> Message: 7
> Date: Tue, 05 Aug 2014 11:10:05 -0400
> From: Christopher Sean Morrison <brl...@mac.com>
> Subject: Re: [brlcad-devel] Interest in contributing to brlcad
> To: BRL-CAD Developer Mailing List
> <brlcad-devel@lists.sourceforge.net>
> Message-ID: <1a6431a3-1f48-4c52-acca-97961cdbc...@mac.com>
> Content-Type: text/plain; charset=us-ascii
>
>
> On Aug 5, 2014, at 6:56 AM, Djimeli Konrad wrote:
>
> > Hello
> >
> > My name is Djimeli Konrad and i am interested in
> contributing to the open source through brlcad. I am primarily a c/c++
> programmer from Africa and would like to work on any of the brlcad
geometry
> converters. Presently i am doing some research on how import and export
> work but i can not really decide on weather to improve any of the existing
> converter or create a new one among those on the ideas page, since i do
not
> fully understand the concept and also my limitation. I would be glad to
get
> any pointer that would help facilitate my understanding of this aspect and
> i am willing to dedicate the rest of my summer holiday to learn more about
> brlcad and especially file import and export as it seem to be something
> very interesting to work on.
>
> Hi Konrad and welcome! Glad to hear about your interests. Working on
> converters is actually a high priority for us right now because we're
> creating a new geometry conversion library that can be embedded into
> applications external to BRL-CAD. This requires improving our existing
> converters and implementing new ones.
>
> To get started, I would recommend first extending / improving one of our
> existing converters. It's harder to read code than to write code, but
that
> will give a much better understanding of how our converters work. It will
> also better prepare you for writing a new converter, should you attempt
> that as well.
>
> A simple task to begin with would be to make any existing converter
> convert all top-level objects by default. Currently, you specify which
> file (e.g., myfile.g) and which object(s) to convert (e.g., object1 and
> object2), so when you run something like g-stl, the usage looks like this:
>
> Usage: g-stl [-bvi8] [-xX lvl] [-P num_cpus] [-a abs_tess_tol] [-r
> rel_tess_tol] [-n norm_tess_tol] [-D dist_calc_tol] [-o
> output_file_name.stl | -m directory_name] brlcad_db.g object(s)
>
> And a typical use would be:
>
> g-stl -o myfile.stl myfile.g object1 object2
>
> You could make it work so that you don't have to specify any objects:
>
> g-stl -o myfile.stl myfile.g
>
> This would convert all top-level object(s). To make that work, you'll
> probably want to use the db_ls() function (e.g., something like
db_ls(dbip,
> DB_LS_TOPS, &paths); will get a list of objects). The converters are in
> the src/conv directory. You can see db_ls in use in the src/libged
> directory.
>
> Cheers!
> Sean
>
Hi Sean
I just submitted a patch on g-stl conversion i wish you review it let
me know if that is what you expected, so could either refine my work or
move on to the other converters.
Cheers!
Konrad
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