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25 lines
971 B
25 lines
971 B
(function(window) {
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var lastTime = 0;
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var vendors = ['ms', 'moz', 'webkit', 'o'];
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for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
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window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame'];
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window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame'] || window[vendors[x]+'CancelRequestAnimationFrame'];
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}
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if (!window.requestAnimationFrame){
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window.requestAnimationFrame = function(callback, element) {
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var currTime = new Date().getTime();
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var timeToCall = Math.max(0, 16 - (currTime - lastTime));
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var id = window.setTimeout(function() { callback(currTime + timeToCall); },
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timeToCall);
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lastTime = currTime + timeToCall;
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return id;
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};
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}
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if (!window.cancelAnimationFrame){
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window.cancelAnimationFrame = function(id) {
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clearTimeout(id);
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};
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}
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}(this));
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