Open CASCADE Technology  7.7.0.dev
Public Member Functions | Protected Attributes

Geom2dAdaptor_Curve Class Reference

An interface between the services provided by any curve from the package Geom2d and those required of the curve by algorithms which use it. More...

#include <Geom2dAdaptor_Curve.hxx>

Inheritance diagram for Geom2dAdaptor_Curve:
Inheritance graph
[legend]

Public Member Functions

 Geom2dAdaptor_Curve ()
 
 Geom2dAdaptor_Curve (const Handle< Geom2d_Curve > &C)
 
 Geom2dAdaptor_Curve (const Handle< Geom2d_Curve > &C, const Standard_Real UFirst, const Standard_Real ULast)
 Standard_ConstructionError is raised if Ufirst>Ulast. More...
 
virtual Handle< Adaptor2d_Curve2dShallowCopy () const override
 Shallow copy of adaptor. More...
 
void Reset ()
 Reset currently loaded curve (undone Load()). More...
 
void Load (const Handle< Geom2d_Curve > &theCurve)
 
void Load (const Handle< Geom2d_Curve > &theCurve, const Standard_Real theUFirst, const Standard_Real theULast)
 Standard_ConstructionError is raised if theUFirst>theULast. More...
 
const Handle< Geom2d_Curve > & Curve () const
 
virtual Standard_Real FirstParameter () const override
 
virtual Standard_Real LastParameter () const override
 
GeomAbs_Shape Continuity () const override
 
Standard_Integer NbIntervals (const GeomAbs_Shape S) const override
 If necessary, breaks the curve in intervals of continuity . And returns the number of intervals. More...
 
void Intervals (TColStd_Array1OfReal &T, const GeomAbs_Shape S) const override
 Stores in <T> the parameters bounding the intervals of continuity . More...
 
Handle< Adaptor2d_Curve2dTrim (const Standard_Real First, const Standard_Real Last, const Standard_Real 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> More...
 
Standard_Boolean IsClosed () const override
 
Standard_Boolean IsPeriodic () const override
 
Standard_Real Period () const override
 
gp_Pnt2d Value (const Standard_Real U) const override
 Computes the point of parameter U on the curve. More...
 
void D0 (const Standard_Real U, gp_Pnt2d &P) const override
 Computes the point of parameter U. More...
 
void D1 (const Standard_Real U, gp_Pnt2d &P, gp_Vec2d &V) const override
 Computes the point of parameter U on the curve with its first derivative. Raised if the continuity of the current interval is not C1. More...
 
void D2 (const Standard_Real U, gp_Pnt2d &P, gp_Vec2d &V1, gp_Vec2d &V2) const override
 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. More...
 
void D3 (const Standard_Real U, gp_Pnt2d &P, gp_Vec2d &V1, gp_Vec2d &V2, gp_Vec2d &V3) const override
 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. More...
 
gp_Vec2d DN (const Standard_Real U, const Standard_Integer N) const override
 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. More...
 
Standard_Real Resolution (const Standard_Real Ruv) const override
 returns the parametric resolution More...
 
virtual GeomAbs_CurveType GetType () const override
 Returns the type of the curve in the current interval : Line, Circle, Ellipse, Hyperbola, Parabola, BezierCurve, BSplineCurve, OtherCurve. More...
 
gp_Lin2d Line () const override
 
gp_Circ2d Circle () const override
 
gp_Elips2d Ellipse () const override
 
gp_Hypr2d Hyperbola () const override
 
gp_Parab2d Parabola () const override
 
Standard_Integer Degree () const override
 
Standard_Boolean IsRational () const override
 
Standard_Integer NbPoles () const override
 
Standard_Integer NbKnots () const override
 
virtual Standard_Integer NbSamples () const override
 
Handle< Geom2d_BezierCurveBezier () const override
 
Handle< Geom2d_BSplineCurveBSpline () const override
 
- Public Member Functions inherited from Adaptor2d_Curve2d
virtual ~Adaptor2d_Curve2d ()
 
- Public Member Functions inherited from Standard_Transient
 Standard_Transient ()
 Empty constructor. More...
 
 Standard_Transient (const Standard_Transient &)
 Copy constructor – does nothing. More...
 
Standard_Transientoperator= (const Standard_Transient &)
 Assignment operator, needed to avoid copying reference counter. More...
 
virtual ~Standard_Transient ()
 Destructor must be virtual. More...
 
virtual void Delete () const
 Memory deallocator for transient classes. More...
 
virtual const opencascade::handle< Standard_Type > & DynamicType () const
 Returns a type descriptor about this object. More...
 
