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Subject: Re: [geda-user] Cooper arcs in footprint
From: Stefan Salewski <mail AT ssalewski DOT de>
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Date: Sun, 06 Apr 2014 02:12:56 +0200
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On Sat, 2014-04-05 at 19:49 -0400, Evan Foss wrote:
> I had this problem last year. I was trying to do a footprint for a PCB
> mounted microphone. In the end I had to approximate it by using a lot
> of short strait traces at angles.

Indeed KiCad users had that problem, I guess they still have it.
KiCad had no support for copper arcs at all about one year ago!

For your microphone there is a simple solution -- ad a copper arc in PCB
editor after you had positioned the footprint with missing arc.

I still wonder why KiCad has avoided copper arcs so long, and why PCB
avoided copper arcs in footprints. I think gerber formats supports arcs.
One problem with arcs is: If we have stretched arcs, DRC may be much
more difficult -- I have to admit that I have no idea how to test
stretched arcs for intersection with other elements (fast). Another
problem can be autorouting when we have arcs on the board -- for
geometrical and topological routers there should be some difficulties.