forked from: C

/**
 * Copyright FTMSuperfly ( http://wonderfl.net/user/FTMSuperfly )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/mQrq
 */

package

{

    import flash.display.Bitmap;

    import flash.display.BitmapData;

    import flash.display.Shape;

    import flash.display.Sprite;

    import flash.events.Event;

    import flash.events.MouseEvent;

    import flash.geom.Rectangle;

    

    [SWF(width = "465", height = "465", backgroundColor = "0xFFFFFF", frameRate = "60")]

    

    public class Main extends Sprite

    {

        private const M_WIDTH:Number = 700;

        private const M_HEIGH:Number = 700;

        

        private var _canvas:BitmapData;

        private var _bmp:Bitmap;

        

        private var _objArray:Array;

        private var flg:Boolean = false;

        private var time:Number = 0;

        private var _sp:Sprite;

          

        //------------------------------------------------------

        //コンストラクタ

        //------------------------------------------------------

        public function Main()

        {

            _sp = new Sprite();

            _canvas = new BitmapData(M_WIDTH, M_HEIGH, true, 0x99FFFFFF);

            _bmp = new Bitmap(_canvas);

            _bmp.smoothing = true;

            _bmp.x = -M_WIDTH / 2;

            _bmp.y = -M_HEIGH / 2;

            _sp.addChild(_bmp);

            _sp.x = M_WIDTH / 2-110;

            _sp.y = M_HEIGH / 2-110;

            addChild(_sp);

            

            init();

            stage.addEventListener(MouseEvent.CLICK,onClick);

            stage.addEventListener(Event.ENTER_FRAME,enterframeHandler);

        }

        

        //------------------------------------------------------

        //初期化

        //------------------------------------------------------

        private function init():void

        {

            time = 0;

            _sp.rotation = Math.random()*360;

            _objArray = [];

            //パーティクルを初期化

            for(var i:uint = 0;i < 700;i+=50){

                for(var j:uint = 0;j < 700;j+=50){

                    var p:Particle = new Particle();

                    p.x = j;

                    p.y = i;

                    p.width = 50;

                    p.height = 50;

                    sliceObject(p);

                }

            }

            var m:Number = _objArray.length;

            for(var k:uint = 0;k < _objArray.length;k++){

                if(k < m/2){

                    _objArray[k].delay = (m/2 - k)/2 + (Math.random() * 50 - 25);

                }else{

                    _objArray[k].delay = (k - m/2)/2 + (Math.random() * 50 - 25);

                }

                if(Math.floor(p.y/50) % 2 == 0) p.y += 50;

                trace(_objArray[k].delay);

            }

        }

        

        private function sliceObject(p:Particle):void

        {

            if(p.width <= 10 || p.height <= 10 || Math.random() < 0.1){

                _objArray.push(p);

                return;

            }

            var r:Number = Math.random();

            var np:Particle = new Particle();

            if((r < 0.5 && p.width == p.height) || p.width > p.height){

                np.x = p.x+p.width/2;

                np.y = p.y;

                p.width /= 2;

            }else{

                np.x = p.x;

                np.y = p.y+p.height/2;

                p.height /= 2;

            }

            np.width = p.width;

            np.height = p.height;

            if(Math.random() < 0.5){

                _objArray.push(np);

                sliceObject(p);

            }else{

                _objArray.push(p);

                sliceObject(np);

            }

        }

        

        private function enterframeHandler(e:Event):void

        {

            update();

        }

        

        private function onClick(e:MouseEvent):void

        {

            flg = !flg;

            init();

        }

        

        //フレーム処理：描画

        private function update():void {

            /*if(flg)*/time++;

            _canvas.lock();

            _canvas.fillRect(new Rectangle(0, 0, 700, 700), 0xFFFFFF);

            var sh:Shape = new Shape();

            sh.graphics.beginFill(0x000000);

            for each(var p:Particle in _objArray){

                if(p.sc == 0) continue;

                sh.graphics.drawRect(p.x+((1-p.sc)*(p.width/2)),p.y+((1-p.sc)*(p.height/2)),p.width*p.sc,p.height*p.sc);

                sh.x = p.x;

                sh.y = p.y;

                if(p.delay < time) p.sc /= 1.05;

                if(p.sc < 0.05) p.sc = 0;

            }

            sh.graphics.endFill();

            _canvas.draw(sh);

            sh = null;

            _canvas.unlock();

        }

    }

}



class Particle

{

    public var x:Number;

    public var y:Number;

    public var width:Number;

    public var height:Number;

    

    public var sc:Number;

    public var delay:Number;

    

    public function Particle()

    {

        sc = 1;

        delay = 0;

    }

}