Interesting Static Texture

/**
 * Copyright shapevent ( http://wonderfl.net/user/shapevent )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/1vXf
 */

package {

	import flash.display.*;
	import flash.geom.*;
        import flash.filters.*;

	

       public class Texture extends MovieClip {
		private var canvas:BitmapData;
		private var w:int;
		private var w10:int;
		private var size:int;


               public function Texture(){
                  // init
			canvas = new BitmapData(1000,1000,false, 0x000000);
			addChild(new Bitmap(canvas));
			scaleX = scaleY = .465;
			
			w = canvas.width;
			w10 = w * 60;
			size = canvas.width * canvas.height;
			for (var i:int = 0; i<size; i++){
				var xp:int = i % w;
				 
				var yp:int = int(i / w);
				 
				var c1:int = (255/8) * (Math.cos(xp*  2 *Math.PI/180 ) + Math.sin((yp*yp)/w10))
				if (c1 < 0) c1 = 256 - c1
				c1 = (c1 << 1 | c1) 
				canvas.setPixel(xp, yp, c1 <<16 | c1 <<8 | c1 );
			}
			var m:Matrix = new Matrix();
			m.scale(1,-1);
			m.translate(0,canvas.height);
			var clone:BitmapData = canvas.clone();
			canvas.draw(clone, m, null, BlendMode.SUBTRACT);
			clone.draw(canvas);
			clone.applyFilter(clone, clone.rect, new Point(0,0), new BlurFilter(10,10,1));
			canvas.draw(clone, null, null, BlendMode.ADD);
			

               }
               // private methods

		

       }

}