[Onisim]

When I try to put an Arrow Anchor as EndLineCap for a LineArcVisual3D, doesn't show the arrow.
In this example doesn't work any other type of arrow anchor.  
Ab3d.Visuals.LineArcVisual3D supportArc = new LineArcVisual3D();
                            supportArc.CircleCenterPosition = new Point3D(0,0,0);
                            supportArc.CircleNormal = new System.Windows.Media.Media3D.Vector3D(0, 1, 1);
                            supportArc.Radius = 2.5;
                            supportArc.ZeroAngleDirection = new System.Windows.Media.Media3D.Vector3D(1, 0, 0);
                            supportArc.StartAngle = 300;
                            supportArc.EndAngle = 30;
                            supportArc.EndLineCap = Ab3d.Common.Models.LineCap.ArrowAnchor;
                            supportArc.LineThickness = 2;
                            supportArc.LineColor = supportsColor;