SymbSrfMeanEvolute
Section: C Library Functions (3)
Updated: IRIT Version 6.0
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NAME
SymbSrfMeanEvolute()
SYNOPSIS
symb_lib/curvatur.c:770
CagdSrfStruct *SymbSrfMeanEvolute(CagdSrfStruct *Srf)
DESCRIPTION
Computes an "evolute surface" to a given surface using twice the Mean
curvature as magnitude.
1 |G|
E(u, v) = n(u, v) --------- = n(u, v) ---------------------------------
2 H(u, v) ( G11 L22 + G22 L11 - 2 G12 L12 )
Becuase H(u,v) also has n(u,v) we can use the nonnormalized surface normal
to compute E(u, v), which is therefore computable and representable.
PARAMETERS:
Srf: Surface to compute mean evolute.
FUNCTION RETURN VALUE
CagdSrfStruct *: A surface representing the mean evolute surface.
SEE ALSO
SymbSrfFff,
SymbSrfSff,
SymbSrf2DDeterminant,
SymbSrfGaussCurvature,
,
SymbSrfMeanCurvatureSqr,
SymbSrfIsoFocalSrf,
SymbSrfCurvatureUpperBound,
,
SymbSrfIsoDirNormalCurvatureBound,
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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