roll back

src/SMESH/SMESH_MeshEditor.cxx

@@ -38,12 +38,11 @@
 #include "SMESHDS_Group.hxx"
 #include "SMESHDS_Mesh.hxx"
 
-#include "SMESH_Algo.hxx"
+#include "SMESH_subMesh.hxx"
 #include "SMESH_ControlsDef.hxx"
-#include "SMESH_Group.hxx"
 #include "SMESH_MesherHelper.hxx"
 #include "SMESH_OctreeNode.hxx"
-#include "SMESH_subMesh.hxx"
+#include "SMESH_Group.hxx"
 
 #include "utilities.h"
 
@@ -52,17 +51,11 @@
 #include <BRep_Tool.hxx>
 #include <ElCLib.hxx>
 #include <Extrema_GenExtPS.hxx>
-#include <Extrema_POnCurv.hxx>
 #include <Extrema_POnSurf.hxx>
-#include <GC_MakeSegment.hxx>
 #include <Geom2d_Curve.hxx>
-#include <GeomAPI_ExtremaCurveCurve.hxx>
 #include <GeomAdaptor_Surface.hxx>
 #include <Geom_Curve.hxx>
-#include <Geom_Line.hxx>
 #include <Geom_Surface.hxx>
-#include <IntAna_IntConicQuad.hxx>
-#include <IntAna_Quadric.hxx>
 #include <Precision.hxx>
 #include <TColStd_ListOfInteger.hxx>
 #include <TopAbs_State.hxx>
@@ -82,7 +75,6 @@
 #include <gp_Vec.hxx>
 #include <gp_XY.hxx>
 #include <gp_XYZ.hxx>
-
 #include <math.h>
 
 #include <map>
@@ -1110,7 +1102,6 @@ bool SMESH_MeshEditor::QuadToTri (TIDSortedElemSet &                   theElems,
 //function : BestSplit
 //purpose  : Find better diagonal for cutting.
 //=======================================================================
-
 int SMESH_MeshEditor::BestSplit (const SMDS_MeshElement*              theQuad,
                                  SMESH::Controls::NumericalFunctorPtr theCrit)
 {
@@ -1152,164 +1143,6 @@ int SMESH_MeshEditor::BestSplit (const SMDS_MeshElement*              theQuad,
   return -1;
 }
 
