Forked from:: checkmate's fladdict challenge for amateurs

forked from: fladdict challenge for amateurs

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.

nasusoft

forked:0
favorite:12
lines:59
license : MIT License
modified : 2009-07-09 20:53:25

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// forked from checkmate's fladdict challenge for amateurs
/**
 * 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;
    
    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.
         */
        
        /*
            play music!
        */
         
        public var canvas:BitmapData;
        public var drawHere:BitmapData;
        public var mat:Matrix;
        
        public var cnt:Number = 0;
         
        public function update():void{
            
            drawStep();
            if (cnt < 200) {
                transformStep();
            } else {
                mat.scale(1.01, 1.01);
            }
            if (cnt > 300) {
                cnt = 0;
            }
                
            renderStep();
            fadeStep();
        
            cnt++;
        
        }
        
        
        public function drawStep():void {
            //drawHere.setPixel(stage.mouseX, stage.mouseY, 0x11111111);
            drawHere.setPixel( Math.random()*200 + 50, Math.random()*200 + 50, 0xffffffff);
        }
    
        
        public function transformStep():void
        {
            mat = new Matrix();
            mat.translate(Math.random() * 1 - 0.5, Math.random() * 1 - 0.5);
            mat.rotate(Math.random() * 1 - 0.5);
        }
        
        
        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();
        }
    }
}

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