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From: "Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Date: Mon, 31 Oct 2016 13:22:52 -0400
Message-ID: <CAM2RGhQhJm7LOC+tsNqf3aZWM20Fs4WKhR17+YpHfEGMMcT_1g@mail.gmail.com>
Subject: Re: [geda-user] [pcb-rnd] Kicad s-expression import and export now working
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On Mon, Oct 31, 2016 at 12:58 PM, Erich Heinzle (a1039181 AT gmail DOT com)
[via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
> Following the recent implementation of the IO module for kicad legacy
> format export of layouts and footprints, an additional IO module has
> been implemented to allow kicad s-expression format layouts to be
> imported and exported.
>
> The kicad s-expression file format is the newer format used by kicad.
>
> Exported dimensions are preserved without rounding, with the only
> significant discrepancies arising with:
>
> 1) text, since kicad uses the Hershey sans stroke font for footprint
> labelling, but a bitmap font for board text, quite unlike gEDA
> pcb/pcb-rnd's text use.
>
> 2) polygons, since kicad treats polygonal zones as components with or
> without fill that have an attached net and also influence the
> clearance behaviour of vias within its area. This means that users
> will need to adjust the clearance of features within a polygon on a
> feature by feature basis. Import/export of polygon cutouts is yet to
> be implemented.
>
> 3) obround (oval), trapezoidal, and rounded corner rectangular pads,
> supported by kicad, are simply converted to circle, square and
> rectangular pads, respectively.
>
> Some screenshots:
>
> http://imgur.com/a/6T5Vu
>
> http://imgur.com/a/4gVUu
>
> Preliminary testing has been encouraging, but more testing would be
> appreciated. This is the first release, and further round trip testing
> is planned.
>
> All that is required to test at present is, in the trunk directory:
>
> svn up
> ./configure --debug --buildin-io_kicad
> make
> ../pcb-rnd foo.kicad_pcb &
>
> The modular nature of the pcb-rnd code has enabled these plugins to be
> implemented quite quickly, and Igor2 has been very helpful in
> facilitating these efforts.
>
> Regards,
>
> Erich.

Great work!

-- 
Home
http://evanfoss.googlepages.com/
Work
http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/

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