include/opencascade/Extrema_ExtPExtS.hxx

0001 // Created on: 1999-09-16
0002 // Created by: Edward AGAPOV
0003 // Copyright (c) 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 _Extrema_ExtPExtS_HeaderFile
0018 #define _Extrema_ExtPExtS_HeaderFile
0019
0020 #include <Extrema_GenExtPS.hxx>
0021 #include <Extrema_FuncPSNorm.hxx>
0022 #include <Extrema_POnSurf.hxx>
0023 #include <GeomAdaptor_SurfaceOfLinearExtrusion.hxx>
0024 #include <gp_Ax2.hxx>
0025 #include <gp_Vec.hxx>
0026
0027 DEFINE_STANDARD_HANDLE(Extrema_ExtPExtS, Standard_Transient)
0028
0029 //! It calculates all the extremum (minimum and
0030 //! maximum) distances between a point and a linear
0031 //! extrusion surface.
0032 class Extrema_ExtPExtS : public Standard_Transient
0033 {
0034
0035 public:
0036   Standard_EXPORT Extrema_ExtPExtS();
0037
0038   //! It calculates all the distances between a point
0039   //! from gp and a Surface.
0040   Standard_EXPORT Extrema_ExtPExtS(const gp_Pnt&                                       P,
0041                                    const Handle(GeomAdaptor_SurfaceOfLinearExtrusion)& S,
0042                                    const Standard_Real                                 Umin,
0043                                    const Standard_Real                                 Usup,
0044                                    const Standard_Real                                 Vmin,
0045                                    const Standard_Real                                 Vsup,
0046                                    const Standard_Real                                 TolU,
0047                                    const Standard_Real                                 TolV);
0048
0049   //! It calculates all the distances between a point
0050   //! from gp and a Surface.
0051   Standard_EXPORT Extrema_ExtPExtS(const gp_Pnt&                                       P,
0052                                    const Handle(GeomAdaptor_SurfaceOfLinearExtrusion)& S,
0053                                    const Standard_Real                                 TolU,
0054                                    const Standard_Real                                 TolV);
0055
0056   //! Initializes the fields of the algorithm.
0057   Standard_EXPORT void Initialize(const Handle(GeomAdaptor_SurfaceOfLinearExtrusion)& S,
0058                                   const Standard_Real                                 Uinf,
0059                                   const Standard_Real                                 Usup,
0060                                   const Standard_Real                                 Vinf,
0061                                   const Standard_Real                                 Vsup,
0062                                   const Standard_Real                                 TolU,
0063                                   const Standard_Real                                 TolV);
0064
0065   Standard_EXPORT void Perform(const gp_Pnt& P);
0066
0067   //! Returns True if the distances are found.
0068   Standard_EXPORT Standard_Boolean IsDone() const;
0069
0070   //! Returns the number of extremum distances.
0071   Standard_EXPORT Standard_Integer NbExt() const;
0072
0073   //! Returns the value of the Nth resulting square distance.
0074   Standard_EXPORT Standard_Real SquareDistance(const Standard_Integer N) const;
0075
0076   //! Returns the point of the Nth resulting distance.
0077   Standard_EXPORT const Extrema_POnSurf& Point(const Standard_Integer N) const;
0078
0079   DEFINE_STANDARD_RTTIEXT(Extrema_ExtPExtS, Standard_Transient)
0080
0081 protected:
0082 private:
0083   Standard_EXPORT void MakePreciser(Standard_Real&         U,
0084                                     const gp_Pnt&          P,
0085                                     const Standard_Boolean isMin,
0086                                     const gp_Ax2&          OrtogSection) const;
0087
0088   Standard_Real                                myuinf;
0089   Standard_Real                                myusup;
0090   Standard_Real                                mytolu;
0091   Standard_Real                                myvinf;
0092   Standard_Real                                myvsup;
0093   Standard_Real                                mytolv;
0094   Extrema_FuncPSNorm                           myF;
0095   Handle(Adaptor3d_Curve)                      myC;
0096   Handle(GeomAdaptor_SurfaceOfLinearExtrusion) myS;
0097   gp_Vec                                       myDirection;
0098   gp_Ax2                                       myPosition;
0099   Extrema_GenExtPS                             myExtPS;
0100   Standard_Boolean                             myIsAnalyticallyComputable;
0101   Standard_Boolean                             myDone;
0102   Standard_Integer                             myNbExt;
0103   Standard_Real                                mySqDist[4];
0104   Extrema_POnSurf                              myPoint[4];
0105 };
0106
0107 #endif // _Extrema_ExtPExtS_HeaderFile