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From: Kai-Martin Knaak <knaak AT iqo DOT uni-hannover DOT de>
Subject: Re: [geda-user] support arcs with square ends?, ellipse segment arcs?
Date: Tue, 27 Oct 2015 22:44:30 +0100
Organization: Institut =?UTF-8?B?ZsO8cg==?= Quantenoptik
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Reply-To: geda-user AT delorie DOT com

DJ Delorie wrote:

>> As is now arcs for 90 degrees work well but ideally arc angle should
>> depend on connecting lines, did I understand this correct?
> 
> Arcs with arbitrary start/end angles are already supported, and used
> by the pullers and toporouter.

There is a patch on launchpad which adds support for arbitrary angles to 
the GUI:	https://bugs.launchpad.net/geda-project/+bug/699435

The patch was originally uploaded by Ineiev in 2007. I tested it back in 
the days and liked it quite a bit. It got some use in real world projects 
for layouts with weird shapes. Fractional circles also come handy with the 
silk of footprints. IIRC, I did my APEM TL46 switch with this utility:
http://www.gedasymbols.org/user/kaimartin_knaak/footprints/switches/APEM_TL46.fp

The patch got an update in 2008 by Ineiev and a rework by Bert in 2012 
which was necessary because pcb changed the internal representation of 
coordinates. At the end of 2012 Peter C. signalized to ensure that the 
patch does not bit-rot anymore. However, the most recent version available 
on launchpad just failed to apply to current git/head. I will try and see 
if my coding skills suffice to make the patch succeed again.

---<)kaimartin(>---
-- 
Kai-Martin Knaak                                  tel: +49-511-762-2895
Universität Hannover, Inst. für Quantenoptik      fax: +49-511-762-2211	
Welfengarten 1, 30167 Hannover           http://www.iqo.uni-hannover.de
GPG key:    http://pgp.mit.edu:11371/pks/lookup?search=Knaak+kmk&op=get