From: quacci AT vera DOT com (jon)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: 3d Engine
Date: Mon, 07 Apr 1997 01:01:56 GMT
Organization: Yale University
Lines: 31
Message-ID: <334840c9.2667493@news.cis.yale.edu>
References: <332B95CF DOT 276F AT postoffice DOT worldnet DOT att DOT net> <19970316 DOT 130737 DOT 4935 DOT 1 DOT chambersb AT juno DOT com> <332c9929 DOT 31474189 AT news DOT cis DOT yale DOT edu> <332F3376 DOT 6C1E AT tc DOT umn DOT edu> <332f71e4 DOT 20458683 AT news DOT cis DOT yale DOT edu>
NNTP-Posting-Host: slip-ppp-node-01.cs.yale.edu
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Article <01bc3646$593530c0$LocalHost AT anthonyb> said:

>and its still useless crap unless you buy the lib.  Which I imagine
>actually does the real work that would be worth knowing about.
>-- 

>::-)

This in regard to the comanche-like engine hgtf_1-0.zip, found at
ftp://x2ftp.oulu.fi/pub/msdos/programming/djgpp2/


I don't understand your point. If memory serves, the guy who wrote
jlib isn't selling it, and provides all source (also available at the
above site). He only uses jlib for the port, not the original demo
author's lib.

 Fact is, the jlib author (Jonathan Griffiths, I think) doesn't
actually rely on jlib all that much in his djgpp port; mostly for
convienience things like dealing with reading the bitmaps and the
like. The real machinery of the engine is pretty much straight C-code.

Anyway, I'm still hoping to understand how this program works better;I
can follow it's details, but I'm not sure why it does what it does,
the overall picture. I think at this point the problem is that I don't
understand the principles behind this sort of high-speed heightfield
rendering, and I don't know where to look it up. Most texts I've seen
are concerned with high-res/ultra-slow graphics rendering for "art"
sorts of pursuits, not lo-res/lo-precision speed rendering. Any ideas
where to look, or clues as to the overall picture of how this little
engine works?