Root class for 2D curves on which geometric algorithms work. An adapted curve is an interface between the services provided by a curve, and those required of the curve by algorithms, which use it. A derived concrete class is provided: Geom2dAdaptor_Curve for a curve from the Geom2d package. More...

#include <Adaptor2d_Curve2d.hxx>

Inheritance diagram for Adaptor2d_Curve2d:

[legend]

Public Member Functions
virtual occ::handle< Adaptor2d_Curve2d >	ShallowCopy () const
	Shallow copy of adaptor.

virtual double	FirstParameter () const

virtual double	LastParameter () const

virtual GeomAbs_Shape	Continuity () const

virtual int	NbIntervals (const GeomAbs_Shape S) const
	If necessary, breaks the curve in intervals of continuity ~~. And returns the number of intervals.~~

virtual void	Intervals (NCollection_Array1< double > &T, const GeomAbs_Shape S) const
	Stores in <T> the parameters bounding the intervals of continuity .

virtual occ::handle< Adaptor2d_Curve2d >	Trim (const double First, const double Last, const double Tol) const
	Returns a curve equivalent of <me> between parameters <First> and <Last>. <Tol> is used to test for 3d points confusion. If <First> >= <Last>

virtual bool	IsClosed () const

virtual bool	IsPeriodic () const

virtual double	Period () const

virtual gp_Pnt2d	Value (const double U) const
	Computes the point of parameter U on the curve.

virtual void	D0 (const double U, gp_Pnt2d &P) const
	Computes the point of parameter U on the curve.

virtual void	D1 (const double U, gp_Pnt2d &P, gp_Vec2d &V) const
	Computes the point of parameter U on the curve with its first derivative. Raised if the continuity of the current interval is not C1.

virtual void	D2 (const double U, gp_Pnt2d &P, gp_Vec2d &V1, gp_Vec2d &V2) const
	Returns the point P of parameter U, the first and second derivatives V1 and V2. Raised if the continuity of the current interval is not C2.

virtual void	D3 (const double U, gp_Pnt2d &P, gp_Vec2d &V1, gp_Vec2d &V2, gp_Vec2d &V3) const
	Returns the point P of parameter U, the first, the second and the third derivative. Raised if the continuity of the current interval is not C3.

virtual gp_Vec2d	DN (const double U, const int N) const
	The returned vector gives the value of the derivative for the order of derivation N. Raised if the continuity of the current interval is not CN. Raised if N < 1.

virtual double	Resolution (const double R3d) const
	Returns the parametric resolution corresponding to the real space resolution <R3d>.

virtual GeomAbs_CurveType	GetType () const
	Returns the type of the curve in the current interval: Line, Circle, Ellipse, Hyperbola, Parabola, BezierCurve, BSplineCurve, OtherCurve.

virtual gp_Lin2d	Line () const

virtual gp_Circ2d	Circle () const

virtual gp_Elips2d	Ellipse () const

virtual gp_Hypr2d	Hyperbola () const

virtual gp_Parab2d	Parabola () const

virtual int	Degree () const

virtual bool	IsRational () const

virtual int	NbPoles () const

virtual int	NbKnots () const

virtual int	NbSamples () const

virtual occ::handle< Geom2d_BezierCurve >	Bezier () const

virtual occ::handle< Geom2d_BSplineCurve >	BSpline () const

virtual gp_Pnt2d	EvalD0 (const double theU) const
	Computes the point of parameter U on the curve. Raises an exception on failure.

virtual Geom2d_Curve::ResD1	EvalD1 (const double theU) const
	Computes the point and first derivative at parameter U. Raises an exception on failure.

virtual Geom2d_Curve::ResD2	EvalD2 (const double theU) const
	Computes the point and first two derivatives at parameter U. Raises an exception on failure.

virtual Geom2d_Curve::ResD3	EvalD3 (const double theU) const
	Computes the point and first three derivatives at parameter U. Raises an exception on failure.

virtual gp_Vec2d	EvalDN (const double theU, const int theN) const
	Computes the Nth derivative at parameter U. Raises an exception on failure.

