 2017, which is a number but is
    // expected to be tread as a category. This case usually happen in dataset,
    // where it happent to be no need of the index feature.
    if (typeof category !== 'string' && !needCollect) {
        return category;
    }

    // Optimize for the scenario:
    // category is ['2012-01-01', '2012-01-02', ...], where the input
    // data has been ensured not duplicate and is large data.
    // Notice, if a dataset dimension provide categroies, usually echarts
    // should remove duplication except user tell echarts dont do that
    // (set axis.deduplication = false), because echarts do not know whether
    // the values in the category dimension has duplication (consider the
    // parallel-aqi example)
    if (needCollect && !this._deduplication) {
        index = this.categories.length;
        this.categories[index] = category;
        return index;
    }

    var map$$1 = getOrCreateMap(this);
    index = map$$1.get(category);

    if (index == null) {
        if (needCollect) {
            index = this.categories.length;
            this.categories[index] = category;
            map$$1.set(category, index);
        }
        else {
            index = NaN;
        }
    }

    return index;
};

// Consider big data, do not create map until needed.
function getOrCreateMap(ordinalMeta) {
    return ordinalMeta._map || (
        ordinalMeta._map = createHashMap(ordinalMeta.categories)
    );
}

function getName(obj) {
    if (isObject$1(obj) && obj.value != null) {
        return obj.value;
    }
    else {
        return obj + '';
    }
}

/**
 * Linear continuous scale
 * @module echarts/coord/scale/Ordinal
 *
 * http://en.wikipedia.org/wiki/Level_of_measurement
 */

// FIXME only one data

var scaleProto = Scale.prototype;

var OrdinalScale = Scale.extend({

    type: 'ordinal',

    /**
     * @param {module:echarts/data/OrdianlMeta|Array.<string>} ordinalMeta
     */
    init: function (ordinalMeta, extent) {
        // Caution: Should not use instanceof, consider ec-extensions using
        // import approach to get OrdinalMeta class.
        if (!ordinalMeta || isArray(ordinalMeta)) {
            ordinalMeta = new OrdinalMeta({categories: ordinalMeta});
        }
        this._ordinalMeta = ordinalMeta;
        this._extent = extent || [0, ordinalMeta.categories.length - 1];
    },

    parse: function (val) {
        return typeof val === 'string'
            ? this._ordinalMeta.getOrdinal(val)
            // val might be float.
            : Math.round(val);
    },

    contain: function (rank) {
        rank = this.parse(rank);
        return scaleProto.contain.call(this, rank)
            && this._ordinalMeta.categories[rank] != null;
    },

    /**
     * Normalize given rank or name to linear [0, 1]
     * @param {number|string} [val]
     * @return {number}
     */
    normalize: function (val) {
        return scaleProto.normalize.call(this, this.parse(val));
    },

    scale: function (val) {
        return Math.round(scaleProto.scale.call(this, val));
    },

    /**
     * @return {Array}
     */
    getTicks: function () {
        var ticks = [];
        var extent = this._extent;
        var rank = extent[0];

        while (rank <= extent[1]) {
            ticks.push(rank);
            rank++;
        }

        return ticks;
    },

    /**
     * Get item on rank n
     * @param {number} n
     * @return {string}
     */
    getLabel: function (n) {
        return this._ordinalMeta.categories[n];
    },

    /**
     * @return {number}
     */
    count: function () {
        return this._extent[1] - this._extent[0] + 1;
    },

    /**
     * @override
     */
    unionExtentFromData: function (data, dim) {
        this.unionExtent(data.getApproximateExtent(dim));
    },

    niceTicks: noop,
    niceExtent: noop
});

/**
 * @return {module:echarts/scale/Time}
 */
OrdinalScale.create = function () {
    return new OrdinalScale();
};

/**
 * For testable.
 */

var roundNumber$1 = round$1;

/**
 * @param {Array.<number>} extent Both extent[0] and extent[1] should be valid number.
 *                                Should be extent[0] < extent[1].
 * @param {number} splitNumber splitNumber should be >= 1.
 * @param {number} [minInterval]
 * @param {number} [maxInterval]
 * @return {Object} {interval, intervalPrecision, niceTickExtent}
 */
function intervalScaleNiceTicks(extent, splitNumber, minInterval, maxInterval) {
    var result = {};
    var span = extent[1] - extent[0];

    var interval = result.interval = nice(span / splitNumber, true);
    if (minInterval != null && interval < minInterval) {
        interval = result.interval = minInterval;
    }
    if (maxInterval != null && interval > maxInterval) {
        interval = result.interval = maxInterval;
    }
    // Tow more digital for tick.
    var precision = result.intervalPrecision = getIntervalPrecision(interval);
    // Niced extent inside original extent
    var niceTickExtent = result.niceTickExtent = [
        roundNumber$1(Math.ceil(extent[0] / interval) * interval, precision),
        roundNumber$1(Math.floor(extent[1] / interval) * interval, precision)
    ];

    fixExtent(niceTickExtent, extent);

    return result;
}

/**
 * @param {number} interval
 * @return {number} interval precision
 */
function getIntervalPrecision(interval) {
    // Tow more digital for tick.
    return getPrecisionSafe(interval) + 2;
}

function clamp(niceTickExtent, idx, extent) {
    niceTickExtent[idx] = Math.max(Math.min(niceTickExtent[idx], extent[1]), extent[0]);
}

// In some cases (e.g., splitNumber is 1), niceTickExtent may be out of extent.
function fixExtent(niceTickExtent, extent) {
    !isFinite(niceTickExtent[0]) && (niceTickExtent[0] = extent[0]);
    !isFinite(niceTickExtent[1]) && (niceTickExtent[1] = extent[1]);
    clamp(niceTickExtent, 0, extent);
    clamp(niceTickExtent, 1, extent);
    if (niceTickExtent[0] > niceTickExtent[1]) {
        niceTickExtent[0] = niceTickExtent[1];
    }
}

function intervalScaleGetTicks(interval, extent, niceTickExtent, intervalPrecision) {
    var ticks = [];

    // If interval is 0, return [];
    if (!interval) {
        return ticks;
    }

    // Consider this case: using dataZoom toolbox, zoom and zoom.
    var safeLimit = 10000;

    if (extent[0] < niceTickExtent[0]) {
        ticks.push(extent[0]);
    }
    var tick = niceTickExtent[0];

    while (tick <= niceTickExtent[1]) {
        ticks.push(tick);
        // Avoid rounding error
        tick = roundNumber$1(tick + interval, intervalPrecision);
        if (tick === ticks[ticks.length - 1]) {
            // Consider out of safe float point, e.g.,
            // -3711126.9907707 + 2e-10 === -3711126.9907707
            break;
        }
        if (ticks.length > safeLimit) {
            return [];
        }
    }
    // Consider this case: the last item of ticks is smaller
    // than niceTickExtent[1] and niceTickExtent[1] === extent[1].
    if (extent[1] > (ticks.length ? ticks[ticks.length - 1] : niceTickExtent[1])) {
        ticks.push(extent[1]);
    }

    return ticks;
}

/**
 * Interval scale
 * @module echarts/scale/Interval
 */


var roundNumber = round$1;

/**
 * @alias module:echarts/coord/scale/Interval
 * @constructor
 */
var IntervalScale = Scale.extend({

    type: 'interval',

    _interval: 0,

    _intervalPrecision: 2,

    setExtent: function (start, end) {
        var thisExtent = this._extent;
        //start,end may be a Number like '25',so...
        if (!isNaN(start)) {
            thisExtent[0] = parseFloat(start);
        }
        if (!isNaN(end)) {
            thisExtent[1] = parseFloat(end);
        }
    },

    unionExtent: function (other) {
        var extent = this._extent;
        other[0] < extent[0] && (extent[0] = other[0]);
        other[1] > extent[1] && (extent[1] = other[1]);

        // unionExtent may called by it's sub classes
        IntervalScale.prototype.setExtent.call(this, extent[0], extent[1]);
    },
    /**
     * Get interval
     */
    getInterval: function () {
        return this._interval;
    },

    /**
     * Set interval
     */
    setInterval: function (interval) {
        this._interval = interval;
        // Dropped auto calculated niceExtent and use user setted extent
        // We assume user wan't to set both interval, min, max to get a better result
        this._niceExtent = this._extent.slice();

        this._intervalPrecision = getIntervalPrecision(interval);
    },

    /**
     * @return {Array.<number>}
     */
    getTicks: function () {
        return intervalScaleGetTicks(
            this._interval, this._extent, this._niceExtent, this._intervalPrecision
        );
    },

    /**
     * @return {Array.<string>}
     */
    getTicksLabels: function () {
        var labels = [];
        var ticks = this.getTicks();
        for (var i = 0; i < ticks.length; i++) {
            labels.push(this.getLabel(ticks[i]));
        }
        return labels;
    },

    /**
     * @param {number} data
     * @param {Object} [opt]
     * @param {number|string} [opt.precision] If 'auto', use nice presision.
     * @param {boolean} [opt.pad] returns 1.50 but not 1.5 if precision is 2.
     * @return {string}
     */
    getLabel: function (data, opt) {
        if (data == null) {
            return '';
        }

        var precision = opt && opt.precision;

        if (precision == null) {
            precision = getPrecisionSafe(data) || 0;
        }
        else if (precision === 'auto') {
            // Should be more precise then tick.
            precision = this._intervalPrecision;
        }

        // (1) If `precision` is set, 12.005 should be display as '12.00500'.
        // (2) Use roundNumber (toFixed) to avoid scientific notation like '3.5e-7'.
        data = roundNumber(data, precision, true);

        return addCommas(data);
    },

    /**
     * Update interval and extent of intervals for nice ticks
     *
     * @param {number} [splitNumber = 5] Desired number of ticks
     * @param {number} [minInterval]
     * @param {number} [maxInterval]
     */
    niceTicks: function (splitNumber, minInterval, maxInterval) {
        splitNumber = splitNumber || 5;
        var extent = this._extent;
        var span = extent[1] - extent[0];
        if (!isFinite(span)) {
            return;
        }
        // User may set axis min 0 and data are all negative
        // FIXME If it needs to reverse ?
        if (span < 0) {
            span = -span;
            extent.reverse();
        }

        var result = intervalScaleNiceTicks(
            extent, splitNumber, minInterval, maxInterval
        );

        this._intervalPrecision = result.intervalPrecision;
        this._interval = result.interval;
        this._niceExtent = result.niceTickExtent;
    },

    /**
     * Nice extent.
     * @param {Object} opt
     * @param {number} [opt.splitNumber = 5] Given approx tick number
     * @param {boolean} [opt.fixMin=false]
     * @param {boolean} [opt.fixMax=false]
     * @param {boolean} [opt.minInterval]
     * @param {boolean} [opt.maxInterval]
     */
    niceExtent: function (opt) {
        var extent = this._extent;
        // If extent start and end are same, expand them
        if (extent[0] === extent[1]) {
            if (extent[0] !== 0) {
                // Expand extent
                var expandSize = extent[0];
                // In the fowllowing case
                //      Axis has been fixed max 100
                //      Plus data are all 100 and axis extent are [100, 100].
                // Extend to the both side will cause expanded max is larger than fixed max.
                // So only expand to the smaller side.
                if (!opt.fixMax) {
                    extent[1] += expandSize / 2;
                    extent[0] -= expandSize / 2;
                }
                else {
                    extent[0] -= expandSize / 2;
                }
            }
            else {
                extent[1] = 1;
            }
        }
        var span = extent[1] - extent[0];
        // If there are no data and extent are [Infinity, -Infinity]
        if (!isFinite(span)) {
            extent[0] = 0;
            extent[1] = 1;
        }

        this.niceTicks(opt.splitNumber, opt.minInterval, opt.maxInterval);

        // var extent = this._extent;
        var interval = this._interval;

        if (!opt.fixMin) {
            extent[0] = roundNumber(Math.floor(extent[0] / interval) * interval);
        }
        if (!opt.fixMax) {
            extent[1] = roundNumber(Math.ceil(extent[1] / interval) * interval);
        }
    }
});

/**
 * @return {module:echarts/scale/Time}
 */
IntervalScale.create = function () {
    return new IntervalScale();
};

var STACK_PREFIX = '__ec_stack_';

function getSeriesStackId(seriesModel) {
    return seriesModel.get('stack') || STACK_PREFIX + seriesModel.seriesIndex;
}

function getAxisKey(axis) {
    return axis.dim + axis.index;
}

/**
 * @param {Object} opt
 * @param {module:echarts/coord/Axis} opt.axis Only support category axis currently.
 * @param {number} opt.count Positive interger.
 * @param {number} [opt.barWidth]
 * @param {number} [opt.barMaxWidth]
 * @param {number} [opt.barGap]
 * @param {number} [opt.barCategoryGap]
 * @return {Object} {width, offset, offsetCenter} If axis.type is not 'category', return undefined.
 */


function calBarWidthAndOffset(barSeries, api) {
    var seriesInfoList = map(barSeries, function (seriesModel) {
        var data = seriesModel.getData();
        var cartesian = seriesModel.coordinateSystem;
        var baseAxis = cartesian.getBaseAxis();
        var axisExtent = baseAxis.getExtent();
        var bandWidth = baseAxis.type === 'category'
            ? baseAxis.getBandWidth()
            : (Math.abs(axisExtent[1] - axisExtent[0]) / data.count());

        var barWidth = parsePercent$1(
            seriesModel.get('barWidth'), bandWidth
        );
        var barMaxWidth = parsePercent$1(
            seriesModel.get('barMaxWidth'), bandWidth
        );
        var barGap = seriesModel.get('barGap');
        var barCategoryGap = seriesModel.get('barCategoryGap');

        return {
            bandWidth: bandWidth,
            barWidth: barWidth,
            barMaxWidth: barMaxWidth,
            barGap: barGap,
            barCategoryGap: barCategoryGap,
            axisKey: getAxisKey(baseAxis),
            stackId: getSeriesStackId(seriesModel)
        };
    });

    return doCalBarWidthAndOffset(seriesInfoList, api);
}

function doCalBarWidthAndOffset(seriesInfoList, api) {
    // Columns info on each category axis. Key is cartesian name
    var columnsMap = {};

    each$1(seriesInfoList, function (seriesInfo, idx) {
        var axisKey = seriesInfo.axisKey;
        var bandWidth = seriesInfo.bandWidth;
        var columnsOnAxis = columnsMap[axisKey] || {
            bandWidth: bandWidth,
            remainedWidth: bandWidth,
            autoWidthCount: 0,
            categoryGap: '20%',
            gap: '30%',
            stacks: {}
        };
        var stacks = columnsOnAxis.stacks;
        columnsMap[axisKey] = columnsOnAxis;

        var stackId = seriesInfo.stackId;

        if (!stacks[stackId]) {
            columnsOnAxis.autoWidthCount++;
        }
        stacks[stackId] = stacks[stackId] || {
            width: 0,
            maxWidth: 0
        };

        // Caution: In a single coordinate system, these barGrid attributes
        // will be shared by series. Consider that they have default values,
        // only the attributes set on the last series will work.
        // Do not change this fact unless there will be a break change.

        // TODO
        var barWidth = seriesInfo.barWidth;
        if (barWidth && !stacks[stackId].width) {
            // See #6312, do not restrict width.
            stacks[stackId].width = barWidth;
            barWidth = Math.min(columnsOnAxis.remainedWidth, barWidth);
            columnsOnAxis.remainedWidth -= barWidth;
        }

        var barMaxWidth = seriesInfo.barMaxWidth;
        barMaxWidth && (stacks[stackId].maxWidth = barMaxWidth);
        var barGap = seriesInfo.barGap;
        (barGap != null) && (columnsOnAxis.gap = barGap);
        var barCategoryGap = seriesInfo.barCategoryGap;
        (barCategoryGap != null) && (columnsOnAxis.categoryGap = barCategoryGap);
    });

    var result = {};

    each$1(columnsMap, function (columnsOnAxis, coordSysName) {

        result[coordSysName] = {};

        var stacks = columnsOnAxis.stacks;
        var bandWidth = columnsOnAxis.bandWidth;
        var categoryGap = parsePercent$1(columnsOnAxis.categoryGap, bandWidth);
        var barGapPercent = parsePercent$1(columnsOnAxis.gap, 1);

        var remainedWidth = columnsOnAxis.remainedWidth;
        var autoWidthCount = columnsOnAxis.autoWidthCount;
        var autoWidth = (remainedWidth - categoryGap)
            / (autoWidthCount + (autoWidthCount - 1) * barGapPercent);
        autoWidth = Math.max(autoWidth, 0);

        // Find if any auto calculated bar exceeded maxBarWidth
        each$1(stacks, function (column, stack) {
            var maxWidth = column.maxWidth;
            if (maxWidth && maxWidth < autoWidth) {
                maxWidth = Math.min(maxWidth, remainedWidth);
                if (column.width) {
                    maxWidth = Math.min(maxWidth, column.width);
                }
                remainedWidth -= maxWidth;
                column.width = maxWidth;
                autoWidthCount--;
            }
        });

        // Recalculate width again
        autoWidth = (remainedWidth - categoryGap)
            / (autoWidthCount + (autoWidthCount - 1) * barGapPercent);
        autoWidth = Math.max(autoWidth, 0);

        var widthSum = 0;
        var lastColumn;
        each$1(stacks, function (column, idx) {
            if (!column.width) {
                column.width = autoWidth;
            }
            lastColumn = column;
            widthSum += column.width * (1 + barGapPercent);
        });
        if (lastColumn) {
            widthSum -= lastColumn.width * barGapPercent;
        }

        var offset = -widthSum / 2;
        each$1(stacks, function (column, stackId) {
            result[coordSysName][stackId] = result[coordSysName][stackId] || {
                offset: offset,
                width: column.width
            };

            offset += column.width * (1 + barGapPercent);
        });
    });

    return result;
}

/**
 * @param {string} seriesType
 * @param {module:echarts/model/Global} ecModel
 * @param {module:echarts/ExtensionAPI} api
 */
function layout(seriesType, ecModel, api) {

    var seriesModels = [];
    ecModel.eachSeriesByType(seriesType, function (seriesModel) {
        // Check series coordinate, do layout for cartesian2d only
        if (seriesModel.coordinateSystem && seriesModel.coordinateSystem.type === 'cartesian2d') {
            seriesModels.push(seriesModel);
        }
    });

    var barWidthAndOffset = calBarWidthAndOffset(seriesModels);

    var lastStackCoords = {};
    each$1(seriesModels, function (seriesModel) {

        var data = seriesModel.getData();
        var cartesian = seriesModel.coordinateSystem;
        var baseAxis = cartesian.getBaseAxis();

        var stackId = getSeriesStackId(seriesModel);
        var columnLayoutInfo = barWidthAndOffset[getAxisKey(baseAxis)][stackId];
        var columnOffset = columnLayoutInfo.offset;
        var columnWidth = columnLayoutInfo.width;
        var valueAxis = cartesian.getOtherAxis(baseAxis);

        var barMinHeight = seriesModel.get('barMinHeight') || 0;

        lastStackCoords[stackId] = lastStackCoords[stackId] || [];
        data.setLayout({
            offset: columnOffset,
            size: columnWidth
        });

        var valueDim = data.mapDimension(valueAxis.dim);
        var baseDim = data.mapDimension(baseAxis.dim);
        var stacked = isDimensionStacked(data, valueDim, baseDim);
        var isValueAxisH = valueAxis.isHorizontal();

        var valueAxisStart = (baseAxis.onZero || stacked)
            ? valueAxis.toGlobalCoord(valueAxis.dataToCoord(0))
            : valueAxis.getGlobalExtent()[0];

        for (var idx = 0, len = data.count(); idx < len; idx++) {
            var value = data.get(valueDim, idx);
            var baseValue = data.get(baseDim, idx);

            if (isNaN(value)) {
                continue;
            }

            var sign = value >= 0 ? 'p' : 'n';
            var baseCoord = valueAxisStart;

            // Because of the barMinHeight, we can not use the value in
            // stackResultDimension directly.
            if (stacked) {
                // Only ordinal axis can be stacked.
                if (!lastStackCoords[stackId][baseValue]) {
                    lastStackCoords[stackId][baseValue] = {
                        p: valueAxisStart, // Positive stack
                        n: valueAxisStart  // Negative stack
                    };
                }
                // Should also consider #4243
                baseCoord = lastStackCoords[stackId][baseValue][sign];
            }

            var x;
            var y;
            var width;
            var height;

            if (isValueAxisH) {
                var coord = cartesian.dataToPoint([value, baseValue]);
                x = baseCoord;
                y = coord[1] + columnOffset;
                width = coord[0] - valueAxisStart;
                height = columnWidth;

                if (Math.abs(width) < barMinHeight) {
                    width = (width < 0 ? -1 : 1) * barMinHeight;
                }
                stacked && (lastStackCoords[stackId][baseValue][sign] += width);
            }
            else {
                var coord = cartesian.dataToPoint([baseValue, value]);
                x = coord[0] + columnOffset;
                y = baseCoord;
                width = columnWidth;
                height = coord[1] - valueAxisStart;

                if (Math.abs(height) < barMinHeight) {
                    // Include zero to has a positive bar
                    height = (height <= 0 ? -1 : 1) * barMinHeight;
                }
                stacked && (lastStackCoords[stackId][baseValue][sign] += height);
            }

            data.setItemLayout(idx, {
                x: x,
                y: y,
                width: width,
                height: height
            });
        }

