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Subject:	Re: [geda-user] FOSDEM
From:	Peter Clifton <pcjc2 AT cam DOT ac DOT uk>
To:	geda-user AT delorie DOT com
Date:	Fri, 13 Feb 2015 00:43:39 +0000
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On Mon, 2015-02-09 at 08:04 +1300, Lilith Bryant wrote:
> On 2015-02-09 04:50:50 AM, Peter Clifton wrote:
> > 
> > Sometimes I think my efforts here would be better spent writing a solid
> > test-suite for the polygon algebra, rather than playing whack-a-mole
> > with these bugs on a case-by-case basis.
> > 
> 
> If you want another mole ;)  I have had issues with polygons with giving 
> "PBO Sub 3" errors and being only half rendered.   Tracked it down to
> having duplicated vertices.

I'm always happy to receive test-cases. (Ideally ones pre-prepared to
remove all the parts of a design non-relevant to reproducing the bug).

Duplicated vertices are known to cause problems, but they _should_ be
stripped out by the polygon handling code. (Although, I know of at least
one bug that introduces them).

Were your duplicate vertices introduced in the polygon shape definition
in your PCB file, or created by PCB in the act of calculating clearances
etc..?

If you can, send me the test-case!.

Peter


-- 
Peter Clifton <peter DOT clifton AT clifton-electronics DOT co DOT uk>

Clifton Electronics

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