home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!noc.near.net!hri.com!spool.mu.edu!sgiblab!sgigate!sgi!odin!koosh.asd.sgi.com!howardl
- From: howardl@koosh.asd.sgi.com (Howard Look)
- Newsgroups: comp.sys.sgi
- Subject: Re: Explorer and Inventor file formats?
- Message-ID: <1992Nov10.014713.24299@odin.corp.sgi.com>
- Date: 10 Nov 92 01:47:13 GMT
- References: <1992Nov9.042614.11719@news2.cis.umn.edu>
- Sender: news@odin.corp.sgi.com (Net News)
- Reply-To: howardl@koosh.asd.sgi.com (Howard Look)
- Distribution: na
- Organization: Silicon Graphics, Inc., Mountain View, CA, USA
- Lines: 43
- Nntp-Posting-Host: koosh.asd.sgi.com
-
- In article <1992Nov9.042614.11719@news2.cis.umn.edu>,
- slevy@noneuclid.geom.umn.edu (Stuart Levy) writes:
- |> Is documentation available for the Explorer and Inventor file formats?
- |>
- |> In particular, I'm hoping to find out about Explorer's Pyramid and
- |> Inventor's geometric data formats, in enough detail to make it possible
- |> to produce code to read and write reasonable subsets of them. I've hunted
- |> through our copies of Explorer 1.0 and Inventor (EOE) 1.0 to no avail.
- |> It's easy to generate sample data files and guess, but it'd be nice to
- |> look at something definitive if possible.
-
- Currently, the only places the Inventor file format is completely
- documented are in the include files and in the man pages, both of which
- you get when you buy the Inventor development kit.
-
- However, if you haven't yet bought Inventor :), we will be releasing a
- document "real soon now" that formally describes the file format. Our
- tech writer is putting the final touches on it now. I would expect to
- see it within a couple of weeks both here and ftp-able from sgi.com.
-
- |> Maybe a couple of meta-questions are appropriate: How stable are these
- |> file formats likely to be in future products? [Clearly no promises
- expected.]
- |> Are they defined primarily by the source code to their library routines
- |> (and so not a suitable subject for documentation)?
- |>
- |> Stuart Levy
-
- The Inventor file format will always be upward compatible either
- directly, or through a simple conversion process. The format currently
- has a header string identifying the version of the file format.
-
- For users of Explorer 1.0 and Inventor 1.0, there is a small program,
- /usr/sbin/so2iv, which coverts from Explorer 1.0 .so files to Inventor
- 1.0 .iv files. Explorer 1.0 used a pre-Inventor-1.0 version of the file
- format. Future releases of Explorer use the Inventor 1.0 (or later)
- version of the file format.
-
- Hope that makes sense.
- Howard
-
- Howard Look Silicon Graphics howardl@sgi.com (415) 390-1780
- ..__ One of these :) after being run over by one of these O-O
-