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::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` )

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::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

 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.

 Standard_Boolean Extrema_ExtPS::IsDone ( ) const

Returns True if the distances are found.

 Standard_Integer Extrema_ExtPS::NbExt ( ) const

Returns the number of extremum distances.

 void Extrema_ExtPS::Perform ( const gp_Pnt & P )

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

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

Returns the point of the Nth resulting distance.

 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

Returns the value of the Nth resulting square distance.

 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: