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eclipse / elk

Eclipse Layout Kernel - Automatic layout for Java applications.
https://www.eclipse.org/elk/
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`elk.mrtree` edges behave weird with identical labels in different child nodes #1072

Open YorikHansen opened 2 months ago

YorikHansen commented 2 months ago

Describe the bug When child nodes have identical labels, the edges are not properly layouted. This includes:

  1. edges starting from the east side of the node even though they should start on the south,
  2. outgoing edges not being justified properly and
  3. incoming edges that enter a node in an unexpected angle.

See an example

Expected behavior The tree is drawn in the same way it would be if the labels weren't identical or not existing at all.

Screenshots grafik

ELK Version 0.9.1 (and all other versions) and the current snapshot.

Additional context Add any other context about the problem here.

soerendomroes commented 2 months ago

It seems to depend on the actual labels in there. Interestingly this works.

soerendomroes commented 2 months ago

Here is a smaller example.

YorikHansen commented 1 month ago

It seems to have nothing to do with the length of the label but with the fact that they are identical for both children. This example with long node labels is also affected.

Therefore I changed the title and description of the issue