[FF]: 簡単な集中線

by bradsedito 26 Jun 2011

• Forked from mousepancyo's 簡単な集中線
• Diff: 12
• Related works: 2
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/**
 * Copyright bradsedito ( http://wonderfl.net/user/bradsedito )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/4SlA
 */

// forked from mousepancyo's 簡単な集中線
package 
{
    import flash.display.Bitmap;
    import flash.display.BitmapData;
    import flash.display.Graphics;
    import flash.display.Sprite;
    import flash.display.Shape;
    import flash.events.Event;
    import flash.geom.Matrix;
    import flash.geom.ColorTransform;
    import flash.filters.BlurFilter;
    import flash.filters.GlowFilter;
    
    [SWF(width = "465",height = "465",frameRate = "60",backgroundColor = "0")]

    public class Main extends Sprite
    {
        private var _canvas:BitmapData;  private var _bm:Bitmap;
        private var blurr:BlurFilter = new BlurFilter(10,10,2);
        private var gloww:GlowFilter = new GlowFilter(0xffffffff,1 ,2,2, 4,2,false);
        private var _ctf:ColorTransform = new ColorTransform(.94, .93, .9);
        public function Main()
        {
            _canvas = new BitmapData(stage.stageWidth, stage.stageHeight, false, 0);
            _bm = new Bitmap(_canvas);  addChild(_bm);
            addEventListener(Event.ENTER_FRAME, update);
        }
        
        private function update(e:Event):void
        {
            var line:Shape = new Shape();  var g:Graphics = line.graphics;  var pitch:int = 120;  var len:int = stage.width / 2 * Math.sqrt(4);  var r:int = 360;
            g.beginFill(0xFFFFFF*Math.random());  g.moveTo(-1.5, 0);  g.lineTo(1.5, 0);  g.lineTo(0, -1.5);  g.lineTo(-1.5, 0);
            _canvas.lock();  _canvas.colorTransform(_canvas.rect, _ctf);
            
            this.filters = [blurr];
            _bm.blendMode = "add"; 
//          _canvas.scroll(0,0);
//          _canvas.scroll(0,0);
            
            while (0 < r)
            {
                var x:Number = Math.sin(r * Math.PI / 180) * len + stage.stageWidth / 2;  var y:Number = Math.cos(r * Math.PI / 180) * len + stage.stageHeight / 2;
                var mtx:Matrix = new Matrix();  mtx.scale(6, Math.random() * len + len / 2);  mtx.rotate((-r) * Math.PI / 180);  mtx.translate(x, y);
                _canvas.draw(line, mtx);
                r -=  Math.round(Math.random() * pitch);
            }
            _canvas.unlock();
        }
    }
}