	~Adaptor2d_Curve2d () override

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 ()=default
	Destructor must be virtual.

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

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

bool	IsInstance (const char *const theTypeName) const
	Returns a true value if this is an instance of TypeName.

bool	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.

bool	IsKind (const char *const 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.

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

void	IncrementRefCounter () noexcept
	Increments the reference counter of this object. Uses relaxed memory ordering since incrementing only requires atomicity, not synchronization with other memory operations.

int	DecrementRefCounter () noexcept
	Decrements the reference counter of this object; returns the decremented value. Uses release ordering for the decrement to ensure all writes to the object are visible before the count reaches zero. An acquire fence is added only when the count reaches zero, ensuring proper synchronization before deletion. This is more efficient than using acq_rel for every decrement.

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

Root class for 2D curves on which geometric algorithms work. An adapted curve is an interface between the services provided by a curve, and those required of the curve by algorithms, which use it. A derived concrete class is provided: Geom2dAdaptor_Curve for a curve from the Geom2d package.

Polynomial coefficients of BSpline curves used for their evaluation are cached for better performance. Therefore these evaluations are not thread-safe and parallel evaluations need to be prevented.

Constructor & Destructor Documentation

◆ ~Adaptor2d_Curve2d()

Adaptor2d_Curve2d::~Adaptor2d_Curve2d ( )

override

Member Function Documentation

◆ Bezier()

virtual occ::handle< Geom2d_BezierCurve > Adaptor2d_Curve2d::Bezier ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and ProjLib_ProjectedCurve.

◆ BSpline()

virtual occ::handle< Geom2d_BSplineCurve > Adaptor2d_Curve2d::BSpline ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and ProjLib_ProjectedCurve.

◆ Circle()

virtual gp_Circ2d Adaptor2d_Curve2d::Circle ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and ProjLib_ProjectedCurve.

◆ Continuity()

virtual GeomAbs_Shape Adaptor2d_Curve2d::Continuity ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, ProjLib_CompProjectedCurve, and ProjLib_ProjectedCurve.

◆ D0()

virtual void Adaptor2d_Curve2d::D0	(	const double	U,
		gp_Pnt2d &	P ) const

virtual

Computes the point of parameter U on the curve.

Reimplemented in Geom2dAdaptor_Curve, Adaptor2d_OffsetCurve, ProjLib_CompProjectedCurve, ProjLib_ProjectedCurve, and Adaptor2d_Line2d.

◆ D1()

virtual void Adaptor2d_Curve2d::D1	(	const double	U,
		gp_Pnt2d &	P,
		gp_Vec2d &	V ) const

virtual

Computes the point of parameter U on the curve with its first derivative. Raised if the continuity of the current interval is not C1.

Reimplemented in Geom2dAdaptor_Curve, Adaptor2d_OffsetCurve, ProjLib_CompProjectedCurve, ProjLib_ProjectedCurve, and Adaptor2d_Line2d.

◆ D2()

virtual void Adaptor2d_Curve2d::D2	(	const double	U,
		gp_Pnt2d &	P,
		gp_Vec2d &	V1,
		gp_Vec2d &	V2 ) const

virtual

Returns the point P of parameter U, the first and second derivatives V1 and V2. Raised if the continuity of the current interval is not C2.

Reimplemented in Geom2dAdaptor_Curve, Adaptor2d_OffsetCurve, ProjLib_CompProjectedCurve, ProjLib_ProjectedCurve, and Adaptor2d_Line2d.

◆ D3()

virtual void Adaptor2d_Curve2d::D3	(	const double	U,
		gp_Pnt2d &	P,
		gp_Vec2d &	V1,
		gp_Vec2d &	V2,
		gp_Vec2d &	V3 ) const

virtual

Returns the point P of parameter U, the first, the second and the third derivative. Raised if the continuity of the current interval is not C3.

