1 // Created on: 1993-04-15
2 // Created by: Bruno DUMORTIER
3 // Copyright (c) 1993-1999 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_OffsetCurve_HeaderFile
18 #define _Adaptor2d_OffsetCurve_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <Standard_Real.hxx>
25 #include <Adaptor2d_Curve2d.hxx>
26 #include <GeomAbs_Shape.hxx>
27 #include <Standard_Integer.hxx>
28 #include <TColStd_Array1OfReal.hxx>
29 #include <Standard_Boolean.hxx>
30 #include <GeomAbs_CurveType.hxx>
31 class Adaptor2d_HCurve2d;
32 class Standard_NoSuchObject;
33 class Standard_DomainError;
34 class Standard_OutOfRange;
35 class Standard_TypeMismatch;
43 class Geom2d_BezierCurve;
44 class Geom2d_BSplineCurve;
47 //! Defines an Offset curve (algorithmic 2d curve).
48 class Adaptor2d_OffsetCurve : public Adaptor2d_Curve2d
55 //! The Offset is set to 0.
56 Standard_EXPORT Adaptor2d_OffsetCurve();
58 //! The curve is loaded. The Offset is set to 0.
59 Standard_EXPORT Adaptor2d_OffsetCurve(const Handle(Adaptor2d_HCurve2d)& C);
61 //! Creates an OffsetCurve curve.
62 //! The Offset is set to Offset.
63 Standard_EXPORT Adaptor2d_OffsetCurve(const Handle(Adaptor2d_HCurve2d)& C, const Standard_Real Offset);
65 //! Create an Offset curve.
66 //! WFirst,WLast define the bounds of the Offset curve.
67 Standard_EXPORT Adaptor2d_OffsetCurve(const Handle(Adaptor2d_HCurve2d)& C, const Standard_Real Offset, const Standard_Real WFirst, const Standard_Real WLast);
69 //! Changes the curve. The Offset is reset to 0.
70 Standard_EXPORT void Load (const Handle(Adaptor2d_HCurve2d)& S);
72 //! Changes the Offset on the current Curve.
73 Standard_EXPORT void Load (const Standard_Real Offset);
75 //! Changes the Offset Curve on the current Curve.
76 Standard_EXPORT void Load (const Standard_Real Offset, const Standard_Real WFirst, const Standard_Real WLast);
78 const Handle(Adaptor2d_HCurve2d)& Curve() const;
80 Standard_Real Offset() const;
82 Standard_Real FirstParameter() const Standard_OVERRIDE;
84 Standard_Real LastParameter() const Standard_OVERRIDE;
86 Standard_EXPORT GeomAbs_Shape Continuity() const Standard_OVERRIDE;
88 //! If necessary, breaks the curve in intervals of
89 //! continuity <S>. And returns the number of
91 Standard_EXPORT Standard_Integer NbIntervals (const GeomAbs_Shape S) const Standard_OVERRIDE;
93 //! Stores in <T> the parameters bounding the intervals
94 //! of continuity <S>.
96 //! The array must provide enough room to accomodate
97 //! for the parameters. i.e. T.Length() > NbIntervals()
98 Standard_EXPORT void Intervals (TColStd_Array1OfReal& T, const GeomAbs_Shape S) const Standard_OVERRIDE;
100 //! Returns a curve equivalent of <me> between
101 //! parameters <First> and <Last>. <Tol> is used to
102 //! test for 3d points confusion.
103 //! If <First> >= <Last>
104 Standard_EXPORT Handle(Adaptor2d_HCurve2d) Trim (const Standard_Real First, const Standard_Real Last, const Standard_Real Tol) const Standard_OVERRIDE;
106 Standard_EXPORT Standard_Boolean IsClosed() const Standard_OVERRIDE;
108 Standard_EXPORT Standard_Boolean IsPeriodic() const Standard_OVERRIDE;
110 Standard_EXPORT Standard_Real Period() const Standard_OVERRIDE;
112 //! Computes the point of parameter U on the curve.
113 Standard_EXPORT gp_Pnt2d Value (const Standard_Real U) const Standard_OVERRIDE;
115 //! Computes the point of parameter U on the curve.
116 Standard_EXPORT void D0 (const Standard_Real U, gp_Pnt2d& P) const Standard_OVERRIDE;
118 //! Computes the point of parameter U on the curve with its
119 //! first derivative.
120 //! Raised if the continuity of the current interval
122 Standard_EXPORT void D1 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V) const Standard_OVERRIDE;
125 //! Returns the point P of parameter U, the first and second
126 //! derivatives V1 and V2.
127 //! Raised if the continuity of the current interval
129 Standard_EXPORT void D2 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V1, gp_Vec2d& V2) const Standard_OVERRIDE;
132 //! Returns the point P of parameter U, the first, the second
133 //! and the third derivative.
134 //! Raised if the continuity of the current interval
136 Standard_EXPORT void D3 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V1, gp_Vec2d& V2, gp_Vec2d& V3) const Standard_OVERRIDE;
139 //! The returned vector gives the value of the derivative for the
140 //! order of derivation N.
141 //! Raised if the continuity of the current interval
144 Standard_EXPORT gp_Vec2d DN (const Standard_Real U, const Standard_Integer N) const Standard_OVERRIDE;
146 //! Returns the parametric resolution corresponding
147 //! to the real space resolution <R3d>.
148 Standard_EXPORT Standard_Real Resolution (const Standard_Real R3d) const Standard_OVERRIDE;
150 //! Returns the type of the curve in the current
151 //! interval : Line, Circle, Ellipse, Hyperbola,
152 //! Parabola, BezierCurve, BSplineCurve, OtherCurve.
153 Standard_EXPORT GeomAbs_CurveType GetType() const Standard_OVERRIDE;
155 Standard_EXPORT gp_Lin2d Line() const Standard_OVERRIDE;
157 Standard_EXPORT gp_Circ2d Circle() const Standard_OVERRIDE;
159 Standard_EXPORT gp_Elips2d Ellipse() const Standard_OVERRIDE;
161 Standard_EXPORT gp_Hypr2d Hyperbola() const Standard_OVERRIDE;
163 Standard_EXPORT gp_Parab2d Parabola() const Standard_OVERRIDE;
165 Standard_EXPORT Standard_Integer Degree() const Standard_OVERRIDE;
167 Standard_EXPORT Standard_Boolean IsRational() const Standard_OVERRIDE;
169 Standard_EXPORT Standard_Integer NbPoles() const Standard_OVERRIDE;
171 Standard_EXPORT Standard_Integer NbKnots() const Standard_OVERRIDE;
173 Standard_EXPORT Handle(Geom2d_BezierCurve) Bezier() const Standard_OVERRIDE;
175 Standard_EXPORT Handle(Geom2d_BSplineCurve) BSpline() const Standard_OVERRIDE;
177 Standard_EXPORT Standard_Integer NbSamples() const Standard_OVERRIDE;
191 Handle(Adaptor2d_HCurve2d) myCurve;
192 Standard_Real myOffset;
193 Standard_Real myFirst;
194 Standard_Real myLast;
199 #include <Adaptor2d_OffsetCurve.lxx>
205 #endif // _Adaptor2d_OffsetCurve_HeaderFile