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 double TolU, const double 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 double Uinf, const double Usup, const double Vinf, const double Vsup, const double TolU, const double 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 double Uinf, const double Usup, const double Vinf, const double Vsup, const double TolU, const double TolV)
	Initializes the fields of the algorithm.
void	Perform (const gp_Pnt &P)
	Computes the distances. An exception is raised if the fields have not been initialized.
bool	IsDone () const
	Returns True if the distances are found.
int	NbExt () const
	Returns the number of extremum distances.
double	SquareDistance (const int N) const
	Returns the value of the Nth resulting square distance.
const Extrema_POnSurf &	Point (const int N) const
	Returns the point of the Nth resulting distance.
void	TrimmedSquareDistances (double &dUfVf, double &dUfVl, double &dUlVf, double &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)

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 double	TolU,
		const double	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 double	Uinf,
		const double	Usup,
		const double	Vinf,
		const double	Vsup,
		const double	TolU,
		const double	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 double	Uinf,
		const double	Usup,
		const double	Vinf,
		const double	Vsup,
		const double	TolU,
		const double	TolV )

Initializes the fields of the algorithm.

IsDone()

bool Extrema_ExtPS::IsDone

(

)

const

Returns True if the distances are found.

NbExt()

int 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 fields have not been initialized.

Point()

const Extrema_POnSurf & Extrema_ExtPS::Point

(

const int

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()

double Extrema_ExtPS::SquareDistance

(

const int

N

)

const

Returns the value of the Nth resulting square distance.

TrimmedSquareDistances()

void Extrema_ExtPS::TrimmedSquareDistances	(	double &	dUfVf,
		double &	dUfVl,
		double &	dUlVf,
		double &	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>.

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

• Extrema_ExtPS.hxx