    }, this);
}

// [About UTC and local time zone]:
// In most cases, `number.parseDate` will treat input data string as local time
// (except time zone is specified in time string). And `format.formateTime` returns
// local time by default. option.useUTC is false by default. This design have
// concidered these common case:
// (1) Time that is persistent in server is in UTC, but it is needed to be diplayed
// in local time by default.
// (2) By default, the input data string (e.g., '2011-01-02') should be displayed
// as its original time, without any time difference.

var intervalScaleProto = IntervalScale.prototype;

var mathCeil = Math.ceil;
var mathFloor = Math.floor;
var ONE_SECOND = 1000;
var ONE_MINUTE = ONE_SECOND * 60;
var ONE_HOUR = ONE_MINUTE * 60;
var ONE_DAY = ONE_HOUR * 24;

// FIXME 公用？
var bisect = function (a, x, lo, hi) {
    while (lo < hi) {
        var mid = lo + hi >>> 1;
        if (a[mid][1] < x) {
            lo = mid + 1;
        }
        else {
            hi  = mid;
        }
    }
    return lo;
};

/**
 * @alias module:echarts/coord/scale/Time
 * @constructor
 */
var TimeScale = IntervalScale.extend({
    type: 'time',

    /**
     * @override
     */
    getLabel: function (val) {
        var stepLvl = this._stepLvl;

        var date = new Date(val);

        return formatTime(stepLvl[0], date, this.getSetting('useUTC'));
    },

    /**
     * @override
     */
    niceExtent: function (opt) {
        var extent = this._extent;
        // If extent start and end are same, expand them
        if (extent[0] === extent[1]) {
            // Expand extent
            extent[0] -= ONE_DAY;
            extent[1] += ONE_DAY;
        }
        // If there are no data and extent are [Infinity, -Infinity]
        if (extent[1] === -Infinity && extent[0] === Infinity) {
            var d = new Date();
            extent[1] = +new Date(d.getFullYear(), d.getMonth(), d.getDate());
            extent[0] = extent[1] - ONE_DAY;
        }

        this.niceTicks(opt.splitNumber, opt.minInterval, opt.maxInterval);

        // var extent = this._extent;
        var interval = this._interval;

        if (!opt.fixMin) {
            extent[0] = round$1(mathFloor(extent[0] / interval) * interval);
        }
        if (!opt.fixMax) {
            extent[1] = round$1(mathCeil(extent[1] / interval) * interval);
        }
    },

    /**
     * @override
     */
    niceTicks: function (approxTickNum, minInterval, maxInterval) {
        approxTickNum = approxTickNum || 10;

        var extent = this._extent;
        var span = extent[1] - extent[0];
        var approxInterval = span / approxTickNum;

        if (minInterval != null && approxInterval < minInterval) {
            approxInterval = minInterval;
        }
        if (maxInterval != null && approxInterval > maxInterval) {
            approxInterval = maxInterval;
        }

        var scaleLevelsLen = scaleLevels.length;
        var idx = bisect(scaleLevels, approxInterval, 0, scaleLevelsLen);

        var level = scaleLevels[Math.min(idx, scaleLevelsLen - 1)];
        var interval = level[1];
        // Same with interval scale if span is much larger than 1 year
        if (level[0] === 'year') {
            var yearSpan = span / interval;

            // From "Nice Numbers for Graph Labels" of Graphic Gems
            // var niceYearSpan = numberUtil.nice(yearSpan, false);
            var yearStep = nice(yearSpan / approxTickNum, true);

            interval *= yearStep;
        }

        var timezoneOffset = this.getSetting('useUTC')
            ? 0 : (new Date(+extent[0] || +extent[1])).getTimezoneOffset() * 60 * 1000;
        var niceExtent = [
            Math.round(mathCeil((extent[0] - timezoneOffset) / interval) * interval + timezoneOffset),
            Math.round(mathFloor((extent[1] - timezoneOffset) / interval) * interval + timezoneOffset)
        ];

        fixExtent(niceExtent, extent);

        this._stepLvl = level;
        // Interval will be used in getTicks
        this._interval = interval;
        this._niceExtent = niceExtent;
    },

    parse: function (val) {
        // val might be float.
        return +parseDate(val);
    }
});

each$1(['contain', 'normalize'], function (methodName) {
    TimeScale.prototype[methodName] = function (val) {
        return intervalScaleProto[methodName].call(this, this.parse(val));
    };
});

// Steps from d3
var scaleLevels = [
    // Format              interval
    ['hh:mm:ss', ONE_SECOND],          // 1s
    ['hh:mm:ss', ONE_SECOND * 5],      // 5s
    ['hh:mm:ss', ONE_SECOND * 10],     // 10s
    ['hh:mm:ss', ONE_SECOND * 15],     // 15s
    ['hh:mm:ss', ONE_SECOND * 30],     // 30s
    ['hh:mm\nMM-dd', ONE_MINUTE],      // 1m
    ['hh:mm\nMM-dd', ONE_MINUTE * 5],  // 5m
    ['hh:mm\nMM-dd', ONE_MINUTE * 10], // 10m
    ['hh:mm\nMM-dd', ONE_MINUTE * 15], // 15m
    ['hh:mm\nMM-dd', ONE_MINUTE * 30], // 30m
    ['hh:mm\nMM-dd', ONE_HOUR],        // 1h
    ['hh:mm\nMM-dd', ONE_HOUR * 2],    // 2h
    ['hh:mm\nMM-dd', ONE_HOUR * 6],    // 6h
    ['hh:mm\nMM-dd', ONE_HOUR * 12],   // 12h
    ['MM-dd\nyyyy', ONE_DAY],          // 1d
    ['MM-dd\nyyyy', ONE_DAY * 2],      // 2d
    ['MM-dd\nyyyy', ONE_DAY * 3],      // 3d
    ['MM-dd\nyyyy', ONE_DAY * 4],      // 4d
    ['MM-dd\nyyyy', ONE_DAY * 5],      // 5d
    ['MM-dd\nyyyy', ONE_DAY * 6],      // 6d
    ['week', ONE_DAY * 7],             // 7d
    ['MM-dd\nyyyy', ONE_DAY * 10],     // 10d
    ['week', ONE_DAY * 14],            // 2w
    ['week', ONE_DAY * 21],            // 3w
    ['month', ONE_DAY * 31],           // 1M
    ['week', ONE_DAY * 42],            // 6w
    ['month', ONE_DAY * 62],           // 2M
    ['week', ONE_DAY * 42],            // 10w
    ['quarter', ONE_DAY * 380 / 4],    // 3M
    ['month', ONE_DAY * 31 * 4],       // 4M
    ['month', ONE_DAY * 31 * 5],       // 5M
    ['half-year', ONE_DAY * 380 / 2],  // 6M
    ['month', ONE_DAY * 31 * 8],       // 8M
    ['month', ONE_DAY * 31 * 10],      // 10M
    ['year', ONE_DAY * 380]            // 1Y
];

/**
 * @param {module:echarts/model/Model}
 * @return {module:echarts/scale/Time}
 */
TimeScale.create = function (model) {
    return new TimeScale({useUTC: model.ecModel.get('useUTC')});
};

/**
 * Log scale
 * @module echarts/scale/Log
 */

// Use some method of IntervalScale
var scaleProto$1 = Scale.prototype;
var intervalScaleProto$1 = IntervalScale.prototype;

var getPrecisionSafe$1 = getPrecisionSafe;
var roundingErrorFix = round$1;

var mathFloor$1 = Math.floor;
var mathCeil$1 = Math.ceil;
var mathPow$1 = Math.pow;

var mathLog = Math.log;

var LogScale = Scale.extend({

    type: 'log',

    base: 10,

    $constructor: function () {
        Scale.apply(this, arguments);
        this._originalScale = new IntervalScale();
    },

    /**
     * @return {Array.<number>}
     */
    getTicks: function () {
        var originalScale = this._originalScale;
        var extent = this._extent;
        var originalExtent = originalScale.getExtent();

        return map(intervalScaleProto$1.getTicks.call(this), function (val) {
            var powVal = round$1(mathPow$1(this.base, val));

            // Fix #4158
            powVal = (val === extent[0] && originalScale.__fixMin)
                ? fixRoundingError(powVal, originalExtent[0])
                : powVal;
            powVal = (val === extent[1] && originalScale.__fixMax)
                ? fixRoundingError(powVal, originalExtent[1])
                : powVal;

            return powVal;
        }, this);
    },

    /**
     * @param {number} val
     * @return {string}
     */
    getLabel: intervalScaleProto$1.getLabel,

    /**
     * @param  {number} val
     * @return {number}
     */
    scale: function (val) {
        val = scaleProto$1.scale.call(this, val);
        return mathPow$1(this.base, val);
    },

    /**
     * @param {number} start
     * @param {number} end
     */
    setExtent: function (start, end) {
        var base = this.base;
        start = mathLog(start) / mathLog(base);
        end = mathLog(end) / mathLog(base);
        intervalScaleProto$1.setExtent.call(this, start, end);
    },

    /**
     * @return {number} end
     */
    getExtent: function () {
        var base = this.base;
        var extent = scaleProto$1.getExtent.call(this);
        extent[0] = mathPow$1(base, extent[0]);
        extent[1] = mathPow$1(base, extent[1]);

        // Fix #4158
        var originalScale = this._originalScale;
        var originalExtent = originalScale.getExtent();
        originalScale.__fixMin && (extent[0] = fixRoundingError(extent[0], originalExtent[0]));
        originalScale.__fixMax && (extent[1] = fixRoundingError(extent[1], originalExtent[1]));

        return extent;
    },

    /**
     * @param  {Array.<number>} extent
     */
    unionExtent: function (extent) {
        this._originalScale.unionExtent(extent);

        var base = this.base;
        extent[0] = mathLog(extent[0]) / mathLog(base);
        extent[1] = mathLog(extent[1]) / mathLog(base);
        scaleProto$1.unionExtent.call(this, extent);
    },

    /**
     * @override
     */
    unionExtentFromData: function (data, dim) {
        // TODO
        // filter value that <= 0
        this.unionExtent(data.getApproximateExtent(dim));
    },

    /**
     * Update interval and extent of intervals for nice ticks
     * @param  {number} [approxTickNum = 10] Given approx tick number
     */
    niceTicks: function (approxTickNum) {
        approxTickNum = approxTickNum || 10;
        var extent = this._extent;
        var span = extent[1] - extent[0];
        if (span === Infinity || span <= 0) {
            return;
        }

        var interval = quantity(span);
        var err = approxTickNum / span * interval;

        // Filter ticks to get closer to the desired count.
        if (err <= 0.5) {
            interval *= 10;
        }

        // Interval should be integer
        while (!isNaN(interval) && Math.abs(interval) < 1 && Math.abs(interval) > 0) {
            interval *= 10;
        }

        var niceExtent = [
            round$1(mathCeil$1(extent[0] / interval) * interval),
            round$1(mathFloor$1(extent[1] / interval) * interval)
        ];

        this._interval = interval;
        this._niceExtent = niceExtent;
    },

    /**
     * Nice extent.
     * @override
     */
    niceExtent: function (opt) {
        intervalScaleProto$1.niceExtent.call(this, opt);

        var originalScale = this._originalScale;
        originalScale.__fixMin = opt.fixMin;
        originalScale.__fixMax = opt.fixMax;
    }

});

each$1(['contain', 'normalize'], function (methodName) {
    LogScale.prototype[methodName] = function (val) {
        val = mathLog(val) / mathLog(this.base);
        return scaleProto$1[methodName].call(this, val);
    };
});

LogScale.create = function () {
    return new LogScale();
};

function fixRoundingError(val, originalVal) {
    return roundingErrorFix(val, getPrecisionSafe$1(originalVal));
}

/**
 * Get axis scale extent before niced.
 * Item of returned array can only be number (including Infinity and NaN).
 */
function getScaleExtent(scale, model) {
    var scaleType = scale.type;

    var min = model.getMin();
    var max = model.getMax();
    var fixMin = min != null;
    var fixMax = max != null;
    var originalExtent = scale.getExtent();

    var axisDataLen;
    var boundaryGap;
    var span;
    if (scaleType === 'ordinal') {
        axisDataLen = model.getCategories().length;
    }
    else {
        boundaryGap = model.get('boundaryGap');
        if (!isArray(boundaryGap)) {
            boundaryGap = [boundaryGap || 0, boundaryGap || 0];
        }
        if (typeof boundaryGap[0] === 'boolean') {
            if (__DEV__) {
                console.warn('Boolean type for boundaryGap is only '
                    + 'allowed for ordinal axis. Please use string in '
                    + 'percentage instead, e.g., "20%". Currently, '
                    + 'boundaryGap is set to be 0.');
            }
            boundaryGap = [0, 0];
        }
        boundaryGap[0] = parsePercent$1(boundaryGap[0], 1);
        boundaryGap[1] = parsePercent$1(boundaryGap[1], 1);
        span = (originalExtent[1] - originalExtent[0])
            || Math.abs(originalExtent[0]);
    }

    // Notice: When min/max is not set (that is, when there are null/undefined,
    // which is the most common case), these cases should be ensured:
    // (1) For 'ordinal', show all axis.data.
    // (2) For others:
    //      + `boundaryGap` is applied (if min/max set, boundaryGap is
    //      disabled).
    //      + If `needCrossZero`, min/max should be zero, otherwise, min/max should
    //      be the result that originalExtent enlarged by boundaryGap.
    // (3) If no data, it should be ensured that `scale.setBlank` is set.

    // FIXME
    // (1) When min/max is 'dataMin' or 'dataMax', should boundaryGap be able to used?
    // (2) When `needCrossZero` and all data is positive/negative, should it be ensured
    // that the results processed by boundaryGap are positive/negative?

    if (min == null) {
        min = scaleType === 'ordinal'
            ? (axisDataLen ? 0 : NaN)
            : originalExtent[0] - boundaryGap[0] * span;
    }
    if (max == null) {
        max = scaleType === 'ordinal'
            ? (axisDataLen ? axisDataLen - 1 : NaN)
            : originalExtent[1] + boundaryGap[1] * span;
    }

    if (min === 'dataMin') {
        min = originalExtent[0];
    }
    else if (typeof min === 'function') {
        min = min({
            min: originalExtent[0],
            max: originalExtent[1]
        });
    }

    if (max === 'dataMax') {
        max = originalExtent[1];
    }
    else if (typeof max === 'function') {
        max = max({
            min: originalExtent[0],
            max: originalExtent[1]
        });
    }

    (min == null || !isFinite(min)) && (min = NaN);
    (max == null || !isFinite(max)) && (max = NaN);

    scale.setBlank(eqNaN(min) || eqNaN(max));

    // Evaluate if axis needs cross zero
    if (model.getNeedCrossZero()) {
        // Axis is over zero and min is not set
        if (min > 0 && max > 0 && !fixMin) {
            min = 0;
        }
        // Axis is under zero and max is not set
        if (min < 0 && max < 0 && !fixMax) {
            max = 0;
        }
    }

    // If bars are placed on a base axis of type time or interval account for axis boundary overflow and current axis
    // is base axis
    // FIXME
    // (1) Consider support value axis, where below zero and axis `onZero` should be handled properly.
    // (2) Refactor the logic with `barGrid`. Is it not need to `calBarWidthAndOffset` twice with different extent?
    //     Should not depend on series type `bar`?
    // (3) Fix that might overlap when using dataZoom.
    // (4) Consider other chart types using `barGrid`?
    // See #6728, #4862, `test/bar-overflow-time-plot.html`
    var ecModel = model.ecModel;
    if (ecModel && (scaleType === 'time' /*|| scaleType === 'interval' */)) {
        var barSeriesModels = [];
        var isBaseAxisAndHasBarSeries;

        ecModel.eachSeriesByType('bar', function (seriesModel) {
            if (seriesModel.coordinateSystem && seriesModel.coordinateSystem.type === 'cartesian2d') {
                barSeriesModels.push(seriesModel);
                isBaseAxisAndHasBarSeries |= seriesModel.getBaseAxis() === model.axis;
            }
        });

        if (isBaseAxisAndHasBarSeries) {
            // Adjust axis min and max to account for overflow
            var adjustedScale = adjustScaleForOverflow(min, max, model, barSeriesModels);
            min = adjustedScale.min;
            max = adjustedScale.max;
        }
    }

    return [min, max];
}

function adjustScaleForOverflow(min, max, model, barSeriesModels) {

    // Get Axis Length
    var axisExtent = model.axis.getExtent();
    var axisLength = axisExtent[1] - axisExtent[0];

    // Calculate placement of bars on axis
    var barWidthAndOffset = calBarWidthAndOffset(barSeriesModels);

    // Get bars on current base axis and calculate min and max overflow
    var baseAxisKey = model.axis.dim + model.axis.index;
    var barsOnCurrentAxis = barWidthAndOffset[baseAxisKey];
    if (barsOnCurrentAxis === undefined) {
        return {min: min, max: max};
    }

    var minOverflow = Infinity;
    each$1(barsOnCurrentAxis, function (item) {
        minOverflow = Math.min(item.offset, minOverflow);
    });
    var maxOverflow = -Infinity;
    each$1(barsOnCurrentAxis, function (item) {
        maxOverflow = Math.max(item.offset + item.width, maxOverflow);
    });
    minOverflow = Math.abs(minOverflow);
    maxOverflow = Math.abs(maxOverflow);
    var totalOverFlow = minOverflow + maxOverflow;

    // Calulate required buffer based on old range and overflow
    var oldRange = max - min;
    var oldRangePercentOfNew = (1 - (minOverflow + maxOverflow) / axisLength);
    var overflowBuffer = ((oldRange / oldRangePercentOfNew) - oldRange);

    max += overflowBuffer * (maxOverflow / totalOverFlow);
    min -= overflowBuffer * (minOverflow / totalOverFlow);

    return {min: min, max: max};
}

function niceScaleExtent$1(scale, model) {
    var extent = getScaleExtent(scale, model);
    var fixMin = model.getMin() != null;
    var fixMax = model.getMax() != null;
    var splitNumber = model.get('splitNumber');

    if (scale.type === 'log') {
        scale.base = model.get('logBase');
    }

    var scaleType = scale.type;
    scale.setExtent(extent[0], extent[1]);
    scale.niceExtent({
        splitNumber: splitNumber,
        fixMin: fixMin,
        fixMax: fixMax,
        minInterval: (scaleType === 'interval' || scaleType === 'time')
            ? model.get('minInterval') : null,
        maxInterval: (scaleType === 'interval' || scaleType === 'time')
            ? model.get('maxInterval') : null
    });

    // If some one specified the min, max. And the default calculated interval
    // is not good enough. He can specify the interval. It is often appeared
    // in angle axis with angle 0 - 360. Interval calculated in interval scale is hard
    // to be 60.
    // FIXME
    var interval = model.get('interval');
    if (interval != null) {
        scale.setInterval && scale.setInterval(interval);
    }
}

/**
 * @param {module:echarts/model/Model} model
 * @param {string} [axisType] Default retrieve from model.type
 * @return {module:echarts/scale/*}
 */
function createScaleByModel(model, axisType) {
    axisType = axisType || model.get('type');
    if (axisType) {
        switch (axisType) {
            // Buildin scale
            case 'category':
                return new OrdinalScale(
                    model.getOrdinalMeta
                        ? model.getOrdinalMeta()
                        : model.getCategories(),
                    [Infinity, -Infinity]
                );
            case 'value':
                return new IntervalScale();
            // Extended scale, like time and log
            default:
                return (Scale.getClass(axisType) || IntervalScale).create(model);
        }
    }
}

/**
 * Check if the axis corss 0
 */
function ifAxisCrossZero$1(axis) {
    var dataExtent = axis.scale.getExtent();
    var min = dataExtent[0];
    var max = dataExtent[1];
    return !((min > 0 && max > 0) || (min < 0 && max < 0));
}

/**
 * @param {Array.<number>} tickCoords In axis self coordinate.
 * @param {Array.<string>} labels
 * @param {string} font
 * @param {number} axisRotate 0: towards right horizontally, clock-wise is negative.
 * @param {number} [labelRotate=0] 0: towards right horizontally, clock-wise is negative.
 * @return {number}
 */
function getAxisLabelInterval(tickCoords, labels, font, axisRotate, labelRotate) {
    var textSpaceTakenRect;
    var autoLabelInterval = 0;
    var accumulatedLabelInterval = 0;
    var rotation = (axisRotate - labelRotate) / 180 * Math.PI;

    var step = 1;
    if (labels.length > 40) {
        // Simple optimization for large amount of labels
        step = Math.floor(labels.length / 40);
    }

    for (var i = 0; i < tickCoords.length; i += step) {
        var tickCoord = tickCoords[i];

        // Not precise, do not consider align and vertical align
        // and each distance from axis line yet.
        var rect = getBoundingRect(
            labels[i], font, 'center', 'top'
        );
        rect.x += tickCoord * Math.cos(rotation);
        rect.y += tickCoord * Math.sin(rotation);