-namespace
-{
-  // Methods of splitting volumes into tetra
-
-  const int theHexTo5[5*4] =
-    {
-      0, 1, 5, 2,
-      0, 4, 5, 7,
-      0, 3, 7, 2,
-      5, 6, 7, 2,
-      0, 2, 5, 7
-    };
-  const int theHexTo6[6*4] =
-    {
-      0, 1, 5, 2,
-      0, 4, 5, 7,
-      0, 3, 7, 2,
-      5, 6, 7, 2,
-      0, 2, 5, 7
-    };
-  const int thePyraTo2[2*4] =
-    {
-      0, 1, 2, 4,
-      0, 2, 3, 4
-    };
-
-  const int thePentaTo8[8*4] =
-    {
-      0, 1, 2, 6,
-      3, 5, 4, 6,
-      0, 3, 4, 6,
-      0, 4, 1, 6,
-      1, 4, 5, 6,
-      1, 5, 2, 6,
-      2, 5, 3, 6,
-      2, 3, 0, 6
-    };
-
-  struct TSplitMethod
-  {
-    int        _nbTetra;
-    const int* _connectivity;
-    bool       _addNode; // additional node is to be created
-    TSplitMethod( int nbTet=0, const int* conn=0, bool addNode=false)
-      : _nbTetra(nbTet), _connectivity(conn), _addNode(addNode) {}
-  };
-
-  /*!
-   * \brief return TSplitMethod for the given element
-   */
-  TSplitMethod getSplitMethod( const SMDS_MeshElement* vol, const int theMethodFlags)
-  {
-    TSplitMethod method;
-    if ( vol->GetType() == SMDSAbs_Volume && !vol->IsPoly())
-      switch ( vol->NbNodes() )
-      {
-      case 8:
-      case 20:
-        if ( theMethodFlags & SMESH_MeshEditor::HEXA_TO_5 )
-          method = TSplitMethod( 5, theHexTo5 );
-        else
-          method = TSplitMethod( 6, theHexTo6 );
-        break;
-      case 5:
-      case 13:
-        method = TSplitMethod( 2, thePyraTo2 );
-        break;
-      case 6:
-      case 15:
-        method = TSplitMethod( 8, thePentaTo8, /*addNode=*/true );
-        break;
-      default:;
-      }
-    return method;
-  }
-}
-
-//=======================================================================
-//function : SplitVolumesIntoTetra
-//purpose  : Split volumic elements into tetrahedra.
-//=======================================================================
-
-void SMESH_MeshEditor::SplitVolumesIntoTetra (const TIDSortedElemSet & theElems,
-                                              const int                theMethodFlags)
-{
-  // sdt-like iterator on coordinates of nodes of mesh element
-  typedef SMDS_StdIterator< TNodeXYZ, SMDS_ElemIteratorPtr > NXyzIterator;
-  NXyzIterator xyzEnd;
-
-  SMESH_MesherHelper helper( *GetMesh());
-
-  TIDSortedElemSet::const_iterator elem = theElems.begin();
-  for ( ; elem != theElems.end(); ++elem )
-  {
-    SMDSAbs_EntityType geomType = (*elem)->GetEntityType();
-    if ( geomType <= SMDSEntity_Quad_Tetra )
-      continue; // tetra or face or edge
-
-    if ( (*elem)->IsQuadratic() )
-    {
-      // add quadratic links to the helper
-      SMDS_VolumeTool vol( *elem );
-      for ( int iF = 0; iF < vol.NbFaces(); ++iF )
-      {
-        const SMDS_MeshNode** fNodes = vol.GetFaceNodes( iF );
-        for ( int iN = 0; iN < vol.NbFaceNodes( iF ); iN += 2)
-          helper.AddTLinkNode( fNodes[iF], fNodes[iF+2], fNodes[iF+1] );
-      }
-      helper.SetIsQuadratic( true );
-    }
-    else
-    {
-      helper.SetIsQuadratic( false );
-    }
-
-    vector<const SMDS_MeshElement* > tetras; // splits of a volume
-
-    if ( geomType == SMDSEntity_Polyhedra )
-    {
-      // Each face of a polyhedron is split into triangles and
-      // each of triangles and a cell barycenter form a tetrahedron.
-
-      SMDS_VolumeTool vol( *elem );
-
-      // make a node at barycenter
-      gp_XYZ gc = std::accumulate( NXyzIterator((*elem)->nodesIterator()), xyzEnd,gp_XYZ(0,0,0));
-      gc /= vol.NbNodes();
-      SMDS_MeshNode* gcNode = GetMeshDS()->AddNode( gc.X(), gc.Y(), gc.Z() );
-
-      for ( int iF = 0; iF < vol.NbFaces(); ++iF )
-      {
-        const SMDS_MeshNode** fNodes = vol.GetFaceNodes( iF );
-        int nbFNodes = vol.NbFaceNodes( iF );
-        int nbTria = nbFNodes - 2;
-        bool extFace =  vol.IsFaceExternal( iF );
-        SMDS_MeshElement* tet;
-        for ( int i = 0; i < nbTria; ++i )
-        {
-          if ( extFace )
-            tet = helper.AddVolume( fNodes[0], fNodes[i+1], fNodes[i+2], gcNode );
-          else
-            tet = helper.AddVolume( fNodes[0], fNodes[i+2], fNodes[i+1], gcNode );
-          tetras.push_back( tet );
-        }
-      }
-
-    }
-    else
-    {
-
-      TSplitMethod splitMethod = getSplitMethod( *elem, theMethodFlags );
-      if ( splitMethod._nbTetra < 1 ) continue;
-
-      vector<const SMDS_MeshNode*> volNodes( (*elem)->begin_nodes(), (*elem)->end_nodes());
-    }
-  }
-}
-
 //=======================================================================
 //function : AddToSameGroups
 //purpose  : add elemToAdd to the groups the elemInGroups belongs to
@@ -5751,7 +5584,6 @@ namespace // Utils used in SMESH_ElementSearcherImpl::FindElementsByPoint()
 
