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Path: utzoo!mnetor!seismo!rutgers!cbmvax!grr
From: grr@cbmvax.cbm.UUCP (George Robbins)
Newsgroups: comp.sys.amiga
Subject: Re: Amiga news (genlock & lots more, *long* but juicy)
Message-ID: <1115@cbmvax.cbmvax.cbm.UUCP>
Date: Mon, 15-Dec-86 04:49:11 EST
Article-I.D.: cbmvax.1115
Posted: Mon Dec 15 04:49:11 1986
Date-Received: Tue, 16-Dec-86 19:18:56 EST
References: <1272@zen.BERKELEY.EDU> <627@hp-sdd.HP.COM>
Reply-To: grr@cbmvax.UUCP (George Robbins)
Organization: Commodore Technology, West Chester, PA
Lines: 30

In article <627@hp-sdd.HP.COM> nick@hp-sdd.UUCP (Nick Flor) writes:
>In article <1272@zen.BERKELEY.EDU> hatcher@ingres.Berkeley.EDU.UUCP (Doug Merritt) writes:
>>
>>They also showed a *** 3-D ray-traced smooth-motion animation *** showing
>>a clown juggling 3 reflecting balls!!!!!! Extraordinary. The absolute best
>>by 2 orders of magnitude that anyone has yet seen on an Amiga. This
>>was done by one Eric Graham...
>
>But, did he cheat? Can you see the clown reflected in the balls?
>Was the clown rendered also?  
>Nick

Yes, the clown is reflected in the balls, yes, the balls are reflected in
each other, and yes, the shadows seem seem to apply all the correct places.
The perspective seems a bit warped, and poor clown has his elbows pinned to
the backdrop...

Admittedly, the imagery is pretty simple compared to some of the other Amiga
ray tracing images, but it's still a pretty incredible business card!!!

The amimation uses a small set of images (12?), but this lets everything fit
in memory and blast out full speed.  I don't know if he's displaying a full
screen for each frame, or just alternating between two, and substituting areas.

Anybody got any other neat demos that Jack can't fake on those ST thingies?

-- 
George Robbins - now working for,	uucp: {ihnp4|seismo|rutgers}!cbmvax!grr
but no way officially representing	arpa: cbmvax!grr@seismo.css.GOV
Commodore, Engineering Department	fone: 215-431-9255 (only by moonlite)