SymbCrv3DRadiusNormal
Section: C Library Functions (3)
Updated: IRIT Version 6.0
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NAME
SymbCrv3DRadiusNormal()
SYNOPSIS
symb_lib/curvatur.c:203
CagdCrvStruct *SymbCrv3DRadiusNormal(CagdCrvStruct *Crv)
DESCRIPTION
Computes a vector field curve representing the radius (1/curvature) of a
curve, in the normal direction, that is N / k:
. .. . . 6 . .. . . 2
k N (C x C ) x C | C | ( (C x C ) x C ) | C |
N / k = ----- = ------------ . --------- = -----------------------
2 . 4 . .. 2 . .. 2
k | C | (C x C ) (C x C )
PARAMETERS:
Crv: To compute the normal field with radius as magnitude.
FUNCTION RETURN VALUE
CagdCrvStruct *: Computed normal field with 1 / k as magnitude.
SEE ALSO
SymbCrv2DCurvatureSqr,
SymbCrv3DCurvatureSqr,
SymbCrv3DCurvatureSqr,
,
SymbCrv3DCurvatureNormal,
SymbCrv2DCurvatureSign,
,
SymbCrv2DInflectionPts,
SymbCrv2DExtremCrvtrPts,
ORIGIN
(C) Copyright 1989/90-95 Gershon Elber, Technion, IIT
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- PARAMETERS:
-
- FUNCTION RETURN VALUE
-
- SEE ALSO
-
- ORIGIN
-
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