Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!mit-eddie!rutgers!att!ihlpm!jmdavis
From: jmdavis@ihlpm.ATT.COM (Davis)
Newsgroups: comp.sys.amiga
Subject: Re: Coke 3D
Summary: this and other 3D technologies
Message-ID: <3017@ihlpm.ATT.COM>
Date: 9 Feb 89 14:33:43 GMT
References: <8902071540.AA02699@terra.oscs.montana.edu>
Organization: AT&T Bell Laboratories - Naperville, Illinois
Lines: 45

In article <8902071540.AA02699@terra.oscs.montana.edu>, iphwk@MTSUNIX1.BITNET (Bill Kinnersley) writes:
> How does Coke-3D work?  Would it be possible to make a Coke-3D animation
> for the Amiga?
> 

"Coke-3D" works by "slowing" the light getting to one eye so that a rotating
object/scene/etc. will present one angle to one eye before the other. The
3D effect disappears when the object stops rotating. The reason for "slowing"
is that I am not sure whether the light itself is slowed (if it is, then
I  w_a_n_t  some of that material) or just that the other lens is dark and it
slows the eye's registration of the object on the retina (this seems much
more likely).

It should be possible to use this on an amiga, buy some coke, get the glasses,
get your favorite rotating object demo (block AMIGA should be fine) and see
what happens. You may want to vary the rotation rate to maximize the effect.
Also, make sure the object is rotating from "slowed" eye to "fast" eye. This
means it must rotate around the Y axis of the monitor. It may work better
if the object isn't tilted while rotating (I believe the block AMIGA is
tilted).

=======

There are other 3-D technologies, but they involve more money. There is
the vibrating mirror effect that was used by a now defunct (I believe)
medical imaging company. Also, I have seen a rather interesting arrangement
of lenses that when fit over an old Apple II+ (in this case) produced an
interesting 3D effect. Both of these require no glasses to view. I can talk
at length about the first, but the second one still baffles me.

Why bring this up, well the second was produced by a "garage type" inventor
in California, and if word gets out that people are interested, he may be
able to revive his stuff.

> --
> --Bill Kinnersley
>   Physics Department   Montana State University    Bozeman, MT 59717
    ^^^^^^^^^^^^^^^^^^^
	There was a discussion on sci.physics about "coke-3D"
	
-- 
----------------------------------------------------------------------------
			Mike Davis ..!att!ihlpm!jmdavis

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