X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
X-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20120113;
        h=date:from:to:subject:message-id:in-reply-to:references:mime-version
         :content-type:content-transfer-encoding;
        bh=W3D5teD+MTvlcbr1vYuMFuIfcbV04U4BR0BLdcMBGxU=;
        b=e3mv6Zr3L9aEF3u/4qNi5CxcYZQSYBC1NirjS+NLx5c1spZqdND/8I/qEP+nT1oJcr
         fqZZBBC+YS0d++AazjMXbx08ob2gJQ+nAeBcYTLsCkVwygrNkpaR4dfpxBHnamXYx4uJ
         6CSsoT01OSYpBw1bqfIu27qXIZAXLHOwFsG/k/37zzedbXU5lrj3+V2mFtbk3j+FrXK/
         cc3/2RCszRNWPBkIPVd6tQbAHujhMTpS6jhs+/TZrcFr9fhm2Jjnx/583aaHyMDjn3+a
         VvT8OGasdd1mETApG+yrrock7rXclLAa1054s3AAnKHgrCT3nsBVBM/ZVFHRItRtqDQ+
         Wwag==
X-Received: by 10.28.186.138 with SMTP id k132mr37359361wmf.75.1448975529126;
        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>
In-Reply-To: <20151201124843.GC24702@abax>
References: <20151201124843 DOT GC24702 AT abax>
X-Mailer: Sylpheed 3.5.0beta1 (GTK+ 2.24.25; x86_64-pc-linux-gnu)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Reply-To: geda-user AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: geda-user AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

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