ink blot? for better performance

/**
 * Copyright halfmile ( http://wonderfl.net/user/halfmile )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/fF32
 */

// forked from nitoyon's Hello World!!!
package{
	import flash.display.*;
	import flash.events.Event;
	import flash.filters.*;
	import flash.geom.*;
	import flash.text.*;
	import flash.utils.*;
	
	public class InkBlot extends Sprite{
		
		/**
		 * a bit map data container to get font presentation
		 */
		private var bd:BitmapData;
		
		/**
		 * a container for dots 
		 */
//		private var container:Sprite;
		
		private static const DOT_SIZE:int = 5;
		
		public function InkBlot():void{
			if(this.stage) init()
			else addEventListener(Event.ADDED_TO_STAGE, init);
		}
		
		private function init():void{
			removeEventListener(Event.ADDED_TO_STAGE,init);
			
			addChild(new Gradient(stage.width, stage.height));
			
			
			var container:Sprite = new Sprite();
			
			
			var tf:TextField = new TextField();
			tf.defaultTextFormat=new TextFormat('_sans',DOT_SIZE*15,0,true);
			tf.textColor = 0x000000;
			tf.text = "中发白";
			tf.autoSize = "left";
			
			bd = new BitmapData(tf.width, tf.height, false, 0xffffff);
			bd.draw(tf);
			bd.applyFilter(bd, bd.rect, new Point(), new BlurFilter());
			bd.draw(tf);
			
			for(var i:int = 0; i < bd.width; i++){
				for(var j:int = 0; j < bd.height; j++){
					
					// bypadd empty area 
					if (bd.getPixel(i,j)!==0 || Math.random() < .8) continue;
					
					var radius:Number = Math.pow(Math.random(),4)*DOT_SIZE+1;
					
					var c:Sprite=new Circle(bd.getPixel(i, j),radius);
					
					if (radius >= DOT_SIZE){
						c.filters = [
							new BlurFilter(2, 2, BitmapFilterQuality.MEDIUM)
						];
					}
					
					container.addChild(c);
//					c.x=i*DOT_SIZE-DOT_SIZE;
//					c.y=j*DOT_SIZE-DOT_SIZE;
					c.x =i; c.y =j;
					c.scaleX=c.scaleY=1;
					
				}
			}
			
//			container.filters = [
//				new BlurFilter(2, 2, BitmapFilterQuality.MEDIUM)
//			];
			
			bd = new BitmapData(container.width * 1.5, container.height * 1.5, true, 0xffffff);
			bd.draw(container);
			
//			removeChild(container);
//			addChild(new Bitmap(bd));
			addChild(container);
//			delete container;
			
		}
	}
}


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

class Circle extends Sprite{
	public function Circle(color:uint,s:Number):void{
		graphics.beginFill(color);
		graphics.drawCircle(0, 0, s);
		graphics.endFill();		
	}
}

class Gradient extends Sprite{
	public function Gradient(w:int, h:int):void{
		
//		trace("w:"+w+"; h:"+h)
		
		//Type of Gradient we will be using
		var fType:String = GradientType.LINEAR;
		//Colors of our gradient in the form of an array
		var colors:Array = [ 0xff00dd, 0x33ff55 ];
		//Store the Alpha Values in the form of an array
		var alphas:Array = [ 1, 1 ];
		//Array of color distribution ratios.  
		//The value defines percentage of the width where the color is sampled at 100%
		var ratios:Array = [ 0, 255 ];
		//Create a Matrix instance and assign the Gradient Box
		var matr:Matrix = new Matrix();
		matr.createGradientBox( 200, 20, 0, 0, 0 );
		//SpreadMethod will define how the gradient is spread. Note!!! Flash uses CONSTANTS to represent String literals
		var sprMethod:String = SpreadMethod.PAD;
		//Start the Gradietn and pass our variables to it
		var sprite:Sprite = new Sprite();
		//Save typing + increase performance through local reference to a Graphics object
		var g:Graphics = sprite.graphics;
		graphics.beginGradientFill( fType, colors, alphas, ratios, matr, sprMethod );
//		g.beginGradientFill( fType, colors, alphas, ratios, matr, sprMethod );
		graphics.drawRect( 0, 0, 800, 600);
//		g.drawRect( 0, 0, 800, 600);
		graphics.endFill();	

	}
}