Standard_Boolean IsInstance (const opencascade::handle< Standard_Type > &theType) const
 Returns a true value if this is an instance of Type. More...
 
Standard_Boolean IsInstance (const Standard_CString theTypeName) const
 Returns a true value if this is an instance of TypeName. More...
 
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. More...
 
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. More...
 
Standard_TransientThis () 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. More...
 
Standard_Integer GetRefCount () const
 Get the reference counter of this object. More...
 
void IncrementRefCounter () const
 Increments the reference counter of this object. More...
 
Standard_Integer DecrementRefCounter () const
 Decrements the reference counter of this object; returns the decremented value. More...
 

Protected Attributes

Handle< Geom2d_CurvemyCurve
 
GeomAbs_CurveType myTypeCurve
 
Standard_Real myFirst
 
Standard_Real myLast
 
Handle< Geom2d_BSplineCurvemyBSplineCurve
 B-spline representation to prevent castings. More...
 
Handle< BSplCLib_CachemyCurveCache
 Cached data for B-spline or Bezier curve. More...
 
Handle< Geom2dEvaluator_CurvemyNestedEvaluator
 Calculates value of offset curve. More...
 

Additional Inherited Members

- Public Types inherited from Standard_Transient
typedef void base_type
 Returns a type descriptor about this object. More...
 
- Static Public Member Functions inherited from Standard_Transient
static const char * get_type_name ()
 Returns a type descriptor about this object. More...
 
static const opencascade::handle< Standard_Type > & get_type_descriptor ()
 Returns type descriptor of Standard_Transient class. More...
 

Detailed Description

An interface between the services provided by any curve from the package Geom2d and those required of the curve by algorithms which use it.

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

◆ Geom2dAdaptor_Curve() [1/3]

Geom2dAdaptor_Curve::Geom2dAdaptor_Curve ( )

◆ Geom2dAdaptor_Curve() [2/3]

Geom2dAdaptor_Curve::Geom2dAdaptor_Curve ( const Handle< Geom2d_Curve > &  C)

◆ Geom2dAdaptor_Curve() [3/3]

Geom2dAdaptor_Curve::Geom2dAdaptor_Curve ( const Handle< Geom2d_Curve > &  C,
const Standard_Real  UFirst,
const Standard_Real  ULast 
)

Standard_ConstructionError is raised if Ufirst>Ulast.

Member Function Documentation

◆ Bezier()

Handle< Geom2d_BezierCurve > Geom2dAdaptor_Curve::Bezier ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ BSpline()

Handle< Geom2d_BSplineCurve > Geom2dAdaptor_Curve::BSpline ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ Circle()

gp_Circ2d Geom2dAdaptor_Curve::Circle ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ Continuity()

GeomAbs_Shape Geom2dAdaptor_Curve::Continuity ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ Curve()

const Handle< Geom2d_Curve >& Geom2dAdaptor_Curve::Curve ( ) const
inline

◆ D0()

void Geom2dAdaptor_Curve::D0 ( const Standard_Real  U,
gp_Pnt2d P 
) const
overridevirtual

Computes the point of parameter U.

Reimplemented from Adaptor2d_Curve2d.

◆ D1()

void Geom2dAdaptor_Curve::D1 ( const Standard_Real  U,
gp_Pnt2d P,
gp_Vec2d V 
) const
overridevirtual

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 from Adaptor2d_Curve2d.

◆ D2()

void Geom2dAdaptor_Curve::D2 ( const Standard_Real  U,
gp_Pnt2d P,
gp_Vec2d V1,
gp_Vec2d V2 
) const
overridevirtual

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 from Adaptor2d_Curve2d.

◆ D3()

void Geom2dAdaptor_Curve::D3 ( const Standard_Real  U,
gp_Pnt2d P,
gp_Vec2d V1,
gp_Vec2d V2,
gp_Vec2d V3 
) const
overridevirtual

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 from Adaptor2d_Curve2d.

◆ Degree()

Standard_Integer Geom2dAdaptor_Curve::Degree ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ DN()

gp_Vec2d Geom2dAdaptor_Curve::DN ( const Standard_Real  U,
const Standard_Integer  N 
) const
overridevirtual

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 from Adaptor2d_Curve2d.

