forked from: forked from: fladdict challenge for amateurs

画面いっぱいに描画されたらリロードお願いします。
Every frame you get screen caputre of the stage.
* Generate new frame image with using last frames screen capture.
* This is a starting point of recursive generative art.

by h_sakurai 12 Jul 2009

• Forked from cda244's forked from: fladdict challenge for amateurs
• Diff: 10
• Related works: 58
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/**
 * Copyright h_sakurai ( http://wonderfl.net/user/h_sakurai )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/doYM
 */

// forked from cda244's forked from: fladdict challenge for amateurs
// forked from checkmate's fladdict challenge for amateurs
//画面いっぱいに描画されたらリロードお願いします。
/**
 * Every frame you get screen caputre of the stage.
 * Generate new frame image with using last frames screen capture.
 * This is a starting point of recursive generative art.
 */
package {
    import flash.display.Bitmap;
    import flash.display.BitmapData;
    import flash.display.BlendMode;
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.geom.ColorTransform;
    import flash.geom.Matrix;
    import flash.geom.Point;
    import flash.utils.getTimer;
    
    public class Beginner extends Sprite {
        /**
         * Overwrite this update function.
         * Every frame the function is invoked with two bitmaps.
         * First one contains reference to the stage bitmap.
         * Second one contains static copy of stage.
         */
         
        public var canvas:BitmapData;
        public var drawHere:BitmapData;
        public var mat:Matrix;
         
        public function update():void{
            drawStep();
            transformStep();
            
            renderStep();
            fadeStep();
        }
        
        
        public function drawStep():void {
	    var rnd:Number = Math.random();
            drawHere.setPixel( (getTimer()%480)*rnd, (getTimer()%480)*rnd, 0xffffffff);
            rnd = Math.random();
            drawHere.setPixel( (getTimer()%480)*rnd, (getTimer()%480)*rnd, 0xff000000);
            for(var i:int = 0; i < 80; i++) {
		rnd = Math.random();
                drawHere.setPixel( 20*rnd+230, 20*rnd+230, 0xff000000);
            }
        }
    
        
        public function transformStep():void
        {
            var rnd:Number = Math.random();
            mat = new Matrix();
            mat.translate(-240,-240);
            mat.scale(rnd+1, rnd+1);
            mat.rotate(-rnd);
            mat.translate(240,240);
						
        }
        
        
        public function renderStep():void{
           canvas.draw(drawHere, mat, null,BlendMode.SCREEN);
        }
        
        
        public function fadeStep():void
        {
         canvas.colorTransform(drawHere.rect, new ColorTransform(
																																 Math.random()*0.4+0.6, Math.random()*0.4+0.6, Math.random()*0.4+0.6, 1,
																																 0, 0, 0, 0));
        }
        
        
        /**
         * ---------------------------------------
         * DO NOT CHANGE FOLLOWING CODES
         * DO NOT ACCESS FOLLOWING PROPERTIES DIRECTLY
         * ---------------------------------------
        */
        
       
        private var bitmap:Bitmap;
        
        
        public function Beginner() {
            canvas = new BitmapData(480,480,false,0x000000);
            bitmap = new Bitmap(canvas);
            addChild(bitmap);
            addEventListener(Event.ENTER_FRAME, _update);
        }
        
        public function _update(e:Event):void{
            if(drawHere)
                drawHere.dispose();
            drawHere = canvas.clone();
            update();
        }
    }
}