*/
public synchronized void userMovePlanarUpdate (Vector2f dragVector) {
// Calculate the delta of the movement since the last update
Vector2f deltaDragVector = dragVector.clone();
deltaDragVector.subtractLocal(userMovePlanarDragVectorPrev);
userMovePlanarDragVectorPrev = dragVector;
applyDeltaTranslationUser(new Vector3f(deltaDragVector.x, deltaDragVector.y, 0f), true);
}