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From: reher@ucunix.san.uc.edu (Jay R. Reher)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: 3D Graphics
Message-ID: <1991Mar15.202608.25130@ucunix.san.uc.edu>
Date: 15 Mar 91 20:26:08 GMT
References: <91067.230242R18QC@CUNYVM.BITNET> <1991Mar10.183032.17717@hoss.unl.edu> <1991Mar11.192635.6235@ucunix.san.uc.edu> <27984@netcom.COM>
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>For crying out loud, we're talking Amigas here.  Can you imagine doing
>several frames a second using software Z-buffering?  No way.  A BSP tree
>method might certainly do some good (assuming only the viewpoint moves,
>which is a rather severe assumption).  We're talking depth sorting here,
>not depth cueing (who mentioned cueing?)  The Newell-etc. algorithm is
>the best method I've found after two years of coding, study, and reading
>every textbook on the subject.  If you've got a real suggestion, there are
>several of us very much interested!

	You obviously didn't read the entire article, and the two previous
ones that is spawned from.

	First of all, Did anyone mention animation ???? NO ! The original post
was a beginner in 3D graphics wondering about hidden line removal techniques,
not real time animation.
	
	Second , The deal with cueing was a terminology mistake that I 
clarified. I didn't see you clarify anything, or offer how the algorithm
that you use works.

	Third, It was a real suggestion, but since you don't seem to care
about the novice graphics programmers, you couldn't see it.
	
>...and takes several minutes for a scene of average complexity, at least.
>Any ideas for something usable for virtual reality (what we're all
>interested in nowadays), say, at minimum 1 frame a second?

	Sure it does, I'll bet your algorithm can't do smooth real time
animation, except for extremely simple scenes can it ??  As for VR, don't
knock my suggestion cause you wanted a VR suggestion. Thats lame, really lame.

	The best way to do animation that I have used, is to generate each 
image, then dumptoiff, then make an anim out of it. No it isn't interactive,
and it does take some time and patience, but it works for us beginners.

>........Ben, trying to be nice but having sweated blood on this project
>for a long time, may start to show signs of cracking.  Sorry.

	Since you are cracking we can forgive you, but next time you go 
looking for VR solution, try sci.virtual-worlds.

					Jay Reher