Open CASCADE Technology  7.3.1.dev
Public Member Functions
Adaptor2d_Curve2d Class Reference

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:
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Public Member Functions

virtual Standard_Real FirstParameter () const
 
virtual Standard_Real LastParameter () const
 
virtual GeomAbs_Shape Continuity () const
 
virtual Standard_Integer NbIntervals (const GeomAbs_Shape S) const
 If necessary, breaks the curve in intervals of continuity <S>. And returns the number of intervals. More...
 
virtual void Intervals (TColStd_Array1OfReal &T, const GeomAbs_Shape S) const
 Stores in <T> the parameters bounding the intervals of continuity <S>. More...
 
virtual Handle< Adaptor2d_HCurve2dTrim (const Standard_Real First, const Standard_Real Last, const Standard_Real 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> More...
 
virtual Standard_Boolean IsClosed () const
 
virtual Standard_Boolean IsPeriodic () const
 
virtual Standard_Real Period () const
 
virtual gp_Pnt2d Value (const Standard_Real U) const
 Computes the point of parameter U on the curve. More...
 
virtual void D0 (const Standard_Real U, gp_Pnt2d &P) const
 Computes the point of parameter U on the curve. More...
 
virtual void D1 (const Standard_Real 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. More...
 
virtual void D2 (const Standard_Real 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. More...
 
virtual void D3 (const Standard_Real 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. More...
 
virtual gp_Vec2d DN (const Standard_Real U, const Standard_Integer 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. More...
 
virtual Standard_Real Resolution (const Standard_Real R3d) const
 Returns the parametric resolution corresponding to the real space resolution <R3d>. More...
 
virtual GeomAbs_CurveType GetType () const
 Returns the type of the curve in the current interval : Line, Circle, Ellipse, Hyperbola, Parabola, BezierCurve, BSplineCurve, OtherCurve. More...
 
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 Standard_Integer Degree () const
 
virtual Standard_Boolean IsRational () const
 
virtual Standard_Integer NbPoles () const
 
virtual Standard_Integer NbKnots () const
 
virtual Standard_Integer NbSamples () const
 
virtual Handle< Geom2d_BezierCurveBezier () const
 
virtual Handle< Geom2d_BSplineCurveBSpline () const
 
virtual ~Adaptor2d_Curve2d ()
 

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()

virtual Adaptor2d_Curve2d::~Adaptor2d_Curve2d ( )
virtual

Member Function Documentation

◆ Bezier()

virtual Handle< Geom2d_BezierCurve > Adaptor2d_Curve2d::Bezier ( ) const
virtual

◆ BSpline()

virtual Handle< Geom2d_BSplineCurve > Adaptor2d_Curve2d::BSpline ( ) const
virtual

◆ Circle()

virtual gp_Circ2d Adaptor2d_Curve2d::Circle ( ) const
virtual

◆ Continuity()

virtual GeomAbs_Shape Adaptor2d_Curve2d::Continuity ( ) const
virtual

◆ D0()

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

Computes the point of parameter U on the curve.

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

◆ D1()

virtual void Adaptor2d_Curve2d::D1 ( const Standard_Real  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 ProjLib_ProjectedCurve, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, ProjLib_CompProjectedCurve, and Adaptor2d_Line2d.

◆ D2()

virtual void Adaptor2d_Curve2d::D2 ( const Standard_Real  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 ProjLib_ProjectedCurve, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, ProjLib_CompProjectedCurve, and Adaptor2d_Line2d.

◆ D3()

virtual void Adaptor2d_Curve2d::D3 ( const Standard_Real  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 ProjLib_ProjectedCurve, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and Adaptor2d_Line2d.

◆ Degree()

virtual Standard_Integer Adaptor2d_Curve2d::Degree ( ) const
virtual

◆ DN()

virtual gp_Vec2d Adaptor2d_Curve2d::DN ( const Standard_Real  U,
const Standard_Integer  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 ProjLib_ProjectedCurve, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, ProjLib_CompProjectedCurve, and Adaptor2d_Line2d.

◆ Ellipse()

virtual gp_Elips2d Adaptor2d_Curve2d::Ellipse ( ) const
virtual

◆ FirstParameter()

virtual Standard_Real Adaptor2d_Curve2d::FirstParameter ( ) const
virtual

◆ 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 ProjLib_ProjectedCurve, ProjLib_CompProjectedCurve, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and Adaptor2d_Line2d.

◆ Hyperbola()

virtual gp_Hypr2d Adaptor2d_Curve2d::Hyperbola ( ) const
virtual

◆ Intervals()

virtual void Adaptor2d_Curve2d::Intervals ( TColStd_Array1OfReal T,
const GeomAbs_Shape  S 
) const
virtual

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

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

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

◆ IsClosed()

virtual Standard_Boolean Adaptor2d_Curve2d::IsClosed ( ) const
virtual

◆ IsPeriodic()

virtual Standard_Boolean Adaptor2d_Curve2d::IsPeriodic ( ) const
virtual

◆ IsRational()

virtual Standard_Boolean Adaptor2d_Curve2d::IsRational ( ) const
virtual

◆ LastParameter()

virtual Standard_Real Adaptor2d_Curve2d::LastParameter ( ) const
virtual

◆ Line()

virtual gp_Lin2d Adaptor2d_Curve2d::Line ( ) const
virtual

◆ NbIntervals()

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

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

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

◆ NbKnots()

virtual Standard_Integer Adaptor2d_Curve2d::NbKnots ( ) const
virtual

◆ NbPoles()

virtual Standard_Integer Adaptor2d_Curve2d::NbPoles ( ) const
virtual

◆ NbSamples()

virtual Standard_Integer Adaptor2d_Curve2d::NbSamples ( ) const
virtual

◆ Parabola()

virtual gp_Parab2d Adaptor2d_Curve2d::Parabola ( ) const
virtual

◆ Period()

virtual Standard_Real Adaptor2d_Curve2d::Period ( ) const
virtual

◆ Resolution()

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

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

Reimplemented in ProjLib_ProjectedCurve, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and Adaptor2d_Line2d.

◆ Trim()

virtual Handle< Adaptor2d_HCurve2d > Adaptor2d_Curve2d::Trim ( const Standard_Real  First,
const Standard_Real  Last,
const Standard_Real  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 ProjLib_ProjectedCurve, ProjLib_CompProjectedCurve, Adaptor2d_OffsetCurve, Geom2dAdaptor_Curve, and Adaptor2d_Line2d.

◆ Value()

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

Computes the point of parameter U on the curve.

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


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