public override void Draw(Graphics canvas, DistortionHelper distorter, IImageToViewportTransformer transformer, bool selected, long currentTimestamp) { if (!Visible || CalibrationHelper == null) { return; } if (CalibrationHelper.CalibratorType == CalibratorType.Plane && !CalibrationHelper.CalibrationByPlane_IsValid()) { return; } CoordinateSystemGrid grid = CalibrationHelper.GetCoordinateSystemGrid(); using (Pen penLine = styleHelper.GetBackgroundPen(255)) { DrawGrid(canvas, distorter, transformer, grid); } }