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- From: dstamp@watserv1.uwaterloo.ca (Dave Stampe-Psy+Eng)
- Newsgroups: sci.virtual-worlds
- Subject: Re: DESIGN: Doors between virtual worlds
- Message-ID: <BstptD.Ezq@watserv1.uwaterloo.ca>
- Date: 11 Aug 92 14:34:25 GMT
- References: <1992Aug10.164950. <1992Aug11.064350.5974@u.washington.edu>
- Sender: news@u.washington.edu (USENET News System)
- Organization: University of Waterloo
- Lines: 41
- Approved: cyberoid@milton.u.washington.edu
- Originator: hlab@milton.u.washington.edu
-
-
-
- autodesk!robertj@uunet.UU.NET (Young Rob Jellinghaus) writes:
-
- >Ah. This assumes that the "visual representation" of this portal-door
- >can in fact be a projected perspective onto another place. (It can't
- >be a static projection, as then it'd just be a painting. It needs to
- >change in perspective as you move around looking into it.)
- >
- >I was just thinking of what this kind of door would look like, and it
- >occurred to me that there is a physical counterpart: a hologram! A
- >hologram is just a physical piece of plastic which reflects light in
- >such a way as to create a three-dimensional view of some objects in a
- >virtual space. These "dimensional doors" would be essentially
- >cyberspatial holograms, which allow you to teleport to the space on
- >the "other side" by walking through them. (And what's more, they
- >could be _moving_ holograms!)
-
- The easiest way to do this is still to make a visual link to the area
- you're viewing through the portal. Then your machine is doing the
- work, not someone else's. The link functions as if an extension was
- made to your region-- visible elements of your region become invisible
- behind the portal, and objects from the viewed region are put in place
- using the desired portal region transform. THis handles "weird space"
- portals nicely as well. When the portal dies, the objects are removed
- from your viewspace.
-
- Option 2 is to set up an additional renderer, make an image of the
- region, and copy it into the image. Possible, but too expensive for
- now. Imagine, for example, that you are using stereoscopic glasses.
- The left and right eye views must have their seperate left-and-right
- eye views of the world beyond the portal as well.
-
- Any opinions on the render-and-copy versus the visibility link?
-
- --------------------------------------------------------------------------
- | My life is Hardware, | |
- | my destiny is Software, | Dave Stampe |
- | my CPU is Wetware... | |
- | Anybody got a SDB I can borrow? | dstamp@watserv1.uwaterloo.ca |
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