        // Magic number
        rect.width *= 1.3;
        rect.height *= 1.3;

        if (!textSpaceTakenRect) {
            textSpaceTakenRect = rect.clone();
        }
        // There is no space for current label;
        else if (textSpaceTakenRect.intersect(rect)) {
            accumulatedLabelInterval++;
            autoLabelInterval = Math.max(autoLabelInterval, accumulatedLabelInterval);
        }
        else {
            textSpaceTakenRect.union(rect);
            // Reset
            accumulatedLabelInterval = 0;
        }
    }
    if (autoLabelInterval === 0 && step > 1) {
        return step;
    }
    return (autoLabelInterval + 1) * step - 1;
}

/**
 * @param {Object} axis
 * @param {Function} labelFormatter
 * @return {Array.<string>}
 */
function getFormattedLabels(axis, labelFormatter) {
    var scale = axis.scale;
    var labels = scale.getTicksLabels();
    var ticks = scale.getTicks();
    if (typeof labelFormatter === 'string') {
        labelFormatter = (function (tpl) {
            return function (val) {
                return tpl.replace('{value}', val != null ? val : '');
            };
        })(labelFormatter);
        // Consider empty array
        return map(labels, labelFormatter);
    }
    else if (typeof labelFormatter === 'function') {
        return map(ticks, function (tick, idx) {
            return labelFormatter(
                getAxisRawValue(axis, tick),
                idx
            );
        }, this);
    }
    else {
        return labels;
    }
}

function getAxisRawValue(axis, value) {
    // In category axis with data zoom, tick is not the original
    // index of axis.data. So tick should not be exposed to user
    // in category axis.
    return axis.type === 'category' ? axis.scale.getLabel(value) : value;
}

/**
 * Cartesian coordinate system
 * @module  echarts/coord/Cartesian
 *
 */

function dimAxisMapper(dim) {
    return this._axes[dim];
}

/**
 * @alias module:echarts/coord/Cartesian
 * @constructor
 */
var Cartesian = function (name) {
    this._axes = {};

    this._dimList = [];

    /**
     * @type {string}
     */
    this.name = name || '';
};

Cartesian.prototype = {

    constructor: Cartesian,

    type: 'cartesian',

    /**
     * Get axis
     * @param  {number|string} dim
     * @return {module:echarts/coord/Cartesian~Axis}
     */
    getAxis: function (dim) {
        return this._axes[dim];
    },

    /**
     * Get axes list
     * @return {Array.<module:echarts/coord/Cartesian~Axis>}
     */
    getAxes: function () {
        return map(this._dimList, dimAxisMapper, this);
    },

    /**
     * Get axes list by given scale type
     */
    getAxesByScale: function (scaleType) {
        scaleType = scaleType.toLowerCase();
        return filter(
            this.getAxes(),
            function (axis) {
                return axis.scale.type === scaleType;
            }
        );
    },

    /**
     * Add axis
     * @param {module:echarts/coord/Cartesian.Axis}
     */
    addAxis: function (axis) {
        var dim = axis.dim;

        this._axes[dim] = axis;

        this._dimList.push(dim);
    },

    /**
     * Convert data to coord in nd space
     * @param {Array.<number>|Object.<string, number>} val
     * @return {Array.<number>|Object.<string, number>}
     */
    dataToCoord: function (val) {
        return this._dataCoordConvert(val, 'dataToCoord');
    },

    /**
     * Convert coord in nd space to data
     * @param  {Array.<number>|Object.<string, number>} val
     * @return {Array.<number>|Object.<string, number>}
     */
    coordToData: function (val) {
        return this._dataCoordConvert(val, 'coordToData');
    },

    _dataCoordConvert: function (input, method) {
        var dimList = this._dimList;

        var output = input instanceof Array ? [] : {};

        for (var i = 0; i < dimList.length; i++) {
            var dim = dimList[i];
            var axis = this._axes[dim];

            output[dim] = axis[method](input[dim]);
        }

        return output;
    }
};

function Cartesian2D(name) {

    Cartesian.call(this, name);
}

Cartesian2D.prototype = {

    constructor: Cartesian2D,

    type: 'cartesian2d',

    /**
     * @type {Array.<string>}
     * @readOnly
     */
    dimensions: ['x', 'y'],

    /**
     * Base axis will be used on stacking.
     *
     * @return {module:echarts/coord/cartesian/Axis2D}
     */
    getBaseAxis: function () {
        return this.getAxesByScale('ordinal')[0]
            || this.getAxesByScale('time')[0]
            || this.getAxis('x');
    },

    /**
     * If contain point
     * @param {Array.<number>} point
     * @return {boolean}
     */
    containPoint: function (point) {
        var axisX = this.getAxis('x');
        var axisY = this.getAxis('y');
        return axisX.contain(axisX.toLocalCoord(point[0]))
            && axisY.contain(axisY.toLocalCoord(point[1]));
    },

    /**
     * If contain data
     * @param {Array.<number>} data
     * @return {boolean}
     */
    containData: function (data) {
        return this.getAxis('x').containData(data[0])
            && this.getAxis('y').containData(data[1]);
    },

    /**
     * @param {Array.<number>} data
     * @param {Array.<number>} out
     * @return {Array.<number>}
     */
    dataToPoint: function (data, reserved, out) {
        var xAxis = this.getAxis('x');
        var yAxis = this.getAxis('y');
        out = out || [];
        out[0] = xAxis.toGlobalCoord(xAxis.dataToCoord(data[0]));
        out[1] = yAxis.toGlobalCoord(yAxis.dataToCoord(data[1]));
        return out;
    },

    /**
     * @param {Array.<number>} data
     * @param {Array.<number>} out
     * @return {Array.<number>}
     */
    clampData: function (data, out) {
        var xAxisExtent = this.getAxis('x').scale.getExtent();
        var yAxisExtent = this.getAxis('y').scale.getExtent();
        out = out || [];
        out[0] = Math.min(
            Math.max(Math.min(xAxisExtent[0], xAxisExtent[1]), data[0]),
            Math.max(xAxisExtent[0], xAxisExtent[1])
        );
        out[1] = Math.min(
            Math.max(Math.min(yAxisExtent[0], yAxisExtent[1]), data[1]),
            Math.max(yAxisExtent[0], yAxisExtent[1])
        );

        return out;
    },

    /**
     * @param {Array.<number>} point
     * @param {Array.<number>} out
     * @return {Array.<number>}
     */
    pointToData: function (point, out) {
        var xAxis = this.getAxis('x');
        var yAxis = this.getAxis('y');
        out = out || [];
        out[0] = xAxis.coordToData(xAxis.toLocalCoord(point[0]));
        out[1] = yAxis.coordToData(yAxis.toLocalCoord(point[1]));
        return out;
    },

    /**
     * Get other axis
     * @param {module:echarts/coord/cartesian/Axis2D} axis
     */
    getOtherAxis: function (axis) {
        return this.getAxis(axis.dim === 'x' ? 'y' : 'x');
    }

};

inherits(Cartesian2D, Cartesian);

var linearMap$1 = linearMap;

function fixExtentWithBands(extent, nTick) {
    var size = extent[1] - extent[0];
    var len = nTick;
    var margin = size / len / 2;
    extent[0] += margin;
    extent[1] -= margin;
}

var normalizedExtent = [0, 1];
/**
 * @name module:echarts/coord/CartesianAxis
 * @constructor
 */
var Axis = function (dim, scale, extent) {

    /**
     * Axis dimension. Such as 'x', 'y', 'z', 'angle', 'radius'
     * @type {string}
     */
    this.dim = dim;

    /**
     * Axis scale
     * @type {module:echarts/coord/scale/*}
     */
    this.scale = scale;

    /**
     * @type {Array.<number>}
     * @private
     */
    this._extent = extent || [0, 0];

    /**
     * @type {boolean}
     */
    this.inverse = false;

    /**
     * Usually true when axis has a ordinal scale
     * @type {boolean}
     */
    this.onBand = false;

    /**
     * @private
     * @type {number}
     */
    this._labelInterval;
};

Axis.prototype = {

    constructor: Axis,

    /**
     * If axis extent contain given coord
     * @param {number} coord
     * @return {boolean}
     */
    contain: function (coord) {
        var extent = this._extent;
        var min = Math.min(extent[0], extent[1]);
        var max = Math.max(extent[0], extent[1]);
        return coord >= min && coord <= max;
    },

    /**
     * If axis extent contain given data
     * @param {number} data
     * @return {boolean}
     */
    containData: function (data) {
        return this.contain(this.dataToCoord(data));
    },

    /**
     * Get coord extent.
     * @return {Array.<number>}
     */
    getExtent: function () {
        return this._extent.slice();
    },

    /**
     * Get precision used for formatting
     * @param {Array.<number>} [dataExtent]
     * @return {number}
     */
    getPixelPrecision: function (dataExtent) {
        return getPixelPrecision(
            dataExtent || this.scale.getExtent(),
            this._extent
        );
    },

    /**
     * Set coord extent
     * @param {number} start
     * @param {number} end
     */
    setExtent: function (start, end) {
        var extent = this._extent;
        extent[0] = start;
        extent[1] = end;
    },

    /**
     * Convert data to coord. Data is the rank if it has an ordinal scale
     * @param {number} data
     * @param  {boolean} clamp
     * @return {number}
     */
    dataToCoord: function (data, clamp) {
        var extent = this._extent;
        var scale = this.scale;
        data = scale.normalize(data);

        if (this.onBand && scale.type === 'ordinal') {
            extent = extent.slice();
            fixExtentWithBands(extent, scale.count());
        }

        return linearMap$1(data, normalizedExtent, extent, clamp);
    },

    /**
     * Convert coord to data. Data is the rank if it has an ordinal scale
     * @param {number} coord
     * @param  {boolean} clamp
     * @return {number}
     */
    coordToData: function (coord, clamp) {
        var extent = this._extent;
        var scale = this.scale;

        if (this.onBand && scale.type === 'ordinal') {
            extent = extent.slice();
            fixExtentWithBands(extent, scale.count());
        }

        var t = linearMap$1(coord, extent, normalizedExtent, clamp);

        return this.scale.scale(t);
    },

    /**
     * Convert pixel point to data in axis
     * @param {Array.<number>} point
     * @param  {boolean} clamp
     * @return {number} data
     */
    pointToData: function (point, clamp) {
        // Should be implemented in derived class if necessary.
    },

    /**
     * @return {Array.<number>}
     */
    getTicksCoords: function (alignWithLabel) {
        if (this.onBand && !alignWithLabel) {
            var bands = this.getBands();
            var coords = [];
            for (var i = 0; i < bands.length; i++) {
                coords.push(bands[i][0]);
            }
            if (bands[i - 1]) {
                coords.push(bands[i - 1][1]);
            }
            return coords;
        }
        else {
            return map(this.scale.getTicks(), this.dataToCoord, this);
        }
    },

    /**
     * Coords of labels are on the ticks or on the middle of bands
     * @return {Array.<number>}
     */
    getLabelsCoords: function () {
        return map(this.scale.getTicks(), this.dataToCoord, this);
    },

    /**
     * Get bands.
     *
     * If axis has labels [1, 2, 3, 4]. Bands on the axis are
     * |---1---|---2---|---3---|---4---|.
     *
     * @return {Array}
     */
        // FIXME Situation when labels is on ticks
    getBands: function () {
        var extent = this.getExtent();
        var bands = [];
        var len = this.scale.count();
        var start = extent[0];
        var end = extent[1];
        var span = end - start;

        for (var i = 0; i < len; i++) {
            bands.push([
                span * i / len + start,
                span * (i + 1) / len + start
            ]);
        }
        return bands;
    },

    /**
     * Get width of band
     * @return {number}
     */
    getBandWidth: function () {
        var axisExtent = this._extent;
        var dataExtent = this.scale.getExtent();

        var len = dataExtent[1] - dataExtent[0] + (this.onBand ? 1 : 0);
        // Fix #2728, avoid NaN when only one data.
        len === 0 && (len = 1);

        var size = Math.abs(axisExtent[1] - axisExtent[0]);

        return Math.abs(size) / len;
    },

    /**
     * @abstract
     * @return {boolean} Is horizontal
     */
    isHorizontal: null,

    /**
     * @abstract
     * @return {number} Get axis rotate, by degree.
     */
    getRotate: null,

    /**
     * Get interval of the axis label.
     * To get precise result, at least one of `getRotate` and `isHorizontal`
     * should be implemented.
     * @return {number}
     */
    getLabelInterval: function () {
        var labelInterval = this._labelInterval;
        if (!labelInterval) {
            var axisModel = this.model;
            var labelModel = axisModel.getModel('axisLabel');
            labelInterval = labelModel.get('interval');

            if (this.type === 'category'
                && (labelInterval == null || labelInterval === 'auto')
            ) {
                labelInterval = getAxisLabelInterval(
                    map(this.scale.getTicks(), this.dataToCoord, this),
                    axisModel.getFormattedLabels(),
                    labelModel.getFont(),
                    this.getRotate
                        ? this.getRotate()
                        : (this.isHorizontal && !this.isHorizontal())
                        ? 90
                        : 0,
                    labelModel.get('rotate')
                );
            }

            this._labelInterval = labelInterval;
        }
        return labelInterval;
    }

};

/**
 * Extend axis 2d
 * @constructor module:echarts/coord/cartesian/Axis2D
 * @extends {module:echarts/coord/cartesian/Axis}
 * @param {string} dim
 * @param {*} scale
 * @param {Array.<number>} coordExtent
 * @param {string} axisType
 * @param {string} position
 */
var Axis2D = function (dim, scale, coordExtent, axisType, position) {
    Axis.call(this, dim, scale, coordExtent);
    /**
     * Axis type
     *  - 'category'
     *  - 'value'
     *  - 'time'
     *  - 'log'
     * @type {string}
     */
    this.type = axisType || 'value';

    /**
     * Axis position
     *  - 'top'
     *  - 'bottom'
     *  - 'left'
     *  - 'right'
     */
    this.position = position || 'bottom';
};

Axis2D.prototype = {

    constructor: Axis2D,

    /**
     * Index of axis, can be used as key
     */
    index: 0,
    /**
     * If axis is on the zero position of the other axis
     * @type {boolean}
     */
    onZero: false,

    /**
     * Axis model
     * @param {module:echarts/coord/cartesian/AxisModel}
     */
    model: null,

    isHorizontal: function () {
        var position = this.position;
        return position === 'top' || position === 'bottom';
    },

    /**
     * Each item cooresponds to this.getExtent(), which
     * means globalExtent[0] may greater than globalExtent[1],
     * unless `asc` is input.
     *
     * @param {boolean} [asc]
     * @return {Array.<number>}
     */
    getGlobalExtent: function (asc) {
        var ret = this.getExtent();
        ret[0] = this.toGlobalCoord(ret[0]);
        ret[1] = this.toGlobalCoord(ret[1]);
        asc && ret[0] > ret[1] && ret.reverse();
        return ret;
    },

    getOtherAxis: function () {
        this.grid.getOtherAxis();
    },

    /**
     * If label is ignored.
     * Automatically used when axis is category and label can not be all shown
     * @param  {number}  idx
     * @return {boolean}
     */
    isLabelIgnored: function (idx) {
        if (this.type === 'category') {
            var labelInterval = this.getLabelInterval();
            return ((typeof labelInterval === 'function')
                && !labelInterval(idx, this.scale.getLabel(idx)))
                || idx % (labelInterval + 1);
        }
    },

    /**
     * @override
     */
    pointToData: function (point, clamp) {
        return this.coordToData(this.toLocalCoord(point[this.dim === 'x' ? 0 : 1]), clamp);
    },

    /**
     * Transform global coord to local coord,
     * i.e. var localCoord = axis.toLocalCoord(80);
     * designate by module:echarts/coord/cartesian/Grid.
     * @type {Function}
     */
    toLocalCoord: null,

    /**
     * Transform global coord to local coord,
     * i.e. var globalCoord = axis.toLocalCoord(40);
     * designate by module:echarts/coord/cartesian/Grid.
     * @type {Function}
     */
    toGlobalCoord: null

};

inherits(Axis2D, Axis);

var defaultOption = {
    show: true,
    zlevel: 0,                  // 一级层叠
    z: 0,                       // 二级层叠
    // 反向坐标轴
    inverse: false,

    // 坐标轴名字，默认为空
    name: '',
    // 坐标轴名字位置，支持'start' | 'middle' | 'end'
    nameLocation: 'end',
    // 坐标轴名字旋转，degree。
    nameRotate: null, // Adapt to axis rotate, when nameLocation is 'middle'.
    nameTruncate: {
        maxWidth: null,
        ellipsis: '...',
        placeholder: '.'
    },
    // 坐标轴文字样式，默认取全局样式
    nameTextStyle: {},
    // 文字与轴线距离
    nameGap: 15,

    silent: false, // Default false to support tooltip.
    triggerEvent: false, // Default false to avoid legacy user event listener fail.

    tooltip: {
        show: false
    },

    axisPointer: {},

    // 坐标轴线
    axisLine: {
        // 默认显示，属性show控制显示与否
        show: true,
        onZero: true,
        onZeroAxisIndex: null,
        // 属性lineStyle控制线条样式
        lineStyle: {
            color: '#333',
            width: 1,
            type: 'solid'
        },
        // 坐标轴两端的箭头
        symbol: ['none', 'none'],
        symbolSize: [10, 15]
    },
    // 坐标轴小标记
    axisTick: {
        // 属性show控制显示与否，默认显示
        show: true,
        // 控制小标记是否在grid里
        inside: false,
        // 属性length控制线长
        length: 5,
        // 属性lineStyle控制线条样式
        lineStyle: {
            width: 1
        }
    },
    // 坐标轴文本标签，详见axis.axisLabel
    axisLabel: {
        show: true,
        // 控制文本标签是否在grid里
        inside: false,
        rotate: 0,
        showMinLabel: null, // true | false | null (auto)
        showMaxLabel: null, // true | false | null (auto)
        margin: 8,
        // formatter: null,
        // 其余属性默认使用全局文本样式，详见TEXTSTYLE
        fontSize: 12
    },
    // 分隔线
    splitLine: {
        // 默认显示，属性show控制显示与否
        show: true,
        // 属性lineStyle（详见lineStyle）控制线条样式
        lineStyle: {
            color: ['#ccc'],
            width: 1,
            type: 'solid'
        }
    },
    // 分隔区域
    splitArea: {
        // 默认不显示，属性show控制显示与否
        show: false,
        // 属性areaStyle（详见areaStyle）控制区域样式
        areaStyle: {
            color: ['rgba(250,250,250,0.3)','rgba(200,200,200,0.3)']
        }
    }
};

var axisDefault = {};

axisDefault.categoryAxis = merge({
    // 类目起始和结束两端空白策略
    boundaryGap: true,
    // Set false to faster category collection.
    // Only usefull in the case like: category is
    // ['2012-01-01', '2012-01-02', ...], where the input
    // data has been ensured not duplicate and is large data.
    // null means "auto":
    // if axis.data provided, do not deduplication,
    // else do deduplication.
    deduplication: null,
    // splitArea: {
        // show: false
    // },
    splitLine: {
        show: false
    },
    // 坐标轴小标记
    axisTick: {
        // If tick is align with label when boundaryGap is true
        alignWithLabel: false,
        interval: 'auto'
    },
    // 坐标轴文本标签，详见axis.axisLabel
    axisLabel: {
        interval: 'auto'
    }
}, defaultOption);

axisDefault.valueAxis = merge({
    // 数值起始和结束两端空白策略
    boundaryGap: [0, 0],

    // TODO
    // min/max: [30, datamin, 60] or [20, datamin] or [datamin, 60]

    // 最小值, 设置成 'dataMin' 则从数据中计算最小值
    // min: null,
    // 最大值，设置成 'dataMax' 则从数据中计算最大值
    // max: null,
    // Readonly prop, specifies start value of the range when using data zoom.
    // rangeStart: null
    // Readonly prop, specifies end value of the range when using data zoom.
    // rangeEnd: null
    // 脱离0值比例，放大聚焦到最终_min，_max区间
    // scale: false,
    // 分割段数，默认为5
    splitNumber: 5
    // Minimum interval
    // minInterval: null
    // maxInterval: null
}, defaultOption);

// FIXME
axisDefault.timeAxis = defaults({
    scale: true,
    min: 'dataMin',
    max: 'dataMax'
}, axisDefault.valueAxis);

axisDefault.logAxis = defaults({
    scale: true,
    logBase: 10
}, axisDefault.valueAxis);

// FIXME axisType is fixed ?
var AXIS_TYPES = ['value', 'category', 'time', 'log'];

