Re: gEDA-user: Strange polygon behavior (pcb 20091103)

[Christoph Lechner <cl0023@xxxxxxx>]

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Tamas Szabo wrote:
> Christoph Lechner wrote:
>> When I enable thin draw poly mode, the outline of the polygon shown is
>> just as I want it to be. If pcb would fill only the region within the
>> contour, there would be no problem.
> 
> Ok, this it not he solution, but for me, if I remove R1 and X1 the
> problem disappear. Did you realized it?
Yes, I can confirm that. But I didn't realize it before. But what is
wrong about these two components?

My workaround was to overlap multiple non-concave polygons resulting in
the polygon I need.

> 
> Anyway, earlier I had a similar problem with one of my board. I deleted
> some wires (overlapped, etc), moved some components, and it became fine.
> 
> Of course I think it is not the right way things should work (maybe a
> bug:-)
> 
> Further, try to generate a gerber as well and check that too. Is it
> appear on the gerber output?

The wrong polygon does appear on the Gerber output as well. So it's not
the GUI, but some of the internal workings of PCB.

It's the last edge of the polygon contour causing the trouble. When
drawing new tracks, they remove the polygon copper only within the
contour I defined, not in the unwanted part of the polygon.

- - cl
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