Open CASCADE Technology  7.7.0.dev
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. More...

#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 . More...
 
 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 . More...
 
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. More...
 
void Perform (const gp_Pnt &P)
 Computes the distances. An exception is raised if the fieds have not been initialized. More...
 
Standard_Boolean IsDone () const
 Returns True if the distances are found. More...
 
Standard_Integer NbExt () const
 Returns the number of extremum distances. More...
 
Standard_Real SquareDistance (const Standard_Integer N) const
 Returns the value of the Nth resulting square distance. More...
 
const Extrema_POnSurfPoint (const Standard_Integer N) const
 Returns the point of the Nth resulting distance. More...
 
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 More...
 
void SetFlag (const Extrema_ExtFlag F)
 
void SetAlgo (const Extrema_ExtAlgo A)
 

Detailed Description

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

Constructor & Destructor Documentation

◆ Extrema_ExtPS() [1/3]

Extrema_ExtPS::Extrema_ExtPS ( )

◆ Extrema_ExtPS() [2/3]

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() [3/3]

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 
)

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 .

Member Function Documentation

◆ Initialize()

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 
)

Initializes the fields of the algorithm.

◆ IsDone()

Standard_Boolean Extrema_ExtPS::IsDone ( ) const

Returns True if the distances are found.

◆ NbExt()

Standard_Integer Extrema_ExtPS::NbExt ( ) const

Returns the number of extremum distances.

◆ Perform()

void Extrema_ExtPS::Perform ( const gp_Pnt P)

Computes the distances. An exception is raised if the fieds have not been initialized.

◆ Point()

const Extrema_POnSurf& Extrema_ExtPS::Point ( const Standard_Integer  N) const

Returns the point of the Nth resulting distance.

◆ SetAlgo()

void Extrema_ExtPS::SetAlgo ( const Extrema_ExtAlgo  A)

◆ SetFlag()

void Extrema_ExtPS::SetFlag ( const Extrema_ExtFlag  F)

◆ SquareDistance()

Standard_Real Extrema_ExtPS::SquareDistance ( const Standard_Integer  N) const

Returns the value of the Nth resulting square distance.

◆ TrimmedSquareDistances()

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

if the surface is a trimmed surface, dUfVf is a square distance between

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: