0026106: BRepMesh - revision of data model
[occt.git] / 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 registerd 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       : Point1(NULL)
42       , Point2(NULL)
43     {
44     }
45
46     Segment(const IMeshData::IEdgePtr& theEdgePtr,
47             gp_Pnt2d*                  thePoint1,
48             gp_Pnt2d*                  thePoint2)
49       : EdgePtr(theEdgePtr)
50       , Point1(thePoint1)
51       , Point2(thePoint2)
52     {
53     }
54   };
55
56   typedef NCollection_Shared<NCollection_Vector<Segment> >                          Segments;
57   typedef NCollection_Shared<NCollection_Array1<Handle(Segments)> >                 ArrayOfSegments;
58   typedef NCollection_Shared<NCollection_Array1<Handle(IMeshData::BndBox2dTree)> >  ArrayOfBndBoxTree;
59   typedef NCollection_Shared<NCollection_Array1<Handle(IMeshData::MapOfIEdgePtr)> > ArrayOfMapOfIEdgePtr;
60
61
62   //! Default constructor
63   Standard_EXPORT BRepMesh_FaceChecker(const IMeshData::IFaceHandle& theFace,
64                                        const IMeshTools_Parameters&  theParameters);
65
66   //! Destructor
67   Standard_EXPORT virtual ~BRepMesh_FaceChecker();
68
69   //! Performs check wires of the face for intersections.
70   //! @return True if there is no intersection, False elsewhere.
71   Standard_EXPORT Standard_Boolean Perform();
72
73   //! Returns intersecting edges.
74   const Handle(IMeshData::MapOfIEdgePtr)& GetIntersectingEdges() const
75   {
76     return myIntersectingEdges;
77   }
78
79   //! Checks wire with the given index for intersection with others.
80   inline void operator()(const Standard_Integer theWireIndex) const
81   {
82     perform(theWireIndex);
83   }
84
85   DEFINE_STANDARD_RTTI_INLINE(BRepMesh_FaceChecker, Standard_Transient)
86
87 private:
88
89   //! Returns True in case if check can be performed in parallel mode.
90   inline Standard_Boolean isParallel() const
91   {
92     return (myParameters.InParallel && myDFace->WiresNb() > 1);
93   }
94
95   //! Collects face segments.
96   void collectSegments();
97
98   //! Collects intersecting edges.
99   void collectResult();
100
101   //! Checks wire with the given index for intersection with others.
102   void perform(const Standard_Integer theWireIndex) const;
103
104 private:
105
106   BRepMesh_FaceChecker (const BRepMesh_FaceChecker& theOther);
107
108   void operator=(const BRepMesh_FaceChecker& theOther);
109
110 private:
111
112   IMeshData::IFaceHandle            myDFace;
113   const IMeshTools_Parameters&      myParameters;
114
115   Handle(ArrayOfSegments)           myWiresSegments;
116   Handle(ArrayOfBndBoxTree)         myWiresBndBoxTree;
117   Handle(ArrayOfMapOfIEdgePtr)      myWiresIntersectingEdges;
118   Handle(IMeshData::MapOfIEdgePtr)  myIntersectingEdges;
119
120 };
121
122 #endif