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snrmlsrf.6
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1996-07-16
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521b
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.TH SNRMLSRF
6 "IRIT Version 6.0"
.SH NAME
SNRMLSRF
SurfaceType SNRMLSRF( SurfaceType Srf )
Symbolically computes a vector field surface representing the non-normalized
normals of the given surface. That is the normal surface, evaluated at
(u, v), provides a vector in the direction of the normal of the original
surface at (u, v). The normal surface is computed as the symbolic cross
product of the two surfaces representing the partial derivatives of the
original surface.
Example:
NrmlSrf = SNRMLSRF( Srf );