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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