This class provides an interface between the services provided by any curve from the package Geom and those required of the curve by algorithms which use it. Creation of the loaded curve the curve is C1 by piece. More...

#include <GeomAdaptor_Curve.hxx>

Inheritance diagram for GeomAdaptor_Curve:

[legend]

Data Structures
struct	BezierData
	Internal structure for Bezier curve cache data. More...

struct	BSplineData
	Internal structure for BSpline curve cache data. More...

struct	OffsetData
	Internal structure for offset curve evaluation data. More...

Public Types
using	CurveDataVariant
	Variant type for curve-specific evaluation data. Elementary curve primitives (gp_Lin, gp_Circ, etc.) are stored directly to enable direct ElCLib dispatch without virtual calls.

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

Public Member Functions
	GeomAdaptor_Curve ()

	GeomAdaptor_Curve (const occ::handle< Geom_Curve > &theCurve)

	GeomAdaptor_Curve (const occ::handle< Geom_Curve > &theCurve, const double theUFirst, const double theULast)
	Standard_ConstructionError is raised if theUFirst > theULast + Precision::PConfusion()

occ::handle< Adaptor3d_Curve >	ShallowCopy () const override
	Shallow copy of adaptor.

void	Reset ()
	Reset currently loaded curve (undone Load()).

void	Load (const occ::handle< Geom_Curve > &theCurve)

void	Load (const occ::handle< Geom_Curve > &theCurve, const double theUFirst, const double theULast)
	Standard_ConstructionError is raised if theUFirst > theULast + Precision::PConfusion()

const occ::handle< Geom_Curve > &	Curve () const
	Provides a curve inherited from Hcurve from Adaptor. This is inherited to provide easy to use constructors.

double	FirstParameter () const override

double	LastParameter () const override

GeomAbs_Shape	Continuity () const override

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

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

occ::handle< Adaptor3d_Curve >	Trim (const double First, const double Last, const double Tol) const override
	Returns a curve equivalent of <me> between parameters <First> and <Last>. <Tol> is used to test for 3d points confusion. If <First> >= <Last>

bool	IsClosed () const override

bool	IsPeriodic () const override

double	Period () const override

double	Resolution (const double R3d) const override
	returns the parametric resolution

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

gp_Lin	Line () const override

gp_Circ	Circle () const override

gp_Elips	Ellipse () const override

gp_Hypr	Hyperbola () const override

gp_Parab	Parabola () const override

int	Degree () const override
	this should NEVER make a copy of the underlying curve to read the relevant information

bool	IsRational () const override
	this should NEVER make a copy of the underlying curve to read the relevant information

int	NbPoles () const override
	this should NEVER make a copy of the underlying curve to read the relevant information

int	NbKnots () const override
	this should NEVER make a copy of the underlying curve to read the relevant information

occ::handle< Geom_BezierCurve >	Bezier () const override
	this will NOT make a copy of the Bezier Curve : If you want to modify the Curve please make a copy yourself Also it will NOT trim the surface to myFirst/Last.

occ::handle< Geom_BSplineCurve >	BSpline () const override
	this will NOT make a copy of the BSpline Curve : If you want to modify the Curve please make a copy yourself Also it will NOT trim the surface to myFirst/Last.

occ::handle< Geom_OffsetCurve >	OffsetCurve () const override

gp_Pnt	EvalD0 (const double theU) const final
	Point evaluation. Raises an exception on failure.

Geom_Curve::ResD1	EvalD1 (const double theU) const final
	D1 evaluation. Raises an exception on failure.

Geom_Curve::ResD2	EvalD2 (const double theU) const final
	D2 evaluation. Raises an exception on failure.

Geom_Curve::ResD3	EvalD3 (const double theU) const final
	D3 evaluation. Raises an exception on failure.

gp_Vec	EvalDN (const double theU, const int theN) const final
	DN evaluation. Raises an exception on failure.

Public Member Functions inherited from Adaptor3d_Curve
gp_Pnt	Value (const double theU) const
	Computes the point of parameter U on the curve.

void	D0 (const double theU, gp_Pnt &theP) const
	Computes the point of parameter U on the curve.

void	D1 (const double theU, gp_Pnt &theP, gp_Vec &theV) 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.

void	D2 (const double theU, gp_Pnt &theP, gp_Vec &theV1, gp_Vec &theV2) 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.

void	D3 (const double theU, gp_Pnt &theP, gp_Vec &theV1, gp_Vec &theV2, gp_Vec &theV3) 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.

gp_Vec	DN (const double theU, const int theN) 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.

