SymbCrv2DCurvatureSqr

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

SymbCrv2DCurvatureSqr()  

SYNOPSIS

symb_lib/curvatur.c:41

CagdCrvStruct *SymbCrv2DCurvatureSqr(CagdCrvStruct *Crv)
 

DESCRIPTION

Computes a scalar curve representing the curvature of a planar curve. The given curve is assumed to be planar and only its x and y coordinates are considered. Then the curvature k is equal to
      .  ..    .  ..
      X  Y  -  Y  X
 k =  -------------
         .2   .2  3/2
      (  X  + Y  ) Since we cannot represent k because of the square root, we compute and represent k^2.  

PARAMETERS:

Crv: To compute the square of teh curvature field for.  

FUNCTION RETURN VALUE

CagdCrvStruct *: The square of the curvature field of Crv.  

SEE ALSO

SymbCrv3DCurvatureSqr, SymbCrv3DRadiusNormal, , 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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