SymbCrv3DRadiusNormal

Section: C Library Functions (3)
Updated: IRIT Version 6.0
Index Return to Main Contents
 

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

This document was created by man2html, using the manual pages.
Time: 07:27:11 GMT, October 17, 2022