Hi all together,
I want to build an HUD containing AxisRods that are always direct into the x-direction of the world independent of the camera direction or orientations (like a compass). So a rotation method for Object in a HUD. This also can used as an map for strategy games.
here is my code, after a lot of readings and tries I think I don't know what i do 
public class HUDInterface {
public static final String HUDName = "HeadsUpDisplay";
private final Node MyHUDRoot;
private final D3Implementor MyImplementor;
private final Spatial MyAxis;
private final Vector3f axis = new Vector3f(1, 1, 10);
private Quaternion rotQuat = new Quaternion();
public HUDInterface(final D3Implementor Implementor) {
MyImplementor = Implementor;
MyHUDRoot = new Node(HUDName);
MyAxis = new AxisRods("CoordinateAxis", true, 50f);
MyAxis.setRenderQueueMode(Renderer.QUEUE_ORTHO);
MyAxis.setLocalTranslation(new Vector3f(MyImplementor.DisplaySystem().getWidth() / 2, MyImplementor.DisplaySystem().getHeight() / 2, 0));
MyHUDRoot.attachChild(MyAxis);
MyImplementor.getRootNode().attachChild(MyHUDRoot);
}
public Node HUDRoot() {
return MyHUDRoot;
}
public void Update() {
// if (MyImplementor.getTimePerFrame() < 1) {
// angle = angle + MyImplementor.getTimePerFrame();
// }
rotQuat = MyImplementor.getRootNode().getWorldRotation();
// angle=MyImplementor.getRootNode().getWorldRotation()
// rotQuat.fromAngleAxis(0, MyImplementor.getCamera().getDirection());
MyAxis.setLocalRotation(rotQuat);
MyAxis.updateRenderState();
}
}
I think the problem is the rotation in the Update() method.
(Btw. variables and methods has to begin with an upper case letter in our project, I don't like it but may you now it: Historical Grown :D . no further comments.)