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   for (var i:int=0; i<Width; i+=step)
   {
    for (var j:int=0; j<Height; j+=step)
    {
     var color:uint=bmpData.getPixel(i,j);
     var rect:Rectangle=new Rectangle(i,j,step,step);
     bmpData.fillRect(rect,color);//Ìî³äÏñËØ
    }
   }
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package
{
import flash.display.Sprite;
import flash.display.Loader;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.events.*;
import flash.net.*;
import flash.geom.Rectangle;
public class Main extends Sprite
{
private var loader:Loader;
private var url:String="3.jpg";
private var step:int=5;
public function Main()
{
init();
}
//³õʼ»¯
private function init():void
{
loader=new Loader();//Íⲿ¼ÓÔØÒ»ÕÅͼƬ
loader.load(new URLRequest(url));
loader.contentLoaderInfo.addEventListener(Event.COMPLETE,onComplete);
}
private function onComplete(event:Event):void
{

var Width:Number=loader.content.width;
var Height:Number=loader.content.height;
addChild(new Bitmap(Bitmap(loader.content).bitmapData));

var bmpData:BitmapData=new BitmapData(Width,Height,fa