void OnClickLod0(Vector2 screenPos)
    {
        Ray ray = MapCamera.ScreenPointToRay(screenPos);

        RaycastHit[] hits = Physics.RaycastAll(ray);
        // map space
        Coord c = Layout.ScreenPos2Coord(MapCamera, screenPos);

        DoClickOnTile(c);
    }
    void OnClickLod1(Vector2 screenPos)
    {
        Coord coord = Layout.ScreenPos2Coord(MapCamera, screenPos);

        Ray ray = MapCamera.ScreenPointToRay(screenPos);

        RaycastHit[] hits = Physics.RaycastAll(ray);
        // MyCityFlag
        foreach (RaycastHit hit in hits)
        {
            if (hit.collider.gameObject == Lod1.MyCityFlag)
            {
                coord = GameFacade.GetProxy <CityProxy>().myCityCoord;
                break;
            }
        }

        coord.x = Mathf.Clamp(coord.x, 0, MapConst.MAP_WIDTH);
        coord.y = Mathf.Clamp(coord.y, 0, MapConst.MAP_HEIGHT);
        Vector3 wp = GetCameraPosWhenLookAt(coord, MapView.CameraHeightInit);

        StartCoroutine(Lod1to0(wp));
    }