Circular Blend Function to approximate by SweepApproximation from Approx. More...

#include <GeomFill_CircularBlendFunc.hxx>

Inheritance diagram for GeomFill_CircularBlendFunc:

Public Member Functions
	GeomFill_CircularBlendFunc (const Handle< Adaptor3d_Curve > &Path, const Handle< Adaptor3d_Curve > &Curve1, const Handle< Adaptor3d_Curve > &Curve2, const Standard_Real Radius, const Standard_Boolean Polynomial=Standard_False)
	Create a Blend with a constant radius with 2 guide-line. <FShape> sets the type of fillet surface. The – default value is Convert_TgtThetaOver2 (classical – nurbs – representation of circles). ChFi3d_QuasiAngular – corresponds to a nurbs representation of circles – which parameterisation matches the circle one. – ChFi3d_Polynomial corresponds to a polynomial – representation of circles.

virtual Standard_Boolean	D0 (const Standard_Real Param, const Standard_Real First, const Standard_Real Last, TColgp_Array1OfPnt &Poles, TColgp_Array1OfPnt2d &Poles2d, TColStd_Array1OfReal &Weigths) override
	compute the section for v = param

virtual Standard_Boolean	D1 (const Standard_Real Param, const Standard_Real First, const Standard_Real Last, TColgp_Array1OfPnt &Poles, TColgp_Array1OfVec &DPoles, TColgp_Array1OfPnt2d &Poles2d, TColgp_Array1OfVec2d &DPoles2d, TColStd_Array1OfReal &Weigths, TColStd_Array1OfReal &DWeigths) override
	compute the first derivative in v direction of the section for v = param

virtual Standard_Boolean	D2 (const Standard_Real Param, const Standard_Real First, const Standard_Real Last, TColgp_Array1OfPnt &Poles, TColgp_Array1OfVec &DPoles, TColgp_Array1OfVec &D2Poles, TColgp_Array1OfPnt2d &Poles2d, TColgp_Array1OfVec2d &DPoles2d, TColgp_Array1OfVec2d &D2Poles2d, TColStd_Array1OfReal &Weigths, TColStd_Array1OfReal &DWeigths, TColStd_Array1OfReal &D2Weigths) override
	compute the second derivative in v direction of the section for v = param

virtual Standard_Integer	Nb2dCurves () const override
	get the number of 2d curves to approximate.

virtual void	SectionShape (Standard_Integer &NbPoles, Standard_Integer &NbKnots, Standard_Integer &Degree) const override
	get the format of an section

virtual void	Knots (TColStd_Array1OfReal &TKnots) const override
	get the Knots of the section

virtual void	Mults (TColStd_Array1OfInteger &TMults) const override
	get the Multplicities of the section

virtual Standard_Boolean	IsRational () const override
	Returns if the section is rationnal or not.

virtual Standard_Integer	NbIntervals (const GeomAbs_Shape S) const override
	Returns the number of intervals for continuity ~~. May be one if Continuity(me) >=~~

virtual void	Intervals (TColStd_Array1OfReal &T, const GeomAbs_Shape S) const override
	Stores in <T> the parameters bounding the intervals of continuity .

virtual void	SetInterval (const Standard_Real First, const Standard_Real Last) override
	Sets the bounds of the parametric interval on the fonction This determines the derivatives in these values if the function is not Cn.

virtual void	GetTolerance (const Standard_Real BoundTol, const Standard_Real SurfTol, const Standard_Real AngleTol, TColStd_Array1OfReal &Tol3d) const override
	Returns the tolerance to reach in approximation to respecte BoundTol error at the Boundary AngleTol tangent error at the Boundary (in radian) SurfTol error inside the surface.

virtual void	SetTolerance (const Standard_Real Tol3d, const Standard_Real Tol2d) override
	Is usfull, if (me) have to be run numerical algorithme to perform D0, D1 or D2.

virtual gp_Pnt	BarycentreOfSurf () const override
	Get the barycentre of Surface. An very poor estimation is sufficient. This information is useful to perform well conditioned rational approximation.

virtual Standard_Real	MaximalSection () const override
	Returns the length of the maximum section. This information is useful to perform well conditioned rational approximation.

virtual void	GetMinimalWeight (TColStd_Array1OfReal &Weigths) const override
	Compute the minimal value of weight for each poles of all sections. This information is useful to perform well conditioned rational approximation.

Public Member Functions inherited from Approx_SweepFunction
virtual void	Resolution (const Standard_Integer Index, const Standard_Real Tol, Standard_Real &TolU, Standard_Real &TolV) const
	Returns the resolutions in the sub-space 2d <Index> This information is usfull to find an good tolerance in 2d approximation.

Public Member Functions inherited from Standard_Transient
	Standard_Transient ()
	Empty constructor.

	Standard_Transient (const Standard_Transient &)
	Copy constructor – does nothing.

Standard_Transient &	operator= (const Standard_Transient &)
	Assignment operator, needed to avoid copying reference counter.

virtual	~Standard_Transient ()
	Destructor must be virtual.

virtual const opencascade::handle< Standard_Type > &	DynamicType () const
	Returns a type descriptor about this object.