/**
 * Generate sub axis model class
 * @param {string} axisName 'x' 'y' 'radius' 'angle' 'parallel'
 * @param {module:echarts/model/Component} BaseAxisModelClass
 * @param {Function} axisTypeDefaulter
 * @param {Object} [extraDefaultOption]
 */
var axisModelCreator = function (axisName, BaseAxisModelClass, axisTypeDefaulter, extraDefaultOption) {

    each$1(AXIS_TYPES, function (axisType) {

        BaseAxisModelClass.extend({

            /**
             * @readOnly
             */
            type: axisName + 'Axis.' + axisType,

            mergeDefaultAndTheme: function (option, ecModel) {
                var layoutMode = this.layoutMode;
                var inputPositionParams = layoutMode
                    ? getLayoutParams(option) : {};

                var themeModel = ecModel.getTheme();
                merge(option, themeModel.get(axisType + 'Axis'));
                merge(option, this.getDefaultOption());

                option.type = axisTypeDefaulter(axisName, option);

                if (layoutMode) {
                    mergeLayoutParam(option, inputPositionParams, layoutMode);
                }
            },

            /**
             * @override
             */
            optionUpdated: function () {
                var thisOption = this.option;
                if (thisOption.type === 'category') {
                    this.__ordinalMeta = OrdinalMeta.createByAxisModel(this);
                }
            },

            /**
             * Should not be called before all of 'getInitailData' finished.
             * Because categories are collected during initializing data.
             */
            getCategories: function () {
                // FIXME
                // warning if called before all of 'getInitailData' finished.
                if (this.option.type === 'category') {
                    return this.__ordinalMeta.categories;
                }
            },

            getOrdinalMeta: function () {
                return this.__ordinalMeta;
            },

            defaultOption: mergeAll(
                [
                    {},
                    axisDefault[axisType + 'Axis'],
                    extraDefaultOption
                ],
                true
            )
        });
    });

    ComponentModel.registerSubTypeDefaulter(
        axisName + 'Axis',
        curry(axisTypeDefaulter, axisName)
    );
};

var axisModelCommonMixin = {

    /**
     * Format labels
     * @return {Array.<string>}
     */
    getFormattedLabels: function () {
        return getFormattedLabels(
            this.axis,
            this.get('axisLabel.formatter')
        );
    },

    /**
     * @param {boolean} origin
     * @return {number|string} min value or 'dataMin' or null/undefined (means auto) or NaN
     */
    getMin: function (origin) {
        var option = this.option;
        var min = (!origin && option.rangeStart != null)
            ? option.rangeStart : option.min;

        if (this.axis
            && min != null
            && min !== 'dataMin'
            && typeof min !== 'function'
            && !eqNaN(min)
        ) {
            min = this.axis.scale.parse(min);
        }
        return min;
    },

    /**
     * @param {boolean} origin
     * @return {number|string} max value or 'dataMax' or null/undefined (means auto) or NaN
     */
    getMax: function (origin) {
        var option = this.option;
        var max = (!origin && option.rangeEnd != null)
            ? option.rangeEnd : option.max;

        if (this.axis
            && max != null
            && max !== 'dataMax'
            && typeof max !== 'function'
            && !eqNaN(max)
        ) {
            max = this.axis.scale.parse(max);
        }
        return max;
    },

    /**
     * @return {boolean}
     */
    getNeedCrossZero: function () {
        var option = this.option;
        return (option.rangeStart != null || option.rangeEnd != null)
            ? false : !option.scale;
    },

    /**
     * Should be implemented by each axis model if necessary.
     * @return {module:echarts/model/Component} coordinate system model
     */
    getCoordSysModel: noop,

    /**
     * @param {number} rangeStart Can only be finite number or null/undefined or NaN.
     * @param {number} rangeEnd Can only be finite number or null/undefined or NaN.
     */
    setRange: function (rangeStart, rangeEnd) {
        this.option.rangeStart = rangeStart;
        this.option.rangeEnd = rangeEnd;
    },

    /**
     * Reset range
     */
    resetRange: function () {
        // rangeStart and rangeEnd is readonly.
        this.option.rangeStart = this.option.rangeEnd = null;
    }
};

var AxisModel = ComponentModel.extend({

    type: 'cartesian2dAxis',

    /**
     * @type {module:echarts/coord/cartesian/Axis2D}
     */
    axis: null,

    /**
     * @override
     */
    init: function () {
        AxisModel.superApply(this, 'init', arguments);
        this.resetRange();
    },

    /**
     * @override
     */
    mergeOption: function () {
        AxisModel.superApply(this, 'mergeOption', arguments);
        this.resetRange();
    },

    /**
     * @override
     */
    restoreData: function () {
        AxisModel.superApply(this, 'restoreData', arguments);
        this.resetRange();
    },

    /**
     * @override
     * @return {module:echarts/model/Component}
     */
    getCoordSysModel: function () {
        return this.ecModel.queryComponents({
            mainType: 'grid',
            index: this.option.gridIndex,
            id: this.option.gridId
        })[0];
    }

});

function getAxisType(axisDim, option) {
    // Default axis with data is category axis
    return option.type || (option.data ? 'category' : 'value');
}

merge(AxisModel.prototype, axisModelCommonMixin);

var extraOption = {
    // gridIndex: 0,
    // gridId: '',

    // Offset is for multiple axis on the same position
    offset: 0
};

axisModelCreator('x', AxisModel, getAxisType, extraOption);
axisModelCreator('y', AxisModel, getAxisType, extraOption);

// Grid 是在有直角坐标系的时候必须要存在的
// 所以这里也要被 Cartesian2D 依赖

ComponentModel.extend({

    type: 'grid',

    dependencies: ['xAxis', 'yAxis'],

    layoutMode: 'box',

    /**
     * @type {module:echarts/coord/cartesian/Grid}
     */
    coordinateSystem: null,

    defaultOption: {
        show: false,
        zlevel: 0,
        z: 0,
        left: '10%',
        top: 60,
        right: '10%',
        bottom: 60,
        // If grid size contain label
        containLabel: false,
        // width: {totalWidth} - left - right,
        // height: {totalHeight} - top - bottom,
        backgroundColor: 'rgba(0,0,0,0)',
        borderWidth: 1,
        borderColor: '#ccc'
    }
});

/**
 * Grid is a region which contains at most 4 cartesian systems
 *
 * TODO Default cartesian
 */

// Depends on GridModel, AxisModel, which performs preprocess.
var each$6 = each$1;
var ifAxisCrossZero = ifAxisCrossZero$1;
var niceScaleExtent = niceScaleExtent$1;

/**
 * Check if the axis is used in the specified grid
 * @inner
 */
function isAxisUsedInTheGrid(axisModel, gridModel, ecModel) {
    return axisModel.getCoordSysModel() === gridModel;
}

function rotateTextRect(textRect, rotate) {
  var rotateRadians = rotate * Math.PI / 180;
  var boundingBox = textRect.plain();
  var beforeWidth = boundingBox.width;
  var beforeHeight = boundingBox.height;
  var afterWidth = beforeWidth * Math.cos(rotateRadians) + beforeHeight * Math.sin(rotateRadians);
  var afterHeight = beforeWidth * Math.sin(rotateRadians) + beforeHeight * Math.cos(rotateRadians);
  var rotatedRect = new BoundingRect(boundingBox.x, boundingBox.y, afterWidth, afterHeight);

  return rotatedRect;
}

function getLabelUnionRect(axis) {
    var axisModel = axis.model;
    var labels = axisModel.get('axisLabel.show') ? axisModel.getFormattedLabels() : [];
    var axisLabelModel = axisModel.getModel('axisLabel');
    var rect;
    var step = 1;
    var labelCount = labels.length;
    if (labelCount > 40) {
        // Simple optimization for large amount of labels
        step = Math.ceil(labelCount / 40);
    }
    for (var i = 0; i < labelCount; i += step) {
        if (!axis.isLabelIgnored(i)) {
            var unrotatedSingleRect = axisLabelModel.getTextRect(labels[i]);
            var singleRect = rotateTextRect(unrotatedSingleRect, axisLabelModel.get('rotate') || 0);

            rect ? rect.union(singleRect) : (rect = singleRect);
        }
    }
    return rect;
}

function Grid(gridModel, ecModel, api) {
    /**
     * @type {Object.<string, module:echarts/coord/cartesian/Cartesian2D>}
     * @private
     */
    this._coordsMap = {};

    /**
     * @type {Array.<module:echarts/coord/cartesian/Cartesian>}
     * @private
     */
    this._coordsList = [];

    /**
     * @type {Object.<string, module:echarts/coord/cartesian/Axis2D>}
     * @private
     */
    this._axesMap = {};

    /**
     * @type {Array.<module:echarts/coord/cartesian/Axis2D>}
     * @private
     */
    this._axesList = [];

    this._initCartesian(gridModel, ecModel, api);

    this.model = gridModel;
}

var gridProto = Grid.prototype;

gridProto.type = 'grid';

gridProto.axisPointerEnabled = true;

gridProto.getRect = function () {
    return this._rect;
};

gridProto.update = function (ecModel, api) {

    var axesMap = this._axesMap;

    this._updateScale(ecModel, this.model);

    each$6(axesMap.x, function (xAxis) {
        niceScaleExtent(xAxis.scale, xAxis.model);
    });
    each$6(axesMap.y, function (yAxis) {
        niceScaleExtent(yAxis.scale, yAxis.model);
    });
    each$6(axesMap.x, function (xAxis) {
        fixAxisOnZero(axesMap, 'y', xAxis);
    });
    each$6(axesMap.y, function (yAxis) {
        fixAxisOnZero(axesMap, 'x', yAxis);
    });

    // Resize again if containLabel is enabled
    // FIXME It may cause getting wrong grid size in data processing stage
    this.resize(this.model, api);
};

function fixAxisOnZero(axesMap, otherAxisDim, axis) {
    // onZero can not be enabled in these two situations:
    // 1. When any other axis is a category axis.
    // 2. When no axis is cross 0 point.
    var axes = axesMap[otherAxisDim];

    if (!axis.onZero) {
        return;
    }

    var onZeroAxisIndex = axis.onZeroAxisIndex;

    // If target axis is specified.
    if (onZeroAxisIndex != null) {
        var otherAxis = axes[onZeroAxisIndex];
        if (otherAxis && canNotOnZeroToAxis(otherAxis)) {
            axis.onZero = false;
        }
        return;
    }

    for (var idx in axes) {
        if (axes.hasOwnProperty(idx)) {
            var otherAxis = axes[idx];
            if (otherAxis && !canNotOnZeroToAxis(otherAxis)) {
                onZeroAxisIndex = +idx;
                break;
            }
        }
    }

    if (onZeroAxisIndex == null) {
        axis.onZero = false;
    }
    axis.onZeroAxisIndex = onZeroAxisIndex;
}

function canNotOnZeroToAxis(axis) {
    return axis.type === 'category' || axis.type === 'time' || !ifAxisCrossZero(axis);
}

/**
 * Resize the grid
 * @param {module:echarts/coord/cartesian/GridModel} gridModel
 * @param {module:echarts/ExtensionAPI} api
 */
gridProto.resize = function (gridModel, api, ignoreContainLabel) {

    var gridRect = getLayoutRect(
        gridModel.getBoxLayoutParams(), {
            width: api.getWidth(),
            height: api.getHeight()
        });

    this._rect = gridRect;

    var axesList = this._axesList;

    adjustAxes();

    // Minus label size
    if (!ignoreContainLabel && gridModel.get('containLabel')) {
        each$6(axesList, function (axis) {
            if (!axis.model.get('axisLabel.inside')) {
                var labelUnionRect = getLabelUnionRect(axis);
                if (labelUnionRect) {
                    var dim = axis.isHorizontal() ? 'height' : 'width';
                    var margin = axis.model.get('axisLabel.margin');
                    gridRect[dim] -= labelUnionRect[dim] + margin;
                    if (axis.position === 'top') {
                        gridRect.y += labelUnionRect.height + margin;
                    }
                    else if (axis.position === 'left')  {
                        gridRect.x += labelUnionRect.width + margin;
                    }
                }
            }
        });

        adjustAxes();
    }

    function adjustAxes() {
        each$6(axesList, function (axis) {
            var isHorizontal = axis.isHorizontal();
            var extent = isHorizontal ? [0, gridRect.width] : [0, gridRect.height];
            var idx = axis.inverse ? 1 : 0;
            axis.setExtent(extent[idx], extent[1 - idx]);
            updateAxisTransform(axis, isHorizontal ? gridRect.x : gridRect.y);
        });
    }
};

/**
 * @param {string} axisType
 * @param {number} [axisIndex]
 */
gridProto.getAxis = function (axisType, axisIndex) {
    var axesMapOnDim = this._axesMap[axisType];
    if (axesMapOnDim != null) {
        if (axisIndex == null) {
            // Find first axis
            for (var name in axesMapOnDim) {
                if (axesMapOnDim.hasOwnProperty(name)) {
                    return axesMapOnDim[name];
                }
            }
        }
        return axesMapOnDim[axisIndex];
    }
};

/**
 * @return {Array.<module:echarts/coord/Axis>}
 */
gridProto.getAxes = function () {
    return this._axesList.slice();
};

/**
 * Usage:
 *      grid.getCartesian(xAxisIndex, yAxisIndex);
 *      grid.getCartesian(xAxisIndex);
 *      grid.getCartesian(null, yAxisIndex);
 *      grid.getCartesian({xAxisIndex: ..., yAxisIndex: ...});
 *
 * @param {number|Object} [xAxisIndex]
 * @param {number} [yAxisIndex]
 */
gridProto.getCartesian = function (xAxisIndex, yAxisIndex) {
    if (xAxisIndex != null && yAxisIndex != null) {
        var key = 'x' + xAxisIndex + 'y' + yAxisIndex;
        return this._coordsMap[key];
    }

    if (isObject$1(xAxisIndex)) {
        yAxisIndex = xAxisIndex.yAxisIndex;
        xAxisIndex = xAxisIndex.xAxisIndex;
    }
    // When only xAxisIndex or yAxisIndex given, find its first cartesian.
    for (var i = 0, coordList = this._coordsList; i < coordList.length; i++) {
        if (coordList[i].getAxis('x').index === xAxisIndex
            || coordList[i].getAxis('y').index === yAxisIndex
        ) {
            return coordList[i];
        }
    }
};

gridProto.getCartesians = function () {
    return this._coordsList.slice();
};

/**
 * @implements
 * see {module:echarts/CoodinateSystem}
 */
gridProto.convertToPixel = function (ecModel, finder, value) {
    var target = this._findConvertTarget(ecModel, finder);

    return target.cartesian
        ? target.cartesian.dataToPoint(value)
        : target.axis
        ? target.axis.toGlobalCoord(target.axis.dataToCoord(value))
        : null;
};

/**
 * @implements
 * see {module:echarts/CoodinateSystem}
 */
gridProto.convertFromPixel = function (ecModel, finder, value) {
    var target = this._findConvertTarget(ecModel, finder);

    return target.cartesian
        ? target.cartesian.pointToData(value)
        : target.axis
        ? target.axis.coordToData(target.axis.toLocalCoord(value))
        : null;
};

/**
 * @inner
 */
gridProto._findConvertTarget = function (ecModel, finder) {
    var seriesModel = finder.seriesModel;
    var xAxisModel = finder.xAxisModel
        || (seriesModel && seriesModel.getReferringComponents('xAxis')[0]);
    var yAxisModel = finder.yAxisModel
        || (seriesModel && seriesModel.getReferringComponents('yAxis')[0]);
    var gridModel = finder.gridModel;
    var coordsList = this._coordsList;
    var cartesian;
    var axis;

    if (seriesModel) {
        cartesian = seriesModel.coordinateSystem;
        indexOf(coordsList, cartesian) < 0 && (cartesian = null);
    }
    else if (xAxisModel && yAxisModel) {
        cartesian = this.getCartesian(xAxisModel.componentIndex, yAxisModel.componentIndex);
    }
    else if (xAxisModel) {
        axis = this.getAxis('x', xAxisModel.componentIndex);
    }
    else if (yAxisModel) {
        axis = this.getAxis('y', yAxisModel.componentIndex);
    }
    // Lowest priority.
    else if (gridModel) {
        var grid = gridModel.coordinateSystem;
        if (grid === this) {
            cartesian = this._coordsList[0];
        }
    }

    return {cartesian: cartesian, axis: axis};
};

/**
 * @implements
 * see {module:echarts/CoodinateSystem}
 */
gridProto.containPoint = function (point) {
    var coord = this._coordsList[0];
    if (coord) {
        return coord.containPoint(point);
    }
};

/**
 * Initialize cartesian coordinate systems
 * @private
 */
gridProto._initCartesian = function (gridModel, ecModel, api) {
    var axisPositionUsed = {
        left: false,
        right: false,
        top: false,
        bottom: false
    };

    var axesMap = {
        x: {},
        y: {}
    };
    var axesCount = {
        x: 0,
        y: 0
    };

    /// Create axis
    ecModel.eachComponent('xAxis', createAxisCreator('x'), this);
    ecModel.eachComponent('yAxis', createAxisCreator('y'), this);

    if (!axesCount.x || !axesCount.y) {
        // Roll back when there no either x or y axis
        this._axesMap = {};
        this._axesList = [];
        return;
    }

    this._axesMap = axesMap;

    /// Create cartesian2d
    each$6(axesMap.x, function (xAxis, xAxisIndex) {
        each$6(axesMap.y, function (yAxis, yAxisIndex) {
            var key = 'x' + xAxisIndex + 'y' + yAxisIndex;
            var cartesian = new Cartesian2D(key);

            cartesian.grid = this;
            cartesian.model = gridModel;

            this._coordsMap[key] = cartesian;
            this._coordsList.push(cartesian);

            cartesian.addAxis(xAxis);
            cartesian.addAxis(yAxis);
        }, this);
    }, this);

    function createAxisCreator(axisType) {
        return function (axisModel, idx) {
            if (!isAxisUsedInTheGrid(axisModel, gridModel, ecModel)) {
                return;
            }

            var axisPosition = axisModel.get('position');
            if (axisType === 'x') {
                // Fix position
                if (axisPosition !== 'top' && axisPosition !== 'bottom') {
                    // Default bottom of X
                    axisPosition = 'bottom';
                    if (axisPositionUsed[axisPosition]) {
                        axisPosition = axisPosition === 'top' ? 'bottom' : 'top';
                    }
                }
            }
            else {
                // Fix position
                if (axisPosition !== 'left' && axisPosition !== 'right') {
                    // Default left of Y
                    axisPosition = 'left';
                    if (axisPositionUsed[axisPosition]) {
                        axisPosition = axisPosition === 'left' ? 'right' : 'left';
                    }
                }
            }
            axisPositionUsed[axisPosition] = true;

            var axis = new Axis2D(
                axisType, createScaleByModel(axisModel),
                [0, 0],
                axisModel.get('type'),
                axisPosition
            );

            var isCategory = axis.type === 'category';
            axis.onBand = isCategory && axisModel.get('boundaryGap');
            axis.inverse = axisModel.get('inverse');

            axis.onZero = axisModel.get('axisLine.onZero');
            axis.onZeroAxisIndex = axisModel.get('axisLine.onZeroAxisIndex');

            // Inject axis into axisModel
            axisModel.axis = axis;

            // Inject axisModel into axis
            axis.model = axisModel;

            // Inject grid info axis
            axis.grid = this;

            // Index of axis, can be used as key
            axis.index = idx;

            this._axesList.push(axis);

            axesMap[axisType][idx] = axis;
            axesCount[axisType]++;
        };
    }
};

/**
 * Update cartesian properties from series
 * @param  {module:echarts/model/Option} option
 * @private
 */
gridProto._updateScale = function (ecModel, gridModel) {
    // Reset scale
    each$1(this._axesList, function (axis) {
        axis.scale.setExtent(Infinity, -Infinity);
    });
    ecModel.eachSeries(function (seriesModel) {
        if (isCartesian2D(seriesModel)) {
            var axesModels = findAxesModels(seriesModel, ecModel);
            var xAxisModel = axesModels[0];
            var yAxisModel = axesModels[1];

            if (!isAxisUsedInTheGrid(xAxisModel, gridModel, ecModel)
                || !isAxisUsedInTheGrid(yAxisModel, gridModel, ecModel)
            ) {
                return;
            }

            var cartesian = this.getCartesian(
                xAxisModel.componentIndex, yAxisModel.componentIndex
            );
            var data = seriesModel.getData();
            var xAxis = cartesian.getAxis('x');
            var yAxis = cartesian.getAxis('y');

            if (data.type === 'list') {
                unionExtent(data, xAxis, seriesModel);
                unionExtent(data, yAxis, seriesModel);
            }
        }
    }, this);

    function unionExtent(data, axis, seriesModel) {
        each$6(data.mapDimension(axis.dim, true), function (dim) {
            axis.scale.unionExtentFromData(data, dim);
        });
    }
};

/**
 * @param {string} [dim] 'x' or 'y' or 'auto' or null/undefined
 * @return {Object} {baseAxes: [], otherAxes: []}
 */
gridProto.getTooltipAxes = function (dim) {
    var baseAxes = [];
    var otherAxes = [];

    each$6(this.getCartesians(), function (cartesian) {
        var baseAxis = (dim != null && dim !== 'auto')
            ? cartesian.getAxis(dim) : cartesian.getBaseAxis();
        var otherAxis = cartesian.getOtherAxis(baseAxis);
        indexOf(baseAxes, baseAxis) < 0 && baseAxes.push(baseAxis);
        indexOf(otherAxes, otherAxis) < 0 && otherAxes.push(otherAxis);
    });

    return {baseAxes: baseAxes, otherAxes: otherAxes};
};

