BspCrvEvalCoxDeBoor
Section: C Library Functions (3)
Updated: IRIT Version 6.0
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NAME
BspCrvEvalCoxDeBoor()
SYNOPSIS
cagd_lib/bspcoxdb.c:41
CagdRType *BspCrvEvalCoxDeBoor(CagdCrvStruct *Crv, CagdRType t)
DESCRIPTION
Returns a pointer to a static data, holding the value of the curve at
the prescribed parametric location t.
Uses the recursive Cox de-Boor algorithm, to evaluate the spline, which
is not very efficient if many evaluations of the same curve are necessary
Use knot insertion when multiple evaluations are to be performed.
PARAMETERS:
Crv: To evaluate at the given parametric location t.
t: The parameter value at which the curve Crv is to be evaluated.
FUNCTION RETURN VALUE
CagdRType *: A vector holding all the coefficients of all components
of curve Crv's point type. If for example the curve's
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
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- DESCRIPTION
-
- PARAMETERS:
-
- FUNCTION RETURN VALUE
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- ORIGIN
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