package { import flash.display.*; import flash.events.*; //図形を表示する public class Test1 extends Sprite { private var bd:BitmapData; private var rad:Number; public function Test1() { bd = new BitmapData(320, 240, false, 0x00000000); rad = 16.0; addChild(new Bitmap(bd)); addEventListener(Event.ENTER_FRAME, onEnterFrame); } private function alphaMul(scr:uint, scl:int):uint { return ((((scr>>16) & 0xff)