Random Grid

コードは汚いので見ないでほしい・・・

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favorite:10
lines:118
license : MIT License
modified : 2011-04-25 15:52:35

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package
{
    import flash.display.Bitmap;
    import flash.display.BitmapData;
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.geom.Point;
    import flash.geom.Rectangle;
    import flash.utils.Dictionary;
    
    [SWF(width = "465", height = "465", backgroundColor = "0xFFFFFF", frameRate = "60")]
    
    public class Main extends Sprite
    {
        private const MAX_NUM:int = 15;
        private const LIMIT_SIZE:Number = 30;
        
        private var _canvas:BitmapData;
        private var _points:Vector.<Point> = Vector.<Point>([]);
        private var _dict:Dictionary = new Dictionary(true);
        
        public function Main()
        {
            setup();
        }
        
        private function setup():void
        {
            _canvas = new BitmapData(stage.stageWidth, stage.stageHeight, false, 0xFFFFFF);
            addChild(new Bitmap(_canvas));
            
            addPoint(0xAA0000, stage.stageWidth * (Math.random() * .4 + .3), stage.stageHeight * (Math.random() * .4 + .1), 2, 2);
            addEventListener(Event.ENTER_FRAME, update);
        }
        
        private function addPoint(cl:int, px:Number, py:Number, d:int, c:int):void
        {
            var p:Point = new Point(px, py);
            var color:int = cl >> 8;
            if(color < 0xAA) color = 0xAA0000
            _dict[p] = {col:color, startX:p.x, startY:p.y, dir:d, change:c};
            
            _points.push(p);
        }
        
        private function update(e:Event):void
        {
            drawLine();
        }
        
        private function drawLine():void
        {
            var n:int = _points.length;
            if(n == 0){
                removeEventListener(Event.ENTER_FRAME, update);
                return;
            }
            _canvas.lock();
            while(n--){
                var p:Point = _points[n];
                if(_dict[p].dir == 2){
                    if(_dict[p].change == 2){
                        p.y +=3;
                    }else{
                        p.y -=3;
                    }
                }else{
                    if(_dict[p].change == 2){
                        p.x +=3;
                    }else{
                        p.x -=3;
                    }
                }
                //
                var x1:Number = 0;
                var x2:Number = 0;
                var y1:Number = 0;
                var y2:Number = 0;
                
                var cl:int = _dict[p].col;
                
                if(_dict[p].dir == 1){
                    if(p.y < 0 || p.y > stage.stageHeight || 
                       _canvas.getPixel(p.x, p.y) != 0xFFFFFF || 
                       _canvas.getPixel(p.x + 1, p.y + 1) != 0xFFFFFF ||
                       _canvas.getPixel(p.x - 1, p.y - 1) != 0xFFFFFF
                    ){
                        if(_dict[p].change == 2){
                            x1 = (p.x - _dict[p].startX) * (Math.random() * .8 + .1) + _dict[p].startX;
                            x2 = (p.x - _dict[p].startX) * (Math.random() * .8 + .1) + _dict[p].startX;
                        }else{
                            x1 = (_dict[p].startX - p.x) * (Math.random() * .8 + .1) + p.x;
                            x2 = (_dict[p].startX - p.x) * (Math.random() * .8 + .1) + p.x;
                        }
                        if(_points.length < MAX_NUM && Math.abs(_dict[p].startX - p.x) > LIMIT_SIZE){
                            addPoint(cl, x1, p.y, 2, 1);
                            addPoint(cl, x2, p.y, 2, 2);
                        }
                        _points.splice(n, 1);
                        return;
                    }else{
                        _canvas.fillRect(new Rectangle(p.x, p.y, 2, 1), _dict[p].col);
                    }
                }else{
                    if(p.x < 0 || p.x > stage.stageWidth ||
                       _canvas.getPixel(p.x, p.y) != 0xFFFFFF || 
                       _canvas.getPixel(p.x + 1, p.y + 1) != 0xFFFFFF ||
                       _canvas.getPixel(p.x - 1, p.y - 1) != 0xFFFFFF
                       ){
                        if(_dict[p].change == 2){
                            y1 = (p.y - _dict[p].startY) * (Math.random() * .8 + .1) + _dict[p].startY;
                            y2 = (p.y - _dict[p].startY) * (Math.random() * .8 + .1) + _dict[p].startY;
                        }else{
                            y1 = (_dict[p].startY - p.y) * (Math.random() * .8 + .1) + p.y;
                            y2 = (_dict[p].startY - p.y) * (Math.random() * .8 + .1) + p.y;
                        }
                        if(_points.length < MAX_NUM && Math.abs(_dict[p].startY - p.y) > LIMIT_SIZE){
                            addPoint(cl, p.x, y1, 1, 1);
                            addPoint(cl, p.x, y2, 1, 2);
                        }
                        _points.splice(n, 1);
                        return;
                    }else{
                        _canvas.fillRect(new Rectangle(p.x, p.y, 1, 2), _dict[p].col);
                    }
                }
            }
            _canvas.unlock();
        }
    }
}

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