Re: How to get smooth horizon with channel group ?

Angus Dorbie (dorbie++at++sgi.com)
Mon, 25 Jan 1999 10:20:17 -0800

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> Now, some people do actually want to project 180 degrees
> on a single flat surface.

This is impossible.

For multi-channel flat surfaces asymmetric frusta are sufficient but on
a single pipe they are redundant and introduce unnecessary overhead.

A single video on a 180 degree curved screen with distortion correction
is possible but that's complex and requires a thorough understanding of
the projection geometry and associated issues.

Cheers,Angus.

-- 
"Only the mediocre are always at their best." -- Jean Giraudoux

For advanced 3D graphics Performer + OpenGL based examples and tutors:
http://www.dorbie.com/

• Next message: Chris Mitchell: "An easy question"
• Previous message: Avi Bar-Zeev: "Re: How to get smooth horizon with channel group ?"
• Maybe in reply to: Cao Zhigang: "How to get smooth horizon with channel group ?"

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