/**
 * @inner
 */
function updateAxisTransform(axis, coordBase) {
    var axisExtent = axis.getExtent();
    var axisExtentSum = axisExtent[0] + axisExtent[1];

    // Fast transform
    axis.toGlobalCoord = axis.dim === 'x'
        ? function (coord) {
            return coord + coordBase;
        }
        : function (coord) {
            return axisExtentSum - coord + coordBase;
        };
    axis.toLocalCoord = axis.dim === 'x'
        ? function (coord) {
            return coord - coordBase;
        }
        : function (coord) {
            return axisExtentSum - coord + coordBase;
        };
}

var axesTypes = ['xAxis', 'yAxis'];
/**
 * @inner
 */
function findAxesModels(seriesModel, ecModel) {
    return map(axesTypes, function (axisType) {
        var axisModel = seriesModel.getReferringComponents(axisType)[0];

        if (__DEV__) {
            if (!axisModel) {
                throw new Error(axisType + ' "' + retrieve(
                    seriesModel.get(axisType + 'Index'),
                    seriesModel.get(axisType + 'Id'),
                    0
                ) + '" not found');
            }
        }
        return axisModel;
    });
}

/**
 * @inner
 */
function isCartesian2D(seriesModel) {
    return seriesModel.get('coordinateSystem') === 'cartesian2d';
}

Grid.create = function (ecModel, api) {
    var grids = [];
    ecModel.eachComponent('grid', function (gridModel, idx) {
        var grid = new Grid(gridModel, ecModel, api);
        grid.name = 'grid_' + idx;
        // dataSampling requires axis extent, so resize
        // should be performed in create stage.
        grid.resize(gridModel, api, true);

        gridModel.coordinateSystem = grid;

        grids.push(grid);
    });

    // Inject the coordinateSystems into seriesModel
    ecModel.eachSeries(function (seriesModel) {
        if (!isCartesian2D(seriesModel)) {
            return;
        }

        var axesModels = findAxesModels(seriesModel, ecModel);
        var xAxisModel = axesModels[0];
        var yAxisModel = axesModels[1];

        var gridModel = xAxisModel.getCoordSysModel();

        if (__DEV__) {
            if (!gridModel) {
                throw new Error(
                    'Grid "' + retrieve(
                        xAxisModel.get('gridIndex'),
                        xAxisModel.get('gridId'),
                        0
                    ) + '" not found'
                );
            }
            if (xAxisModel.getCoordSysModel() !== yAxisModel.getCoordSysModel()) {
                throw new Error('xAxis and yAxis must use the same grid');
            }
        }

        var grid = gridModel.coordinateSystem;

        seriesModel.coordinateSystem = grid.getCartesian(
            xAxisModel.componentIndex, yAxisModel.componentIndex
        );
    });

    return grids;
};

// For deciding which dimensions to use when creating list data
Grid.dimensions = Grid.prototype.dimensions = Cartesian2D.prototype.dimensions;

CoordinateSystemManager.register('cartesian2d', Grid);

var PI$2 = Math.PI;

function makeAxisEventDataBase(axisModel) {
    var eventData = {
        componentType: axisModel.mainType
    };
    eventData[axisModel.mainType + 'Index'] = axisModel.componentIndex;
    return eventData;
}

/**
 * A final axis is translated and rotated from a "standard axis".
 * So opt.position and opt.rotation is required.
 *
 * A standard axis is and axis from [0, 0] to [0, axisExtent[1]],
 * for example: (0, 0) ------------> (0, 50)
 *
 * nameDirection or tickDirection or labelDirection is 1 means tick
 * or label is below the standard axis, whereas is -1 means above
 * the standard axis. labelOffset means offset between label and axis,
 * which is useful when 'onZero', where axisLabel is in the grid and
 * label in outside grid.
 *
 * Tips: like always,
 * positive rotation represents anticlockwise, and negative rotation
 * represents clockwise.
 * The direction of position coordinate is the same as the direction
 * of screen coordinate.
 *
 * Do not need to consider axis 'inverse', which is auto processed by
 * axis extent.
 *
 * @param {module:zrender/container/Group} group
 * @param {Object} axisModel
 * @param {Object} opt Standard axis parameters.
 * @param {Array.<number>} opt.position [x, y]
 * @param {number} opt.rotation by radian
 * @param {number} [opt.nameDirection=1] 1 or -1 Used when nameLocation is 'middle' or 'center'.
 * @param {number} [opt.tickDirection=1] 1 or -1
 * @param {number} [opt.labelDirection=1] 1 or -1
 * @param {number} [opt.labelOffset=0] Usefull when onZero.
 * @param {string} [opt.axisLabelShow] default get from axisModel.
 * @param {string} [opt.axisName] default get from axisModel.
 * @param {number} [opt.axisNameAvailableWidth]
 * @param {number} [opt.labelRotate] by degree, default get from axisModel.
 * @param {number} [opt.labelInterval] Default label interval when label
 *                                     interval from model is null or 'auto'.
 * @param {number} [opt.strokeContainThreshold] Default label interval when label
 * @param {number} [opt.nameTruncateMaxWidth]
 */
var AxisBuilder = function (axisModel, opt) {

    /**
     * @readOnly
     */
    this.opt = opt;

    /**
     * @readOnly
     */
    this.axisModel = axisModel;

    // Default value
    defaults(
        opt,
        {
            labelOffset: 0,
            nameDirection: 1,
            tickDirection: 1,
            labelDirection: 1,
            silent: true
        }
    );

    /**
     * @readOnly
     */
    this.group = new Group();

    // FIXME Not use a seperate text group?
    var dumbGroup = new Group({
        position: opt.position.slice(),
        rotation: opt.rotation
    });

    // this.group.add(dumbGroup);
    // this._dumbGroup = dumbGroup;

    dumbGroup.updateTransform();
    this._transform = dumbGroup.transform;

    this._dumbGroup = dumbGroup;
};

AxisBuilder.prototype = {

    constructor: AxisBuilder,

    hasBuilder: function (name) {
        return !!builders[name];
    },

    add: function (name) {
        builders[name].call(this);
    },

    getGroup: function () {
        return this.group;
    }

};

var builders = {

    /**
     * @private
     */
    axisLine: function () {
        var opt = this.opt;
        var axisModel = this.axisModel;

        if (!axisModel.get('axisLine.show')) {
            return;
        }

        var extent = this.axisModel.axis.getExtent();

        var matrix = this._transform;
        var pt1 = [extent[0], 0];
        var pt2 = [extent[1], 0];
        if (matrix) {
            applyTransform(pt1, pt1, matrix);
            applyTransform(pt2, pt2, matrix);
        }

        var lineStyle = extend(
            {
                lineCap: 'round'
            },
            axisModel.getModel('axisLine.lineStyle').getLineStyle()
        );

        this.group.add(new Line(subPixelOptimizeLine({
            // Id for animation
            anid: 'line',

            shape: {
                x1: pt1[0],
                y1: pt1[1],
                x2: pt2[0],
                y2: pt2[1]
            },
            style: lineStyle,
            strokeContainThreshold: opt.strokeContainThreshold || 5,
            silent: true,
            z2: 1
        })));

        var arrows = axisModel.get('axisLine.symbol');
        var arrowSize = axisModel.get('axisLine.symbolSize');

        var arrowOffset = axisModel.get('axisLine.symbolOffset') || 0;
        if (typeof arrowOffset === 'number') {
            arrowOffset = [arrowOffset, arrowOffset];
        }

        if (arrows != null) {
            if (typeof arrows === 'string') {
                // Use the same arrow for start and end point
                arrows = [arrows, arrows];
            }
            if (typeof arrowSize === 'string'
                || typeof arrowSize === 'number'
            ) {
                // Use the same size for width and height
                arrowSize = [arrowSize, arrowSize];
            }

            var symbolWidth = arrowSize[0];
            var symbolHeight = arrowSize[1];

            each$1([{
                rotate: opt.rotation + Math.PI / 2,
                offset: arrowOffset[0],
                r: 0
            }, {
                rotate: opt.rotation - Math.PI / 2,
                offset: arrowOffset[1],
                r: Math.sqrt((pt1[0] - pt2[0]) * (pt1[0] - pt2[0])
                    + (pt1[1] - pt2[1]) * (pt1[1] - pt2[1]))
            }], function (point, index) {
                if (arrows[index] !== 'none' && arrows[index] != null) {
                    var symbol = createSymbol(
                        arrows[index],
                        -symbolWidth / 2,
                        -symbolHeight / 2,
                        symbolWidth,
                        symbolHeight,
                        lineStyle.stroke,
                        true
                    );

                    // Calculate arrow position with offset
                    var r = point.r + point.offset;
                    var pos = [
                        pt1[0] + r * Math.cos(opt.rotation),
                        pt1[1] - r * Math.sin(opt.rotation)
                    ];

                    symbol.attr({
                        rotation: point.rotate,
                        position: pos,
                        silent: true
                    });
                    this.group.add(symbol);
                }
            }, this);
        }
    },

    /**
     * @private
     */
    axisTickLabel: function () {
        var axisModel = this.axisModel;
        var opt = this.opt;

        var tickEls = buildAxisTick(this, axisModel, opt);
        var labelEls = buildAxisLabel(this, axisModel, opt);

        fixMinMaxLabelShow(axisModel, labelEls, tickEls);
    },

    /**
     * @private
     */
    axisName: function () {
        var opt = this.opt;
        var axisModel = this.axisModel;
        var name = retrieve(opt.axisName, axisModel.get('name'));

        if (!name) {
            return;
        }

        var nameLocation = axisModel.get('nameLocation');
        var nameDirection = opt.nameDirection;
        var textStyleModel = axisModel.getModel('nameTextStyle');
        var gap = axisModel.get('nameGap') || 0;

        var extent = this.axisModel.axis.getExtent();
        var gapSignal = extent[0] > extent[1] ? -1 : 1;
        var pos = [
            nameLocation === 'start'
                ? extent[0] - gapSignal * gap
                : nameLocation === 'end'
                ? extent[1] + gapSignal * gap
                : (extent[0] + extent[1]) / 2, // 'middle'
            // Reuse labelOffset.
            isNameLocationCenter(nameLocation) ? opt.labelOffset + nameDirection * gap : 0
        ];

        var labelLayout;

        var nameRotation = axisModel.get('nameRotate');
        if (nameRotation != null) {
            nameRotation = nameRotation * PI$2 / 180; // To radian.
        }

        var axisNameAvailableWidth;

        if (isNameLocationCenter(nameLocation)) {
            labelLayout = innerTextLayout(
                opt.rotation,
                nameRotation != null ? nameRotation : opt.rotation, // Adapt to axis.
                nameDirection
            );
        }
        else {
            labelLayout = endTextLayout(
                opt, nameLocation, nameRotation || 0, extent
            );

            axisNameAvailableWidth = opt.axisNameAvailableWidth;
            if (axisNameAvailableWidth != null) {
                axisNameAvailableWidth = Math.abs(
                    axisNameAvailableWidth / Math.sin(labelLayout.rotation)
                );
                !isFinite(axisNameAvailableWidth) && (axisNameAvailableWidth = null);
            }
        }

        var textFont = textStyleModel.getFont();

        var truncateOpt = axisModel.get('nameTruncate', true) || {};
        var ellipsis = truncateOpt.ellipsis;
        var maxWidth = retrieve(
            opt.nameTruncateMaxWidth, truncateOpt.maxWidth, axisNameAvailableWidth
        );
        // FIXME
        // truncate rich text? (consider performance)
        var truncatedText = (ellipsis != null && maxWidth != null)
            ? truncateText$1(
                name, maxWidth, textFont, ellipsis,
                {minChar: 2, placeholder: truncateOpt.placeholder}
            )
            : name;

        var tooltipOpt = axisModel.get('tooltip', true);

        var mainType = axisModel.mainType;
        var formatterParams = {
            componentType: mainType,
            name: name,
            $vars: ['name']
        };
        formatterParams[mainType + 'Index'] = axisModel.componentIndex;

        var textEl = new Text({
            // Id for animation
            anid: 'name',

            __fullText: name,
            __truncatedText: truncatedText,

            position: pos,
            rotation: labelLayout.rotation,
            silent: isSilent(axisModel),
            z2: 1,
            tooltip: (tooltipOpt && tooltipOpt.show)
                ? extend({
                    content: name,
                    formatter: function () {
                        return name;
                    },
                    formatterParams: formatterParams
                }, tooltipOpt)
                : null
        });

        setTextStyle(textEl.style, textStyleModel, {
            text: truncatedText,
            textFont: textFont,
            textFill: textStyleModel.getTextColor()
                || axisModel.get('axisLine.lineStyle.color'),
            textAlign: labelLayout.textAlign,
            textVerticalAlign: labelLayout.textVerticalAlign
        });

        if (axisModel.get('triggerEvent')) {
            textEl.eventData = makeAxisEventDataBase(axisModel);
            textEl.eventData.targetType = 'axisName';
            textEl.eventData.name = name;
        }

        // FIXME
        this._dumbGroup.add(textEl);
        textEl.updateTransform();

        this.group.add(textEl);

        textEl.decomposeTransform();
    }

};

/**
 * @public
 * @static
 * @param {Object} opt
 * @param {number} axisRotation in radian
 * @param {number} textRotation in radian
 * @param {number} direction
 * @return {Object} {
 *  rotation, // according to axis
 *  textAlign,
 *  textVerticalAlign
 * }
 */
var innerTextLayout = AxisBuilder.innerTextLayout = function (axisRotation, textRotation, direction) {
    var rotationDiff = remRadian(textRotation - axisRotation);
    var textAlign;
    var textVerticalAlign;

    if (isRadianAroundZero(rotationDiff)) { // Label is parallel with axis line.
        textVerticalAlign = direction > 0 ? 'top' : 'bottom';
        textAlign = 'center';
    }
    else if (isRadianAroundZero(rotationDiff - PI$2)) { // Label is inverse parallel with axis line.
        textVerticalAlign = direction > 0 ? 'bottom' : 'top';
        textAlign = 'center';
    }
    else {
        textVerticalAlign = 'middle';

        if (rotationDiff > 0 && rotationDiff < PI$2) {
            textAlign = direction > 0 ? 'right' : 'left';
        }
        else {
            textAlign = direction > 0 ? 'left' : 'right';
        }
    }

    return {
        rotation: rotationDiff,
        textAlign: textAlign,
        textVerticalAlign: textVerticalAlign
    };
};

function endTextLayout(opt, textPosition, textRotate, extent) {
    var rotationDiff = remRadian(textRotate - opt.rotation);
    var textAlign;
    var textVerticalAlign;
    var inverse = extent[0] > extent[1];
    var onLeft = (textPosition === 'start' && !inverse)
        || (textPosition !== 'start' && inverse);

    if (isRadianAroundZero(rotationDiff - PI$2 / 2)) {
        textVerticalAlign = onLeft ? 'bottom' : 'top';
        textAlign = 'center';
    }
    else if (isRadianAroundZero(rotationDiff - PI$2 * 1.5)) {
        textVerticalAlign = onLeft ? 'top' : 'bottom';
        textAlign = 'center';
    }
    else {
        textVerticalAlign = 'middle';
        if (rotationDiff < PI$2 * 1.5 && rotationDiff > PI$2 / 2) {
            textAlign = onLeft ? 'left' : 'right';
        }
        else {
            textAlign = onLeft ? 'right' : 'left';
        }
    }

    return {
        rotation: rotationDiff,
        textAlign: textAlign,
        textVerticalAlign: textVerticalAlign
    };
}

function isSilent(axisModel) {
    var tooltipOpt = axisModel.get('tooltip');
    return axisModel.get('silent')
        // Consider mouse cursor, add these restrictions.
        || !(
            axisModel.get('triggerEvent') || (tooltipOpt && tooltipOpt.show)
        );
}

function fixMinMaxLabelShow(axisModel, labelEls, tickEls) {
    // If min or max are user set, we need to check
    // If the tick on min(max) are overlap on their neighbour tick
    // If they are overlapped, we need to hide the min(max) tick label
    var showMinLabel = axisModel.get('axisLabel.showMinLabel');
    var showMaxLabel = axisModel.get('axisLabel.showMaxLabel');

    // FIXME
    // Have not consider onBand yet, where tick els is more than label els.

    labelEls = labelEls || [];
    tickEls = tickEls || [];

    var firstLabel = labelEls[0];
    var nextLabel = labelEls[1];
    var lastLabel = labelEls[labelEls.length - 1];
    var prevLabel = labelEls[labelEls.length - 2];

    var firstTick = tickEls[0];
    var nextTick = tickEls[1];
    var lastTick = tickEls[tickEls.length - 1];
    var prevTick = tickEls[tickEls.length - 2];

    if (showMinLabel === false) {
        ignoreEl(firstLabel);
        ignoreEl(firstTick);
    }
    else if (isTwoLabelOverlapped(firstLabel, nextLabel)) {
        if (showMinLabel) {
            ignoreEl(nextLabel);
            ignoreEl(nextTick);
        }
        else {
            ignoreEl(firstLabel);
            ignoreEl(firstTick);
        }
    }

    if (showMaxLabel === false) {
        ignoreEl(lastLabel);
        ignoreEl(lastTick);
    }
    else if (isTwoLabelOverlapped(prevLabel, lastLabel)) {
        if (showMaxLabel) {
            ignoreEl(prevLabel);
            ignoreEl(prevTick);
        }
        else {
            ignoreEl(lastLabel);
            ignoreEl(lastTick);
        }
    }
}

function ignoreEl(el) {
    el && (el.ignore = true);
}

function isTwoLabelOverlapped(current, next, labelLayout) {
    // current and next has the same rotation.
    var firstRect = current && current.getBoundingRect().clone();
    var nextRect = next && next.getBoundingRect().clone();

    if (!firstRect || !nextRect) {
        return;
    }

    // When checking intersect of two rotated labels, we use mRotationBack
    // to avoid that boundingRect is enlarge when using `boundingRect.applyTransform`.
    var mRotationBack = identity([]);
    rotate(mRotationBack, mRotationBack, -current.rotation);

    firstRect.applyTransform(mul$1([], mRotationBack, current.getLocalTransform()));
    nextRect.applyTransform(mul$1([], mRotationBack, next.getLocalTransform()));

    return firstRect.intersect(nextRect);
}

function isNameLocationCenter(nameLocation) {
    return nameLocation === 'middle' || nameLocation === 'center';
}

/**
 * @static
 */
var ifIgnoreOnTick$1 = AxisBuilder.ifIgnoreOnTick = function (
    axis,
    i,
    interval,
    ticksCnt,
    showMinLabel,
    showMaxLabel
) {
    if (i === 0 && showMinLabel || i === ticksCnt - 1 && showMaxLabel) {
        return false;
    }

    // FIXME
    // Have not consider label overlap (if label is too long) yet.

    var rawTick;
    var scale$$1 = axis.scale;
    return scale$$1.type === 'ordinal'
        && (
            typeof interval === 'function'
                ? (
                    rawTick = scale$$1.getTicks()[i],
                    !interval(rawTick, scale$$1.getLabel(rawTick))
                )
                : i % (interval + 1)
        );
};

/**
 * @static
 */
var getInterval$1 = AxisBuilder.getInterval = function (model, labelInterval) {
    var interval = model.get('interval');
    if (interval == null || interval == 'auto') {
        interval = labelInterval;
    }
    return interval;
};

function buildAxisTick(axisBuilder, axisModel, opt) {
    var axis = axisModel.axis;

    if (!axisModel.get('axisTick.show') || axis.scale.isBlank()) {
        return;
    }

    var tickModel = axisModel.getModel('axisTick');

    var lineStyleModel = tickModel.getModel('lineStyle');
    var tickLen = tickModel.get('length');

    var tickInterval = getInterval$1(tickModel, opt.labelInterval);
    var ticksCoords = axis.getTicksCoords(tickModel.get('alignWithLabel'));
    // FIXME
    // Corresponds to ticksCoords ?
    var ticks = axis.scale.getTicks();

    var showMinLabel = axisModel.get('axisLabel.showMinLabel');
    var showMaxLabel = axisModel.get('axisLabel.showMaxLabel');

    var pt1 = [];
    var pt2 = [];
    var matrix = axisBuilder._transform;

    var tickEls = [];

    var ticksCnt = ticksCoords.length;
    for (var i = 0; i < ticksCnt; i++) {
        // Only ordinal scale support tick interval
        if (ifIgnoreOnTick$1(
            axis, i, tickInterval, ticksCnt,
            showMinLabel, showMaxLabel
        )) {
            continue;
        }

        var tickCoord = ticksCoords[i];

        pt1[0] = tickCoord;
        pt1[1] = 0;
        pt2[0] = tickCoord;
        pt2[1] = opt.tickDirection * tickLen;

        if (matrix) {
            applyTransform(pt1, pt1, matrix);
            applyTransform(pt2, pt2, matrix);
        }
        // Tick line, Not use group transform to have better line draw
        var tickEl = new Line(subPixelOptimizeLine({
            // Id for animation
            anid: 'tick_' + ticks[i],

            shape: {
                x1: pt1[0],
                y1: pt1[1],
                x2: pt2[0],
                y2: pt2[1]
            },
            style: defaults(
                lineStyleModel.getLineStyle(),
                {
                    stroke: axisModel.get('axisLine.lineStyle.color')
                }
            ),
            z2: 2,
            silent: true
        }));
        axisBuilder.group.add(tickEl);
        tickEls.push(tickEl);
    }

    return tickEls;
}

function buildAxisLabel(axisBuilder, axisModel, opt) {
    var axis = axisModel.axis;
    var show = retrieve(opt.axisLabelShow, axisModel.get('axisLabel.show'));

    if (!show || axis.scale.isBlank()) {
        return;
    }

    var labelModel = axisModel.getModel('axisLabel');
    var labelMargin = labelModel.get('margin');
    var ticks = axis.scale.getTicks();
    var labels = axisModel.getFormattedLabels();

