Open CASCADE Technology 6.6.0
Public Member Functions
Extrema_ExtPS Class Reference

It calculates all the extremum distances
between a point and a surface.
These distances can be minimum or maximum.

#include <Extrema_ExtPS.hxx>

Public Member Functions

 Extrema_ExtPS ()
 Extrema_ExtPS (const gp_Pnt &P, const Adaptor3d_Surface &S, const Standard_Real TolU, const Standard_Real TolV, const Extrema_ExtFlag F=Extrema_ExtFlag_MINMAX, const Extrema_ExtAlgo A=Extrema_ExtAlgo_Grad)
 It calculates all the distances.
NbU and NbV are used to locate the close points
to find the zeros. They must be great enough
such that if there is N extrema, there will
be N extrema between P and the grid.
TolU et TolV are used to determine the conditions
to stop the iterations; at the iteration number n:
(Un - Un-1) < TolU and (Vn - Vn-1) < TolV .

 Extrema_ExtPS (const gp_Pnt &P, const Adaptor3d_Surface &S, const Standard_Real Uinf, const Standard_Real Usup, const Standard_Real Vinf, const Standard_Real Vsup, const Standard_Real TolU, const Standard_Real TolV, const Extrema_ExtFlag F=Extrema_ExtFlag_MINMAX, const Extrema_ExtAlgo A=Extrema_ExtAlgo_Grad)
 It calculates all the distances.
NbU and NbV are used to locate the close points
to find the zeros. They must be great enough
such that if there is N extrema, there will
be N extrema between P and the grid.
TolU et TolV are used to determine the conditions
to stop the iterations; at the iteration number n:
(Un - Un-1) < TolU and (Vn - Vn-1) < TolV .

void Initialize (const Adaptor3d_Surface &S, const Standard_Real Uinf, const Standard_Real Usup, const Standard_Real Vinf, const Standard_Real Vsup, const Standard_Real TolU, const Standard_Real TolV)
 Initializes the fields of the algorithm.

void Perform (const gp_Pnt &P)
 Computes the distances.
An exception is raised if the fieds have not been
initialized.

Standard_Boolean IsDone () const
 Returns True if the distances are found.

Standard_Integer NbExt () const
 Returns the number of extremum distances.

Standard_Real SquareDistance (const Standard_Integer N) const
 Returns the value of the Nth resulting square distance.

Extrema_POnSurf Point (const Standard_Integer N) const
 Returns the point of the Nth resulting distance.

void TrimmedSquareDistances (Standard_Real &dUfVf, Standard_Real &dUfVl, Standard_Real &dUlVf, Standard_Real &dUlVl, gp_Pnt &PUfVf, gp_Pnt &PUfVl, gp_Pnt &PUlVf, gp_Pnt &PUlVl) const
 if the surface is a trimmed surface,
dUfVf is a square distance between
void SetFlag (const Extrema_ExtFlag F)
void SetAlgo (const Extrema_ExtAlgo A)

Constructor & Destructor Documentation

Extrema_ExtPS::Extrema_ExtPS ( )
Extrema_ExtPS::Extrema_ExtPS ( const gp_Pnt P,
const Adaptor3d_Surface S,
const Standard_Real  TolU,
const Standard_Real  TolV,
const Extrema_ExtFlag  F = Extrema_ExtFlag_MINMAX,
const Extrema_ExtAlgo  A = Extrema_ExtAlgo_Grad 
)
Extrema_ExtPS::Extrema_ExtPS ( const gp_Pnt P,
const Adaptor3d_Surface S,
const Standard_Real  Uinf,
const Standard_Real  Usup,
const Standard_Real  Vinf,
const Standard_Real  Vsup,
const Standard_Real  TolU,
const Standard_Real  TolV,
const Extrema_ExtFlag  F = Extrema_ExtFlag_MINMAX,
const Extrema_ExtAlgo  A = Extrema_ExtAlgo_Grad 
)

Member Function Documentation

void Extrema_ExtPS::Initialize ( const Adaptor3d_Surface S,
const Standard_Real  Uinf,
const Standard_Real  Usup,
const Standard_Real  Vinf,
const Standard_Real  Vsup,
const Standard_Real  TolU,
const Standard_Real  TolV 
)
Standard_Boolean Extrema_ExtPS::IsDone ( ) const
Standard_Integer Extrema_ExtPS::NbExt ( ) const
void Extrema_ExtPS::Perform ( const gp_Pnt P)
Extrema_POnSurf Extrema_ExtPS::Point ( const Standard_Integer  N) const
void Extrema_ExtPS::SetAlgo ( const Extrema_ExtAlgo  A)
void Extrema_ExtPS::SetFlag ( const Extrema_ExtFlag  F)
Standard_Real Extrema_ExtPS::SquareDistance ( const Standard_Integer  N) const
void Extrema_ExtPS::TrimmedSquareDistances ( Standard_Real dUfVf,
Standard_Real dUfVl,
Standard_Real dUlVf,
Standard_Real dUlVl,
gp_Pnt PUfVf,
gp_Pnt PUfVl,
gp_Pnt PUlVf,
gp_Pnt PUlVl 
) const

and the point
of parameter FirstUParameter and FirstVParameter <PUfVf>.
dUfVl is a square distance between

and the point
of parameter FirstUParameter and LastVParameter <PUfVl>.
dUlVf is a square distance between

and the point
of parameter LastUParameter and FirstVParameter <PUlVf>.
dUlVl is a square distance between

and the point
of parameter LastUParameter and LastVParameter <PUlVl>.


The documentation for this class was generated from the following file:
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