Approximation of an Surface S(u,v) (and eventually associate 2d Curves) defined by section's law. More...

#include <Approx_SweepApproximation.hxx>

Public Member Functions
	Approx_SweepApproximation (const occ::handle< Approx_SweepFunction > &Func)

void	Perform (const double First, const double Last, const double Tol3d, const double BoundTol, const double Tol2d, const double TolAngular, const GeomAbs_Shape Continuity=GeomAbs_C0, const int Degmax=11, const int Segmax=50)
	Perform the Approximation [First, Last] : Approx_SweepApproximation.cdl Tol3d : Tolerance to surface approximation Tol2d : Tolerance used to perform curve approximation Normally the 2d curve are approximated with a tolerance given by the resolution on support surfaces, but if this tolerance is too large Tol2d is used. TolAngular : Tolerance (in radian) to control the angle between tangents on the section law and tangent of iso-v on approximated surface Continuity : The continuity in v waiting on the surface Degmax : The maximum degree in v required on the surface Segmax : The maximum number of span in v required on the surface Warning : The continuity ci can be obtained only if Ft is Ci.

int	Eval (const double Parameter, const int DerivativeRequest, const double First, const double Last, double &Result)
	The EvaluatorFunction from AdvApprox;.

bool	IsDone () const
	returns if we have an result

void	SurfShape (int &UDegree, int &VDegree, int &NbUPoles, int &NbVPoles, int &NbUKnots, int &NbVKnots) const

void	Surface (NCollection_Array2< gp_Pnt > &TPoles, NCollection_Array2< double > &TWeights, NCollection_Array1< double > &TUKnots, NCollection_Array1< double > &TVKnots, NCollection_Array1< int > &TUMults, NCollection_Array1< int > &TVMults) const

int	UDegree () const

int	VDegree () const

const NCollection_Array2< gp_Pnt > &	SurfPoles () const

const NCollection_Array2< double > &	SurfWeights () const

const NCollection_Array1< double > &	SurfUKnots () const

const NCollection_Array1< double > &	SurfVKnots () const

const NCollection_Array1< int > &	SurfUMults () const

const NCollection_Array1< int > &	SurfVMults () const

double	MaxErrorOnSurf () const
	returns the maximum error in the surface approximation.

double	AverageErrorOnSurf () const
	returns the average error in the surface approximation.

int	NbCurves2d () const

void	Curves2dShape (int &Degree, int &NbPoles, int &NbKnots) const

void	Curve2d (const int Index, NCollection_Array1< gp_Pnt2d > &TPoles, NCollection_Array1< double > &TKnots, NCollection_Array1< int > &TMults) const

int	Curves2dDegree () const

const NCollection_Array1< gp_Pnt2d > &	Curve2dPoles (const int Index) const

const NCollection_Array1< double > &	Curves2dKnots () const

const NCollection_Array1< int > &	Curves2dMults () const

double	Max2dError (const int Index) const
	returns the maximum error of the <Index> 2d curve approximation.

double	Average2dError (const int Index) const
	returns the average error of the <Index> 2d curve approximation.

double	TolCurveOnSurf (const int Index) const
	returns the maximum 3d error of the <Index> 2d curve approximation on the Surface.

void	Dump (Standard_OStream &o) const
	display information on approximation.

Detailed Description

Approximation of an Surface S(u,v) (and eventually associate 2d Curves) defined by section's law.

This surface is defined by a function F(u, v) where Ft(u) = F(u, t) is a bspline curve. To use this algorithm, you have to implement Ft(u) as a derivative class of Approx_SweepFunction. This algorithm can be used by blending, sweeping...

Constructor & Destructor Documentation

◆ Approx_SweepApproximation()

Approx_SweepApproximation::Approx_SweepApproximation ( const occ::handle< Approx_SweepFunction > & Func )

Member Function Documentation

◆ Average2dError()

double Approx_SweepApproximation::Average2dError ( const int Index ) const

returns the average error of the <Index> 2d curve approximation.

◆ AverageErrorOnSurf()

double Approx_SweepApproximation::AverageErrorOnSurf ( ) const

returns the average error in the surface approximation.

