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- Xref: sparky comp.graphics:13600 comp.sys.sgi:18643
- Path: sparky!uunet!stanford.edu!rutgers!bobsbox.rent.com!bobl
- From: bobl@bobsbox.rent.com (Bob Lindabury - SysAdmin)
- Newsgroups: comp.graphics,comp.sys.sgi
- Subject: Re: Controlling Lighting
- Message-ID: <bobl.b25b@bobsbox.rent.com>
- Date: 9 Jan 93 16:37:57 GMT
- References: <C0DABM.16F.1@cs.cmu.edu> <p5CTrA0BBh107h@eosvcr.wimsey.bc.ca>
- Distribution: comp
- Organization: Raven Enterprises -- Piscataway, NJ USA
- Lines: 45
- X-NewsSoftware: GRn 1.16f (10.17.92) by Mike Schwartz & Michael B. Smith
-
- In article <p5CTrA0BBh107h@eosvcr.wimsey.bc.ca> aew@eosvcr.wimsey.bc.ca (Alan Walford) writes:
- > In <C0DABM.16F.1@cs.cmu.edu> gleicher@CS.CMU.EDU (Michael Gleicher) writes:
- > >I'm looking for good ways to interactively control lighting. There's
- > >remarkably little in the literature - about all I know about is Poulin and
- > >Fournier's paper in last year's interactive 3D symposium.
- >
- > I saw a demo of a new Silcon Graphics modelling program that I felt had
- > a very nice way of adjusting, moving, and rotating light sources. I'm afraid
- > I do not remember the name of the program. Anybody know which one I am
- > refering to? When you clicked on a light source in their view (which showed
- > the main object and the cameras and the light source) a set of 3 axes came up
- > and one manipulated the object (light or camera) along these axes. It is
- > too difficult to explain in words. You would have to see it for yourself. Very
- > slick!
- >
- > Al
- >
- > --
- > Alan Walford Eos Systems Inc., Vancouver,B.C., Canada Tel: 604-734-8655
- > aew@eosvcr.wimsey.bc.ca OR ...uunet!wimsey.bc.ca!eosvcr!aew
-
- Have you ever seen Lightwave 3D for the Amiga? The Scene Layout screen
- can be set with buttons for visability of items other than the object
- such as camera, lights, grid, overlay (NTSC,Letterbox). When you make
- the lights visible, you see a full 3D lighting instrument with barnd
- doors. You can then click on the light button so that you have control
- of the light. You can then click up/down through the lighting sources
- and pick the light you want. From there you can just move the mouse to
- rotate or move the light where you want it. You can see this in a
- perspective view and any of the other views as well, you can do it in
- the camera view if you want.
-
- It's very elegant. The only items I can think of that would make it
- even better is something to show the actual cone angle, falloff and edge
- angle. If that was in there, you would be able to see exactly where
- your light is shining and how large an area it is actually going to
- affect.
-
- --
- Bob Lindabury
-
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