Re: pfPtInFrust

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Jim Helman (jimh++at++surreal)
Sun, 19 Feb 95 12:20:50 -0800

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In reply to: Jim Helman: "Re: shared memory segment"

The current pfFrustum implementation does not retain a copy of
the corresponding projection matrix, and generating the matrix
for each point test would be too expensive. Looking at the
nubmer of operations, we could probably speed up the pfPtInFrust
test somewhat by retaining a cached matrix and doing what you
suggest.

rgds,

-jim helman

jimh++at++surreal.asd.sgi.com
415/390-1151

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