public static ObjectAnchor Create(Subject2 owner, LayerRect rect, int cullingLayer)
{
ObjectAnchor ret = new GameObject(owner.GetType().Name).AddComponent<ObjectAnchor>();
ret.gameObject.layer = cullingLayer;
ret.SetForcingly("owner", owner);
ret.SetForcingly("centerRect", rect.ObjectRectInLayer);
ret.transform.parent = rect.point.layer.transform;
ret.transform.localPosition = new Vector3(ret.centerRect.x, ret.centerRect.y, 0);
return ret;
}