public Quaternion getFinalObserverRotation() {
        if( viewManager == null ) {
            if( observer == null ) {
                return getCamera().getRotation();
            } else return observer.getWorldRotation();
        }
        if( observer == null ) {
            tempq.set(dummyCam.getRotation());
        } else {
            tempq.set(observer.getWorldRotation());
        }
        return tempq.multLocal(vrHardware.getOrientation());
    }
Get the observer final rotation within the scene.
@return the observer final rotation within the scene.
@see #getFinalObserverPosition()
jme3-vr/src/main/java/com/jme3/app/VRApplication.java