unexpected polygon clip behavior
Bug #699313 reported by
Mark Rages
This bug affects 1 person
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| pcb |
New
|
Undecided
|
Unassigned | ||
Bug Description
If the attached pcb file is loaded, and a trace is drawn through the polygon (solder side), unexpected clipping happens.
If the trace is drawn in two segments, then the cursor is positioned over the segments' junction and "delete" is pressed, the polygon disappears entirely and "Error while clipping PBO_ISECT: 3" is printed on the terminal. Undo is also broken at this point.
This is with recent git with patch "arcarc.05xii.diff" applied.
Revision history for this message
| Mark Rages (markrages) wrote | #1 |
Revision history for this message
| Ineiev (ineiev) wrote | #2 |
| Changed in geda-project: | |
| importance: | Undecided → Medium |
| tags: | added: polygons |
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Hi,
The polygon intersects itself many times (which can be seen in thinline mode).
the results of bisecting of such polygons with a line are not obvious at any rate,
though it is possible that PCB polygon routines don't handle them correctly.
If you need a polygon with holes, you can split it into several intersecting
polygons without holes or use recent "polygon hole" feature.
I think possible fixes might include
* throwing a warning when the polygon loaded from the file intersects itself
* modifying polygon tool to not permit intersecting polygons
Kind regards,
Ineiev