◆ Ellipse()

gp_Elips2d Geom2dAdaptor_Curve::Ellipse ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ FirstParameter()

virtual Standard_Real Geom2dAdaptor_Curve::FirstParameter ( ) const
inlineoverridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ GetType()

virtual GeomAbs_CurveType Geom2dAdaptor_Curve::GetType ( ) const
inlineoverridevirtual

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

Reimplemented from Adaptor2d_Curve2d.

◆ Hyperbola()

gp_Hypr2d Geom2dAdaptor_Curve::Hyperbola ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ Intervals()

void Geom2dAdaptor_Curve::Intervals ( TColStd_Array1OfReal 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 Adaptor2d_Curve2d.

◆ IsClosed()

Standard_Boolean Geom2dAdaptor_Curve::IsClosed ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ IsPeriodic()

Standard_Boolean Geom2dAdaptor_Curve::IsPeriodic ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ IsRational()

Standard_Boolean Geom2dAdaptor_Curve::IsRational ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ LastParameter()

virtual Standard_Real Geom2dAdaptor_Curve::LastParameter ( ) const
inlineoverridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ Line()

gp_Lin2d Geom2dAdaptor_Curve::Line ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ Load() [1/2]

void Geom2dAdaptor_Curve::Load ( const Handle< Geom2d_Curve > &  theCurve)
inline

◆ Load() [2/2]

void Geom2dAdaptor_Curve::Load ( const Handle< Geom2d_Curve > &  theCurve,
const Standard_Real  theUFirst,
const Standard_Real  theULast 
)
inline

Standard_ConstructionError is raised if theUFirst>theULast.

◆ NbIntervals()

Standard_Integer Geom2dAdaptor_Curve::NbIntervals ( const GeomAbs_Shape  S) const
overridevirtual

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

Reimplemented from Adaptor2d_Curve2d.

◆ NbKnots()

Standard_Integer Geom2dAdaptor_Curve::NbKnots ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ NbPoles()

Standard_Integer Geom2dAdaptor_Curve::NbPoles ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ NbSamples()

virtual Standard_Integer Geom2dAdaptor_Curve::NbSamples ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ Parabola()

gp_Parab2d Geom2dAdaptor_Curve::Parabola ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ Period()

Standard_Real Geom2dAdaptor_Curve::Period ( ) const
overridevirtual

Reimplemented from Adaptor2d_Curve2d.

◆ Reset()

void Geom2dAdaptor_Curve::Reset ( )

Reset currently loaded curve (undone Load()).

◆ Resolution()

Standard_Real Geom2dAdaptor_Curve::Resolution ( const Standard_Real  Ruv) const
overridevirtual

returns the parametric resolution

Reimplemented from Adaptor2d_Curve2d.

◆ ShallowCopy()

virtual Handle< Adaptor2d_Curve2d > Geom2dAdaptor_Curve::ShallowCopy ( ) const
overridevirtual

Shallow copy of adaptor.

Reimplemented from Adaptor2d_Curve2d.

Reimplemented in BRepAdaptor_Curve2d.

◆ Trim()

Handle< Adaptor2d_Curve2d > Geom2dAdaptor_Curve::Trim ( const Standard_Real  First,
const Standard_Real  Last,
const Standard_Real  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 Adaptor2d_Curve2d.

◆ Value()

gp_Pnt2d Geom2dAdaptor_Curve::Value ( const Standard_Real  U) const
overridevirtual

Computes the point of parameter U on the curve.

Reimplemented from Adaptor2d_Curve2d.

Field Documentation

◆ myBSplineCurve

Handle< Geom2d_BSplineCurve > Geom2dAdaptor_Curve::myBSplineCurve
protected

B-spline representation to prevent castings.

◆ myCurve

Handle< Geom2d_Curve > Geom2dAdaptor_Curve::myCurve
protected

◆ myCurveCache

Handle< BSplCLib_Cache > Geom2dAdaptor_Curve::myCurveCache
mutableprotected

Cached data for B-spline or Bezier curve.

◆ myFirst

Standard_Real Geom2dAdaptor_Curve::myFirst
protected

◆ myLast

Standard_Real Geom2dAdaptor_Curve::myLast
protected

◆ myNestedEvaluator

Handle< Geom2dEvaluator_Curve > Geom2dAdaptor_Curve::myNestedEvaluator
protected

Calculates value of offset curve.

◆ myTypeCurve

GeomAbs_CurveType Geom2dAdaptor_Curve::myTypeCurve
protected

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