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Date: Sun, 06 Apr 2014 16:41:35 -0500
From: John Griessen <john AT ecosensory DOT com>
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To: geda-user AT delorie DOT com
Subject: Re: [geda-user] Cooper arcs in footprint
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Reply-To: geda-user AT delorie DOT com

On 04/06/2014 08:19 AM, Stefan Salewski wrote:
> On Sun, 2014-04-06 at 13:23 +0200, Gabriel Paubert wrote:
> I think gerber formats supports arcs.
>> >
>> >Indeed, but it does not support ellipses:
> That is interesting (and surprising for me). If that is true, maybe we
> should restrict support to circular arcs only -- which is much simpler.

The circular sections only limitation could be historical accident, or
because it is easier to analyze paths with a simple curvature and constant
width perpendicular to path.  Stretched sections would have varying widths,
so they'd be worse for constant impedance paths, which has been one motivator
for smooth curvy paths.