Scripts/OtherJs/eCharts/zrender-master/src/animation/Animation.js

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/**
 * 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)
 */
define(
    function(require) {
        
        'use strict';

        var Clip = require('./Clip');
        var color = require('../tool/color');
        var util = require('../tool/util');
        var Dispatcher = require('../tool/event').Dispatcher;

        var requestAnimationFrame = window.requestAnimationFrame
                                    || window.msRequestAnimationFrame
                                    || window.mozRequestAnimationFrame
                                    || window.webkitRequestAnimationFrame
                                    || function (func) {
                                        setTimeout(func, 16);
                                    };

        var arraySlice = Array.prototype.slice;

        /**
         * @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 || {};