1 // Created on: 1994-02-23
3 // Copyright (c) 1994-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _Adaptor2d_HCurve2d_HeaderFile
18 #define _Adaptor2d_HCurve2d_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_Type.hxx>
23 #include <Standard_Transient.hxx>
24 #include <Standard_Real.hxx>
25 #include <GeomAbs_Shape.hxx>
26 #include <Standard_Integer.hxx>
27 #include <TColStd_Array1OfReal.hxx>
28 #include <Standard_Boolean.hxx>
29 #include <gp_Pnt2d.hxx>
30 #include <gp_Vec2d.hxx>
31 #include <GeomAbs_CurveType.hxx>
32 #include <gp_Lin2d.hxx>
33 #include <gp_Circ2d.hxx>
34 #include <gp_Elips2d.hxx>
35 #include <gp_Hypr2d.hxx>
36 #include <gp_Parab2d.hxx>
37 #include <Geom2d_BezierCurve.hxx>
38 #include <Geom2d_BSplineCurve.hxx>
40 class Adaptor2d_Curve2d;
45 class Adaptor2d_HCurve2d;
46 DEFINE_STANDARD_HANDLE(Adaptor2d_HCurve2d, Standard_Transient)
48 //! Root class for 2D curves manipulated by handles, on
49 //! which geometric algorithms work.
50 //! An adapted curve is an interface between the
51 //! services provided by a curve, and those required of
52 //! the curve by algorithms, which use it.
53 //! A derived specific class is provided:
54 //! Geom2dAdaptor_HCurve for a curve from the Geom2d package.
55 class Adaptor2d_HCurve2d : public Standard_Transient
61 //! Returns a reference to the Curve2d inside the HCurve2d.
62 Standard_EXPORT virtual const Adaptor2d_Curve2d& Curve2d() const = 0;
64 Standard_Real FirstParameter() const;
66 Standard_Real LastParameter() const;
68 GeomAbs_Shape Continuity() const;
70 Standard_Integer NbIntervals (const GeomAbs_Shape S) const;
72 void Intervals (TColStd_Array1OfReal& T, const GeomAbs_Shape S) const;
74 //! If <First> >= <Last>
75 Handle(Adaptor2d_HCurve2d) Trim (const Standard_Real First, const Standard_Real Last, const Standard_Real Tol) const;
77 Standard_Boolean IsClosed() const;
79 Standard_Boolean IsPeriodic() const;
81 Standard_Real Period() const;
83 gp_Pnt2d Value (const Standard_Real U) const;
85 void D0 (const Standard_Real U, gp_Pnt2d& P) const;
87 void D1 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V) const;
89 void D2 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V1, gp_Vec2d& V2) const;
91 void D3 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V1, gp_Vec2d& V2, gp_Vec2d& V3) const;
93 gp_Vec2d DN (const Standard_Real U, const Standard_Integer N) const;
95 Standard_Real Resolution (const Standard_Real R3d) const;
97 GeomAbs_CurveType GetType() const;
99 gp_Lin2d Line() const;
101 gp_Circ2d Circle() const;
103 gp_Elips2d Ellipse() const;
105 gp_Hypr2d Hyperbola() const;
107 gp_Parab2d Parabola() const;
109 Standard_Integer Degree() const;
111 Standard_Boolean IsRational() const;
113 Standard_Integer NbPoles() const;
115 Standard_Integer NbKnots() const;
117 Handle(Geom2d_BezierCurve) Bezier() const;
119 virtual Handle(Geom2d_BSplineCurve) BSpline() const;
122 DEFINE_STANDARD_RTTIEXT(Adaptor2d_HCurve2d,Standard_Transient)
125 #include <Adaptor2d_HCurve2d.lxx>
127 #endif // _Adaptor2d_HCurve2d_HeaderFile