public void RemoveCreatablesFromScene()
        {
            CreatableMap.Enumerator iter = creatables.GetEnumerator();

            while (iter.MoveNext())
            {
                RemoveCreatableFromScene(iter.Current.Value);
            }
        }
        public void AddCreatablesToScene()
        {
            CreatableMap.Enumerator iter = creatables.GetEnumerator();

            while (iter.MoveNext())
            {
                AddCreatableToScene(iter.Current.Value);
            }
        }