[alt.sources] OFF renderer using SIPP.

u87rpb@psy.oxford.ac.uk (Ray Bellis) (01/29/91)

Keywords: tar uuencode

Here's a little something I knocked up earlier this week.

/*-
 *
 *  offtoppm.c
 *
 *  (C) R. P. Bellis 1991
 *
 *  Take an OFF format object and render it into a ppm file.
 *  Objects with *.pcol or *.ipcol data are rendered using a
 *  shader which places the polygon colour at each vertex
 *  using the texture coordinates (could also be used for
 *  *.vcol files but there aren't very many of them at the
 *  moment, so I haven't written stuff to handle them yet).
 *
 *  Usage:
 *      offtoppm <off file> <ppm file> [scale]
 *
 *  Requires:
 *      SIPP polygon preprocessor library
 *      OFF Object and C library
 *      PBM+ for conversion to your favourite file format.
 *
 *  Bugs/ToDo:
 *      Image size hard coded to 256 x 256.
 *      Viewing parameters hard coded.
 *      Can only handle "fff" format colours and vectors.
 *      Assumes `default' constants are in "fff" format.
 *      Doesn't handle vertex colours.
 *      Doesn't know about OFF diffuse reflection coefficent.
 *      Back faces not handled properly (really a SIPP bug).
 *
 *  License:
 *      Do with this what you will, just don't claim that
 *      you wrote it.
 *
 */

--8<--8<-- Cut here --8<--8<--
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end

garyc@hobbes.wv.tek.com (Gary Combs) (02/01/91)

In article <9101291139.AA08535@brain.psych.>, u87rpb@psy.oxford.ac.uk (Ray Bellis) writes:
|> 
|> Here's a little something I knocked up earlier this week.
|> 
|>  *      offtoppm <off file> <ppm file> [scale]
|>  *
|>  *  Requires:
|>  *      SIPP polygon preprocessor library
|>  *      OFF Object and C library
|>  *      PBM+ for conversion to your favourite file format.

I have the SIPP libraries and the PBM+ libraries but where do I
get the OFF library?



-------------------------------------------------------------------------------
Gary Combs
Tektronix, Inc
NWD Technical Marketing Support
(503)685-2072
uunet!tektronix!shamu.WV.TEK!garyc
-------------------------------------------------------------------------------