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From: naughton@wind.Eng.Sun.COM (Patrick Naughton)
Newsgroups: comp.windows.x,comp.graphics
Subject: Re: 3d rotation in room coords?
Message-ID: <9314@exodus.Eng.Sun.COM>
Date: 7 Mar 91 19:02:46 GMT
References: <9103050342.AA20065@maui.coral.com> <13709@life.ai.mit.edu> <13781@life.ai.mit.edu> <1991Mar7.055600.4149@ux1.cso.uiuc.edu>
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In article <1991Mar7.055600.4149@ux1.cso.uiuc.edu>, andreess@mrlaxs.mrl.uiuc.edu (Marc Andreessen) writes:
|> In article <13781@life.ai.mit.edu> sundar@ai.mit.edu writes:
|> >I have since been informed that Apple may have a patent pending on 
|> >using this technique.  [...concerning eyepoint as point on sphere]
|> 
|> Can someone post a number for this, if it's true?
|> 
|> Marc
|> 
|> --
|> Marc Andreessen______University of Illinois Materials Research Laboratory
|> Internet: andreessen@uimrl7.mrl.uiuc.edu_______Bitnet: andreessen@uiucmrl


I believe this is the paper we are talking about:

"A Study in Interactive 3-D Rotation Using 2-D Control Devices"
Michael Chen, S. Joy Mountford and Abigail Sellen
ACM Siggraph '88 proceedings (Volume 22, Number 4, August 1988).

and the technique which I think may have a patent pending is the
"Virtual Sphere Controller".

The principal author can be reached at:

	internet:	chen@apple.com
	AppleLink:	CHEN.M
	mail:		20525 Mariani Ave, MS 76-3H
			Cupertino, CA 95014

-Patrick

-- 
    ______________________________________________________________________
    Patrick J. Naughton				   email: naughton@sun.com
    Sun Laboratories				   voice: (415) 336 - 1080