Standard_Boolean	IsInstance (const opencascade::handle< Standard_Type > &theType) const
	Returns a true value if this is an instance of Type.

Standard_Boolean	IsInstance (const Standard_CString theTypeName) const
	Returns a true value if this is an instance of TypeName.

Standard_Boolean	IsKind (const opencascade::handle< Standard_Type > &theType) const
	Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism.

Standard_Boolean	IsKind (const Standard_CString theTypeName) const
	Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism.

Standard_Transient *	This () const
	Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero.

Standard_Integer	GetRefCount () const noexcept
	Get the reference counter of this object.

void	IncrementRefCounter () noexcept
	Increments the reference counter of this object.

Standard_Integer	DecrementRefCounter () noexcept
	Decrements the reference counter of this object; returns the decremented value.

virtual void	Delete () const
	Memory deallocator for transient classes.

Additional Inherited Members
Public Types inherited from Standard_Transient
typedef void	base_type
	Returns a type descriptor about this object.

Static Public Member Functions inherited from Standard_Transient
static constexpr const char *	get_type_name ()
	Returns a type descriptor about this object.

static const opencascade::handle< Standard_Type > &	get_type_descriptor ()
	Returns type descriptor of Standard_Transient class.

Detailed Description

Circular Blend Function to approximate by SweepApproximation from Approx.

Constructor & Destructor Documentation

◆ GeomFill_CircularBlendFunc()

GeomFill_CircularBlendFunc::GeomFill_CircularBlendFunc	(	const Handle< Adaptor3d_Curve > &	Path,
		const Handle< Adaptor3d_Curve > &	Curve1,
		const Handle< Adaptor3d_Curve > &	Curve2,
		const Standard_Real	Radius,
		const Standard_Boolean	Polynomial = `Standard_False`
	)

Create a Blend with a constant radius with 2 guide-line. <FShape> sets the type of fillet surface. The – default value is Convert_TgtThetaOver2 (classical – nurbs – representation of circles). ChFi3d_QuasiAngular – corresponds to a nurbs representation of circles – which parameterisation matches the circle one. – ChFi3d_Polynomial corresponds to a polynomial – representation of circles.

Member Function Documentation

◆ BarycentreOfSurf()

virtual gp_Pnt GeomFill_CircularBlendFunc::BarycentreOfSurf ( ) const

overridevirtual

Get the barycentre of Surface. An very poor estimation is sufficient. This information is useful to perform well conditioned rational approximation.

Reimplemented from Approx_SweepFunction.

◆ D0()

virtual Standard_Boolean GeomFill_CircularBlendFunc::D0	(	const Standard_Real	Param,
		const Standard_Real	First,
		const Standard_Real	Last,
		TColgp_Array1OfPnt &	Poles,
		TColgp_Array1OfPnt2d &	Poles2d,
		TColStd_Array1OfReal &	Weigths
	)

overridevirtual

compute the section for v = param

Implements Approx_SweepFunction.

◆ D1()

virtual Standard_Boolean GeomFill_CircularBlendFunc::D1	(	const Standard_Real	Param,
		const Standard_Real	First,
		const Standard_Real	Last,
		TColgp_Array1OfPnt &	Poles,
		TColgp_Array1OfVec &	DPoles,
		TColgp_Array1OfPnt2d &	Poles2d,
		TColgp_Array1OfVec2d &	DPoles2d,
		TColStd_Array1OfReal &	Weigths,
		TColStd_Array1OfReal &	DWeigths
	)

overridevirtual

compute the first derivative in v direction of the section for v = param

Reimplemented from Approx_SweepFunction.

◆ D2()

virtual Standard_Boolean GeomFill_CircularBlendFunc::D2	(	const Standard_Real	Param,
		const Standard_Real	First,
		const Standard_Real	Last,
		TColgp_Array1OfPnt &	Poles,
		TColgp_Array1OfVec &	DPoles,
		TColgp_Array1OfVec &	D2Poles,
		TColgp_Array1OfPnt2d &	Poles2d,
		TColgp_Array1OfVec2d &	DPoles2d,
		TColgp_Array1OfVec2d &	D2Poles2d,
		TColStd_Array1OfReal &	Weigths,
		TColStd_Array1OfReal &	DWeigths,
		TColStd_Array1OfReal &	D2Weigths
	)

overridevirtual

compute the second derivative in v direction of the section for v = param

Reimplemented from Approx_SweepFunction.

◆ GetMinimalWeight()

virtual void GeomFill_CircularBlendFunc::GetMinimalWeight ( TColStd_Array1OfReal & Weigths ) const

overridevirtual

Compute the minimal value of weight for each poles of all sections. This information is useful to perform well conditioned rational approximation.

Reimplemented from Approx_SweepFunction.

◆ GetTolerance()

virtual void GeomFill_CircularBlendFunc::GetTolerance	(	const Standard_Real	BoundTol,
		const Standard_Real	SurfTol,
		const Standard_Real	AngleTol,
		TColStd_Array1OfReal &	Tol3d
	)		const

overridevirtual

Returns the tolerance to reach in approximation to respecte BoundTol error at the Boundary AngleTol tangent error at the Boundary (in radian) SurfTol error inside the surface.

Implements Approx_SweepFunction.