Hi Stoyo

To achive one end of link dynamic and another end fixed ( using the OnValidateAnchorPoint event provided in internal build) I need to place invisible anchor point for shapes.

These anchor points needs to be displayed according to the shape and I am using PathGeometry segments to add proper anchor points on shape. The algorithm works properly for all of the segments of the shape except "RoundRect" shape.

For shape with "RoundRect" the anchor points are not added at its proper position. The algorithm works properly when the bounds of shape is (0,0,100,100) but fails for all other bounds.

I am re-assigning anchor points when nodes are resized (depending on the dimension and scale factor the anchor points gets assinged)

so, just wanted to know is there any specific algorithm applied to the RoundRect shape which changes its dimention?

Can you help me to generate correct anchor points.

Following is the result of assinging anchor for roundrect shape -
http://4nic6g.bay.livefilestore.com/y1pvwuYO5-gvdUWySzQIdk323zt8b4xWKZ7JZ9MrOnmu...

Regards
Rajesh

Hi Stoyo

Yes, we are using ShapeGeometry to get all the segments. Here is the code for the same

 foreach (PathFigure figure in node.ShapeGeometry as PathGeometry).Figures)
                {
                    try
                    {
                        Point startPoint = figure.StartPoint;
                        Point endPoint = figure.StartPoint;
                        foreach (PathSegment segment in figure.Segments)
                        {
                            switch (segment.GetType().Name)
                            {
                                case "LineSegment":
                                    endPoint = (segment as LineSegment).Point;
                                    AddLineAnchorPoints(startPoint, endPoint, factor, anchors); //Process for Line Segments
                                    break;
                                case "ArcSegment":
                                    endPoint = (segment as ArcSegment).Point;
                                    AddArcAnchorPoints(startPoint, endPoint, (segment as ArcSegment), factor, anchors); //Process for Arc Segments
                                    break;
                                case "PolyLineSegment":
                                    foreach (Point point in (segment as PolyLineSegment).Points)
                                    {
                                        endPoint = point;
                                        AddLineAnchorPoints(startPoint, endPoint, factor, anchors); //Process for Line Segments
                                        startPoint = endPoint;
                                    }
                                    break;
                                case "BezierSegment":
                                    endPoint = (segment as BezierSegment).Point3;
                                    var controlPoint1 = (segment as BezierSegment).Point1;
                                    var controlPoint2 = (segment as BezierSegment).Point2;
                                    AddBezierAnchorPoints(startPoint, endPoint, controlPoint1, controlPoint2, factor, anchors); //Process for Bezier Segment
                                    break;
                                default:
                                    break;
                            }
                            startPoint = endPoint;
                        }
                    }
                    catch (Exception) { }
                }
 

Hi Stoyo

Even I believe that the ShapeGeometry should not give improper points. the Shape Geometry is providing proper data for all other shapes except Roundrect.

Please find the attached sample code which calculates the anchor points for various shape nodes. The code might provide you more insight about the requirement.

https://cid-2b9bf77533900b84.office.live.com/self.aspx/.Public/Anchors.zip


The factor is the distance between two anchor points on a shape.

Regards,
Rajesh