     ElementBndBoxTree(const SMDS_Mesh& mesh, SMDSAbs_ElementType elemType);
     void getElementsNearPoint( const gp_Pnt& point, TIDSortedElemSet& foundElems);
-    void getElementsNearLine ( const gp_Ax1& line, TIDSortedElemSet& foundElems);
     ~ElementBndBoxTree();
 
   protected:
@@ -5877,31 +5709,6 @@ namespace // Utils used in SMESH_ElementSearcherImpl::FindElementsByPoint()
     }
   }
 
-  //================================================================================
-  /*!
-   * \brief Return elements which can be intersected by the line
-   */
-  //================================================================================
-
-  void ElementBndBoxTree::getElementsNearLine( const gp_Ax1&     line,
-                                               TIDSortedElemSet& foundElems)
-  {
-    if ( level() && getBox().IsOut( line ))
-      return;
-
-    if ( isLeaf() )
-    {
-      for ( int i = 0; i < _elements.size(); ++i )
-        if ( !_elements[i]->IsOut( line ))
-          foundElems.insert( _elements[i]->_element );
-    }
-    else
-    {
-      for (int i = 0; i < 8; i++)
-        ((ElementBndBoxTree*) myChildren[i])->getElementsNearLine( line, foundElems );
-    }
-  }
-
   //================================================================================
   /*!
    * \brief Construct the element box
@@ -5922,78 +5729,60 @@ namespace // Utils used in SMESH_ElementSearcherImpl::FindElementsByPoint()
 
 //=======================================================================
 /*!
- * \brief Implementation of search for the elements by point and
+ * \brief Implementation of search for the elements by point
- *        of classification of point in 2D mesh
  */
 //=======================================================================
 
 struct SMESH_ElementSearcherImpl: public SMESH_ElementSearcher
 {
-  SMESHDS_Mesh*                _mesh;
+  SMESHDS_Mesh*           _mesh;
-  ElementBndBoxTree*           _ebbTree;
+  ElementBndBoxTree*      _ebbTree;
-  SMESH_NodeSearcherImpl*      _nodeSearcher;
+  SMESH_NodeSearcherImpl* _nodeSearcher;
-  SMDSAbs_ElementType          _elementType;
+  SMDSAbs_ElementType     _elementType;
-  double                       _tolerance;
-  set<const SMDS_MeshElement*> _internalFaces;
 
-  SMESH_ElementSearcherImpl( SMESHDS_Mesh& mesh )
+  SMESH_ElementSearcherImpl( SMESHDS_Mesh& mesh ): _mesh(&mesh),_ebbTree(0),_nodeSearcher(0) {}
-    : _mesh(&mesh),_ebbTree(0),_nodeSearcher(0), _tolerance(-1) {}
   ~SMESH_ElementSearcherImpl()
   {
     if ( _ebbTree )      delete _ebbTree;      _ebbTree      = 0;
     if ( _nodeSearcher ) delete _nodeSearcher; _nodeSearcher = 0;
   }
-  virtual int FindElementsByPoint(const gp_Pnt&                      point,
-                                  SMDSAbs_ElementType                type,
-                                  vector< const SMDS_MeshElement* >& foundElements);
-  virtual TopAbs_State GetPointState(const gp_Pnt& point);
 
