package { import flash.display.Sprite; import flash.display.Bitmap; import flash.display.BitmapData; import flash.events.MouseEvent; import flash.geom.Rectangle; public class Main extends Sprite { private var _bitmap:BitmapData= new BitmapData(stage.stageWidth,stage.stageHeight,false, 0xffffffff); public function Main ( ) { var sprite:Sprite = new Sprite( ); addChild(sprite); for(var i:int = 0; i < 200; i++) { _bitmap.fillRect(new Rectangle( Math.random( ) * stage.stageWidth, Math.random( ) * stage.stageHeight, 20, 20), Math.random( ) * 0xffffffff); } var image:Bitmap = new Bitmap(_bitmap); sprite.addChild(image); sprite.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown); } public function onMouseDown(event:MouseEvent):void { _bitmap.floodFill(mouseX, mouseY, 0xffff0000); } }}
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