    // Special label rotate.
    var labelRotation = (
        retrieve(opt.labelRotate, labelModel.get('rotate')) || 0
    ) * PI$2 / 180;

    var labelLayout = innerTextLayout(opt.rotation, labelRotation, opt.labelDirection);
    var categoryData = axisModel.getCategories();

    var labelEls = [];
    var silent = isSilent(axisModel);
    var triggerEvent = axisModel.get('triggerEvent');

    var showMinLabel = axisModel.get('axisLabel.showMinLabel');
    var showMaxLabel = axisModel.get('axisLabel.showMaxLabel');

    each$1(ticks, function (tickVal, index) {
        if (ifIgnoreOnTick$1(
            axis, index, opt.labelInterval, ticks.length,
            showMinLabel, showMaxLabel
        )) {
                return;
        }

        var itemLabelModel = labelModel;
        if (categoryData && categoryData[tickVal] && categoryData[tickVal].textStyle) {
            itemLabelModel = new Model(
                categoryData[tickVal].textStyle, labelModel, axisModel.ecModel
            );
        }

        var textColor = itemLabelModel.getTextColor()
            || axisModel.get('axisLine.lineStyle.color');

        var tickCoord = axis.dataToCoord(tickVal);
        var pos = [
            tickCoord,
            opt.labelOffset + opt.labelDirection * labelMargin
        ];
        var labelStr = axis.scale.getLabel(tickVal);

        var textEl = new Text({
            // Id for animation
            anid: 'label_' + tickVal,
            position: pos,
            rotation: labelLayout.rotation,
            silent: silent,
            z2: 10
        });

        setTextStyle(textEl.style, itemLabelModel, {
            text: labels[index],
            textAlign: itemLabelModel.getShallow('align', true)
                || labelLayout.textAlign,
            textVerticalAlign: itemLabelModel.getShallow('verticalAlign', true)
                || itemLabelModel.getShallow('baseline', true)
                || labelLayout.textVerticalAlign,
            textFill: typeof textColor === 'function'
                ? textColor(
                    // (1) In category axis with data zoom, tick is not the original
                    // index of axis.data. So tick should not be exposed to user
                    // in category axis.
                    // (2) Compatible with previous version, which always returns labelStr.
                    // But in interval scale labelStr is like '223,445', which maked
                    // user repalce ','. So we modify it to return original val but remain
                    // it as 'string' to avoid error in replacing.
                    axis.type === 'category' ? labelStr : axis.type === 'value' ? tickVal + '' : tickVal,
                    index
                )
                : textColor
        });

        // Pack data for mouse event
        if (triggerEvent) {
            textEl.eventData = makeAxisEventDataBase(axisModel);
            textEl.eventData.targetType = 'axisLabel';
            textEl.eventData.value = labelStr;
        }

        // FIXME
        axisBuilder._dumbGroup.add(textEl);
        textEl.updateTransform();

        labelEls.push(textEl);
        axisBuilder.group.add(textEl);

        textEl.decomposeTransform();

    });

    return labelEls;
}

// Build axisPointerModel, mergin tooltip.axisPointer model for each axis.
// allAxesInfo should be updated when setOption performed.


function fixValue(axisModel) {
    var axisInfo = getAxisInfo(axisModel);
    if (!axisInfo) {
        return;
    }

    var axisPointerModel = axisInfo.axisPointerModel;
    var scale = axisInfo.axis.scale;
    var option = axisPointerModel.option;
    var status = axisPointerModel.get('status');
    var value = axisPointerModel.get('value');

    // Parse init value for category and time axis.
    if (value != null) {
        value = scale.parse(value);
    }

    var useHandle = isHandleTrigger(axisPointerModel);
    // If `handle` used, `axisPointer` will always be displayed, so value
    // and status should be initialized.
    if (status == null) {
        option.status = useHandle ? 'show' : 'hide';
    }

    var extent = scale.getExtent().slice();
    extent[0] > extent[1] && extent.reverse();

    if (// Pick a value on axis when initializing.
        value == null
        // If both `handle` and `dataZoom` are used, value may be out of axis extent,
        // where we should re-pick a value to keep `handle` displaying normally.
        || value > extent[1]
    ) {
        // Make handle displayed on the end of the axis when init, which looks better.
        value = extent[1];
    }
    if (value < extent[0]) {
        value = extent[0];
    }

    option.value = value;

    if (useHandle) {
        option.status = axisInfo.axis.scale.isBlank() ? 'hide' : 'show';
    }
}

function getAxisInfo(axisModel) {
    var coordSysAxesInfo = (axisModel.ecModel.getComponent('axisPointer') || {}).coordSysAxesInfo;
    return coordSysAxesInfo && coordSysAxesInfo.axesInfo[makeKey(axisModel)];
}

function getAxisPointerModel(axisModel) {
    var axisInfo = getAxisInfo(axisModel);
    return axisInfo && axisInfo.axisPointerModel;
}

function isHandleTrigger(axisPointerModel) {
    return !!axisPointerModel.get('handle.show');
}

/**
 * @param {module:echarts/model/Model} model
 * @return {string} unique key
 */
function makeKey(model) {
    return model.type + '||' + model.id;
}

/**
 * Base class of AxisView.
 */
var AxisView = extendComponentView({

    type: 'axis',

    /**
     * @private
     */
    _axisPointer: null,

    /**
     * @protected
     * @type {string}
     */
    axisPointerClass: null,

    /**
     * @override
     */
    render: function (axisModel, ecModel, api, payload) {
        // FIXME
        // This process should proformed after coordinate systems updated
        // (axis scale updated), and should be performed each time update.
        // So put it here temporarily, although it is not appropriate to
        // put a model-writing procedure in `view`.
        this.axisPointerClass && fixValue(axisModel);

        AxisView.superApply(this, 'render', arguments);

        updateAxisPointer(this, axisModel, ecModel, api, payload, true);
    },

    /**
     * Action handler.
     * @public
     * @param {module:echarts/coord/cartesian/AxisModel} axisModel
     * @param {module:echarts/model/Global} ecModel
     * @param {module:echarts/ExtensionAPI} api
     * @param {Object} payload
     */
    updateAxisPointer: function (axisModel, ecModel, api, payload, force) {
        updateAxisPointer(this, axisModel, ecModel, api, payload, false);
    },

    /**
     * @override
     */
    remove: function (ecModel, api) {
        var axisPointer = this._axisPointer;
        axisPointer && axisPointer.remove(api);
        AxisView.superApply(this, 'remove', arguments);
    },

    /**
     * @override
     */
    dispose: function (ecModel, api) {
        disposeAxisPointer(this, api);
        AxisView.superApply(this, 'dispose', arguments);
    }

});

function updateAxisPointer(axisView, axisModel, ecModel, api, payload, forceRender) {
    var Clazz = AxisView.getAxisPointerClass(axisView.axisPointerClass);
    if (!Clazz) {
        return;
    }
    var axisPointerModel = getAxisPointerModel(axisModel);
    axisPointerModel
        ? (axisView._axisPointer || (axisView._axisPointer = new Clazz()))
            .render(axisModel, axisPointerModel, api, forceRender)
        : disposeAxisPointer(axisView, api);
}

function disposeAxisPointer(axisView, ecModel, api) {
    var axisPointer = axisView._axisPointer;
    axisPointer && axisPointer.dispose(ecModel, api);
    axisView._axisPointer = null;
}

var axisPointerClazz = [];

AxisView.registerAxisPointerClass = function (type, clazz) {
    if (__DEV__) {
        if (axisPointerClazz[type]) {
            throw new Error('axisPointer ' + type + ' exists');
        }
    }
    axisPointerClazz[type] = clazz;
};

AxisView.getAxisPointerClass = function (type) {
    return type && axisPointerClazz[type];
};

/**
 * @param {Object} opt {labelInside}
 * @return {Object} {
 *  position, rotation, labelDirection, labelOffset,
 *  tickDirection, labelRotate, labelInterval, z2
 * }
 */
function layout$1(gridModel, axisModel, opt) {
    opt = opt || {};
    var grid = gridModel.coordinateSystem;
    var axis = axisModel.axis;
    var layout = {};

    var rawAxisPosition = axis.position;
    var axisPosition = axis.onZero ? 'onZero' : rawAxisPosition;
    var axisDim = axis.dim;

    var rect = grid.getRect();
    var rectBound = [rect.x, rect.x + rect.width, rect.y, rect.y + rect.height];
    var idx = {left: 0, right: 1, top: 0, bottom: 1, onZero: 2};
    var axisOffset = axisModel.get('offset') || 0;

    var posBound = axisDim === 'x'
        ? [rectBound[2] - axisOffset, rectBound[3] + axisOffset]
        : [rectBound[0] - axisOffset, rectBound[1] + axisOffset];

    if (axis.onZero) {
        var otherAxis = grid.getAxis(axisDim === 'x' ? 'y' : 'x', axis.onZeroAxisIndex);
        var onZeroCoord = otherAxis.toGlobalCoord(otherAxis.dataToCoord(0));
        posBound[idx['onZero']] = Math.max(Math.min(onZeroCoord, posBound[1]), posBound[0]);
    }

    // Axis position
    layout.position = [
        axisDim === 'y' ? posBound[idx[axisPosition]] : rectBound[0],
        axisDim === 'x' ? posBound[idx[axisPosition]] : rectBound[3]
    ];

    // Axis rotation
    layout.rotation = Math.PI / 2 * (axisDim === 'x' ? 0 : 1);

    // Tick and label direction, x y is axisDim
    var dirMap = {top: -1, bottom: 1, left: -1, right: 1};

    layout.labelDirection = layout.tickDirection = layout.nameDirection = dirMap[rawAxisPosition];
    layout.labelOffset = axis.onZero ? posBound[idx[rawAxisPosition]] - posBound[idx['onZero']] : 0;

    if (axisModel.get('axisTick.inside')) {
        layout.tickDirection = -layout.tickDirection;
    }
    if (retrieve(opt.labelInside, axisModel.get('axisLabel.inside'))) {
        layout.labelDirection = -layout.labelDirection;
    }

    // Special label rotation
    var labelRotate = axisModel.get('axisLabel.rotate');
    layout.labelRotate = axisPosition === 'top' ? -labelRotate : labelRotate;

    // label interval when auto mode.
    layout.labelInterval = axis.getLabelInterval();

    // Over splitLine and splitArea
    layout.z2 = 1;

    return layout;
}

var ifIgnoreOnTick = AxisBuilder.ifIgnoreOnTick;
var getInterval = AxisBuilder.getInterval;

var axisBuilderAttrs = [
    'axisLine', 'axisTickLabel', 'axisName'
];
var selfBuilderAttrs = [
    'splitArea', 'splitLine'
];

// function getAlignWithLabel(model, axisModel) {
//     var alignWithLabel = model.get('alignWithLabel');
//     if (alignWithLabel === 'auto') {
//         alignWithLabel = axisModel.get('axisTick.alignWithLabel');
//     }
//     return alignWithLabel;
// }

var CartesianAxisView = AxisView.extend({

    type: 'cartesianAxis',

    axisPointerClass: 'CartesianAxisPointer',

    /**
     * @override
     */
    render: function (axisModel, ecModel, api, payload) {

        this.group.removeAll();

        var oldAxisGroup = this._axisGroup;
        this._axisGroup = new Group();

        this.group.add(this._axisGroup);

        if (!axisModel.get('show')) {
            return;
        }

        var gridModel = axisModel.getCoordSysModel();

        var layout = layout$1(gridModel, axisModel);

        var axisBuilder = new AxisBuilder(axisModel, layout);

        each$1(axisBuilderAttrs, axisBuilder.add, axisBuilder);

        this._axisGroup.add(axisBuilder.getGroup());

        each$1(selfBuilderAttrs, function (name) {
            if (axisModel.get(name + '.show')) {
                this['_' + name](axisModel, gridModel, layout.labelInterval);
            }
        }, this);

        groupTransition(oldAxisGroup, this._axisGroup, axisModel);

        CartesianAxisView.superCall(this, 'render', axisModel, ecModel, api, payload);
    },

    /**
     * @param {module:echarts/coord/cartesian/AxisModel} axisModel
     * @param {module:echarts/coord/cartesian/GridModel} gridModel
     * @param {number|Function} labelInterval
     * @private
     */
    _splitLine: function (axisModel, gridModel, labelInterval) {
        var axis = axisModel.axis;

        if (axis.scale.isBlank()) {
            return;
        }

        var splitLineModel = axisModel.getModel('splitLine');
        var lineStyleModel = splitLineModel.getModel('lineStyle');
        var lineColors = lineStyleModel.get('color');

        var lineInterval = getInterval(splitLineModel, labelInterval);

        lineColors = isArray(lineColors) ? lineColors : [lineColors];

        var gridRect = gridModel.coordinateSystem.getRect();
        var isHorizontal = axis.isHorizontal();

        var lineCount = 0;

        var ticksCoords = axis.getTicksCoords(
            // splitLineModel.get('alignWithLabel')
        );
        var ticks = axis.scale.getTicks();

        var showMinLabel = axisModel.get('axisLabel.showMinLabel');
        var showMaxLabel = axisModel.get('axisLabel.showMaxLabel');

        var p1 = [];
        var p2 = [];
        // Simple optimization
        // Batching the lines if color are the same
        var lineStyle = lineStyleModel.getLineStyle();
        for (var i = 0; i < ticksCoords.length; i++) {
            if (ifIgnoreOnTick(
                axis, i, lineInterval, ticksCoords.length,
                showMinLabel, showMaxLabel
            )) {
                continue;
            }

            var tickCoord = axis.toGlobalCoord(ticksCoords[i]);

            if (isHorizontal) {
                p1[0] = tickCoord;
                p1[1] = gridRect.y;
                p2[0] = tickCoord;
                p2[1] = gridRect.y + gridRect.height;
            }
            else {
                p1[0] = gridRect.x;
                p1[1] = tickCoord;
                p2[0] = gridRect.x + gridRect.width;
                p2[1] = tickCoord;
            }

            var colorIndex = (lineCount++) % lineColors.length;
            this._axisGroup.add(new Line(subPixelOptimizeLine({
                anid: 'line_' + ticks[i],

                shape: {
                    x1: p1[0],
                    y1: p1[1],
                    x2: p2[0],
                    y2: p2[1]
                },
                style: defaults({
                    stroke: lineColors[colorIndex]
                }, lineStyle),
                silent: true
            })));
        }
    },

    /**
     * @param {module:echarts/coord/cartesian/AxisModel} axisModel
     * @param {module:echarts/coord/cartesian/GridModel} gridModel
     * @param {number|Function} labelInterval
     * @private
     */
    _splitArea: function (axisModel, gridModel, labelInterval) {
        var axis = axisModel.axis;

        if (axis.scale.isBlank()) {
            return;
        }

        var splitAreaModel = axisModel.getModel('splitArea');
        var areaStyleModel = splitAreaModel.getModel('areaStyle');
        var areaColors = areaStyleModel.get('color');

        var gridRect = gridModel.coordinateSystem.getRect();

        var ticksCoords = axis.getTicksCoords(
            // splitAreaModel.get('alignWithLabel')
        );
        var ticks = axis.scale.getTicks();

        var prevX = axis.toGlobalCoord(ticksCoords[0]);
        var prevY = axis.toGlobalCoord(ticksCoords[0]);

        var count = 0;

        var areaInterval = getInterval(splitAreaModel, labelInterval);

        var areaStyle = areaStyleModel.getAreaStyle();
        areaColors = isArray(areaColors) ? areaColors : [areaColors];

        var showMinLabel = axisModel.get('axisLabel.showMinLabel');
        var showMaxLabel = axisModel.get('axisLabel.showMaxLabel');

        for (var i = 1; i < ticksCoords.length; i++) {
            if (ifIgnoreOnTick(
                axis, i, areaInterval, ticksCoords.length,
                showMinLabel, showMaxLabel
            ) && (i < ticksCoords.length - 1)) {
                continue;
            }

            var tickCoord = axis.toGlobalCoord(ticksCoords[i]);

            var x;
            var y;
            var width;
            var height;
            if (axis.isHorizontal()) {
                x = prevX;
                y = gridRect.y;
                width = tickCoord - x;
                height = gridRect.height;
            }
            else {
                x = gridRect.x;
                y = prevY;
                width = gridRect.width;
                height = tickCoord - y;
            }

            var colorIndex = (count++) % areaColors.length;
            this._axisGroup.add(new Rect({
                anid: 'area_' + ticks[i],

                shape: {
                    x: x,
                    y: y,
                    width: width,
                    height: height
                },
                style: defaults({
                    fill: areaColors[colorIndex]
                }, areaStyle),
                silent: true
            }));

            prevX = x + width;
            prevY = y + height;
        }
    }
});

CartesianAxisView.extend({
    type: 'xAxis'
});
CartesianAxisView.extend({
    type: 'yAxis'
});

// Grid view
extendComponentView({

    type: 'grid',

    render: function (gridModel, ecModel) {
        this.group.removeAll();
        if (gridModel.get('show')) {
            this.group.add(new Rect({
                shape: gridModel.coordinateSystem.getRect(),
                style: defaults({
                    fill: gridModel.get('backgroundColor')
                }, gridModel.getItemStyle()),
                silent: true,
                z2: -1
            }));
        }
    }

});

registerPreprocessor(function (option) {
    // Only create grid when need
    if (option.xAxis && option.yAxis && !option.grid) {
        option.grid = {};
    }
});

// In case developer forget to include grid component
registerVisual(visualSymbol('line', 'circle', 'line'));
registerLayout(layoutPoints('line'));

// Down sample after filter
registerProcessor(
    PRIORITY.PROCESSOR.STATISTIC,
    dataSample('line')
);

var BaseBarSeries = SeriesModel.extend({

    type: 'series.__base_bar__',

    getInitialData: function (option, ecModel) {
        return createListFromArray(this.getSource(), this);
    },

    getMarkerPosition: function (value) {
        var coordSys = this.coordinateSystem;
        if (coordSys) {
            // PENDING if clamp ?
            var pt = coordSys.dataToPoint(coordSys.clampData(value));
            var data = this.getData();
            var offset = data.getLayout('offset');
            var size = data.getLayout('size');
            var offsetIndex = coordSys.getBaseAxis().isHorizontal() ? 0 : 1;
            pt[offsetIndex] += offset + size / 2;
            return pt;
        }
        return [NaN, NaN];
    },

    defaultOption: {
        zlevel: 0,                  // 一级层叠
        z: 2,                       // 二级层叠
        coordinateSystem: 'cartesian2d',
        legendHoverLink: true,
        // stack: null

        // Cartesian coordinate system
        // xAxisIndex: 0,
        // yAxisIndex: 0,

        // 最小高度改为0
        barMinHeight: 0,
        // 最小角度为0，仅对极坐标系下的柱状图有效
        barMinAngle: 0,
        // cursor: null,

        // barMaxWidth: null,
        // 默认自适应
        // barWidth: null,
        // 柱间距离，默认为柱形宽度的30%，可设固定值
        // barGap: '30%',
        // 类目间柱形距离，默认为类目间距的20%，可设固定值
        // barCategoryGap: '20%',
        // label: {
        //      show: false
        // },
        itemStyle: {},
        emphasis: {}
    }
});

BaseBarSeries.extend({

    type: 'series.bar',

    dependencies: ['grid', 'polar'],

    brushSelector: 'rect'
});

function setLabel(
    normalStyle, hoverStyle, itemModel, color, seriesModel, dataIndex, labelPositionOutside
) {
    var labelModel = itemModel.getModel('label');
    var hoverLabelModel = itemModel.getModel('emphasis.label');

    setLabelStyle(
        normalStyle, hoverStyle, labelModel, hoverLabelModel,
        {
            labelFetcher: seriesModel,
            labelDataIndex: dataIndex,
            defaultText: getDefaultLabel(seriesModel.getData(), dataIndex),
            isRectText: true,
            autoColor: color
        }
    );

    fixPosition(normalStyle);
    fixPosition(hoverStyle);
}

function fixPosition(style, labelPositionOutside) {
    if (style.textPosition === 'outside') {
        style.textPosition = labelPositionOutside;
    }
}

var getBarItemStyle = makeStyleMapper(
    [
        ['fill', 'color'],
        ['stroke', 'borderColor'],
        ['lineWidth', 'borderWidth'],
        // Compatitable with 2
        ['stroke', 'barBorderColor'],
        ['lineWidth', 'barBorderWidth'],
        ['opacity'],
        ['shadowBlur'],
        ['shadowOffsetX'],
        ['shadowOffsetY'],
        ['shadowColor']
    ]
);

var barItemStyle = {
    getBarItemStyle: function (excludes) {
        var style = getBarItemStyle(this, excludes);
        if (this.getBorderLineDash) {
            var lineDash = this.getBorderLineDash();
            lineDash && (style.lineDash = lineDash);
        }
        return style;
    }
};

var BAR_BORDER_WIDTH_QUERY = ['itemStyle', 'barBorderWidth'];