-  struct TInters //!< data of intersection of the line and the mesh face
+  /*!
+   * \brief Find elements of given type where the given point is IN or ON.
+   *        Returns nb of found elements and elements them-selves.
+   *
+   * 'ALL' type means elements of any type excluding nodes and 0D elements
+   */
+  int FindElementsByPoint(const gp_Pnt&                      point,
+                          SMDSAbs_ElementType                type,
+                          vector< const SMDS_MeshElement* >& foundElements)
   {
-    const SMDS_MeshElement* _face;
+    foundElements.clear();
-    gp_Vec                  _faceNorm;
-    bool                    _coincides; //!< the line lays in face plane
-    TInters(const SMDS_MeshElement* face, const gp_Vec& faceNorm, bool coinc=false)
-      : _face(face), _faceNorm( faceNorm ), _coincides( coinc ) {}
-  };
-  double getTolerance();
-  bool getIntersParamOnLine(const gp_Lin& line, const SMDS_MeshElement* face,
-                            const double tolerance, double & param);
-  void findOuterBoundary();
-  bool isOuterBoundary(const SMDS_MeshElement* face) const { return !_internalFaces.count(face);}
-};
 
-//=======================================================================
-/*!
- * \brief define tolerance for search
- */
-//=======================================================================
-
-double SMESH_ElementSearcherImpl::getTolerance()
-{
-  if ( _tolerance < 0 )
-  {
     const SMDS_MeshInfo& meshInfo = _mesh->GetMeshInfo();
 
-    _tolerance = 0;
+    // -----------------
+    // define tolerance
+    // -----------------
+    double tolerance = 0;
     if ( _nodeSearcher && meshInfo.NbNodes() > 1 )
     {
       double boxSize = _nodeSearcher->getTree()->maxSize();
-      _tolerance = 1e-8 * boxSize/* / meshInfo.NbNodes()*/;
+      tolerance = 1e-8 * boxSize/* / meshInfo.NbNodes()*/;
     }
     else if ( _ebbTree && meshInfo.NbElements() > 0 )
     {
       double boxSize = _ebbTree->maxSize();
-      _tolerance = 1e-8 * boxSize/* / meshInfo.NbElements()*/;
+      tolerance = 1e-8 * boxSize/* / meshInfo.NbElements()*/;
     }
-    if ( _tolerance == 0 )
+    if ( tolerance == 0 )
     {
       // define tolerance by size of a most complex element
       int complexType = SMDSAbs_Volume;
       while ( complexType > SMDSAbs_All &&
               meshInfo.NbElements( SMDSAbs_ElementType( complexType )) < 1 )
         --complexType;
-      if ( complexType == SMDSAbs_All ) return 0; // empty mesh
+      if ( complexType == SMDSAbs_All ) return foundElements.size(); // empty mesh
 
       double elemSize;
       if ( complexType == int( SMDSAbs_Node ))
@@ -6015,325 +5804,50 @@ double SMESH_ElementSearcherImpl::getTolerance()
           elemSize = max( dist, elemSize );
         }
       }
-      _tolerance = 1e-6 * elemSize;
+      tolerance = 1e-6 * elemSize;
     }
-  }
-  return _tolerance;
-}
 
