Re: [CAVERNUS] *.dxf loader

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mark++at++cs.ualberta.ca
Tue, 2 Mar 1999 10:53:55 -0700 (MST)

>
>
> I tried to read a DXF file, from 3D Studio Max, by performer. Here is the
> message I got:
>
> PF Warning: decompConcave() Could not decompose concave
> polygon!
>
>
> Looks like a newer feature of DXF. Any help will be appreciated.
>
> Second question is: where can I get a 3DS loader or convertor? Is it
> somewhere in my Performer or Inventor packages?
>

In general exporting a DXF from 3D Studio Max isn't a particularly
good idea, its not its native format. For 3D Studio Max and
similar applications we use the 3DS file format, which is a
much better choice. Its geometry is in terms of triangles,
so you never run into the concave polygon problem.

We have produced 3DS loaders for OpenGL and some of our 3D
packages. These loaders are based on the 3DS file reader
that is provided by Kinetic/AutoCAD (you can get this from
their ftp site, its C code and sort of documented). You
will need to write the performer code needed to display
the model.

-- 
Dr. Mark Green                                 mark++at++cs.ualberta.ca
Professor                                      (403) 492-4584
Director, Research Institute for Multimedia Systems (RIMS)
Department of Computing Science                (403) 492-1071 (FAX)
University of Alberta, Edmonton, Alberta, T6G 2H1, Canada

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