Article View: comp.sys.next.programmer
Article #1438Re: Using NeXT 3D kit to dump tesselated surfaces
From: Shane G. Artis
Date: Mon, 12 Oct 1992 16:11
Date: Mon, 12 Oct 1992 16:11
31 lines
1878 bytes
1878 bytes
In article <Oct12.040326.76442@yuma.ACNS.ColoState.EDU> ns111310@longs.LANCE.ColoState.Edu (Nate Sammons) writes: >Well, > >If you are looking for a sneaky way to do this on a low level, >the lowest I can think of is manipulating the RIB file directly, >and bypassing the 3DKit. As I assume you know, RIB files are just >text... so it is a simple matter to get at them... I don't want to >make it sound too simple, but writing a program to parse a text >file and convert the wanted parts should not be that hard. > >'hope this helps. > >-nate > ns111310@longs.lance.colostate.edu Actually this is exactly what I'm trying to avoid. Tesselating surfaces given the surface paramtrization only is a huge and difficult job, especially when you're dealing with NURB patches, Constructive Solid Geometry objects, and so on. Try writing a program that dumps the subtraction of a cylinger from a sphere as a surface of polygons and you'll see what I mean. However, the 3Dkit does this all automatically so I want to get at its results. In addition, the 3Dkit knows how to maintain object hierarchies, keep track of surfaces associated with those objects, and so on. I _don't_ want to reinvent this wheel! Anyway, thanks for trying to help. Anyone have any other ideas? Shane
Technical Details
Message-ID:
<1992Oct12.161108.10234@athena.mit.edu>Path:
arc1-ca.pugleaf.net!sparky!uunet!snorkelwacker.mit.edu!bloom-picayune.mit.edu!athena.mit.edu!shanegaReferences:
<1992Oct11.221240.23292@athena.mit.edu> <Oct12.040326.76442@yuma.ACNS.ColoState.EDU>Show Full Headers
Complete Article Headers
Newsgroups: comp.sys.next.programmer Path: arc1-ca.pugleaf.net!sparky!uunet!snorkelwacker.mit.edu!bloom-picayune.mit.edu!athena.mit.edu!shanega From: shanega@athena.mit.edu (Shane G. Artis) Subject: Re: Using NeXT 3D kit to dump tesselated surfaces Message-ID: <1992Oct12.161108.10234@athena.mit.edu> Sender: news@athena.mit.edu (News system) Nntp-Posting-Host: e40-008-10.mit.edu Organization: Massachusetts Institute of Technology References: <1992Oct11.221240.23292@athena.mit.edu> <Oct12.040326.76442@yuma.ACNS.ColoState.EDU> Date: Mon, 12 Oct 1992 16:11:08 GMT Lines: 32