TrivBspTVDerive

Section: C Library Functions (3)
Updated: IRIT Version 6.0
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NAME

TrivBspTVDerive()

SYNOPSIS

triv_lib/triv_der.c:154

TrivTVStruct *TrivBspTVDerive(TrivTVStruct *TV, TrivTVDirType Dir)

DESCRIPTION

Given a Bspline trivariate, computes its partial derivative trivariate in direction Dir. Let old control polygon be P(i), i = 0 to k-1, and Q(i) be new one then:
Q(i) = (k - 1) * (P(i+1) - P(i)) / (Kv(i + k) - Kv(i + 1)), i = 0 to k-2.

PARAMETERS:

TV: Trivariate to differentiate.

Dir: Direction of differentiation. Either U or V or W.

FUNCTION RETURN VALUE

TrivTVStruct *: Differentiated trivariate in direction Dir. A Bspline trivariate.

ORIGIN

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Time: 07:27:13 GMT, October 17, 2022