gistfile1.as

package 
{
  import flash.display.BitmapData;
	import flash.display.Sprite;
	import flash.display.Stage;
	import flash.events.Event;
	import flash.geom.Rectangle;
	import flash.text.TextField;
	import flash.utils.getTimer;
	import flash.utils.setInterval;

	/**
	 * ...
	 * @author ryzed
	 */
	[Frame(factoryClass="Preloader")]
	public class Main extends Sprite 
	{

		public var maxFPS : int;
		protected var fps : TextField;
		protected var bitmapData : BitmapData;
		public var colorModifier : int;
		public var bdrc : Rectangle;
		public var outPixels : Vector.<uint>;
		public var srcPixels : Vector.<uint>;
		public var stH : int;
		public var stW : int;

		
		
		public function Main():void 
		{
			if (stage) init();
			else addEventListener(Event.ADDED_TO_STAGE, init);
		}

		private function init(e:Event = null):void 
		{
			removeEventListener(Event.ADDED_TO_STAGE, init);
			// entry point
			
			
			var w : int = (stage.stageWidth);
			var h : int = (stage.stageHeight);
			this.stW = w;
			this.stH = h;
			this.bitmapData = new flash.display.BitmapData(w,h,false,0);
			stage.addChild(new flash.display.Bitmap(this.bitmapData));
			var maxIterations : int = 128;
			this.bdrc = this.bitmapData.rect;
			this.srcPixels = new Vector.<uint>(w * h,true);
			this.outPixels = new Vector.<uint>(w * h,true);
			var beforeTime : int = getTimer();
			var xtemp : Number;
			var iteration : int;
			var x0 : Number = 0;
			var y0 : Number = 0;
			var adr : int = 0;
			var iy : int = 0;
			while(iy < h) {
				var ix : int = 0;
				while(ix < w) {
					x0 = 0;
					y0 = 0;
					iteration = 128;
					while(x0 * x0 + y0 * y0 <= 4 && iteration > 0) {
						xtemp = x0 * x0 - y0 * y0 + (ix - 70000) / 50000;
						y0 = 2 * x0 * y0 + (iy - h / 0.6) / 50000;
						x0 = xtemp;
						iteration--;
					};
					this.srcPixels[adr++] = iteration;
					ix++;
				};
				iy++;
			};
			var afterTime : int = getTimer();
			var tf : flash.text.TextField = new flash.text.TextField();
			tf.width = 400;
			tf.text = "Generating fractal took " + (afterTime - beforeTime) + " ms";
			stage.addChild(tf);
			this.fps = new flash.text.TextField();
			this.fps.width = 400;
			this.fps.y = 10;
			this.fps.text = "FPS: ";
			stage.addChild(this.fps);
			this.colorModifier = 2;
			
			setInterval(runLoop, 5);
		}

		
		public function runLoop() : void {
			var w : int = this.stW;
			var h : int = this.stH;
			var cm : int = this.colorModifier;
			var bd : flash.display.BitmapData = this.bitmapData;
			var sPixels : Vector.<uint> = this.srcPixels;
			var oPixels : Vector.<uint> = this.outPixels;
			var len : int = w * h;
			var beforeTime : int = getTimer();
			var adr : int = 0;
			while(adr < len) {
				var r : uint = sPixels[adr] + cm;
				var g : uint = r + r;
				oPixels[adr++] = ((r << 16 | g << 8) | r + g);
			};
			bd.setVector(this.bdrc,oPixels);
			var afterTime : int = getTimer();
			var dt : int = afterTime - beforeTime;
			var curFPS : int = Math.round(1000 / (afterTime - beforeTime));
			if(curFPS > this.maxFPS) this.maxFPS = curFPS;
			this.fps.text = "FPS: " + curFPS + ", dt=" + dt + "\rMax FPS: " + this.maxFPS;
			this.colorModifier += 2;
			if(this.colorModifier > 65530) this.colorModifier = 0;
		}

		
		
	}

}