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1. • CommentAuthorjack1505
   • CommentTimeApr 18th 2011

    
   Hi,
   I am learning to develop a 3d program with away3d and flint. Can I create custom particles based on the primitives (for example, a polygon)? I got the error message that away3d.primitives::RegularPolygon@3b5f971 can not be converted to flash.display.DisplayObject.
   The codes are as follows:
   
   var particles:Vector.<Particle> = new Vector.<Particle>();
   var rp:RegularPolygon;
   var p:Particle3D;
   ...
   p=new Particle3D();
   p.position= new Vector3D(rp.x,rp.y,rp.z,1);
   p.image = rp;
   particles.push(p);
   
   Some codes will be helpful.
   Thanks.
   Jacky
2. • CommentAuthorRichard
   • CommentTimeApr 20th 2011 edited

    
   Which renderer are you using? You need to use the Away3DRenderer to render particles as away 3d objects.
   
   A couple of the examples on this site have Away3D versions (Fire and Smoke and Brownian Motion) which you may find useful.
3. • CommentAuthorjack1505
   • CommentTimeApr 25th 2011

    
   Thanks a lot.
4. • CommentAuthorjack1505
   • CommentTimeMay 3rd 2011

    
   When the renderer is Away3DRenderer, the flint particle system does work with addInitializer and addAction functions (the particles are initialized by addInitializer, for example, addInitializer( new A3DDisplayObjectClass( Dot, 2 ) ) ). But it does not work when I use an away3d primitive (a sphere) as a particle. I want to set different attributes of the particles. I don't know where is the problem. The program is as follows:
   
   renderer = new Away3DRenderer( scene );
   ......
   
   var ExplosionEmitter:Emitter3D = new Emitter3D();
   
   var particles:Vector.<Particle> = createSphereParticles();
   ExplosionEmitter.addParticles( particles, false );
   
   ExplosionEmitter.addInitializer( new Velocity( new SphereZone( new Vector3D(), 200 ) ) );
   ExplosionEmitter.addInitializer( new Lifetime( 3 ) );
   
   ExplosionEmitter.addAction( new Age( Quadratic.easeIn ) );
   ExplosionEmitter.addAction( new Move() );
   ExplosionEmitter.addAction( new Accelerate( new Vector3D( 0, -50, 0 ) ) );
   
   renderer.addEmitter( ExplosionEmitter );
   ExplosionEmitter.start();
   
   public function createSphereParticles():Vector.<Particle>
   {
   var particles:Vector.<Particle> = new Vector.<Particle>();
   var p:Particle3D;
   var i:int;
   var sphere:Sphere;
   
   for(i=0;i<100;i++)
   {
   p=new Particle3D();
   p.position= new Vector3D(0,50,0 ,0);
   
   sphere = new Sphere();
   sphere.radius = 6;
   sphere.segmentsW = 3;
   sphere.segmentsH = 2;
   
   p.image = sphere;
   particles.push(p);
   
   }
   return particles;
   }
5. • CommentAuthorRichard
   • CommentTimeMay 9th 2011

    
   I think this is what you're trying to do.
   
   package
{
import away3d.containers.View3D;
import away3d.primitives.Sphere;

import org.flintparticles.common.actions.Age;
import org.flintparticles.common.counters.Blast;
import org.flintparticles.common.easing.Quadratic;
import org.flintparticles.common.initializers.Lifetime;
import org.flintparticles.threeD.actions.Accelerate;
import org.flintparticles.threeD.actions.Move;
import org.flintparticles.threeD.away3d.Away3DRenderer;
import org.flintparticles.threeD.away3d.initializers.A3DObjectClass;
import org.flintparticles.threeD.emitters.Emitter3D;
import org.flintparticles.threeD.initializers.Position;
import org.flintparticles.threeD.initializers.Velocity;
import org.flintparticles.threeD.zones.PointZone;
import org.flintparticles.threeD.zones.SphereZone;

import flash.display.Sprite;
import flash.events.Event;
import flash.geom.Vector3D;

[SWF(width='400', height='400', frameRate='60', backgroundColor='#808080')]

public class Main extends Sprite
{
private var emitter : Emitter3D;
private var view : View3D;
private var renderer : Away3DRenderer;

public function Main()
{
emitter = new Emitter3D();
emitter.counter = new Blast( 100 );

emitter.addInitializer( new A3DObjectClass( Sphere, { radius:6, segmentsW:3, segmentsH:2 } ) );
emitter.addInitializer( new Position( new PointZone( new Vector3D( 0, 50, 0 ) ) ) );
emitter.addInitializer( new Velocity( new SphereZone( new Vector3D(), 200 ) ) );
emitter.addInitializer( new Lifetime( 3 ) );

emitter.addAction( new Age( Quadratic.easeIn ) );
emitter.addAction( new Move() );
emitter.addAction( new Accelerate( new Vector3D( 0, -50, 0 ) ) );

view = new View3D( { x:200, y:200 } );
addChild( view );
renderer = new Away3DRenderer( view.scene );
renderer.addEmitter( emitter );

emitter.start();

addEventListener( Event.ENTER_FRAME, render, false, 0, true );
}

private function render( ev : Event ) : void
{
// render the view
view.render();
}
}
}