[JAVASCRIPT] pobierz, plaintext 
var Animation = function(canvasId){
	this.canvas = document.getElementById(canvasId);
	this.canvas.width = this.canvas.scrollWidth;
	this.canvas.height = this.canvas.scrollHeight;
	this.context = this.canvas.getContext("2d");
	this.t = 0;
	this.timeInterval = 0;
	this.startTime = 0;
	this.lastTime = 0;
	this.frame = 0;
	this.animating = false;
 
	window.requestAnimFrame = (function(callback){
		return window.requestAnimationFrame ||
		window.webkitRequestAnimationFrame ||
		window.mozRequestAnimationFrame ||
		window.oRequestAnimationFrame ||
		window.msRequestAnimationFrame ||
		function(callback){
			window.setTimeout(callback, 1000 / 60);
		};
	})();
};
 
Animation.prototype.getContext = function(){
	return this.context;
};
 
Animation.prototype.getCanvas = function(){
	return this.canvas;
};
 
Animation.prototype.clear = function(){
	this.context.clearRect(0,0, this.canvas.width, this.canvas.height);
};
 
Animation.prototype.setDrawStage = function(func) {
	this.drawStage = func;
};
 
Animation.prototype.isAnimating = function(){
	return this.animating;
};
 
Animation.prototype.getFrame = function(){
	return this.frame;
};
 
Animation.prototype.start = function(){
	this.animating = true;
	var date = new Date();
	this.startTime = date.getTime();
	this.lastTime = this.startTime;
 
	if (this.drawStage !== undefined) {
		this.drawStage();
	}
 
	this.animationLoop();
 
};
 
Animation.prototype.stop = function(){
	this.animating = false;
};
 
Animation.prototype.getTimeInterval = function(){
	return this.timeInterval;
};
 
Animation.prototype.getTime = function(){
	return this.t;
};
 
Animation.prototype.getFps = function(){
	return this.timeInterval > 0 ? 1000 / this.timeInterval : 0;
};
 
Animation.prototype.animationLoop = function(){
	var that = this;
 
	this.frame++;
	var date = new Date();
	var thisTime = date.getTime();
	this.timeInterval = thisTime - this.lastTime;
	this.t += this.timeInterval;
	this.lastTime = thisTime;
 
	if(this.drawStage !== undefined) {
		this.drawStage();
	}
 
	if(this.animating) {
		requestAnimFrame(function(){
			that.animationLoop();
		});
	}
};
[JAVASCRIPT] pobierz, plaintext