Reimplemented in Geom2dAdaptor_Curve, Adaptor2d_OffsetCurve, ProjLib_ProjectedCurve, and Adaptor2d_Line2d.

◆ Degree()

virtual int Adaptor2d_Curve2d::Degree ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and ProjLib_ProjectedCurve.

◆ DN()

virtual gp_Vec2d Adaptor2d_Curve2d::DN	(	const double	U,
		const int	N ) const

virtual

The returned vector gives the value of the derivative for the order of derivation N. Raised if the continuity of the current interval is not CN. Raised if N < 1.

Reimplemented in Geom2dAdaptor_Curve, Adaptor2d_Line2d, Adaptor2d_OffsetCurve, ProjLib_CompProjectedCurve, and ProjLib_ProjectedCurve.

◆ Ellipse()

virtual gp_Elips2d Adaptor2d_Curve2d::Ellipse ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and ProjLib_ProjectedCurve.

◆ EvalD0()

virtual gp_Pnt2d Adaptor2d_Curve2d::EvalD0 ( const double theU ) const

virtual

Computes the point of parameter U on the curve. Raises an exception on failure.

Reimplemented in Geom2dAdaptor_Curve.

◆ EvalD1()

virtual Geom2d_Curve::ResD1 Adaptor2d_Curve2d::EvalD1 ( const double theU ) const

virtual

Computes the point and first derivative at parameter U. Raises an exception on failure.

Reimplemented in Geom2dAdaptor_Curve.

◆ EvalD2()

virtual Geom2d_Curve::ResD2 Adaptor2d_Curve2d::EvalD2 ( const double theU ) const

virtual

Computes the point and first two derivatives at parameter U. Raises an exception on failure.

Reimplemented in Geom2dAdaptor_Curve.

◆ EvalD3()

virtual Geom2d_Curve::ResD3 Adaptor2d_Curve2d::EvalD3 ( const double theU ) const

virtual

Computes the point and first three derivatives at parameter U. Raises an exception on failure.

Reimplemented in Geom2dAdaptor_Curve.

◆ EvalDN()

virtual gp_Vec2d Adaptor2d_Curve2d::EvalDN	(	const double	theU,
		const int	theN ) const

virtual

Computes the Nth derivative at parameter U. Raises an exception on failure.

Reimplemented in Geom2dAdaptor_Curve.

◆ FirstParameter()

virtual double Adaptor2d_Curve2d::FirstParameter ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, ProjLib_CompProjectedCurve, and ProjLib_ProjectedCurve.

◆ GetType()

virtual GeomAbs_CurveType Adaptor2d_Curve2d::GetType ( ) const

virtual

Returns the type of the curve in the current interval: Line, Circle, Ellipse, Hyperbola, Parabola, BezierCurve, BSplineCurve, OtherCurve.

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, ProjLib_CompProjectedCurve, and ProjLib_ProjectedCurve.

◆ Hyperbola()

virtual gp_Hypr2d Adaptor2d_Curve2d::Hyperbola ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and ProjLib_ProjectedCurve.

◆ Intervals()

virtual void Adaptor2d_Curve2d::Intervals	(	NCollection_Array1< double > &	T,
		const GeomAbs_Shape	S ) const

virtual

Stores in <T> the parameters bounding the intervals of continuity .

The array must provide enough room to accommodate for the parameters. i.e. T.Length() > NbIntervals()

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, ProjLib_CompProjectedCurve, and ProjLib_ProjectedCurve.

◆ IsClosed()

virtual bool Adaptor2d_Curve2d::IsClosed ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and ProjLib_ProjectedCurve.

◆ IsPeriodic()

virtual bool Adaptor2d_Curve2d::IsPeriodic ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and ProjLib_ProjectedCurve.

