lslipp@utcsri.UUCP (05/07/87)
Our lab is in the process of developing a standardized polygon-mesh
file format for our various modeling and rendering programs.
In our discussion, it was pointed out that relatively little
was known about polygon formats at other sites (Those mentioned:
MOVIE.BYU and the OFF format developed by R.J. Rost at DEC).
Since this topic is no doubt useful to many labs, we thought it
would be worthwhile to begin a discussion on the net. Some of the
areas we discussed were:
i.e. - organization of vertex, edge and polygon data within a file,
- amount of topological information maintained within
the file as opposed to generation of that information
by the application program.
- colour (should be able to specify: per vertex - for Gouraud shading,
per polygon, or per object)
- normals (should be able to specify: per vertex - for Phong Shading,
or per polygon)
- texture (should be able to specify: separate one for each polygon,
or one for the entire object)
- hooks for future expansion
- additional information
Our own discussion was quite free-wheeling, and we thought it
might be interesting to hear other views on this subject.
--
Leonard B. Slipp Dynamic Graphics Project
Computer Systems Research Institute
(416) 978-6619 University of Toronto
Toronto, Ontario, Canada
M5S 1A4
lslipp@toronto.CSNET
lslipp@csri.toronto.edu
{allegra,cornell,decvax,ihnp4,linus,utzoo}!utcsri!lslipp