use package

[peyvand]

hi , how to use this package ?!! :

package
{

import org.papervision3d.view.BasicView;

import flash.events.Event;

import org.papervision3d.events.InteractiveScene3DEvent;
import org.papervision3d.objects.DisplayObject3D;
import org.papervision3d.core.geom.Particles;
import org.papervision3d.core.geom.renderables.Particle;
import org.papervision3d.materials.special.MovieAssetPart icleMaterial;

/**
* @author Seb Lee-Delisle
*/
public class MovieAssetParticleTest extends BasicView
{
public var particleContainer:DisplayObject3D;
private var particles : Array;

public function MovieAssetParticleTest()
{
super(stage.stageWidth, stage.stageHeight, false, true);
init();


}

private function init():void
{

particleContainer = new DisplayObject3D("Particle Container");
particles = new Array();

for(var i:int = 0; i<400; i++)
{

var spm:MovieAssetParticleMaterial = new MovieAssetParticleMaterial("Sphere",true);
spm.interactive = true;
spm.smooth = true;

var particles3D:Particles = new Particles("ParticleContainer#"+i);
var p:Particle = new Particle(spm,2,600,0,0);

particles3D.addParticle(p);

particles3D.addEventListener(InteractiveScene3DEve nt.OBJECT_OVER, particleOver);

particles3D.rotationY = Math.random()*360;
particles3D.rotationZ = Math.random()*180;


particles3D.extra = {spin: 0};

particleContainer.addChild(particles3D);
particles.push(particles3D);

}

scene.addChild(particleContainer);

singleRender();

addEventListener(Event.ENTER_FRAME, frameLoop);
}




private function particleOver(e : InteractiveScene3DEvent) : void
{
e.displayObject3D.extra["spin"] = 10;

}

function frameLoop(e:Event): void
{

particleContainer.rotationY+=((stage.stageWidth/2)-mouseX)/200;
particleContainer.rotationX+=((stage.stageHeight/2)-mouseY)/200;
var drag:Number = 0.99;

for(var i:int=0; i<particles .length; i++)
{
var p:Particles = particles[i];
var spin:Number = p.extra["spin"];

if(spin>0.1)
{
p.extra["spin"]*=drag;
p.rotationY+=spin;

}
else
{
p.extra["spin"] = 0;
}


}


singleRender();


}

[wvxvw]

First:
http://wiki.papervision3d.org/index.php?title=Getting_Started_FAQ
This is the Papervision3D basics.

To use the class you show you have to var myvar:MovieAssetParticleTest = new MovieAssetParticleTest (); (the .AS file containing this class has to be in the same directory, where you .FLA is, or in some directory from the classpathes list.