// 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; 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(); renderStep(); fadeStep(); } public function drawStep(): void { drawHere.setPixel(Math.random() * 480, Math.random() * 480, 0xffffffff); } private var scale:Number; public function transformStep(): Matrix { mat = new Matrix(); mat.translate(-240, -240); scale = Math.cos(Math.pow(getTimer(), 2) * Math.PI * 2 * .1); mat.scale(scale, scale); mat.rotate(Math.random() + .75); mat.translate(240, 240); return mat; } public function renderStep(): void { canvas.draw(drawHere, transformStep(), null, BlendMode.SCREEN); canvas.draw(drawHere, transformStep(), null, BlendMode.DIFFERENCE); canvas.draw(drawHere, transformStep(), null, BlendMode.ADD); } 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(); } } }