何となくふぉーく1::forked from: Triangle in triangle
なんとなくふぉーく1。
/*
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;
}
}