	~Adaptor3d_Curve () 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
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

This class provides an interface between the services provided by any curve from the package Geom and those required of the curve by algorithms which use it. Creation of the loaded curve the curve is C1 by piece.

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.

Member Typedef Documentation

◆ CurveDataVariant

using GeomAdaptor_Curve::CurveDataVariant

Initial value:

 std::variant<std::monostate,
                                        gp_Lin,
                                        gp_Circ,
                                        gp_Elips,
                                        gp_Hypr,
                                        gp_Parab,
                                        OffsetData,
                                        BezierData,
                                        BSplineData>

Variant type for curve-specific evaluation data. Elementary curve primitives (gp_Lin, gp_Circ, etc.) are stored directly to enable direct ElCLib dispatch without virtual calls.

Constructor & Destructor Documentation

◆ GeomAdaptor_Curve() [1/3]

GeomAdaptor_Curve::GeomAdaptor_Curve ( )

inline

◆ GeomAdaptor_Curve() [2/3]

GeomAdaptor_Curve::GeomAdaptor_Curve ( const occ::handle< Geom_Curve > & theCurve )

inline

◆ GeomAdaptor_Curve() [3/3]

GeomAdaptor_Curve::GeomAdaptor_Curve	(	const occ::handle< Geom_Curve > &	theCurve,
		const double	theUFirst,
		const double	theULast )

inline

Standard_ConstructionError is raised if theUFirst > theULast + Precision::PConfusion()

Member Function Documentation

◆ Bezier()

occ::handle< Geom_BezierCurve > GeomAdaptor_Curve::Bezier ( ) const

overridevirtual

this will NOT make a copy of the Bezier Curve : If you want to modify the Curve please make a copy yourself Also it will NOT trim the surface to myFirst/Last.

Reimplemented from Adaptor3d_Curve.

◆ BSpline()

occ::handle< Geom_BSplineCurve > GeomAdaptor_Curve::BSpline ( ) const

overridevirtual

this will NOT make a copy of the BSpline Curve : If you want to modify the Curve please make a copy yourself Also it will NOT trim the surface to myFirst/Last.

Reimplemented from Adaptor3d_Curve.

◆ Circle()

gp_Circ GeomAdaptor_Curve::Circle ( ) const

overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Continuity()

GeomAbs_Shape GeomAdaptor_Curve::Continuity ( ) const

overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Curve()

const occ::handle< Geom_Curve > & GeomAdaptor_Curve::Curve ( ) const

inline

Provides a curve inherited from Hcurve from Adaptor. This is inherited to provide easy to use constructors.

◆ Degree()

int GeomAdaptor_Curve::Degree ( ) const

overridevirtual

this should NEVER make a copy of the underlying curve to read the relevant information

Reimplemented from Adaptor3d_Curve.

◆ Ellipse()

gp_Elips GeomAdaptor_Curve::Ellipse ( ) const

overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ EvalD0()

gp_Pnt GeomAdaptor_Curve::EvalD0 ( const double theU ) const

finalvirtual

Point evaluation. Raises an exception on failure.

Reimplemented from Adaptor3d_Curve.

◆ EvalD1()

Geom_Curve::ResD1 GeomAdaptor_Curve::EvalD1 ( const double theU ) const

finalvirtual

D1 evaluation. Raises an exception on failure.

Reimplemented from Adaptor3d_Curve.

◆ EvalD2()

Geom_Curve::ResD2 GeomAdaptor_Curve::EvalD2 ( const double theU ) const

finalvirtual

D2 evaluation. Raises an exception on failure.

Reimplemented from Adaptor3d_Curve.

◆ EvalD3()

Geom_Curve::ResD3 GeomAdaptor_Curve::EvalD3 ( const double theU ) const

finalvirtual

D3 evaluation. Raises an exception on failure.

Reimplemented from Adaptor3d_Curve.

◆ EvalDN()

gp_Vec GeomAdaptor_Curve::EvalDN	(	const double	theU,
		const int	theN ) const

finalvirtual

DN evaluation. Raises an exception on failure.

Reimplemented from Adaptor3d_Curve.

◆ FirstParameter()

double GeomAdaptor_Curve::FirstParameter ( ) const

inlineoverridevirtual

Reimplemented from Adaptor3d_Curve.

