stereoscopic CAVE rendering in Performer

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Yohan Baillot (baillot++at++ait.nrl.navy.mil)
Thu, 16 Sep 1999 12:13:21 -0400

Hello pfPeople,

We were thinking about the special case of rendering where the viewpoint
is not fixed with respect to the projection screen. In the case of the CAVE,
not only the projection axis may be not centered on the middle of the
projection
screen but the viewving direction is also not perpendicular to each
projection screen.
The use of pfMakeFrustrum allows to off axis projection but consider the
user is
looking perpendicularly to the screen. In a general case I case I would need
to
specify the four corners'coordinates of my projection screen in eye
coordinates.
Is there such capabilities in Performer. If not, it is certainly possible to
generate the
projection Matrix given four coordinates of a projection screen to built a
frustrum.
Anybody knowns about some work done on that?

Thanks

Yohan

 _______________________________________________________________________

 Yohan BAILLOT

 Virtual Reality Laboratory,
 Advanced Information Technology (Code 5580),
 Naval Research Laboratory,
 4555 Overlook Avenue SW,
 Washington, DC 20375-5337

 Email : baillot++at++ait.nrl.navy.mil
 Work : (202) 404 7801
 Home : (703) 566 3684
 Cell : (407) 222 6359
 Fax : (202) 767 1122
 Web : www.ait.nrl.navy.mil

_______________________________________________________________________

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