Re: [brlcad-devel] GSoC 2015 update (X3D importer)

[Daniel R. <dan...@gm...>]

2015-08-17 13:50 GMT+02:00 Djimeli Konrad <djk...@gm...>:
>
>
> On 17 August 2015 at 09:03, Daniel Roßberg <dan...@gm...>
> wrote:
>> Konrad,
>>
>> What does the standard say about the unit used in X3D?
>
> According to X3D Unit Specification Updates the standard unit for length is
> meters.

Aha, then there is really a factor 1000 between X3D and BRL-CAD, i.e. m in mm.

>> You could send us your g-x3d.c file, e.g. via this mailing list.
>> Maybe someone has an idea how to fix the export.
>
> Attached to this mail is the g-x3d.c file which I found in src/conv/ of the
> BRL-CAD source code.
> I have an idea of how to rewrite the code, as modification of g-stl.c but I
> would have to get a better
> understanding of the code first to see if there is a chance of fixing
> whatever the problem is without
> rewriting the whole code.

So you haven't touched g-x3d.c yet.  It looks like g-x3d.c uses an
obsolete variant of the tessellation algorithm.  This would mean you
had to rewrite it.  However, your main focus should be to prepare a
complete and clean patch for your X3D import including the
documentation, e.g. a manual page.


Regards,
    Daniel