◆ GetType()

GeomAbs_CurveType GeomAdaptor_Curve::GetType ( ) const

inlineoverridevirtual

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

Reimplemented from Adaptor3d_Curve.

◆ Hyperbola()

gp_Hypr GeomAdaptor_Curve::Hyperbola ( ) const

overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Intervals()

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

overridevirtual

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 from Adaptor3d_Curve.

◆ IsClosed()

bool GeomAdaptor_Curve::IsClosed ( ) const

overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ IsPeriodic()

bool GeomAdaptor_Curve::IsPeriodic ( ) const

overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ IsRational()

bool GeomAdaptor_Curve::IsRational ( ) const

overridevirtual

this should NEVER make a copy of the underlying curve to read the relevant information

Reimplemented from Adaptor3d_Curve.

◆ LastParameter()

double GeomAdaptor_Curve::LastParameter ( ) const

inlineoverridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Line()

gp_Lin GeomAdaptor_Curve::Line ( ) const

overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Load() [1/2]

void GeomAdaptor_Curve::Load ( const occ::handle< Geom_Curve > & theCurve )

inline

◆ Load() [2/2]

void GeomAdaptor_Curve::Load	(	const occ::handle< Geom_Curve > &	theCurve,
		const double	theUFirst,
		const double	theULast )

inline

Standard_ConstructionError is raised if theUFirst > theULast + Precision::PConfusion()

◆ NbIntervals()

int GeomAdaptor_Curve::NbIntervals ( const GeomAbs_Shape S ) const

overridevirtual

Returns the number of intervals for continuity ~~. May be one if Continuity(me) >=~~

Reimplemented from Adaptor3d_Curve.

◆ NbKnots()

int GeomAdaptor_Curve::NbKnots ( ) const

overridevirtual

this should NEVER make a copy of the underlying curve to read the relevant information

Reimplemented from Adaptor3d_Curve.

◆ NbPoles()

int GeomAdaptor_Curve::NbPoles ( ) const

overridevirtual

this should NEVER make a copy of the underlying curve to read the relevant information

Reimplemented from Adaptor3d_Curve.

◆ OffsetCurve()

occ::handle< Geom_OffsetCurve > GeomAdaptor_Curve::OffsetCurve ( ) const

overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Parabola()

gp_Parab GeomAdaptor_Curve::Parabola ( ) const

overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Period()

double GeomAdaptor_Curve::Period ( ) const

overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Reset()

void GeomAdaptor_Curve::Reset ( )

Reset currently loaded curve (undone Load()).

◆ Resolution()

double GeomAdaptor_Curve::Resolution ( const double R3d ) const

overridevirtual

returns the parametric resolution

Reimplemented from Adaptor3d_Curve.

◆ ShallowCopy()

occ::handle< Adaptor3d_Curve > GeomAdaptor_Curve::ShallowCopy ( ) const

overridevirtual

Shallow copy of adaptor.

Reimplemented from Adaptor3d_Curve.

◆ Trim()

occ::handle< Adaptor3d_Curve > GeomAdaptor_Curve::Trim	(	const double	First,
		const double	Last,
		const double	Tol ) const

overridevirtual

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

Reimplemented from Adaptor3d_Curve.

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

GeomAdaptor_Curve.hxx

Data Structures

Public Types

Public Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ CurveDataVariant

Constructor & Destructor Documentation

◆ GeomAdaptor_Curve() [1/3]

◆ GeomAdaptor_Curve() [2/3]

◆ GeomAdaptor_Curve() [3/3]

Member Function Documentation

◆ Bezier()

◆ BSpline()

◆ Circle()

◆ Continuity()

◆ Curve()

◆ Degree()

◆ Ellipse()

◆ EvalD0()

◆ EvalD1()

◆ EvalD2()

◆ EvalD3()

◆ EvalDN()

◆ FirstParameter()

◆ GetType()

◆ Hyperbola()

◆ Intervals()

◆ IsClosed()

◆ IsPeriodic()

◆ IsRational()

◆ LastParameter()

◆ Line()

◆ Load() [1/2]

◆ Load() [2/2]

◆ NbIntervals()

◆ NbKnots()

◆ NbPoles()

◆ OffsetCurve()

◆ Parabola()

◆ Period()

◆ Reset()

◆ Resolution()

◆ ShallowCopy()

◆ Trim()