// FIXME
// Just for compatible with ec2.
extend(Model.prototype, barItemStyle);

extendChartView({

    type: 'bar',

    render: function (seriesModel, ecModel, api) {
        var coordinateSystemType = seriesModel.get('coordinateSystem');

        if (coordinateSystemType === 'cartesian2d'
            || coordinateSystemType === 'polar'
        ) {
            this._render(seriesModel, ecModel, api);
        }
        else if (__DEV__) {
            console.warn('Only cartesian2d and polar supported for bar.');
        }

        return this.group;
    },

    dispose: noop,

    _render: function (seriesModel, ecModel, api) {
        var group = this.group;
        var data = seriesModel.getData();
        var oldData = this._data;

        var coord = seriesModel.coordinateSystem;
        var baseAxis = coord.getBaseAxis();
        var isHorizontalOrRadial;

        if (coord.type === 'cartesian2d') {
            isHorizontalOrRadial = baseAxis.isHorizontal();
        }
        else if (coord.type === 'polar') {
            isHorizontalOrRadial = baseAxis.dim === 'angle';
        }

        var animationModel = seriesModel.isAnimationEnabled() ? seriesModel : null;

        data.diff(oldData)
            .add(function (dataIndex) {
                if (!data.hasValue(dataIndex)) {
                    return;
                }

                var itemModel = data.getItemModel(dataIndex);
                var layout = getLayout[coord.type](data, dataIndex, itemModel);
                var el = elementCreator[coord.type](
                    data, dataIndex, itemModel, layout, isHorizontalOrRadial, animationModel
                );
                data.setItemGraphicEl(dataIndex, el);
                group.add(el);

                updateStyle(
                    el, data, dataIndex, itemModel, layout,
                    seriesModel, isHorizontalOrRadial, coord.type === 'polar'
                );
            })
            .update(function (newIndex, oldIndex) {
                var el = oldData.getItemGraphicEl(oldIndex);

                if (!data.hasValue(newIndex)) {
                    group.remove(el);
                    return;
                }

                var itemModel = data.getItemModel(newIndex);
                var layout = getLayout[coord.type](data, newIndex, itemModel);

                if (el) {
                    updateProps(el, {shape: layout}, animationModel, newIndex);
                }
                else {
                    el = elementCreator[coord.type](
                        data, newIndex, itemModel, layout, isHorizontalOrRadial, animationModel, true
                    );
                }

                data.setItemGraphicEl(newIndex, el);
                // Add back
                group.add(el);

                updateStyle(
                    el, data, newIndex, itemModel, layout,
                    seriesModel, isHorizontalOrRadial, coord.type === 'polar'
                );
            })
            .remove(function (dataIndex) {
                var el = oldData.getItemGraphicEl(dataIndex);
                if (coord.type === 'cartesian2d') {
                    el && removeRect(dataIndex, animationModel, el);
                }
                else {
                    el && removeSector(dataIndex, animationModel, el);
                }
            })
            .execute();

        this._data = data;
    },

    remove: function (ecModel, api) {
        var group = this.group;
        var data = this._data;
        if (ecModel.get('animation')) {
            if (data) {
                data.eachItemGraphicEl(function (el) {
                    if (el.type === 'sector') {
                        removeSector(el.dataIndex, ecModel, el);
                    }
                    else {
                        removeRect(el.dataIndex, ecModel, el);
                    }
                });
            }
        }
        else {
            group.removeAll();
        }
    }
});

var elementCreator = {

    cartesian2d: function (
        data, dataIndex, itemModel, layout, isHorizontal,
        animationModel, isUpdate
    ) {
        var rect = new Rect({shape: extend({}, layout)});

        // Animation
        if (animationModel) {
            var rectShape = rect.shape;
            var animateProperty = isHorizontal ? 'height' : 'width';
            var animateTarget = {};
            rectShape[animateProperty] = 0;
            animateTarget[animateProperty] = layout[animateProperty];
            graphic[isUpdate ? 'updateProps' : 'initProps'](rect, {
                shape: animateTarget
            }, animationModel, dataIndex);
        }

        return rect;
    },

    polar: function (
        data, dataIndex, itemModel, layout, isRadial,
        animationModel, isUpdate
    ) {
        // Keep the same logic with bar in catesion: use end value to control
        // direction. Notice that if clockwise is true (by default), the sector
        // will always draw clockwisely, no matter whether endAngle is greater
        // or less than startAngle.
        var clockwise = layout.startAngle < layout.endAngle;
        var sector = new Sector({
            shape: defaults({clockwise: clockwise}, layout)
        });

        // Animation
        if (animationModel) {
            var sectorShape = sector.shape;
            var animateProperty = isRadial ? 'r' : 'endAngle';
            var animateTarget = {};
            sectorShape[animateProperty] = isRadial ? 0 : layout.startAngle;
            animateTarget[animateProperty] = layout[animateProperty];
            graphic[isUpdate ? 'updateProps' : 'initProps'](sector, {
                shape: animateTarget
            }, animationModel, dataIndex);
        }

        return sector;
    }
};

function removeRect(dataIndex, animationModel, el) {
    // Not show text when animating
    el.style.text = null;
    updateProps(el, {
        shape: {
            width: 0
        }
    }, animationModel, dataIndex, function () {
        el.parent && el.parent.remove(el);
    });
}

function removeSector(dataIndex, animationModel, el) {
    // Not show text when animating
    el.style.text = null;
    updateProps(el, {
        shape: {
            r: el.shape.r0
        }
    }, animationModel, dataIndex, function () {
        el.parent && el.parent.remove(el);
    });
}

var getLayout = {
    cartesian2d: function (data, dataIndex, itemModel) {
        var layout = data.getItemLayout(dataIndex);
        var fixedLineWidth = getLineWidth(itemModel, layout);

        // fix layout with lineWidth
        var signX = layout.width > 0 ? 1 : -1;
        var signY = layout.height > 0 ? 1 : -1;
        return {
            x: layout.x + signX * fixedLineWidth / 2,
            y: layout.y + signY * fixedLineWidth / 2,
            width: layout.width - signX * fixedLineWidth,
            height: layout.height - signY * fixedLineWidth
        };
    },

    polar: function (data, dataIndex, itemModel) {
        var layout = data.getItemLayout(dataIndex);
        return {
            cx: layout.cx,
            cy: layout.cy,
            r0: layout.r0,
            r: layout.r,
            startAngle: layout.startAngle,
            endAngle: layout.endAngle
        };
    }
};

function updateStyle(
    el, data, dataIndex, itemModel, layout, seriesModel, isHorizontal, isPolar
) {
    var color = data.getItemVisual(dataIndex, 'color');
    var opacity = data.getItemVisual(dataIndex, 'opacity');
    var itemStyleModel = itemModel.getModel('itemStyle');
    var hoverStyle = itemModel.getModel('emphasis.itemStyle').getBarItemStyle();

    if (!isPolar) {
        el.setShape('r', itemStyleModel.get('barBorderRadius') || 0);
    }

    el.useStyle(defaults(
        {
            fill: color,
            opacity: opacity
        },
        itemStyleModel.getBarItemStyle()
    ));

    var cursorStyle = itemModel.getShallow('cursor');
    cursorStyle && el.attr('cursor', cursorStyle);

    var labelPositionOutside = isHorizontal
        ? (layout.height > 0 ? 'bottom' : 'top')
        : (layout.width > 0 ? 'left' : 'right');

    if (!isPolar) {
        setLabel(
            el.style, hoverStyle, itemModel, color,
            seriesModel, dataIndex, labelPositionOutside
        );
    }

    setHoverStyle(el, hoverStyle);
}

// In case width or height are too small.
function getLineWidth(itemModel, rawLayout) {
    var lineWidth = itemModel.get(BAR_BORDER_WIDTH_QUERY) || 0;
    return Math.min(lineWidth, Math.abs(rawLayout.width), Math.abs(rawLayout.height));
}

// In case developer forget to include grid component
registerLayout(curry(layout, 'bar'));

// Visual coding for legend
registerVisual(function (ecModel) {
    ecModel.eachSeriesByType('bar', function (seriesModel) {
        var data = seriesModel.getData();
        data.setVisual('legendSymbol', 'roundRect');
    });
});

/**
 * [Usage]:
 * (1)
 * createListSimply(seriesModel, ['value']);
 * (2)
 * createListSimply(seriesModel, {
 *     coordDimensions: ['value'],
 *     dimensionsCount: 5
 * });
 *
 * @param {module:echarts/model/Series} seriesModel
 * @param {Object|Array.<string|Object>} opt opt or coordDimensions
 *        The options in opt, see `echarts/data/helper/createDimensions`
 * @param {Array.<string>} [nameList]
 * @return {module:echarts/data/List}
 */
var createListSimply = function (seriesModel, opt, nameList) {
    opt = isArray(opt) && {coordDimensions: opt} || extend({}, opt);

    var source = seriesModel.getSource();

    var dimensionsInfo = createDimensions(source, opt);

    var list = new List(dimensionsInfo, seriesModel);
    list.initData(source, nameList);

    return list;
};

/**
 * Data selectable mixin for chart series.
 * To eanble data select, option of series must have `selectedMode`.
 * And each data item will use `selected` to toggle itself selected status
 */

var dataSelectableMixin = {

    /**
     * @param {Array.<Object>} targetList [{name, value, selected}, ...]
     *        If targetList is an array, it should like [{name: ..., value: ...}, ...].
     *        If targetList is a "List", it must have coordDim: 'value' dimension and name.
     */
    updateSelectedMap: function (targetList) {
        this._targetList = isArray(targetList) ? targetList.slice() : [];

        this._selectTargetMap = reduce(targetList || [], function (targetMap, target) {
            targetMap.set(target.name, target);
            return targetMap;
        }, createHashMap());
    },

    /**
     * Either name or id should be passed as input here.
     * If both of them are defined, id is used.
     *
     * @param {string|undefined} name name of data
     * @param {number|undefined} id dataIndex of data
     */
    // PENGING If selectedMode is null ?
    select: function (name, id) {
        var target = id != null
            ? this._targetList[id]
            : this._selectTargetMap.get(name);
        var selectedMode = this.get('selectedMode');
        if (selectedMode === 'single') {
            this._selectTargetMap.each(function (target) {
                target.selected = false;
            });
        }
        target && (target.selected = true);
    },

    /**
     * Either name or id should be passed as input here.
     * If both of them are defined, id is used.
     *
     * @param {string|undefined} name name of data
     * @param {number|undefined} id dataIndex of data
     */
    unSelect: function (name, id) {
        var target = id != null
            ? this._targetList[id]
            : this._selectTargetMap.get(name);
        // var selectedMode = this.get('selectedMode');
        // selectedMode !== 'single' && target && (target.selected = false);
        target && (target.selected = false);
    },

    /**
     * Either name or id should be passed as input here.
     * If both of them are defined, id is used.
     *
     * @param {string|undefined} name name of data
     * @param {number|undefined} id dataIndex of data
     */
    toggleSelected: function (name, id) {
        var target = id != null
            ? this._targetList[id]
            : this._selectTargetMap.get(name);
        if (target != null) {
            this[target.selected ? 'unSelect' : 'select'](name, id);
            return target.selected;
        }
    },

    /**
     * Either name or id should be passed as input here.
     * If both of them are defined, id is used.
     *
     * @param {string|undefined} name name of data
     * @param {number|undefined} id dataIndex of data
     */
    isSelected: function (name, id) {
        var target = id != null
            ? this._targetList[id]
            : this._selectTargetMap.get(name);
        return target && target.selected;
    }
};

var PieSeries = extendSeriesModel({

    type: 'series.pie',

    // Overwrite
    init: function (option) {
        PieSeries.superApply(this, 'init', arguments);

        // Enable legend selection for each data item
        // Use a function instead of direct access because data reference may changed
        this.legendDataProvider = function () {
            return this.getRawData();
        };

        this.updateSelectedMap(this._createSelectableList());

        this._defaultLabelLine(option);
    },

    // Overwrite
    mergeOption: function (newOption) {
        PieSeries.superCall(this, 'mergeOption', newOption);

        this.updateSelectedMap(this._createSelectableList());
    },

    getInitialData: function (option, ecModel) {
        return createListSimply(this, ['value']);
    },

    _createSelectableList: function () {
        var data = this.getRawData();
        var valueDim = data.mapDimension('value');
        var targetList = [];
        for (var i = 0, len = data.count(); i < len; i++) {
            targetList.push({
                name: data.getName(i),
                value: data.get(valueDim, i),
                selected: retrieveRawAttr(data, i, 'selected')
            });
        }
        return targetList;
    },

    // Overwrite
    getDataParams: function (dataIndex) {
        var data = this.getData();
        var params = PieSeries.superCall(this, 'getDataParams', dataIndex);
        // FIXME toFixed?

        var valueList = [];
        data.each(data.mapDimension('value'), function (value) {
            valueList.push(value);
        });

        params.percent = getPercentWithPrecision(
            valueList,
            dataIndex,
            data.hostModel.get('percentPrecision')
        );

        params.$vars.push('percent');
        return params;
    },

    _defaultLabelLine: function (option) {
        // Extend labelLine emphasis
        defaultEmphasis(option, 'labelLine', ['show']);

        var labelLineNormalOpt = option.labelLine;
        var labelLineEmphasisOpt = option.emphasis.labelLine;
        // Not show label line if `label.normal.show = false`
        labelLineNormalOpt.show = labelLineNormalOpt.show
            && option.label.show;
        labelLineEmphasisOpt.show = labelLineEmphasisOpt.show
            && option.emphasis.label.show;
    },

    defaultOption: {
        zlevel: 0,
        z: 2,
        legendHoverLink: true,

        hoverAnimation: true,
        // 默认全局居中
        center: ['50%', '50%'],
        radius: [0, '75%'],
        // 默认顺时针
        clockwise: true,
        startAngle: 90,
        // 最小角度改为0
        minAngle: 0,
        // 选中时扇区偏移量
        selectedOffset: 10,
        // 高亮扇区偏移量
        hoverOffset: 10,

        // If use strategy to avoid label overlapping
        avoidLabelOverlap: true,
        // 选择模式，默认关闭，可选single，multiple
        // selectedMode: false,
        // 南丁格尔玫瑰图模式，'radius'（半径） | 'area'（面积）
        // roseType: null,

        percentPrecision: 2,

        // If still show when all data zero.
        stillShowZeroSum: true,

        // cursor: null,

        label: {
            // If rotate around circle
            rotate: false,
            show: true,
            // 'outer', 'inside', 'center'
            position: 'outer'
            // formatter: 标签文本格式器，同Tooltip.formatter，不支持异步回调
            // 默认使用全局文本样式，详见TEXTSTYLE
            // distance: 当position为inner时有效，为label位置到圆心的距离与圆半径(环状图为内外半径和)的比例系数
        },
        // Enabled when label.normal.position is 'outer'
        labelLine: {
            show: true,
            // 引导线两段中的第一段长度
            length: 15,
            // 引导线两段中的第二段长度
            length2: 15,
            smooth: false,
            lineStyle: {
                // color: 各异,
                width: 1,
                type: 'solid'
            }
        },
        itemStyle: {
            borderWidth: 1
        },

        // Animation type canbe expansion, scale
        animationType: 'expansion',

        animationEasing: 'cubicOut'
    }
});

mixin(PieSeries, dataSelectableMixin);

/**
 * @param {module:echarts/model/Series} seriesModel
 * @param {boolean} hasAnimation
 * @inner
 */
function updateDataSelected(uid, seriesModel, hasAnimation, api) {
    var data = seriesModel.getData();
    var dataIndex = this.dataIndex;
    var name = data.getName(dataIndex);
    var selectedOffset = seriesModel.get('selectedOffset');

    api.dispatchAction({
        type: 'pieToggleSelect',
        from: uid,
        name: name,
        seriesId: seriesModel.id
    });

    data.each(function (idx) {
        toggleItemSelected(
            data.getItemGraphicEl(idx),
            data.getItemLayout(idx),
            seriesModel.isSelected(data.getName(idx)),
            selectedOffset,
            hasAnimation
        );
    });
}

/**
 * @param {module:zrender/graphic/Sector} el
 * @param {Object} layout
 * @param {boolean} isSelected
 * @param {number} selectedOffset
 * @param {boolean} hasAnimation
 * @inner
 */
function toggleItemSelected(el, layout, isSelected, selectedOffset, hasAnimation) {
    var midAngle = (layout.startAngle + layout.endAngle) / 2;

    var dx = Math.cos(midAngle);
    var dy = Math.sin(midAngle);

    var offset = isSelected ? selectedOffset : 0;
    var position = [dx * offset, dy * offset];

    hasAnimation
        // animateTo will stop revious animation like update transition
        ? el.animate()
            .when(200, {
                position: position
            })
            .start('bounceOut')
        : el.attr('position', position);
}

/**
 * Piece of pie including Sector, Label, LabelLine
 * @constructor
 * @extends {module:zrender/graphic/Group}
 */
function PiePiece(data, idx) {

    Group.call(this);

    var sector = new Sector({
        z2: 2
    });
    var polyline = new Polyline();
    var text = new Text();
    this.add(sector);
    this.add(polyline);
    this.add(text);

    this.updateData(data, idx, true);

    // Hover to change label and labelLine
    function onEmphasis() {
        polyline.ignore = polyline.hoverIgnore;
        text.ignore = text.hoverIgnore;
    }
    function onNormal() {
        polyline.ignore = polyline.normalIgnore;
        text.ignore = text.normalIgnore;
    }
    this.on('emphasis', onEmphasis)
        .on('normal', onNormal)
        .on('mouseover', onEmphasis)
        .on('mouseout', onNormal);
}

var piePieceProto = PiePiece.prototype;

piePieceProto.updateData = function (data, idx, firstCreate) {

    var sector = this.childAt(0);

    var seriesModel = data.hostModel;
    var itemModel = data.getItemModel(idx);
    var layout = data.getItemLayout(idx);
    var sectorShape = extend({}, layout);
    sectorShape.label = null;

    if (firstCreate) {
        sector.setShape(sectorShape);

        var animationType = seriesModel.getShallow('animationType');
        if (animationType === 'scale') {
            sector.shape.r = layout.r0;
            initProps(sector, {
                shape: {
                    r: layout.r
                }
            }, seriesModel, idx);
        }
        // Expansion
        else {
            sector.shape.endAngle = layout.startAngle;
            updateProps(sector, {
                shape: {
                    endAngle: layout.endAngle
                }
            }, seriesModel, idx);
        }

    }
    else {
        updateProps(sector, {
            shape: sectorShape
        }, seriesModel, idx);
    }

    // Update common style
    var visualColor = data.getItemVisual(idx, 'color');

    sector.useStyle(
        defaults(
            {
                lineJoin: 'bevel',
                fill: visualColor
            },
            itemModel.getModel('itemStyle').getItemStyle()
        )
    );
    sector.hoverStyle = itemModel.getModel('emphasis.itemStyle').getItemStyle();

    var cursorStyle = itemModel.getShallow('cursor');
    cursorStyle && sector.attr('cursor', cursorStyle);

