Using Diagraming.Wpf version 3.5.0.451.

When trying to connect a Symbol whose width is more or equal to twice its height the DiagramLink::Route() method returns false and doesn't fire any event.
When rotating the symbol 90°, the routing then succeeds without any issue.

What could be causing this / is this a known issue?

Hi Slavcho,

Thanks for the answer. I have tried with version 3.5.1.451 and the problem is still there. I don't know where to find version 3.5.2.

Best,
Robin

Hi,

I am now using version 3.5.2.
When trying to Route from a rectangle symbol (see attachment 1) the method DiagramLink::Route() returns false and doesn't fire any event. If I rotate the symbol 90° then the Route works flawlessly. I have noticed trough trial and errors that the Routing fails only when trying to Route from a symbol which is more than 2 time wider than its height. In this use case the width of the symbol is 128, the height is 64 and the grid size is 16.

Robin

Is that rectangle pointed by the link a separate node (placed over the larger symbol node)?

The router marks the grid tiles covering whole bounding area of node as obstacles, not just the ones where you see node's pixels. E.g. the grid built from diagram would look as upper part of the attached image, not the lower one. So it might not be finding free tiles to pass the link through because of the larger overlapped node and returns false. We cannot do pixel-by-pixel analysis of custom shapes to build a more fine-grained grid than that, but could add some method to let you return a list of rectangles if that will work for you.

It working when the large node is rotated might be coincidence, say if the smaller node happens to intersect four grid tiles in one case and just one in the other, depending on where the grid tiling starts.

Regards,
Slavcho