0026106: BRepMesh - revision of data model
[occt.git] / src / BRepMesh / BRepMesh_FaceChecker.hxx
diff --git a/src/BRepMesh/BRepMesh_FaceChecker.hxx b/src/BRepMesh/BRepMesh_FaceChecker.hxx
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+// Created on: 2016-07-04
+// Copyright (c) 2016 OPEN CASCADE SAS
+// Created by: Oleg AGASHIN
+//
+// This file is part of Open CASCADE Technology software library.
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
+// by the Free Software Foundation, with special exception defined in the file
+// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
+// distribution for complete text of the license and disclaimer of any warranty.
+//
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement.
+
+#ifndef _BRepMesh_FaceChecker_HeaderFile
+#define _BRepMesh_FaceChecker_HeaderFile
+
+#include <IMeshTools_Parameters.hxx>
+#include <Standard_Transient.hxx>
+#include <IMeshData_Face.hxx>
+#include <Standard_Type.hxx>
+#include <NCollection_Shared.hxx>
+
+//! Auxiliary class checking wires of target face for self-intersections.
+//! Explodes wires of discrete face on sets of segments using tessellation 
+//! data stored in model. Each segment is then checked for intersection with
+//! other ones. All collisions are registerd and returned as result of check.
+class BRepMesh_FaceChecker : public Standard_Transient
+{
+public: //! @name mesher API
+
+  //! Identifies segment inside face.
+  struct Segment
+  {
+    IMeshData::IEdgePtr      EdgePtr;
+    gp_Pnt2d*                Point1; // \ Use explicit pointers to points instead of accessing
+    gp_Pnt2d*                Point2; // / using indices.
+
+    Segment()
+      : Point1(NULL)
+      , Point2(NULL)
+    {
+    }
+
+    Segment(const IMeshData::IEdgePtr& theEdgePtr,
+            gp_Pnt2d*                  thePoint1,
+            gp_Pnt2d*                  thePoint2)
+      : EdgePtr(theEdgePtr)
+      , Point1(thePoint1)
+      , Point2(thePoint2)
+    {
+    }
+  };
+
+  typedef NCollection_Shared<NCollection_Vector<Segment> >                          Segments;
+  typedef NCollection_Shared<NCollection_Array1<Handle(Segments)> >                 ArrayOfSegments;
+  typedef NCollection_Shared<NCollection_Array1<Handle(IMeshData::BndBox2dTree)> >  ArrayOfBndBoxTree;
+  typedef NCollection_Shared<NCollection_Array1<Handle(IMeshData::MapOfIEdgePtr)> > ArrayOfMapOfIEdgePtr;
+
+
+  //! Default constructor
+  Standard_EXPORT BRepMesh_FaceChecker(const IMeshData::IFaceHandle& theFace,
+                                       const IMeshTools_Parameters&  theParameters);
+
+  //! Destructor
+  Standard_EXPORT virtual ~BRepMesh_FaceChecker();
+
+  //! Performs check wires of the face for intersections.
+  //! @return True if there is no intersection, False elsewhere.
+  Standard_EXPORT Standard_Boolean Perform();
+
+  //! Returns intersecting edges.
+  const Handle(IMeshData::MapOfIEdgePtr)& GetIntersectingEdges() const
+  {
+    return myIntersectingEdges;
+  }
+
+  //! Checks wire with the given index for intersection with others.
+  inline void operator()(const Standard_Integer theWireIndex) const
+  {
+    perform(theWireIndex);
+  }
+
+  DEFINE_STANDARD_RTTI_INLINE(BRepMesh_FaceChecker, Standard_Transient)
+
+private:
+
+  //! Returns True in case if check can be performed in parallel mode.
+  inline Standard_Boolean isParallel() const
+  {
+    return (myParameters.InParallel && myDFace->WiresNb() > 1);
+  }
+
+  //! Collects face segments.
+  void collectSegments();
+
+  //! Collects intersecting edges.
+  void collectResult();
+
+  //! Checks wire with the given index for intersection with others.
+  void perform(const Standard_Integer theWireIndex) const;
+
+private:
+
+  BRepMesh_FaceChecker (const BRepMesh_FaceChecker& theOther);
+
+  void operator=(const BRepMesh_FaceChecker& theOther);
+
+private:
+
+  IMeshData::IFaceHandle            myDFace;
+  const IMeshTools_Parameters&      myParameters;
+
+  Handle(ArrayOfSegments)           myWiresSegments;
+  Handle(ArrayOfBndBoxTree)         myWiresBndBoxTree;
+  Handle(ArrayOfMapOfIEdgePtr)      myWiresIntersectingEdges;
+  Handle(IMeshData::MapOfIEdgePtr)  myIntersectingEdges;
+
+};
+
+#endif