src/BRepMesh/BRepMesh_WireInterferenceChecker.hxx

   1 // Created on: 2014-06-18
   2 // Created by: Oleg AGASHIN
   3 // Copyright (c) 2011-2014 OPEN CASCADE SAS
   4 //
   5 // This file is part of Open CASCADE Technology software library.
   6 //
   7 // This library is free software; you can redistribute it and/or modify it under
   8 // the terms of the GNU Lesser General Public License version 2.1 as published
   9 // by the Free Software Foundation, with special exception defined in the file
  10 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
  11 // distribution for complete text of the license and disclaimer of any warranty.
  12 //
  13 // Alternatively, this file may be used under the terms of Open CASCADE
  14 // commercial license or contractual agreement.
  15
  16 #ifndef _BRepMesh_WireInterferenceChecker_HeaderFile
  17 #define _BRepMesh_WireInterferenceChecker_HeaderFile
  18
  19 #include <Standard.hxx>
  20 #include <Standard_Mutex.hxx>
  21 #include <BRepMesh_WireChecker.hxx>
  22 #include <BRepMesh_Status.hxx>
  23
  24 #ifdef HAVE_TBB
  25   // paralleling using Intel TBB
  26   #include <tbb/blocked_range.h>
  27 #endif
  28
  29 //! Auxilary class implementing functionality for
  30 //! checking interference between two discretized wires.
  31 class BRepMesh_WireInterferenceChecker
  32 {
  33 public:
  34
  35   //! Enumerates states of segments intersection check.
  36   enum IntFlag
  37   {
  38     NoIntersection,
  39     Cross,
  40     EndPointTouch,
  41     PointOnSegment,
  42     Glued,
  43     Same
  44   };
  45
  46 #ifdef HAVE_TBB
  47   //! Constructor
  48   //! \param theWires wires that should be checked.
  49   //! \param theStatus shared flag to set status of the check.
  50   //! \param theMutex shared mutex for parallel processing.
  51   BRepMesh_WireInterferenceChecker(
  52     const std::vector<BRepMeshCol::SegmentsTree>& theWires,
  53     BRepMesh_Status*                              theStatus,
  54     Standard_Mutex*                               theMutex);
  55
  56   //! Checker's body.
  57   //! \param theWireRange range of wires to be checked.
  58   void operator ()(const tbb::blocked_range<Standard_Integer>& theWireRange) const;
  59 #else
  60   //! Constructor
  61   //! \param theWires wires that should be checked.
  62   //! \param theStatus shared flag to set status of the check.
  63   BRepMesh_WireInterferenceChecker(
  64     const std::vector<BRepMesh_WireChecker::SegmentsTree>& theWires,
  65     BRepMesh_Status*                                       theStatus);
  66 #endif
  67
  68   //! Checker's body.
  69   //! \param theWireId Id of discretized wire to be checked.
  70   void operator ()(const Standard_Integer& theWireId) const;
  71
  72 private:
  73
  74   //! Classifies the point in case of coincidence of two vectors.
  75   //! \param thePoint1 the start point of a segment (base point).
  76   //! \param thePoint2 the end point of a segment.
  77   //! \param thePointToCheck the point to classify.
  78   //! \return zero value if point is out of segment and non zero value
  79   //! if point is between the first and the second point of segment.
  80   static Standard_Integer classifyPoint (const gp_XY& thePoint1,
  81                                          const gp_XY& thePoint2,
  82                                          const gp_XY& thePointToCheck);
  83 private:
  84   const BRepMeshCol::SegmentsTree* myWires;
  85   Standard_Integer                 myWiresNb;
  86   BRepMesh_Status*                 myStatus;
  87
  88 #ifdef HAVE_TBB
  89   Standard_Mutex*                  myMutex;
  90 #endif
  91 };
  92
  93 #endif