Beautifl - Flash Gallery

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lightning
kiyobu 2010年3月31日 MIT License
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      package {
    import flash.display.Sprite;
    import flash.display.Bitmap;
    import flash.display.BitmapData;
    import flash.events.Event;
    import flash.filters.GlowFilter;
    import flash.filters.BlurFilter;
    import flash.display.BlendMode;
    import flash.geom.ColorTransform;
    [SWF(width = "465", height = "465", backgroundColor = "0x000000", frameRate = "30")]
    public class FlashTest extends Sprite {
            public var layer:Array = new Array();
        public function FlashTest() {
                layer[0] = new Bitmap(new BitmapData(stage.stageWidth, stage.stageHeight, true, 0x00000000));
            layer[0].filters = [new BlurFilter(2,2,1)]
            layer[1] = new Sprite();
            layer[1].filters = [new BlurFilter(2,2,1), new GlowFilter(0x4411ff, 1, 32, 32, 8, 3)]
            addChild(layer[0]);
            addChild(layer[1]);
                addEventListener(Event.ENTER_FRAME, loop);
        }
        public function loop(e:Event):void{
                lightning(layer[1]);
                var cash:BitmapData = new BitmapData(stage.stageWidth, stage.stageHeight, true, 0x00000000);
                cash.draw(this, null, new ColorTransform(1,1,1,0.9), BlendMode.ADD);
               layer[0].bitmapData = cash;
        }
        public function lightning(tg:Sprite):void{
                var xx:Number = mouseX;
                var yy:Number = mouseY;
                var th:Number = random(2) +1
                tg.graphics.clear();
                tg.graphics.moveTo(xx, yy);
                while(yy < stage.stageHeight){
                    xx += random(20) * (random(2)*2 -1);
                    yy += random(30) + 4    ;
                    tg.graphics.lineStyle(th,0xffffff,1);
                    tg.graphics.lineTo(xx,yy);
                }
        }
        public function random(n:Number):Number{
                return Math.floor(Math.random() * n);
        }
    }
}