private void camera_position_Click(object sender, EventArgs e)
        {
            using (CameraPosition pos = new CameraPosition())
            {
                pos.ShowDialog();

                //if (pos.X != -999 && pos.Y != -999 && pos.Angle != -1)
                //{
                    GetCurrentCamera().X = pos.X;
                    GetCurrentCamera().Y = pos.Y;
                    GetCurrentCamera().Angle = pos.Angle;
                //}

                UpdateGroupBox(GetCurrentFocusIndex());
            }
        }