include/opencascade/GeomFill_Darboux.hxx

0001 // Created on: 1998-03-04
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_Darboux_HeaderFile
0018 #define _GeomFill_Darboux_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 class gp_Vec;
0028
0029
0030 class GeomFill_Darboux;
0031 DEFINE_STANDARD_HANDLE(GeomFill_Darboux, GeomFill_TrihedronLaw)
0032
0033 //! Defines Darboux case of Frenet Trihedron Law
0034 class GeomFill_Darboux : public GeomFill_TrihedronLaw
0035 {
0036
0037 public:
0038
0039
0040   Standard_EXPORT GeomFill_Darboux();
0041
0042   Standard_EXPORT virtual Handle(GeomFill_TrihedronLaw) Copy() const Standard_OVERRIDE;
0043
0044   //! compute Triedrhon on curve at parameter <Param>
0045   Standard_EXPORT virtual Standard_Boolean D0 (const Standard_Real Param, gp_Vec& Tangent, gp_Vec& Normal, gp_Vec& BiNormal) Standard_OVERRIDE;
0046
0047   //! compute Triedrhon and  derivative Trihedron  on curve
0048   //! at parameter <Param>
0049   //! Warning : It used only for C1 or C2 approximation
0050   Standard_EXPORT virtual Standard_Boolean D1 (const Standard_Real Param, gp_Vec& Tangent, gp_Vec& DTangent, gp_Vec& Normal, gp_Vec& DNormal, gp_Vec& BiNormal, gp_Vec& DBiNormal) Standard_OVERRIDE;
0051
0052   //! compute  Trihedron on curve
0053   //! first and seconde  derivatives.
0054   //! Warning : It used only for C2 approximation
0055   Standard_EXPORT virtual Standard_Boolean D2 (const Standard_Real Param, gp_Vec& Tangent, gp_Vec& DTangent, gp_Vec& D2Tangent, gp_Vec& Normal, gp_Vec& DNormal, gp_Vec& D2Normal, gp_Vec& BiNormal, gp_Vec& DBiNormal, gp_Vec& D2BiNormal) Standard_OVERRIDE;
0056
0057   //! Returns  the number  of  intervals for  continuity
0058   //! <S>.
0059   //! May be one if Continuity(me) >= <S>
0060   Standard_EXPORT virtual Standard_Integer NbIntervals (const GeomAbs_Shape S) const Standard_OVERRIDE;
0061
0062   //! Stores in <T> the  parameters bounding the intervals
0063   //! of continuity <S>.
0064   //!
0065   //! The array must provide  enough room to  accommodate
0066   //! for the parameters. i.e. T.Length() > NbIntervals()
0067   Standard_EXPORT virtual void Intervals (TColStd_Array1OfReal& T, const GeomAbs_Shape S) const Standard_OVERRIDE;
0068
0069   //! Get average value of Tangent(t) and Normal(t) it is usfull to
0070   //! make fast approximation of rational  surfaces.
0071   Standard_EXPORT virtual void GetAverageLaw (gp_Vec& ATangent, gp_Vec& ANormal, gp_Vec& ABiNormal) Standard_OVERRIDE;
0072
0073   //! Say if the law is Constant.
0074   Standard_EXPORT virtual Standard_Boolean IsConstant() const Standard_OVERRIDE;
0075
0076   //! Return False.
0077   Standard_EXPORT virtual Standard_Boolean IsOnlyBy3dCurve() const Standard_OVERRIDE;
0078
0079
0080
0081
0082   DEFINE_STANDARD_RTTIEXT(GeomFill_Darboux,GeomFill_TrihedronLaw)
0083
0084 protected:
0085
0086
0087
0088
0089 private:
0090
0091
0092
0093
0094 };
0095
0096
0097
0098
0099
0100
0101
0102 #endif // _GeomFill_Darboux_HeaderFile