requestAnimationFrame対応タイマー

RAFTimerUtil.js

/* global define */
define({
		init:function(func, args){

			window.requestAnimationFrame = window.requestAnimationFrame ||
				window.mozRequestAnimationFrame ||
				window.webkitRequestAnimationFrame ||
				window.msRequestAnimationFrame ||
			function( callback ){
				window.setTimeout(callback, 1000 / 60);
			};

			window.cancelAnimationFrame = window.cancelAnimationFrame ||
				window.mozcancelAnimationFrame ||
				window.webkitcancelAnimationFrame ||
				window.mscancelAnimationFrame ||
				function(id) {
					clearTimeout(id);
				};

			this.func = func;
			this.args = args || [];
		},

		play:function(){
			this.reqId = window.requestAnimationFrame(this.loop.bind(this));
		},

		loop:function(){
			if(this.func) {
				this.func.apply(null, this.args);
			}
			this.reqId = window.requestAnimationFrame(this.loop.bind(this));
		},


		pause:function(){
			if(this.reqId){
				window.cancelAnimationFrame(this.reqId);
			}
		},

		func:null

});