TrivBzrTVDegreeRaise

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

TrivBzrTVDegreeRaise()  

SYNOPSIS

triv_lib/trivrais.c:69

TrivTVStruct *TrivBzrTVDegreeRaise(TrivTVStruct *TV, TrivTVDirType Dir)
 

DESCRIPTION

Returns a new Bezier trivariate, identical to the original but with one degree higher, in the requested direction Dir. Let old control polygon be P(i), i = 0 to k-1, and Q(i) be new one then:
                      i            k-i
 Q(0) = P(0), Q(i) = --- P(i-1) + (---) P(i), Q(k) = P(k-1).
                      k             k This is applied to all rows/cols of the trivariate.  

PARAMETERS:

TV: To raise it degree by one.

Dir: Direction of degree raising. Either U, V or W.  

FUNCTION RETURN VALUE

TrivTVStruct *: A surface with one degree higher in direction Dir, representing the same geometry as TV.

 

ORIGIN

(C) Copyright 1989/90-95 Gershon Elber, Technion, IIT


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS:
FUNCTION RETURN VALUE
ORIGIN

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