src/BRepMesh/BRepMesh_FaceChecker.hxx

   1 // Created on: 2016-07-04
   2 // Copyright (c) 2016 OPEN CASCADE SAS
   3 // Created by: Oleg AGASHIN
   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_FaceChecker_HeaderFile
  17 #define _BRepMesh_FaceChecker_HeaderFile
  18
  19 #include <IMeshTools_Parameters.hxx>
  20 #include <Standard_Transient.hxx>
  21 #include <IMeshData_Face.hxx>
  22 #include <Standard_Type.hxx>
  23 #include <NCollection_Shared.hxx>
  24
  25 //! Auxiliary class checking wires of target face for self-intersections.
  26 //! Explodes wires of discrete face on sets of segments using tessellation
  27 //! data stored in model. Each segment is then checked for intersection with
  28 //! other ones. All collisions are registered and returned as result of check.
  29 class BRepMesh_FaceChecker : public Standard_Transient
  30 {
  31 public: //! @name mesher API
  32
  33   //! Identifies segment inside face.
  34   struct Segment
  35   {
  36     IMeshData::IEdgePtr      EdgePtr;
  37     gp_Pnt2d*                Point1; // \ Use explicit pointers to points instead of accessing
  38     gp_Pnt2d*                Point2; // / using indices.
  39
  40     Segment()
  41     : EdgePtr(NULL),
  42       Point1(NULL),
  43       Point2(NULL)
  44     {
  45     }
  46
  47     Segment(const IMeshData::IEdgePtr& theEdgePtr,
  48             gp_Pnt2d*                  thePoint1,
  49             gp_Pnt2d*                  thePoint2)
  50       : EdgePtr(theEdgePtr)
  51       , Point1(thePoint1)
  52       , Point2(thePoint2)
  53     {
  54     }
  55   };
  56
  57   typedef NCollection_Shared<NCollection_Vector<Segment> >                          Segments;
  58   typedef NCollection_Shared<NCollection_Array1<Handle(Segments)> >                 ArrayOfSegments;
  59   typedef NCollection_Shared<NCollection_Array1<Handle(IMeshData::BndBox2dTree)> >  ArrayOfBndBoxTree;
  60   typedef NCollection_Shared<NCollection_Array1<Handle(IMeshData::MapOfIEdgePtr)> > ArrayOfMapOfIEdgePtr;
  61
  62
  63   //! Default constructor
  64   Standard_EXPORT BRepMesh_FaceChecker(const IMeshData::IFaceHandle& theFace,
  65                                        const IMeshTools_Parameters&  theParameters);
  66
  67   //! Destructor
  68   Standard_EXPORT virtual ~BRepMesh_FaceChecker();
  69
  70   //! Performs check wires of the face for intersections.
  71   //! @return True if there is no intersection, False elsewhere.
  72   Standard_EXPORT Standard_Boolean Perform();
  73
  74   //! Returns intersecting edges.
  75   const Handle(IMeshData::MapOfIEdgePtr)& GetIntersectingEdges() const
  76   {
  77     return myIntersectingEdges;
  78   }
  79
  80   //! Checks wire with the given index for intersection with others.
  81   void operator()(const Standard_Integer theWireIndex) const
  82   {
  83     perform(theWireIndex);
  84   }
  85
  86   DEFINE_STANDARD_RTTIEXT(BRepMesh_FaceChecker, Standard_Transient)
  87
  88 private:
  89
  90   //! Returns True in case if check can be performed in parallel mode.
  91   Standard_Boolean isParallel() const
  92   {
  93     return (myParameters.InParallel && myDFace->WiresNb() > 1);
  94   }
  95
  96   //! Collects face segments.
  97   void collectSegments();
  98
  99   //! Collects intersecting edges.
 100   void collectResult();
 101
 102   //! Checks wire with the given index for intersection with others.
 103   void perform(const Standard_Integer theWireIndex) const;
 104
 105 private:
 106
 107   BRepMesh_FaceChecker (const BRepMesh_FaceChecker& theOther);
 108
 109   void operator=(const BRepMesh_FaceChecker& theOther);
 110
 111 private:
 112
 113   IMeshData::IFaceHandle            myDFace;
 114   const IMeshTools_Parameters&      myParameters;
 115
 116   Handle(ArrayOfSegments)           myWiresSegments;
 117   Handle(ArrayOfBndBoxTree)         myWiresBndBoxTree;
 118   Handle(ArrayOfMapOfIEdgePtr)      myWiresIntersectingEdges;
 119   Handle(IMeshData::MapOfIEdgePtr)  myIntersectingEdges;
 120
 121 };
 122
 123 #endif