code on 2009-1-13

by mtok 13 Jan 2009

Embed

package  
{
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.MovieClip;
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.filters.ConvolutionFilter;
	import flash.geom.Point;
	import flash.geom.Rectangle;
	import flash.utils.getTimer;
	[SWF(width="465", height="465", backgroundColor="0x000000", frameRate="24")]
	public class Noise001 extends MovieClip
	{
		private var bmp:Bitmap;
		private var i:int;
		public function Noise001() 
		{
			addEventListener(Event.ADDED_TO_STAGE, addedToStage);
		}
		
		private function addedToStage(e:Event):void 
		{
			removeEventListener(e.type, arguments.callee);
			bmp = new Bitmap(new BitmapData(stage.stageWidth, stage.stageHeight, false, 0) );
			bmp.bitmapData.noise( getTimer(), 0, 8, 7, true );
			addChild(bmp);
			
			addEventListener(Event.ENTER_FRAME, enterFrame);			
		}
		
		private function enterFrame(e:Event):void 
		{
			if (i % 1000 == 0) {
				bmp.bitmapData.noise( getTimer(), 0, 8, 7, true );
			}else {
				bmp.bitmapData.applyFilter(
					bmp.bitmapData,
					new Rectangle(0, 0, 465, 465),
					new Point(),
					new ConvolutionFilter( 3, 3,
					[ 3, 3, 3, 3, 2, 3, 3, 3, 3],
					255, 0, true, false, 0, 1));
			}
			bmp.bitmapData.threshold(
				bmp.bitmapData,
				bmp.bitmapData.rect,
				new Point(),
				"==", 8, 0xFFFFFFFF, 0xFC);
			i++;
		}
		
	}
	
}