Extrema_EPCOfExtPC Class Reference

#include <Extrema_EPCOfExtPC.hxx>

Public Member Functions
	Extrema_EPCOfExtPC ()
	Extrema_EPCOfExtPC (const gp_Pnt &P, const Adaptor3d_Curve &C, const Standard_Integer NbU, const Standard_Real TolU, const Standard_Real TolF)
	It calculates all the distances. The function F(u)=distance(P,C(u)) has an extremum when g(u)=dF/du=0. The algorithm searches all the zeros inside the definition range of the curve. NbU is used to locate the close points to find the zeros. Tol and TolU are used to decide to stop the iterations according to the following condition: if n is the number of iterations, abs(Un-Un-1) < TolU and abs(F(Un)-F(Un-1)) < Tol.
	Extrema_EPCOfExtPC (const gp_Pnt &P, const Adaptor3d_Curve &C, const Standard_Integer NbU, const Standard_Real Umin, const Standard_Real Usup, const Standard_Real TolU, const Standard_Real TolF)
	It calculates all the distances. The function F(u)=distance(P,C(u)) has an extremum when g(u)=dF/du=0. The algorithm searches all the zeros inside the definition range of the curve. NbU is used to locate the close points to find the zeros. Zeros are searched between umin and usup. Tol and TolU are used to decide to stop the iterations according to the following condition: if n is the number of iterations, abs(Un-Un-1) < TolU and abs(F(Un)-F(Un-1)) < Tol.
void	Initialize (const Adaptor3d_Curve &C, const Standard_Integer NbU, const Standard_Real TolU, const Standard_Real TolF)
	sets the fields of the algorithm.
void	Initialize (const Adaptor3d_Curve &C, const Standard_Integer NbU, const Standard_Real Umin, const Standard_Real Usup, const Standard_Real TolU, const Standard_Real TolF)
	sets the fields of the algorithm.
void	Initialize (const Adaptor3d_Curve &C)
	sets the fields of the algorithm.
void	Initialize (const Standard_Integer NbU, const Standard_Real Umin, const Standard_Real Usup, const Standard_Real TolU, const Standard_Real TolF)
	sets the fields of the algorithm.
void	Perform (const gp_Pnt &P)
	the algorithm is done with the point P. An exception is raised if the fields have not been initialized.
Standard_Boolean	IsDone () const
	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 extremum square distance.
Standard_Boolean	IsMin (const Standard_Integer N) const
	Returns True if the Nth extremum distance is a minimum.
const Extrema_POnCurv &	Point (const Standard_Integer N) const
	Returns the point of the Nth extremum distance.

Constructor & Destructor Documentation

Extrema_EPCOfExtPC() [1/3]

Extrema_EPCOfExtPC::Extrema_EPCOfExtPC

(

)

Extrema_EPCOfExtPC() [2/3]

Extrema_EPCOfExtPC::Extrema_EPCOfExtPC	(	const gp_Pnt &	P,
		const Adaptor3d_Curve &	C,
		const Standard_Integer	NbU,
		const Standard_Real	TolU,
		const Standard_Real	TolF
	)

It calculates all the distances. The function F(u)=distance(P,C(u)) has an extremum when g(u)=dF/du=0. The algorithm searches all the zeros inside the definition range of the curve. NbU is used to locate the close points to find the zeros. Tol and TolU are used to decide to stop the iterations according to the following condition: if n is the number of iterations, abs(Un-Un-1) < TolU and abs(F(Un)-F(Un-1)) < Tol.

Extrema_EPCOfExtPC() [3/3]

Extrema_EPCOfExtPC::Extrema_EPCOfExtPC	(	const gp_Pnt &	P,
		const Adaptor3d_Curve &	C,
		const Standard_Integer	NbU,
		const Standard_Real	Umin,
		const Standard_Real	Usup,
		const Standard_Real	TolU,
		const Standard_Real	TolF
	)

It calculates all the distances. The function F(u)=distance(P,C(u)) has an extremum when g(u)=dF/du=0. The algorithm searches all the zeros inside the definition range of the curve. NbU is used to locate the close points to find the zeros. Zeros are searched between umin and usup. Tol and TolU are used to decide to stop the iterations according to the following condition: if n is the number of iterations, abs(Un-Un-1) < TolU and abs(F(Un)-F(Un-1)) < Tol.

Member Function Documentation

Initialize() [1/4]

void Extrema_EPCOfExtPC::Initialize

(

const Adaptor3d_Curve &

C

)

sets the fields of the algorithm.

Initialize() [2/4]

void Extrema_EPCOfExtPC::Initialize	(	const Adaptor3d_Curve &	C,
		const Standard_Integer	NbU,
		const Standard_Real	TolU,
		const Standard_Real	TolF
	)

sets the fields of the algorithm.

Initialize() [3/4]

void Extrema_EPCOfExtPC::Initialize	(	const Adaptor3d_Curve &	C,
		const Standard_Integer	NbU,
		const Standard_Real	Umin,
		const Standard_Real	Usup,
		const Standard_Real	TolU,
		const Standard_Real	TolF
	)

sets the fields of the algorithm.

Initialize() [4/4]

void Extrema_EPCOfExtPC::Initialize	(	const Standard_Integer	NbU,
		const Standard_Real	Umin,
		const Standard_Real	Usup,
		const Standard_Real	TolU,
		const Standard_Real	TolF
	)

sets the fields of the algorithm.

IsDone()

Standard_Boolean Extrema_EPCOfExtPC::IsDone

(

)

const

True if the distances are found.

IsMin()

Standard_Boolean Extrema_EPCOfExtPC::IsMin

(

const Standard_Integer

N

)

const

Returns True if the Nth extremum distance is a minimum.

NbExt()

Standard_Integer Extrema_EPCOfExtPC::NbExt

(

)

const

Returns the number of extremum distances.

Perform()

void Extrema_EPCOfExtPC::Perform

(

const gp_Pnt &

P

)

the algorithm is done with the point P. An exception is raised if the fields have not been initialized.

Point()

const Extrema_POnCurv & Extrema_EPCOfExtPC::Point

(

const Standard_Integer

N

)

const

Returns the point of the Nth extremum distance.

SquareDistance()

Standard_Real Extrema_EPCOfExtPC::SquareDistance

(

const Standard_Integer

N

)

const

Returns the value of the Nth extremum square distance.

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

• Extrema_EPCOfExtPC.hxx