◆ Curve2d()

void Approx_SweepApproximation::Curve2d	(	const int	Index,
		NCollection_Array1< gp_Pnt2d > &	TPoles,
		NCollection_Array1< double > &	TKnots,
		NCollection_Array1< int > &	TMults ) const

◆ Curve2dPoles()

const NCollection_Array1< gp_Pnt2d > & Approx_SweepApproximation::Curve2dPoles ( const int Index ) const

◆ Curves2dDegree()

int Approx_SweepApproximation::Curves2dDegree ( ) const

◆ Curves2dKnots()

const NCollection_Array1< double > & Approx_SweepApproximation::Curves2dKnots ( ) const

◆ Curves2dMults()

const NCollection_Array1< int > & Approx_SweepApproximation::Curves2dMults ( ) const

◆ Curves2dShape()

void Approx_SweepApproximation::Curves2dShape	(	int &	Degree,
		int &	NbPoles,
		int &	NbKnots ) const

◆ Dump()

void Approx_SweepApproximation::Dump ( Standard_OStream & o ) const

display information on approximation.

◆ Eval()

int Approx_SweepApproximation::Eval	(	const double	Parameter,
		const int	DerivativeRequest,
		const double	First,
		const double	Last,
		double &	Result )

The EvaluatorFunction from AdvApprox;.

◆ IsDone()

bool Approx_SweepApproximation::IsDone ( ) const

returns if we have an result

◆ Max2dError()

double Approx_SweepApproximation::Max2dError ( const int Index ) const

returns the maximum error of the <Index> 2d curve approximation.

◆ MaxErrorOnSurf()

double Approx_SweepApproximation::MaxErrorOnSurf ( ) const

returns the maximum error in the surface approximation.

◆ NbCurves2d()

int Approx_SweepApproximation::NbCurves2d ( ) const

◆ Perform()

void Approx_SweepApproximation::Perform	(	const double	First,
		const double	Last,
		const double	Tol3d,
		const double	BoundTol,
		const double	Tol2d,
		const double	TolAngular,
		const GeomAbs_Shape	Continuity = GeomAbs_C0,
		const int	Degmax = 11,
		const int	Segmax = 50 )

Perform the Approximation [First, Last] : Approx_SweepApproximation.cdl Tol3d : Tolerance to surface approximation Tol2d : Tolerance used to perform curve approximation Normally the 2d curve are approximated with a tolerance given by the resolution on support surfaces, but if this tolerance is too large Tol2d is used. TolAngular : Tolerance (in radian) to control the angle between tangents on the section law and tangent of iso-v on approximated surface Continuity : The continuity in v waiting on the surface Degmax : The maximum degree in v required on the surface Segmax : The maximum number of span in v required on the surface Warning : The continuity ci can be obtained only if Ft is Ci.

◆ Surface()

void Approx_SweepApproximation::Surface	(	NCollection_Array2< gp_Pnt > &	TPoles,
		NCollection_Array2< double > &	TWeights,
		NCollection_Array1< double > &	TUKnots,
		NCollection_Array1< double > &	TVKnots,
		NCollection_Array1< int > &	TUMults,
		NCollection_Array1< int > &	TVMults ) const

◆ SurfPoles()

const NCollection_Array2< gp_Pnt > & Approx_SweepApproximation::SurfPoles ( ) const

◆ SurfShape()

void Approx_SweepApproximation::SurfShape	(	int &	UDegree,
		int &	VDegree,
		int &	NbUPoles,
		int &	NbVPoles,
		int &	NbUKnots,
		int &	NbVKnots ) const

◆ SurfUKnots()

const NCollection_Array1< double > & Approx_SweepApproximation::SurfUKnots ( ) const

◆ SurfUMults()

const NCollection_Array1< int > & Approx_SweepApproximation::SurfUMults ( ) const

◆ SurfVKnots()

const NCollection_Array1< double > & Approx_SweepApproximation::SurfVKnots ( ) const

◆ SurfVMults()

const NCollection_Array1< int > & Approx_SweepApproximation::SurfVMults ( ) const

◆ SurfWeights()

const NCollection_Array2< double > & Approx_SweepApproximation::SurfWeights ( ) const

◆ TolCurveOnSurf()

double Approx_SweepApproximation::TolCurveOnSurf ( const int Index ) const

returns the maximum 3d error of the <Index> 2d curve approximation on the Surface.

◆ UDegree()

int Approx_SweepApproximation::UDegree ( ) const

◆ VDegree()

int Approx_SweepApproximation::VDegree ( ) const

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

Approx_SweepApproximation.hxx

Public Member Functions