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 <NCollection_Array1.hxx>
0027
0028 //! Defined an constant TrihedronLaw
0029 class GeomFill_Fixed : public GeomFill_TrihedronLaw
0030 {
0031
0032 public:
0033   Standard_EXPORT GeomFill_Fixed(const gp_Vec& Tangent, const gp_Vec& Normal);
0034
0035   Standard_EXPORT occ::handle<GeomFill_TrihedronLaw> Copy() const override;
0036
0037   //! compute Triedrhon on curve at parameter <Param>
0038   Standard_EXPORT bool D0(const double Param,
0039                           gp_Vec&      Tangent,
0040                           gp_Vec&      Normal,
0041                           gp_Vec&      BiNormal) override;
0042
0043   //! compute Triedrhon and derivative Trihedron on curve
0044   //! at parameter <Param>
0045   //! Warning : It used only for C1 or C2 approximation
0046   Standard_EXPORT bool D1(const double Param,
0047                           gp_Vec&      Tangent,
0048                           gp_Vec&      DTangent,
0049                           gp_Vec&      Normal,
0050                           gp_Vec&      DNormal,
0051                           gp_Vec&      BiNormal,
0052                           gp_Vec&      DBiNormal) override;
0053
0054   //! compute Trihedron on curve
0055   //! first and second derivatives.
0056   //! Warning : It used only for C2 approximation
0057   Standard_EXPORT bool D2(const double Param,
0058                           gp_Vec&      Tangent,
0059                           gp_Vec&      DTangent,
0060                           gp_Vec&      D2Tangent,
0061                           gp_Vec&      Normal,
0062                           gp_Vec&      DNormal,
0063                           gp_Vec&      D2Normal,
0064                           gp_Vec&      BiNormal,
0065                           gp_Vec&      DBiNormal,
0066                           gp_Vec&      D2BiNormal) override;
0067
0068   //! Returns the number of intervals for continuity <S>.
0069   //! May be one if Continuity(me) >= <S>
0070   Standard_EXPORT int NbIntervals(const GeomAbs_Shape S) const override;
0071
0072   //! Stores in <T> the parameters bounding the intervals
0073   //! of continuity <S>.
0074   //!
0075   //! The array must provide enough room to accommodate
0076   //! for the parameters. i.e. T.Length() > NbIntervals()
0077   Standard_EXPORT void Intervals(NCollection_Array1<double>& T,
0078                                  const GeomAbs_Shape         S) const override;
0079
0080   //! Get average value of Tangent(t) and Normal(t) it is useful to
0081   //! make fast approximation of rational surfaces.
0082   Standard_EXPORT void GetAverageLaw(gp_Vec& ATangent, gp_Vec& ANormal, gp_Vec& ABiNormal) override;
0083
0084   //! Return True.
0085   Standard_EXPORT bool IsConstant() const override;
0086
0087   DEFINE_STANDARD_RTTIEXT(GeomFill_Fixed, GeomFill_TrihedronLaw)
0088
0089 private:
0090   gp_Vec T;
0091   gp_Vec N;
0092   gp_Vec B;
0093 };
0094
0095 #endif // _GeomFill_Fixed_HeaderFile