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Tue, 01 Dec 2015 05:12:09 -0800 (PST) | |
Date: | Tue, 1 Dec 2015 14:12:03 +0100 |
From: | "Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com> |
To: | geda-user AT delorie DOT com |
Subject: | Re: [geda-user] PCB: clearouts in polygons slightly off, fix? Also |
clearance | |
Message-Id: | <20151201141203.8718b21c9e3e9b37d0b07472@gmail.com> |
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References: | <20151201124843 DOT GC24702 AT abax> |
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It might be related, I found clearance is correct then using default values but then clearance is changed it is wrong. I do not remeber the details right now. I have been busy using gEDA for weeks and did not yet have time to spend any time looking at code. Regards Nicklas Karlsson On Tue, 1 Dec 2015 13:48:43 +0100 Martin Beranek <martin AT mb5 DOT cz> wrote: > Hi all, > > I have noticed that the code cutting holes/clearance into polygons > around traces and pads (that is code in polygon.c) creates contours > which are a little off. > > For example long straight edges of the clearout around square pad are > not exactly parallel with the pad edges because round corners are > generated without last vertex. There is few similar issues in the code. > (You can see this, without reading the code, by zooming in to the edge > of the small pad's clearout, preferably with the finest grid setting). > > I am considering to fix it, at least for my personal use, but I guess it > should be fixed in the project too. But ... fixing this issue causes > existing PCB files to be rendered slightly different (more correct in > fact, but, nonetheless, different compared to the current situation). > The differences are minor, but existing and one can imagine that there > is chance that they can trigger new DRC error for example. > > What is the project's opinion on this? Do you want the fix? Should one > worry about backward compatibility in this case? If so, then how? > > Martin
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