// forked from bigfish's cellular automata #3 // forked from bigfish's forked from: cellular automata #1 // forked from bigfish's cellular automata #1 package { import flash.display.Bitmap; import flash.display.BitmapData; import flash.geom.Rectangle; import flash.display.Sprite; import flash.events.Event; /** * if top + right both white --> color = left color * else --> color = opposite of left color */ public class CellularAutomata4 extends Sprite { private var bmd:BitmapData; private var canvas:Bitmap; private var rows:int = 400; private var cols:int = 400; private var left:int = cols + 1; private var right:int = cols - 1; private var rect:Rectangle = new Rectangle(0, 0, cols, rows); private var numPixels:int = rows*cols; private var pixelVector:Vector.<uint> = new Vector.<uint>(numPixels); private const WHITE:uint = 0xFFFFFFFF; private const BLACK:uint = 0xFF000000; public function CellularAutomata4() { init(); } /** * set up canvas */ private function init():void { bmd = new BitmapData(cols,rows,true,WHITE); //seed pixel bmd.setPixel(200,0,BLACK); canvas = new Bitmap(bmd); canvas.x = 20; canvas.y = 20; addChild(canvas); iterate(); //addEventListener(Event.ENTER_FRAME, iterate); } /** * apply rule to image (one iteration) */ //private function iterate(e:Event):void private function iterate():void { var opposite:uint; pixelVector = bmd.getVector(rect); for(var i:int = cols; i < numPixels; ++i) { if(i%cols > 0 && i%cols < right){ if(pixelVector[i - right] == WHITE && ( pixelVector[i - cols] == WHITE)){ pixelVector[i] = pixelVector[i - left]; } else { pixelVector[i] = pixelVector[i - left] == WHITE ? BLACK : WHITE; } } } bmd.setVector(rect, pixelVector); } } }