protected override void OnDestroy()
        {
            base.OnDestroy();

            ProCamera2D.RemovePreMover(this);
            ProCamera2D.RemoveSizeDeltaChanger(this);
        }
        protected override void OnDestroy()
        {
            base.OnDestroy();

            if (ProCamera2D)
            {
                ProCamera2D.RemovePreMover(this);
            }
        }