AudioSpectrum

※注意：音が出ます。マウスダウンでワイヤーフレーム消去。
* 参考：http://sakeprog.cocolog-nifty.com/sake/2008/05/post_a1d5.html

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favorite:31
lines:102
license : MIT License
modified : 2011-06-06 14:28:54

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/*
*   ※注意：音が出ます。マウスダウンでワイヤーフレーム消去。
*   参考：http://sakeprog.cocolog-nifty.com/sake/2008/05/post_a1d5.html
*/
package
{
    import flash.events.Event;
    import flash.media.Sound;
    import flash.media.SoundMixer;
    import flash.net.URLRequest;
    import flash.utils.ByteArray;
    import flash.system.*;
    import flash.events.MouseEvent;
    import flash.filters.BlurFilter;
    import org.papervision3d.core.geom.Pixels;
    import org.papervision3d.core.geom.renderables.Pixel3D;
    import org.papervision3d.view.BasicView;
    import org.papervision3d.view.layer.BitmapEffectLayer;
    import org.papervision3d.core.effects.BitmapLayerEffect;
    import org.papervision3d.core.effects.utils.BitmapClearMode;
    import org.papervision3d.core.effects.utils.BitmapDrawCommand;
    import org.papervision3d.objects.primitives.*;
    
    [SWF(width="465", height="465", backgroundColor="0x000000", frameRate="40")]
    public class Main extends BasicView
    {
        private var _bytes:ByteArray;
        private var _spectrum:Array;
        private var _mySpherePos:Sphere;
        private var _mySphere:Sphere;
        private var _myPixels:Pixels;
        private var _myPixelArray:Array;
        
        public function Main():void
        {
            var i:uint = 0;
            camera.z=-400;
            camera.y=0;
            
            _bytes=new ByteArray();
            _spectrum=new Array();
            _myPixelArray=new Array();
            
            var layer:BitmapEffectLayer=new BitmapEffectLayer(viewport, 465, 465, true, 0, BitmapClearMode.CLEAR_PRE, true);
            layer.addEffect(new BitmapLayerEffect(new BlurFilter(2, 2, 4), false));
            layer.drawCommand = new BitmapDrawCommand();  
            viewport.containerSprite.addLayer(layer);
            
            _myPixels=new Pixels(layer);
            _mySpherePos = new Sphere(null,150,16,16);
            _mySphere = new Sphere(null,150,16,16);
            
            _mySphere.x = 0;
            
            for each(var obj:* in _mySpherePos.geometry.vertices){
                _myPixelArray[i] = new Pixel3D( (0xff << 24 | 0xff << 16 | 0x33 << 8 | i ), obj.x, obj.y, obj.z);
                _myPixels.addPixel3D(_myPixelArray[i]);
                i++;
            }
            
            scene.addChild(_myPixels);
            scene.addChild(_mySphere);
            
            _myPixels.visible = true;
            _mySphere.visible = true;
            Security.loadPolicyFile("http://wakaz.info/pv3d_audio/crossdomain.xml");
            var sound:Sound=new Sound();
            sound.addEventListener(Event.COMPLETE, onComplete);
            sound.load(new URLRequest("http://www.spec5zigen.com/sound/song.mp3"));
        }
        
        private function onComplete(e:Event):void
        {
            (e.target as Sound).play();
            addEventListener(Event.ENTER_FRAME, makeSpectrum);
            addEventListener(MouseEvent.MOUSE_DOWN, _hide);
            addEventListener(MouseEvent.MOUSE_UP, _show);
            addEventListener(MouseEvent.MOUSE_MOVE, _move);
        }
        
        public function makeSpectrum(e:Event):void
        {
            var i:int;
            var mscale:Number = 1.4;
            
            SoundMixer.computeSpectrum(_bytes, true, 0);
            
            for(i=0; i < 256; ++i) _spectrum[i]=_bytes.readFloat();
            i = 0;
            for each(var obj:* in _mySpherePos.geometry.vertices){
              _mySphere.geometry.vertices[i].x=obj.x*(_spectrum[i]*mscale+1);
              _mySphere.geometry.vertices[i].y=obj.y*(_spectrum[i]*mscale+1);
              _mySphere.geometry.vertices[i].z=obj.z*(_spectrum[i]*mscale+1);
              _myPixelArray[i].x=obj.x*(_spectrum[i]*mscale+1);
              _myPixelArray[i].y=obj.y*(_spectrum[i]*mscale+1);
              _myPixelArray[i].z=obj.z*(_spectrum[i]*mscale+1);
              i++;
            }
            
            _mySphere.rotationX+=0.2;
            _mySphere.rotationY+=0.3;
            _myPixels.rotationX+=0.2;
            _myPixels.rotationY+=0.3;
            startRendering();
        }
        private function _move(e:MouseEvent = null):void
        {
            camera.x = (mouseX - 230) * 3;
            camera.y = (mouseY - 130) * 3;
        }
        private function _hide(e:MouseEvent = null):void
        {
             _mySphere.visible = false;
        }
        private function _show(e:MouseEvent = null):void
        {
             _mySphere.visible = true;
        }
    }
    
}

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