protected void InvalidateLink(Link link, bool realTime) { if (link == null) { return; } var region = BezierHelper.GetBezierUpdateRegionWidthHandles( View.PointToReal(link.LayoutData.StartPoint), View.PointToReal(link.LayoutData.ControlPoint1), View.PointToReal(link.LayoutData.ControlPoint2), View.PointToReal(link.LayoutData.EndPoint), link.Width); if (region != null) { InvalidateChart(region, realTime); } }