Java3D - Rotacionando Objetos

Programação Java
#1

Eu consigo fazer uma transformação num objeto normal(rotação, escala, translação) e tal, mas a minha duvida é a seguinte: como resgatar os novos valores do vértice do meu objeto(Shape3D) após aplicada uma transformação? vou colocar o meu codigo abaixo para deixar mais claro oq eu quero.

Classe principal:

public class Teste extends JApplet {

public Teste() {
this.getContentPane().setLayout(new BorderLayout());
GraphicsConfiguration config =
SimpleUniverse.getPreferredConfiguration();

    Canvas3D canvas3D = new Canvas3D(config);
    this.getContentPane().add("Center", canvas3D);


    TexturedPlane p1 = new TexturedPlane();
    TexturedPlane p2 = new TexturedPlane();
    
    BranchGroup bg = new BranchGroup();
    bg.addChild(p1);
    
    Transform3D rotate = new Transform3D();
    rotate.rotY(Math.toRadians(120));
    
    Transform3D translate = new Transform3D();
    translate.setTranslation(new Vector3f(1,0f,0f));
    
    Transform3D translateCima = new Transform3D();
    translateCima.setTranslation(new Vector3f(1f,0f,0f));
    
    translate.mul(translateCima);
    translate.mul(rotate);
    
    TransformGroup objRotate = new TransformGroup(translate);
    objRotate.addChild(p2);
    
    bg.addChild(objRotate);

    QuadArray g = (QuadArray)p2.getGeometry();
    
    Point3f pp = new Point3f();
    
    
    g.getCoordinate(3, pp);
    
    //imprime o vertice 3 do Shape3D (nao alterado)
    System.out.println(pp);

    bg.compile();

    SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
    simpleU.getViewingPlatform().setNominalViewingTransform();

}
}

Objeto TexturedPlane(peguei no tutorial da sun)

public class TexturedPlane extends Shape3D {
TexturedPlane(String filename) {
if (NewTextureLoader.getImageObserver() == null)
System.out.println(“call NewTextureLoader.setImageObserver()”);
this.setGeometry(createGeometry());
if(filename != “”)
this.setAppearance(createAppearance(filename));
}

Geometry createGeometry(){

    QuadArray plane = new QuadArray(4, GeometryArray.COORDINATES
                                       | GeometryArray.TEXTURE_COORDINATE_2
						);

    Point3f p = new Point3f(-1.0f,  1.0f,  0.0f);
    plane.setCoordinate(0, p);
    p.set(-1.0f, -1.0f,  0.0f);
    plane.setCoordinate(1, p);
    p.set(1.0f, -1.0f,  0.0f);
    plane.setCoordinate(2, p);
    p.set(1.0f,  1.0f,  0.0f);
    plane.setCoordinate(3, p);

    Point2f q = new Point2f( 0.0f,  1.0f);
    plane.setTextureCoordinate(0, q);
    q.set(0.0f, 0.0f);
    plane.setTextureCoordinate(1, q);
    q.set(1.0f, 0.0f);
    plane.setTextureCoordinate(2, q);
    q.set(1.0f, 1.0f);
    plane.setTextureCoordinate(3, q);

    return plane;
}

Appearance createAppearance(String filename) {

    Appearance appear = new Appearance();

    System.out.println("TexturedPlane attempt to load file: "+filename);
    TextureLoader loader = new NewTextureLoader(filename);
    ImageComponent2D image = loader.getImage();

    if(image == null) {
            System.out.println("load failed for texture: "+filename);
    }

    System.out.println("Image width  = " + image.getWidth());
    System.out.println("Image height = " + image.getHeight());
    
    // can't use parameterless constuctor
    Texture2D texture = new Texture2D(Texture.BASE_LEVEL, Texture.RGBA,
                                      image.getWidth(), image.getHeight());
    texture.setImage(0, image);
    texture.setEnable(true);
    texture.setMagFilter(Texture.NICEST);

    appear.setTexture(texture);

    appear.setTransparencyAttributes(
       new TransparencyAttributes(TransparencyAttributes.FASTEST, 0.1f));

    return appear;
}

}

#2