Why can't i position this object??

Question

Hi All.
I'm having aslight problem. I'm trying to create a sphere and position it somewhere in my scene but everytime i run the code it automatically positions it back at (0,0,0).
Anyone got any ideas.
The code's below.
Thanks a lot.
Java_chic.
java.net.URL image_url = applet.getImageUrl( "Java3d.jpg" );
TransformGroup tg1 = new TransformGroup( );
tg1.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
Appearance app = new Appearance( );
Transform3D transform = new Transform3D();
Sphere sphere = new Sphere( 0.4f, Sphere.GENERATE_TEXTURE_COORDS, app);
Vector3f vector = new Vector3f(x,y,z );
Texture tex1 = new TextureLoader( image_url, applet ).getTexture();
app.setTexture( tex1 );
TextureAttributes texAttr = new TextureAttributes();
texAttr.setTextureMode( TextureAttributes.REPLACE );
app.setTextureAttributes( texAttr );
sphere.setAppearance(app);
transform.setTranslation(vector);
tg1.setTransform(transform);
tg1.addChild( sphere );
Transform3D yAxis = new Transform3D();
Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE,
                         0, 0,
                         4000, 0, 0,
                         0, 0, 0);
RotationInterpolator rotator =
     new RotationInterpolator(rotationAlpha, tg1, yAxis,
                    0.0f, (float) Math.PI*2.0f);
BoundingSphere bounds =
     new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
rotator.setSchedulingBounds(bounds);
tg1.addChild(rotator);
bg.addChild( tg1 );
/////////////////////////////////////////

Answer 1

Sharon,
you can try out the following code, it should work.
Regards,
Oliver
java.net.URL      image_url     = applet.getImageUrl( "Java3d.jpg" );
TransformGroup    tg1           = new TransformGroup( );
TransformGroup    tg2           = new TransformGroup( );
Appearance        app           = new Appearance( );
Transform3D       transform     = new Transform3D();
Sphere            sphere        = new Sphere( 0.4f, Sphere.GENERATE_TEXTURE_COORDS, app);
Vector3f          vector        = new Vector3f(x,y,z );
Texture           tex1          = new TextureLoader( image_url, applet ).getTexture();
TextureAttributes texAttr       = new TextureAttributes();
Transform3D       yAxis         = new Transform3D();
Alpha             rotationAlpha = new Alpha( -1, Alpha.INCREASING_ENABLE,
                                             0, 0,
                                             4000, 0, 0,
                                             0, 0, 0);
RotationInterpolator rotator    = new RotationInterpolator( rotationAlpha,
                                                            tg1, yAxis,
                                                            0.0f,
                                                            (float) Math.PI*2.0f);
rotator.setSchedulingBounds( new BoundingSphere (new Point3d(0.0,0.0,0.0), 100.0) );
texAttr.setTextureMode( TextureAttributes.REPLACE );
app.setTexture( tex1 );
app.setTextureAttributes( texAttr );
tg1.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
sphere.setAppearance(app);
// Look here:
transform.setTranslation(vector);
tg2.setTransform(transform);
tg2.addChild( tg1 );
tg1.addChild( sphere );
tg1.addChild(rotator);
bg.addChild( tg2 );
/////////////////////////////////////////