@Override
    public void update(float tpf) {
        if (!enabled) {
            return;
        }
        setPhysicsLocation(getSpatialTranslation());
        setPhysicsRotation(getSpatialRotation());
    }
Update this control. Invoked once per frame during the logical-state
update, provided the control is added to a scene. Do not invoke directly
from user code.

@param tpf the time interval between frames (in seconds, &ge;0)
jme3-jbullet/src/main/java/com/jme3/bullet/control/GhostControl.java