TrivTVEval
Section: C Library Functions (3)
Updated: IRIT Version 6.0
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NAME
TrivTVEval()
SYNOPSIS
triv_lib/triveval.c:44
CagdRType *TrivTVEval(TrivTVStruct *TV, CagdRType u, CagdRType v, CagdRType w)
DESCRIPTION
Evaluates the given tensor product trivariate at a given point, by
extracting an isoparamteric surface along w and evaluating (u,v) in it.
+-----------------------+
W / /|
/ / / |
/ / U --> / | Orientation of
+-----------------------+ | control tri-variate mesh.
V | |P0 Pi-1| +
v |Pi P2i-1| /
| | /
|Pn-i Pn-1|/
+-----------------------+
PARAMETERS:
TV: To evaluate at given (u, v, w) parametric location.
u, v, w: Parametric location to evaluate TV at.
FUNCTION RETURN VALUE
CagdRType *: A vector holding all the coefficients of all components
of the trivariate's point type. If for example trivariate
point type is P2, the W, X, and Y will be saved in the
first three locations of the returned vector. The first
location (index 0) of the returned vector is reserved for
the rational coefficient W and XYZ always starts at second
location of the returned vector (index 1).
ORIGIN
(C) Copyright 1989/90-95 Gershon Elber, Technion, IIT
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- PARAMETERS:
-
- FUNCTION RETURN VALUE
-
- ORIGIN
-
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