Convolution Rice Shower

by uwi 31 Oct 2010

Embed

/**
 * Copyright uwi ( http://wonderfl.net/user/uwi )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/6Kgj
 */

package {
    import flash.display.Sprite;
    import flash.text.TextField;
    import flash.display.*;
    import flash.events.*;
    import flash.geom.*;
    import flash.filters.*;

    public class Test extends Sprite {
        private var _tf : TextField;
        private var _bmd : BitmapData;

        public function Test() {
            _tf = new TextField();
            _tf.width = 465;
            _tf.height = 465;
//            addChild(_tf);
            
            graphics.beginFill(0x000066);
            graphics.drawRect(0, 0, 465, 465);
            graphics.endFill();

            _bmd = new BitmapData(465, 465, true, 0x00000000);
            addChild(new Bitmap(_bmd));
            addEventListener(Event.ENTER_FRAME, onEnterFrame);
            
//            _bmd.setPixel32(100, 100, 0xffffffff);
            _cf = new ConvolutionFilter(3, 7, [
                0, 0.3, 0,
                0.08, 0.3, 0.08,
                0.08, 0.2, 0.08,
                0, 0.1, 0,
                0, 0, 0,
                0, 0, 0,
                0, 0, 0
                ], 1.0, 0.0, false);
        }
        
        private var _cf : ConvolutionFilter;
        private var _step : Number = -99999;
        
        public function onEnterFrame(e : Event) : void
        {
            _bmd.lock();
            if(_step % 10 == 0){
                _bmd.setPixel32(Math.random() * 465, Math.random() * 30 + 5, 0xff000000 + Math.random() * 0xffffff);
            }
            _step++;

            _bmd.applyFilter(_bmd, _bmd.rect, new Point(), _cf);
            _bmd.unlock();
        }

        private function tr(...o : Array) : void
        {
            _tf.appendText(o + "\n");
        }
    }
}