◆ IsRational()

virtual bool Adaptor2d_Curve2d::IsRational ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and ProjLib_ProjectedCurve.

◆ LastParameter()

virtual double Adaptor2d_Curve2d::LastParameter ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, ProjLib_CompProjectedCurve, and ProjLib_ProjectedCurve.

◆ Line()

virtual gp_Lin2d Adaptor2d_Curve2d::Line ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and ProjLib_ProjectedCurve.

◆ NbIntervals()

virtual int Adaptor2d_Curve2d::NbIntervals ( const GeomAbs_Shape S ) const

virtual

If necessary, breaks the curve in intervals of continuity ~~. And returns the number of intervals.~~

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, ProjLib_CompProjectedCurve, and ProjLib_ProjectedCurve.

◆ NbKnots()

virtual int Adaptor2d_Curve2d::NbKnots ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and ProjLib_ProjectedCurve.

◆ NbPoles()

virtual int Adaptor2d_Curve2d::NbPoles ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and ProjLib_ProjectedCurve.

◆ NbSamples()

virtual int Adaptor2d_Curve2d::NbSamples ( ) const

virtual

Reimplemented in Adaptor2d_OffsetCurve, and Geom2dAdaptor_Curve.

◆ Parabola()

virtual gp_Parab2d Adaptor2d_Curve2d::Parabola ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and ProjLib_ProjectedCurve.

◆ Period()

virtual double Adaptor2d_Curve2d::Period ( ) const

virtual

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and ProjLib_ProjectedCurve.

◆ Resolution()

virtual double Adaptor2d_Curve2d::Resolution ( const double R3d ) const

virtual

Returns the parametric resolution corresponding to the real space resolution <R3d>.

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, ProjLib_ProjectedCurve, and Geom2dAdaptor_Curve.

◆ ShallowCopy()

virtual occ::handle< Adaptor2d_Curve2d > Adaptor2d_Curve2d::ShallowCopy ( ) const

virtual

Shallow copy of adaptor.

Reimplemented in BRepAdaptor_Curve2d, Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, ProjLib_CompProjectedCurve, and ProjLib_ProjectedCurve.

◆ Trim()

virtual occ::handle< Adaptor2d_Curve2d > Adaptor2d_Curve2d::Trim	(	const double	First,
		const double	Last,
		const double	Tol ) const

virtual

Returns a curve equivalent of <me> between parameters <First> and <Last>. <Tol> is used to test for 3d points confusion. If <First> >= <Last>

Reimplemented in Adaptor2d_Line2d, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, ProjLib_ProjectedCurve, and ProjLib_CompProjectedCurve.

◆ Value()

virtual gp_Pnt2d Adaptor2d_Curve2d::Value ( const double U ) const

virtual

Computes the point of parameter U on the curve.

Reimplemented in Geom2dAdaptor_Curve, Adaptor2d_OffsetCurve, ProjLib_CompProjectedCurve, ProjLib_ProjectedCurve, and Adaptor2d_Line2d.

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

Adaptor2d_Curve2d.hxx

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~Adaptor2d_Curve2d()

Member Function Documentation

◆ Bezier()

◆ BSpline()

◆ Circle()

◆ Continuity()

◆ D0()

◆ D1()

◆ D2()

◆ D3()

◆ Degree()

◆ DN()

◆ Ellipse()

◆ EvalD0()

◆ EvalD1()

◆ EvalD2()

◆ EvalD3()

◆ EvalDN()

◆ FirstParameter()

◆ GetType()

◆ Hyperbola()

◆ Intervals()

◆ IsClosed()

◆ IsPeriodic()

◆ IsRational()

◆ LastParameter()

◆ Line()

◆ NbIntervals()

◆ NbKnots()

◆ NbPoles()

◆ NbSamples()

◆ Parabola()

◆ Period()

◆ Resolution()

◆ ShallowCopy()

◆ Trim()

◆ Value()