Hi,

1, 2) Unfortunately we haven't designed the AnchorPattern objects to be very dynamic. Better create an entirely new AnchorPattern instance with more or less points and assign it to node.AnchorPattern. Then reset the links' OriginAnchor and DestinationAnchor properties so link ends realign to the current anchor point positions:

// force link to update its start point from anchor point
int o = link.OriginAnchor;
link.OriginAnchor = -1;
link.OriginAnchor = o;
int d = link.DestinationAnchor;
....

3) Either use the Factory.CreateDiagramLink(node, anchor, node, anchor) overloaded method, or set the OriginAnchor and DestinationAnchor properties after creating a link.

4) Set the Stroke* and Text properties derived from DiagramItem.

I hope that helps,
Stoyan

Hi,

That seems to connect the correct anchor points in my test, with everything at default values. What property values are you using for diagram's link related properties, such as RouteLinks, DynamicLinks, RoutingOptions, etc?

Stoyan

Ok, I've managed to reproduce this with a different AnchorPattern. Apparently the link's OriginAnchor and DestinationAnchor are set to the index of the anchor point closest to the node's top middle point, while the loop shape set for self-loop links ignores the anchor position. Then the OriginAnchor or DestinationAnchor setter just returns if the property already has the same value, without changing the actual position of the link end point. So you can use the same work-around as the one for dynamically changing anchor point positions - reset the Origin/DestinationAnchor property values to -1 and back to the actual value:

var link = new DiagramLink(diagram);
link.Origin = node;
link.Destination = node;
link.OriginAnchor = -1;
link.DestinationAnchor = -1;
link.OriginAnchor = 0;
link.DestinationAnchor = 1;
diagram.Links.Add(link); 

If using a custom node class, you could also override the DiagramNode.SetReflexive method and directly set the link's CotnrolPoints to coordinates that correspond to the anchor positions.

I hope that helps,
Stoyan

You can do that by assigning new coordinates to link ControlPoints, for example you could do this if both anchor points are at the top of a node:

var p = link.ControlPoints;
p[1] = new Point(p[0].X, p[1].Y);
p[2] = new Point(p[3].X, p[2].Y);
link.UpdateFromPoints(); 

You will have to implement similar code for a lot of cases if the anchor points can be on different sides of the node.

I hope that helps,
Stoyan

Hey

I found some strange behaviour for the links...

I create my links, add these to Links collection of a diagram, and then start adjusting them.  (and later doing remove/add from the links to see the effect)
If I first set the destination and destinationanchor, and then the origin and originanchor, all works well.

If I set the Origin and OriginAnchor first, and then the destination ones, OriginAnchor field is getting botched!

The value in the OriginAnchor is getting changed. (i.E. was 2 before, after setting the Destination it becomes 1 suddenly).

I had to restructure my algorithm for that, so I collect all pending changes and then setting the origin, destination, etc all in one block for each link. Costs extra performance and extra memory however ;(