[away3d] Particles clipping bug in away3dlite

[ConteZero]

I think there is a bug in particles clipping with away3dlite (lite
branch found in svn), particles behind the camera are not clipped
correctly.
I've changed ExParticlesPosition.as to show the problem

package
{
        import away3dlite.containers.Particles;
        import away3dlite.core.base.Particle;
        import away3dlite.materials.*;
        import away3dlite.primitives.*;
        import away3dlite.templates.*;

        import flash.display.*;
        import flash.events.*;
        import flash.filters.BlurFilter;
        import flash.geom.Matrix;

        [SWF(backgroundColor="#000000", frameRate="30", width="800",
height="600")]
        /**
         * Particles Example
         * @author katopz
         */
        public class ExParticlesPosition extends BasicTemplate
        {
                private var _particles:Particles;
                private var _particleMaterial:ParticleMaterial;

                private const radius:uint = 350;
                private const max:int = 1000;
                private const size:uint = 10;

                private const _totalFrames:uint = 30;

                override protected function onInit():void
                {
                        title = "Away3DLite | Particles : " + max + " | Click 
to toggle
Particles Draw mode (sprite/bitmap)";

                        // create materials
                        _particleMaterial = createParticleMaterial(size);

                        // create particles
                        _particles = new Particles();
                        scene.addChild(_particles);

                        // positions
/*                      _particles.addParticle(new 
Particle(_particleMaterial.clone(),
100, 0, 0));
                        _particles.addParticle(new 
Particle(_particleMaterial.clone(), 0,
100, 0));
                        _particles.addParticle(new 
Particle(_particleMaterial.clone(), 0,
0, 100));

                        _particles.addParticle(new 
Particle(_particleMaterial.clone(),
-100, 0, 0));
                        _particles.addParticle(new 
Particle(_particleMaterial.clone(), 0,
-100, 0));*/ // changed
                        _particles.addParticle(new 
Particle(_particleMaterial.clone(), 0,
0, -2500)); // changed

                        // center
                        scene.addChild(new Sphere(null, 100, 6, 6));

                        // toggle
                        stage.addEventListener(MouseEvent.CLICK, onClick);
                }

                private function
createParticleMaterial(radius:Number):ParticleMaterial
                {
                        var bitmapData:BitmapData = new BitmapData(radius * 2, 
radius * 2,
true, 0x00000000);
                        var _material:ParticleMaterial = new 
ParticleMaterial(bitmapData,
radius * 2, radius * 2);

                        var shape:Shape = new Shape();
                        shape.graphics.lineStyle();
                        shape.graphics.beginFill(0xFF00FF, 0.75);
                        shape.graphics.drawCircle(0, 0, radius);
                        shape.graphics.endFill();

                        bitmapData.draw(shape, new Matrix(1, 0, 0, 1, radius, 
radius));

                        return _material;
                }

                private function onClick(event:MouseEvent):void
                {
                        if (!_particles.bitmap)
                        {
                                _particles.bitmap = new Bitmap(new 
BitmapData(view.screenWidth,
view.screenHeight, true, 0x00000000));
                                addChild(_particles.bitmap);

                                // bitmap effect
                                _particles.bitmap.filters = [new BlurFilter(8, 
8)];
                                _particles.bitmap.blendMode = BlendMode.ADD;
                        }
                        else
                        {
                                removeChild(_particles.bitmap);
                                _particles.bitmap.bitmapData.dispose();
                                _particles.bitmap = null;
                        }
                }

                override protected function onPreRender():void
                {
//                      scene.rotationX += .5; // changed
                        scene.rotationY += .5;
//                      scene.rotationZ += .5; // changed
                }
        }
}