include/opencascade/GeomFill_Fixed.hxx

0001 // Created on: 1997-12-09
0002 // Created by: Philippe MANGIN
0003 // Copyright (c) 1997-1999 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_Fixed_HeaderFile
0018 #define _GeomFill_Fixed_HeaderFile
0019
0020 #include <Standard.hxx>
0021
0022 #include <GeomFill_TrihedronLaw.hxx>
0023 #include <Standard_Real.hxx>
0024 #include <Standard_Integer.hxx>
0025 #include <GeomAbs_Shape.hxx>
0026 #include <TColStd_Array1OfReal.hxx>
0027
0028 class GeomFill_Fixed;
0029 DEFINE_STANDARD_HANDLE(GeomFill_Fixed, GeomFill_TrihedronLaw)
0030
0031 //! Defined an constant TrihedronLaw
0032 class GeomFill_Fixed : public GeomFill_TrihedronLaw
0033 {
0034
0035 public:
0036   Standard_EXPORT GeomFill_Fixed(const gp_Vec& Tangent, const gp_Vec& Normal);
0037
0038   Standard_EXPORT virtual Handle(GeomFill_TrihedronLaw) Copy() const Standard_OVERRIDE;
0039
0040   //! compute Triedrhon on curve at parameter <Param>
0041   Standard_EXPORT virtual Standard_Boolean D0(const Standard_Real Param,
0042                                               gp_Vec&             Tangent,
0043                                               gp_Vec&             Normal,
0044                                               gp_Vec&             BiNormal) Standard_OVERRIDE;
0045
0046   //! compute Triedrhon and  derivative Trihedron  on curve
0047   //! at parameter <Param>
0048   //! Warning : It used only for C1 or C2 approximation
0049   Standard_EXPORT virtual Standard_Boolean D1(const Standard_Real Param,
0050                                               gp_Vec&             Tangent,
0051                                               gp_Vec&             DTangent,
0052                                               gp_Vec&             Normal,
0053                                               gp_Vec&             DNormal,
0054                                               gp_Vec&             BiNormal,
0055                                               gp_Vec&             DBiNormal) Standard_OVERRIDE;
0056
0057   //! compute  Trihedron on curve
0058   //! first and seconde  derivatives.
0059   //! Warning : It used only for C2 approximation
0060   Standard_EXPORT virtual Standard_Boolean D2(const Standard_Real Param,
0061                                               gp_Vec&             Tangent,
0062                                               gp_Vec&             DTangent,
0063                                               gp_Vec&             D2Tangent,
0064                                               gp_Vec&             Normal,
0065                                               gp_Vec&             DNormal,
0066                                               gp_Vec&             D2Normal,
0067                                               gp_Vec&             BiNormal,
0068                                               gp_Vec&             DBiNormal,
0069                                               gp_Vec&             D2BiNormal) Standard_OVERRIDE;
0070
0071   //! Returns  the number  of  intervals for  continuity
0072   //! <S>.
0073   //! May be one if Continuity(me) >= <S>
0074   Standard_EXPORT virtual Standard_Integer NbIntervals(const GeomAbs_Shape S) const
0075     Standard_OVERRIDE;
0076
0077   //! Stores in <T> the  parameters bounding the intervals
0078   //! of continuity <S>.
0079   //!
0080   //! The array must provide  enough room to  accommodate
0081   //! for the parameters. i.e. T.Length() > NbIntervals()
0082   Standard_EXPORT virtual void Intervals(TColStd_Array1OfReal& T,
0083                                          const GeomAbs_Shape   S) const Standard_OVERRIDE;
0084
0085   //! Get average value of Tangent(t) and Normal(t) it is usfull to
0086   //! make fast approximation of rational  surfaces.
0087   Standard_EXPORT virtual void GetAverageLaw(gp_Vec& ATangent,
0088                                              gp_Vec& ANormal,
0089                                              gp_Vec& ABiNormal) Standard_OVERRIDE;
0090
0091   //! Return True.
0092   Standard_EXPORT virtual Standard_Boolean IsConstant() const Standard_OVERRIDE;
0093
0094   DEFINE_STANDARD_RTTIEXT(GeomFill_Fixed, GeomFill_TrihedronLaw)
0095
0096 protected:
0097 private:
0098   gp_Vec T;
0099   gp_Vec N;
0100   gp_Vec B;
0101 };
0102
0103 #endif // _GeomFill_Fixed_HeaderFile