include/opencascade/GeomFill_SnglrFunc.hxx

0001 // Created on: 1998-02-26
0002 // Created by: Roman BORISOV
0003 // Copyright (c) 1998-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _GeomFill_SnglrFunc_HeaderFile
0018 #define _GeomFill_SnglrFunc_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <Adaptor3d_Curve.hxx>
0025 #include <Standard_Integer.hxx>
0026 #include <GeomAbs_Shape.hxx>
0027 #include <TColStd_Array1OfReal.hxx>
0028 #include <GeomAbs_CurveType.hxx>
0029
0030 class gp_Pnt;
0031 class gp_Vec;
0032
0033 //! to  represent  function  C'(t)^C''(t)
0034 class GeomFill_SnglrFunc : public Adaptor3d_Curve
0035 {
0036 public:
0037   DEFINE_STANDARD_ALLOC
0038
0039   Standard_EXPORT GeomFill_SnglrFunc(const Handle(Adaptor3d_Curve)& HC);
0040
0041   //! Shallow copy of adaptor
0042   Standard_EXPORT virtual Handle(Adaptor3d_Curve) ShallowCopy() const Standard_OVERRIDE;
0043
0044   Standard_EXPORT void SetRatio(const Standard_Real Ratio);
0045
0046   Standard_EXPORT Standard_Real FirstParameter() const Standard_OVERRIDE;
0047
0048   Standard_EXPORT Standard_Real LastParameter() const Standard_OVERRIDE;
0049
0050   //! Returns  the number  of  intervals for  continuity
0051   //! <S>. May be one if Continuity(me) >= <S>
0052   Standard_EXPORT Standard_Integer NbIntervals(const GeomAbs_Shape S) const Standard_OVERRIDE;
0053
0054   //! Stores in <T> the  parameters bounding the intervals
0055   //! of continuity <S>.
0056   //!
0057   //! The array must provide  enough room to  accommodate
0058   //! for the parameters. i.e. T.Length() > NbIntervals()
0059   Standard_EXPORT void Intervals(TColStd_Array1OfReal& T,
0060                                  const GeomAbs_Shape   S) const Standard_OVERRIDE;
0061
0062   //! Computes the point of parameter U on the curve.
0063   Standard_EXPORT gp_Pnt Value(const Standard_Real U) const Standard_OVERRIDE;
0064
0065   Standard_EXPORT Standard_Boolean IsPeriodic() const Standard_OVERRIDE;
0066
0067   Standard_EXPORT Standard_Real Period() const Standard_OVERRIDE;
0068
0069   //! Computes the point of parameter U on the curve.
0070   Standard_EXPORT void D0(const Standard_Real U, gp_Pnt& P) const Standard_OVERRIDE;
0071
0072   //! Computes the point of parameter U on the curve with its
0073   //! first derivative.
0074   //! Raised if the continuity of the current interval
0075   //! is not C1.
0076   Standard_EXPORT void D1(const Standard_Real U, gp_Pnt& P, gp_Vec& V) const Standard_OVERRIDE;
0077
0078   //! Returns the point P of parameter U, the first and second
0079   //! derivatives V1 and V2.
0080   //! Raised if the continuity of the current interval
0081   //! is not C2.
0082   Standard_EXPORT void D2(const Standard_Real U,
0083                           gp_Pnt&             P,
0084                           gp_Vec&             V1,
0085                           gp_Vec&             V2) const Standard_OVERRIDE;
0086
0087   //! Returns the point P of parameter U, the first, the second
0088   //! and the third derivative.
0089   //! Raised if the continuity of the current interval
0090   //! is not C1.
0091   Standard_EXPORT void D3(const Standard_Real U,
0092                           gp_Pnt&             P,
0093                           gp_Vec&             V1,
0094                           gp_Vec&             V2,
0095                           gp_Vec&             V3) const Standard_OVERRIDE;
0096
0097   //! The returned vector gives the value of the derivative for the
0098   //! order of derivation N.
0099   //! Raised if N < 1.
0100   Standard_EXPORT gp_Vec DN(const Standard_Real    U,
0101                             const Standard_Integer N) const Standard_OVERRIDE;
0102
0103   //! Returns the parametric  resolution corresponding
0104   //! to the real space resolution <R3d>.
0105   Standard_EXPORT Standard_Real Resolution(const Standard_Real R3d) const Standard_OVERRIDE;
0106
0107   //! Returns  the  type of the   curve  in the  current
0108   //! interval :   Line,   Circle,   Ellipse, Hyperbola,
0109   //! Parabola, BezierCurve, BSplineCurve, OtherCurve.
0110   Standard_EXPORT GeomAbs_CurveType GetType() const Standard_OVERRIDE;
0111
0112 protected:
0113 private:
0114   Handle(Adaptor3d_Curve) myHCurve;
0115   Standard_Real           ratio;
0116 };
0117
0118 #endif // _GeomFill_SnglrFunc_HeaderFile