flash on 2012-4-12

...
@author jc at bk-zen.com

by bkzen 12 Apr 2012

Embed

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

package  
{
    import flash.display.Bitmap;
    import flash.display.BitmapData;
    import flash.display.Sprite;
    import flash.events.Event;
    /**
     * ...
     * @author jc at bk-zen.com
     */
    [SWF (backgroundColor = "0x000000", frameRate = "30", width = "465", height = "465")]
    public class Test91 extends Sprite
    {
        private var bmd: BitmapData;
        private var t: int;
        
        public function Test91() 
        {
            if (stage) init();
            else addEventListener(Event.ADDED_TO_STAGE, init);
        }
        
        private function init(e: Event = null): void 
        {
            removeEventListener(Event.ADDED_TO_STAGE, init);
            //
            addChild(new Bitmap(bmd = new BitmapData(stage.stageWidth, stage.stageHeight, false, 0), "auto", true));
            t = 0;
            //bmd.setPixel(stage.stageWidth >> 1, 0, 0xFFFFFF);
            addEventListener(Event.ENTER_FRAME, loop);
        }
        
        private function loop(e: Event): void 
        {
            bmd.lock();
            var w: int = bmd.width, h: int = bmd.height, i: int, f: int;
            if (t < h) 
            {
                for (i = 0; i < w; i++) 
                {
                    f = ((f << 1) | (bmd.getPixel(i, t) & 1)) & 7;
                    //if (f > 0 && f < 5) 
                    if (!(f == 1 || f == 3 || f == 4 || f == 6)) 
                    //if (f == 1 || f == 3 || f == 4 || f == 6) 
                        bmd.setPixel(i - 1, t + 1, 0xFFFFFF);
                }
                t++;
            }
            else 
            {
                removeEventListener(Event.ENTER_FRAME, loop);
            }
            bmd.unlock();
        }
    }
}