DB modeling tool

Overlapping Relation Lines

Bug #396033 reported by DMA02 on 2009-07-06

This bug affects 2 people

Affects		Status	Importance	Assigned to	Milestone
	DB modeling tool	New	Undecided	Unassigned

Bug Description

Using dbmodel v 0.2.0 on Linux.
I have as many as 5 tables (aligned vertically) linked to 1 table with a relationship. Sometimes the relationship lines overlap each other or "travel" behind other tables. This ends up becoming confusing after a while and moving the tables around helps a bit but the relationship lines are not that flexible.

Could there be support so that lines will never overlap ?
Could there be a feature where we can manually set the points of the relationship line ?

Revision history for this message

DMA02 (george-dma) wrote on 2009-07-06:

over_lap.png Edit (36.7 KiB, image/png)

An example of the overlapping lines.

Revision history for this message

deep42thought (deep42thought) wrote on 2018-03-13:

pfeile-entwirren.patch Edit (1.2 KiB, text/plain)

I was bothered by the same. The attached patch fixes the "crossing links" issue:
So far links were ordered by direction and if that was identical, then they were ordered by the link references. Since links between the same tables have same directions, this leads to crossing links.
I changed the ordering to:
1st: by direction (as before)
2nd: by wether we are start or end of the link
3rd: by reference of link ascending if we're the start and descending if we're the end.

Note, that links may still be behind tables and in seemingly ugly places, but at least they do not cross anymore.