    // Toggle selected
    toggleItemSelected(
        this,
        data.getItemLayout(idx),
        seriesModel.isSelected(null, idx),
        seriesModel.get('selectedOffset'),
        seriesModel.get('animation')
    );

    function onEmphasis() {
        // Sector may has animation of updating data. Force to move to the last frame
        // Or it may stopped on the wrong shape
        sector.stopAnimation(true);
        sector.animateTo({
            shape: {
                r: layout.r + seriesModel.get('hoverOffset')
            }
        }, 300, 'elasticOut');
    }
    function onNormal() {
        sector.stopAnimation(true);
        sector.animateTo({
            shape: {
                r: layout.r
            }
        }, 300, 'elasticOut');
    }
    sector.off('mouseover').off('mouseout').off('emphasis').off('normal');
    if (itemModel.get('hoverAnimation') && seriesModel.isAnimationEnabled()) {
        sector
            .on('mouseover', onEmphasis)
            .on('mouseout', onNormal)
            .on('emphasis', onEmphasis)
            .on('normal', onNormal);
    }

    this._updateLabel(data, idx);

    setHoverStyle(this);
};

piePieceProto._updateLabel = function (data, idx) {

    var labelLine = this.childAt(1);
    var labelText = this.childAt(2);

    var seriesModel = data.hostModel;
    var itemModel = data.getItemModel(idx);
    var layout = data.getItemLayout(idx);
    var labelLayout = layout.label;
    var visualColor = data.getItemVisual(idx, 'color');

    updateProps(labelLine, {
        shape: {
            points: labelLayout.linePoints || [
                [labelLayout.x, labelLayout.y], [labelLayout.x, labelLayout.y], [labelLayout.x, labelLayout.y]
            ]
        }
    }, seriesModel, idx);

    updateProps(labelText, {
        style: {
            x: labelLayout.x,
            y: labelLayout.y
        }
    }, seriesModel, idx);
    labelText.attr({
        rotation: labelLayout.rotation,
        origin: [labelLayout.x, labelLayout.y],
        z2: 10
    });

    var labelModel = itemModel.getModel('label');
    var labelHoverModel = itemModel.getModel('emphasis.label');
    var labelLineModel = itemModel.getModel('labelLine');
    var labelLineHoverModel = itemModel.getModel('emphasis.labelLine');
    var visualColor = data.getItemVisual(idx, 'color');

    setLabelStyle(
        labelText.style, labelText.hoverStyle = {}, labelModel, labelHoverModel,
        {
            labelFetcher: data.hostModel,
            labelDataIndex: idx,
            defaultText: data.getName(idx),
            autoColor: visualColor,
            useInsideStyle: !!labelLayout.inside
        },
        {
            textAlign: labelLayout.textAlign,
            textVerticalAlign: labelLayout.verticalAlign,
            opacity: data.getItemVisual(idx, 'opacity')
        }
    );

    labelText.ignore = labelText.normalIgnore = !labelModel.get('show');
    labelText.hoverIgnore = !labelHoverModel.get('show');

    labelLine.ignore = labelLine.normalIgnore = !labelLineModel.get('show');
    labelLine.hoverIgnore = !labelLineHoverModel.get('show');

    // Default use item visual color
    labelLine.setStyle({
        stroke: visualColor,
        opacity: data.getItemVisual(idx, 'opacity')
    });
    labelLine.setStyle(labelLineModel.getModel('lineStyle').getLineStyle());

    labelLine.hoverStyle = labelLineHoverModel.getModel('lineStyle').getLineStyle();

    var smooth = labelLineModel.get('smooth');
    if (smooth && smooth === true) {
        smooth = 0.4;
    }
    labelLine.setShape({
        smooth: smooth
    });
};

inherits(PiePiece, Group);


// Pie view
var PieView = Chart.extend({

    type: 'pie',

    init: function () {
        var sectorGroup = new Group();
        this._sectorGroup = sectorGroup;
    },

    render: function (seriesModel, ecModel, api, payload) {
        if (payload && (payload.from === this.uid)) {
            return;
        }

        var data = seriesModel.getData();
        var oldData = this._data;
        var group = this.group;

        var hasAnimation = ecModel.get('animation');
        var isFirstRender = !oldData;
        var animationType = seriesModel.get('animationType');

        var onSectorClick = curry(
            updateDataSelected, this.uid, seriesModel, hasAnimation, api
        );

        var selectedMode = seriesModel.get('selectedMode');

        data.diff(oldData)
            .add(function (idx) {
                var piePiece = new PiePiece(data, idx);
                // Default expansion animation
                if (isFirstRender && animationType !== 'scale') {
                    piePiece.eachChild(function (child) {
                        child.stopAnimation(true);
                    });
                }

                selectedMode && piePiece.on('click', onSectorClick);

                data.setItemGraphicEl(idx, piePiece);

                group.add(piePiece);
            })
            .update(function (newIdx, oldIdx) {
                var piePiece = oldData.getItemGraphicEl(oldIdx);

                piePiece.updateData(data, newIdx);

                piePiece.off('click');
                selectedMode && piePiece.on('click', onSectorClick);
                group.add(piePiece);
                data.setItemGraphicEl(newIdx, piePiece);
            })
            .remove(function (idx) {
                var piePiece = oldData.getItemGraphicEl(idx);
                group.remove(piePiece);
            })
            .execute();

        if (
            hasAnimation && isFirstRender && data.count() > 0
            // Default expansion animation
            && animationType !== 'scale'
        ) {
            var shape = data.getItemLayout(0);
            var r = Math.max(api.getWidth(), api.getHeight()) / 2;

            var removeClipPath = bind(group.removeClipPath, group);
            group.setClipPath(this._createClipPath(
                shape.cx, shape.cy, r, shape.startAngle, shape.clockwise, removeClipPath, seriesModel
            ));
        }

        this._data = data;
    },

    dispose: function () {},

    _createClipPath: function (
        cx, cy, r, startAngle, clockwise, cb, seriesModel
    ) {
        var clipPath = new Sector({
            shape: {
                cx: cx,
                cy: cy,
                r0: 0,
                r: r,
                startAngle: startAngle,
                endAngle: startAngle,
                clockwise: clockwise
            }
        });

        initProps(clipPath, {
            shape: {
                endAngle: startAngle + (clockwise ? 1 : -1) * Math.PI * 2
            }
        }, seriesModel, cb);

        return clipPath;
    },

    /**
     * @implement
     */
    containPoint: function (point, seriesModel) {
        var data = seriesModel.getData();
        var itemLayout = data.getItemLayout(0);
        if (itemLayout) {
            var dx = point[0] - itemLayout.cx;
            var dy = point[1] - itemLayout.cy;
            var radius = Math.sqrt(dx * dx + dy * dy);
            return radius <= itemLayout.r && radius >= itemLayout.r0;
        }
    }

});

var createDataSelectAction = function (seriesType, actionInfos) {
    each$1(actionInfos, function (actionInfo) {
        actionInfo.update = 'updateView';
        /**
         * @payload
         * @property {string} seriesName
         * @property {string} name
         */
        registerAction(actionInfo, function (payload, ecModel) {
            var selected = {};
            ecModel.eachComponent(
                {mainType: 'series', subType: seriesType, query: payload},
                function (seriesModel) {
                    if (seriesModel[actionInfo.method]) {
                        seriesModel[actionInfo.method](
                            payload.name,
                            payload.dataIndex
                        );
                    }
                    var data = seriesModel.getData();
                    // Create selected map
                    data.each(function (idx) {
                        var name = data.getName(idx);
                        selected[name] = seriesModel.isSelected(name)
                            || false;
                    });
                }
            );
            return {
                name: payload.name,
                selected: selected
            };
        });
    });
};

// Pick color from palette for each data item.
// Applicable for charts that require applying color palette
// in data level (like pie, funnel, chord).
var dataColor = function (seriesType) {
    return {
        getTargetSeries: function (ecModel) {
            // Pie and funnel may use diferrent scope
            var paletteScope = {};
            var seiresModelMap = createHashMap();

            ecModel.eachSeriesByType(seriesType, function (seriesModel) {
                seriesModel.__paletteScope = paletteScope;
                seiresModelMap.set(seriesModel.uid, seriesModel);
            });

            return seiresModelMap;
        },
        reset: function (seriesModel, ecModel) {
            var dataAll = seriesModel.getRawData();
            var idxMap = {};
            var data = seriesModel.getData();

            data.each(function (idx) {
                var rawIdx = data.getRawIndex(idx);
                idxMap[rawIdx] = idx;
            });

            dataAll.each(function (rawIdx) {
                var filteredIdx = idxMap[rawIdx];

                // If series.itemStyle.normal.color is a function. itemVisual may be encoded
                var singleDataColor = filteredIdx != null
                    && data.getItemVisual(filteredIdx, 'color', true);

                if (!singleDataColor) {
                    // FIXME Performance
                    var itemModel = dataAll.getItemModel(rawIdx);

                    var color = itemModel.get('itemStyle.color')
                        || seriesModel.getColorFromPalette(
                            dataAll.getName(rawIdx) || (rawIdx + ''), seriesModel.__paletteScope,
                            dataAll.count()
                        );
                    // Legend may use the visual info in data before processed
                    dataAll.setItemVisual(rawIdx, 'color', color);

                    // Data is not filtered
                    if (filteredIdx != null) {
                        data.setItemVisual(filteredIdx, 'color', color);
                    }
                }
                else {
                    // Set data all color for legend
                    dataAll.setItemVisual(rawIdx, 'color', singleDataColor);
                }
            });
        }
    };
};

// FIXME emphasis label position is not same with normal label position

function adjustSingleSide(list, cx, cy, r, dir, viewWidth, viewHeight) {
    list.sort(function (a, b) {
        return a.y - b.y;
    });

    // 压
    function shiftDown(start, end, delta, dir) {
        for (var j = start; j < end; j++) {
            list[j].y += delta;
            if (j > start
                && j + 1 < end
                && list[j + 1].y > list[j].y + list[j].height
            ) {
                shiftUp(j, delta / 2);
                return;
            }
        }

        shiftUp(end - 1, delta / 2);
    }

    // 弹
    function shiftUp(end, delta) {
        for (var j = end; j >= 0; j--) {
            list[j].y -= delta;
            if (j > 0
                && list[j].y > list[j - 1].y + list[j - 1].height
            ) {
                break;
            }
        }
    }

    function changeX(list, isDownList, cx, cy, r, dir) {
        var lastDeltaX = dir > 0
            ? isDownList                // 右侧
                ? Number.MAX_VALUE      // 下
                : 0                     // 上
            : isDownList                // 左侧
                ? Number.MAX_VALUE      // 下
                : 0;                    // 上

        for (var i = 0, l = list.length; i < l; i++) {
            // Not change x for center label
            if (list[i].position === 'center') {
                continue;
            }
            var deltaY = Math.abs(list[i].y - cy);
            var length = list[i].len;
            var length2 = list[i].len2;
            var deltaX = (deltaY < r + length)
                ? Math.sqrt(
                        (r + length + length2) * (r + length + length2)
                        - deltaY * deltaY
                    )
                : Math.abs(list[i].x - cx);
            if (isDownList && deltaX >= lastDeltaX) {
                // 右下，左下
                deltaX = lastDeltaX - 10;
            }
            if (!isDownList && deltaX <= lastDeltaX) {
                // 右上，左上
                deltaX = lastDeltaX + 10;
            }

            list[i].x = cx + deltaX * dir;
            lastDeltaX = deltaX;
        }
    }

    var lastY = 0;
    var delta;
    var len = list.length;
    var upList = [];
    var downList = [];
    for (var i = 0; i < len; i++) {
        delta = list[i].y - lastY;
        if (delta < 0) {
            shiftDown(i, len, -delta, dir);
        }
        lastY = list[i].y + list[i].height;
    }
    if (viewHeight - lastY < 0) {
        shiftUp(len - 1, lastY - viewHeight);
    }
    for (var i = 0; i < len; i++) {
        if (list[i].y >= cy) {
            downList.push(list[i]);
        }
        else {
            upList.push(list[i]);
        }
    }
    changeX(upList, false, cx, cy, r, dir);
    changeX(downList, true, cx, cy, r, dir);
}

function avoidOverlap(labelLayoutList, cx, cy, r, viewWidth, viewHeight) {
    var leftList = [];
    var rightList = [];
    for (var i = 0; i < labelLayoutList.length; i++) {
        if (labelLayoutList[i].x < cx) {
            leftList.push(labelLayoutList[i]);
        }
        else {
            rightList.push(labelLayoutList[i]);
        }
    }

    adjustSingleSide(rightList, cx, cy, r, 1, viewWidth, viewHeight);
    adjustSingleSide(leftList, cx, cy, r, -1, viewWidth, viewHeight);

    for (var i = 0; i < labelLayoutList.length; i++) {
        var linePoints = labelLayoutList[i].linePoints;
        if (linePoints) {
            var dist = linePoints[1][0] - linePoints[2][0];
            if (labelLayoutList[i].x < cx) {
                linePoints[2][0] = labelLayoutList[i].x + 3;
            }
            else {
                linePoints[2][0] = labelLayoutList[i].x - 3;
            }
            linePoints[1][1] = linePoints[2][1] = labelLayoutList[i].y;
            linePoints[1][0] = linePoints[2][0] + dist;
        }
    }
}

var labelLayout = function (seriesModel, r, viewWidth, viewHeight) {
    var data = seriesModel.getData();
    var labelLayoutList = [];
    var cx;
    var cy;
    var hasLabelRotate = false;

    data.each(function (idx) {
        var layout = data.getItemLayout(idx);

        var itemModel = data.getItemModel(idx);
        var labelModel = itemModel.getModel('label');
        // Use position in normal or emphasis
        var labelPosition = labelModel.get('position') || itemModel.get('emphasis.label.position');

        var labelLineModel = itemModel.getModel('labelLine');
        var labelLineLen = labelLineModel.get('length');
        var labelLineLen2 = labelLineModel.get('length2');

        var midAngle = (layout.startAngle + layout.endAngle) / 2;
        var dx = Math.cos(midAngle);
        var dy = Math.sin(midAngle);

        var textX;
        var textY;
        var linePoints;
        var textAlign;

        cx = layout.cx;
        cy = layout.cy;

        var isLabelInside = labelPosition === 'inside' || labelPosition === 'inner';
        if (labelPosition === 'center') {
            textX = layout.cx;
            textY = layout.cy;
            textAlign = 'center';
        }
        else {
            var x1 = (isLabelInside ? (layout.r + layout.r0) / 2 * dx : layout.r * dx) + cx;
            var y1 = (isLabelInside ? (layout.r + layout.r0) / 2 * dy : layout.r * dy) + cy;

            textX = x1 + dx * 3;
            textY = y1 + dy * 3;

            if (!isLabelInside) {
                // For roseType
                var x2 = x1 + dx * (labelLineLen + r - layout.r);
                var y2 = y1 + dy * (labelLineLen + r - layout.r);
                var x3 = x2 + ((dx < 0 ? -1 : 1) * labelLineLen2);
                var y3 = y2;

                textX = x3 + (dx < 0 ? -5 : 5);
                textY = y3;
                linePoints = [[x1, y1], [x2, y2], [x3, y3]];
            }

            textAlign = isLabelInside ? 'center' : (dx > 0 ? 'left' : 'right');
        }
        var font = labelModel.getFont();

        var labelRotate = labelModel.get('rotate')
            ? (dx < 0 ? -midAngle + Math.PI : -midAngle) : 0;
        var text = seriesModel.getFormattedLabel(idx, 'normal')
                    || data.getName(idx);
        var textRect = getBoundingRect(
            text, font, textAlign, 'top'
        );
        hasLabelRotate = !!labelRotate;
        layout.label = {
            x: textX,
            y: textY,
            position: labelPosition,
            height: textRect.height,
            len: labelLineLen,
            len2: labelLineLen2,
            linePoints: linePoints,
            textAlign: textAlign,
            verticalAlign: 'middle',
            rotation: labelRotate,
            inside: isLabelInside
        };

        // Not layout the inside label
        if (!isLabelInside) {
            labelLayoutList.push(layout.label);
        }
    });
    if (!hasLabelRotate && seriesModel.get('avoidLabelOverlap')) {
        avoidOverlap(labelLayoutList, cx, cy, r, viewWidth, viewHeight);
    }
};

var PI2$4 = Math.PI * 2;
var RADIAN = Math.PI / 180;

var pieLayout = function (seriesType, ecModel, api, payload) {
    ecModel.eachSeriesByType(seriesType, function (seriesModel) {
        var data = seriesModel.getData();
        var valueDim = data.mapDimension('value');

        var center = seriesModel.get('center');
        var radius = seriesModel.get('radius');

        if (!isArray(radius)) {
            radius = [0, radius];
        }
        if (!isArray(center)) {
            center = [center, center];
        }

        var width = api.getWidth();
        var height = api.getHeight();
        var size = Math.min(width, height);
        var cx = parsePercent$1(center[0], width);
        var cy = parsePercent$1(center[1], height);
        var r0 = parsePercent$1(radius[0], size / 2);
        var r = parsePercent$1(radius[1], size / 2);

        var startAngle = -seriesModel.get('startAngle') * RADIAN;

        var minAngle = seriesModel.get('minAngle') * RADIAN;

        var validDataCount = 0;
        data.each(valueDim, function (value) {
            !isNaN(value) && validDataCount++;
        });

        var sum = data.getSum(valueDim);
        // Sum may be 0
        var unitRadian = Math.PI / (sum || validDataCount) * 2;

        var clockwise = seriesModel.get('clockwise');

        var roseType = seriesModel.get('roseType');
        var stillShowZeroSum = seriesModel.get('stillShowZeroSum');

        // [0...max]
        var extent = data.getDataExtent(valueDim);
        extent[0] = 0;

        // In the case some sector angle is smaller than minAngle
        var restAngle = PI2$4;
        var valueSumLargerThanMinAngle = 0;

        var currentAngle = startAngle;
        var dir = clockwise ? 1 : -1;

        data.each(valueDim, function (value, idx) {
            var angle;
            if (isNaN(value)) {
                data.setItemLayout(idx, {
                    angle: NaN,
                    startAngle: NaN,
                    endAngle: NaN,
                    clockwise: clockwise,
                    cx: cx,
                    cy: cy,
                    r0: r0,
                    r: roseType
                        ? NaN
                        : r
                });
                return;
            }

            // FIXME 兼容 2.0 但是 roseType 是 area 的时候才是这样？
            if (roseType !== 'area') {
                angle = (sum === 0 && stillShowZeroSum)
                    ? unitRadian : (value * unitRadian);
            }
            else {
                angle = PI2$4 / validDataCount;
            }

            if (angle < minAngle) {
                angle = minAngle;
                restAngle -= minAngle;
            }
            else {
                valueSumLargerThanMinAngle += value;
            }

            var endAngle = currentAngle + dir * angle;
            data.setItemLayout(idx, {
                angle: angle,
                startAngle: currentAngle,
                endAngle: endAngle,
                clockwise: clockwise,
                cx: cx,
                cy: cy,
                r0: r0,
                r: roseType
                    ? linearMap(value, extent, [r0, r])
                    : r
            });

            currentAngle = endAngle;
        });

        // Some sector is constrained by minAngle
        // Rest sectors needs recalculate angle
        if (restAngle < PI2$4 && validDataCount) {
            // Average the angle if rest angle is not enough after all angles is
            // Constrained by minAngle
            if (restAngle <= 1e-3) {
                var angle = PI2$4 / validDataCount;
                data.each(valueDim, function (value, idx) {
                    if (!isNaN(value)) {
                        var layout = data.getItemLayout(idx);
                        layout.angle = angle;
                        layout.startAngle = startAngle + dir * idx * angle;
                        layout.endAngle = startAngle + dir * (idx + 1) * angle;
                    }
                });
            }
            else {
                unitRadian = restAngle / valueSumLargerThanMinAngle;
                currentAngle = startAngle;
                data.each(valueDim, function (value, idx) {
                    if (!isNaN(value)) {
                        var layout = data.getItemLayout(idx);
                        var angle = layout.angle === minAngle
                            ? minAngle : value * unitRadian;
                        layout.startAngle = currentAngle;
                        layout.endAngle = currentAngle + dir * angle;
                        currentAngle += dir * angle;
                    }
                });
            }
        }

        labelLayout(seriesModel, r, width, height);
    });
};

var dataFilter = function (seriesType) {
    return {
        seriesType: seriesType,
        reset: function (seriesModel, ecModel) {
            var legendModels = ecModel.findComponents({
                mainType: 'legend'
            });
            if (!legendModels || !legendModels.length) {
                return;
            }
            var data = seriesModel.getData();
            data.filterSelf(function (idx) {
                var name = data.getName(idx);
                // If in any legend component the status is not selected.
                for (var i = 0; i < legendModels.length; i++) {
                    if (!legendModels[i].isSelected(name)) {
                        return false;
                    }
                }
                return true;
            });
        }
    };
};

createDataSelectAction('pie', [{
    type: 'pieToggleSelect',
    event: 'pieselectchanged',
    method: 'toggleSelected'
}, {
    type: 'pieSelect',
    event: 'pieselected',
    method: 'select'
}, {
    type: 'pieUnSelect',
    event: 'pieunselected',
    method: 'unSelect'
}]);

registerVisual(dataColor('pie'));
registerLayout(curry(pieLayout, 'pie'));
registerProcessor(dataFilter('pie'));

exports.version = version;
exports.dependencies = dependencies;
exports.PRIORITY = PRIORITY;
exports.init = init;
exports.connect = connect;
exports.disConnect = disConnect;
exports.disconnect = disconnect;
exports.dispose = dispose;
exports.getInstanceByDom = getInstanceByDom;
exports.getInstanceById = getInstanceById;
exports.registerTheme = registerTheme;
exports.registerPreprocessor = registerPreprocessor;
exports.registerProcessor = registerProcessor;
exports.registerPostUpdate = registerPostUpdate;
exports.registerAction = registerAction;
exports.registerCoordinateSystem = registerCoordinateSystem;
exports.getCoordinateSystemDimensions = getCoordinateSystemDimensions;
exports.registerLayout = registerLayout;
exports.registerVisual = registerVisual;
exports.registerLoading = registerLoading;
exports.extendComponentModel = extendComponentModel;
exports.extendComponentView = extendComponentView;
exports.extendSeriesModel = extendSeriesModel;
exports.extendChartView = extendChartView;
exports.setCanvasCreator = setCanvasCreator;
exports.registerMap = registerMap;
exports.getMap = getMap;
exports.dataTool = dataTool;

})));
