// forked from aone's forked from: 何となくふぉーく1::forked from: Triangle in triangle // forked from szktkhr's 何となくふぉーく1::forked from: Triangle in triangle /* なんとなくふぉーく1。 */ // forked from cheesepie's Triangle in triangle package { import flash.display.*; import flash.events.Event; import flash.geom.Point; [SWF(backgroundColor="0xffffff", frameRate="30")] public class Sketch extends Sprite { private var bitmap:Bitmap; private var bitmapData:BitmapData; // private var cache:BitmapData; private var shape:Shape; private static const LEVEL_MAX:uint = 6; public function Sketch() { addEventListener(Event.ADDED_TO_STAGE, _initialize); } private function _initialize(e:Event):void { bitmapData = new BitmapData(stage.stageWidth, stage.stageHeight, false, 0xffffff); // cache = bitmapData.clone(); bitmap = addChild(new Bitmap(bitmapData)) as Bitmap; shape = new Shape(); initialize(); } public function initialize():void { addEventListener(Event.ENTER_FRAME, draw); } private function draw(e:Event):void { var s:Stage = stage; var sw:Number = s.stageWidth; var sh:Number = s.stageHeight; shape.graphics.clear(); bitmapData.fillRect(bitmapData.rect, 0xffffff); // cache.fillRect(bitmapData.rect, 0xffffff); drawTriangle(0, 0, sw, 0, 0, sh, 0); drawTriangle(sw, sh, sw, 0, 0, sh, 0); // cache.draw(shape); // bitmapData.copyPixels(cache, bitmapData.rect, new Point(0, 0)); bitmapData.draw(shape); } private function drawTriangle(ax:Number, ay:Number, bx:Number, by:Number, cx:Number, cy:Number, level:int):void { var g:Graphics = shape.graphics; g.beginFill(0xffffff); g.lineStyle(1, 0x000000); g.moveTo(ax, ay); g.lineTo(bx, by); g.lineTo(cx, cy); g.lineTo(ax, ay); g.endFill(); if (level == LEVEL_MAX) return; var ab:Number = Util.getRandomRange(0.1, 0.9); var ac:Number = Util.getRandomRange(0.1, 0.9); var bc:Number = Util.getRandomRange(0.1, 0.9); var abax_ab:Number = ax + (bx - ax) * ab; var abay_ab:Number = ay + (by - ay) * ab; var acax_ac:Number = ax + (cx - ax) * ac; var acay_ac:Number = ay + (cy - ay) * ac; var bcbx_bc:Number = bx + (cx - bx) * bc; var bcby_bc:Number = by + (cy - by) * bc; level++; drawTriangle( ax, ay, abax_ab, abay_ab, acax_ac, acay_ac, level ); drawTriangle( bx, by, abax_ab, abay_ab, bcbx_bc, bcby_bc, level ); drawTriangle( cx, cy, acax_ac, acay_ac, bcbx_bc, bcby_bc, level ); } } } internal class Util { public static function getRandomRange(min:Number, max:Number):Number { return (max - min) * Math.random() + min; } }