-//================================================================================
+    // =================================================================================
-/*!
+    if ( type == SMDSAbs_Node || type == SMDSAbs_0DElement )
- * \brief Find intersection of the line and an edge of face and return parameter on line
- */
-//================================================================================
-
-bool SMESH_ElementSearcherImpl::getIntersParamOnLine(const gp_Lin&           line,
-                                                     const SMDS_MeshElement* face,
-                                                     const double            tol,
-                                                     double &                param)
-{
-  int nbInts = 0;
-  param = 0;
-
-  GeomAPI_ExtremaCurveCurve anExtCC;
-  Handle(Geom_Curve) lineCurve = new Geom_Line( line );
-  
-  int nbNodes = face->IsQuadratic() ? face->NbNodes()/2 : face->NbNodes();
-  for ( int i = 0; i < nbNodes && nbInts < 2; ++i )
-  {
-    GC_MakeSegment edge( SMESH_MeshEditor::TNodeXYZ( face->GetNode( i )),
-                         SMESH_MeshEditor::TNodeXYZ( face->GetNode( (i+1)%nbNodes) )); 
-    anExtCC.Init( lineCurve, edge);
-    if ( anExtCC.NbExtrema() > 0 && anExtCC.LowerDistance() <= tol)
     {
-      Quantity_Parameter pl, pe;
+      if ( !_nodeSearcher )
-      anExtCC.LowerDistanceParameters( pl, pe );
+        _nodeSearcher = new SMESH_NodeSearcherImpl( _mesh );
-      param += pl;
-      if ( ++nbInts == 2 )
-        break;
-    }
-  }
-  if ( nbInts > 0 ) param /= nbInts;
-  return nbInts > 0;
-}
-//================================================================================
-/*!
- * \brief Find all faces belonging to the outer boundary of mesh
- */
-//================================================================================
 
-void SMESH_ElementSearcherImpl::findOuterBoundary()
+      const SMDS_MeshNode* closeNode = _nodeSearcher->FindClosestTo( point );
-{
+      if ( !closeNode ) return foundElements.size();
-  
-}
 
-//=======================================================================
+      if ( point.Distance( SMESH_MeshEditor::TNodeXYZ( closeNode )) > tolerance )
-/*!
+        return foundElements.size(); // to far from any node
- * \brief Find elements of given type where the given point is IN or ON.
- *        Returns nb of found elements and elements them-selves.
- *
- * 'ALL' type means elements of any type excluding nodes and 0D elements
- */
-//=======================================================================
 
-int SMESH_ElementSearcherImpl::
+      if ( type == SMDSAbs_Node )
-FindElementsByPoint(const gp_Pnt&                      point,
-                    SMDSAbs_ElementType                type,
-                    vector< const SMDS_MeshElement* >& foundElements)
-{
-  foundElements.clear();
-
-  double tolerance = getTolerance();
-
-  // =================================================================================
-  if ( type == SMDSAbs_Node || type == SMDSAbs_0DElement )
-  {
-    if ( !_nodeSearcher )
-      _nodeSearcher = new SMESH_NodeSearcherImpl( _mesh );
-
-    const SMDS_MeshNode* closeNode = _nodeSearcher->FindClosestTo( point );
-    if ( !closeNode ) return foundElements.size();
-
-    if ( point.Distance( SMESH_MeshEditor::TNodeXYZ( closeNode )) > tolerance )
-      return foundElements.size(); // to far from any node
-
-    if ( type == SMDSAbs_Node )
-    {
-      foundElements.push_back( closeNode );
-    }
-    else
-    {
-      SMDS_ElemIteratorPtr elemIt = closeNode->GetInverseElementIterator( SMDSAbs_0DElement );
-      while ( elemIt->more() )
-        foundElements.push_back( elemIt->next() );
-    }
-  }
-  // =================================================================================
-  else // elements more complex than 0D
-  {
-    if ( !_ebbTree || _elementType != type )
-    {
-      if ( _ebbTree ) delete _ebbTree;
-      _ebbTree = new ElementBndBoxTree( *_mesh, _elementType = type );
-    }
-    TIDSortedElemSet suspectElems;
-    _ebbTree->getElementsNearPoint( point, suspectElems );
-    TIDSortedElemSet::iterator elem = suspectElems.begin();
-    for ( ; elem != suspectElems.end(); ++elem )
-      if ( !SMESH_MeshEditor::isOut( *elem, point, tolerance ))
-        foundElements.push_back( *elem );
-  }
-  return foundElements.size();
-}
-
-//================================================================================
-/*!
- * \brief Classify the given point in the closed 2D mesh
- */
-//================================================================================
-
-TopAbs_State SMESH_ElementSearcherImpl::GetPointState(const gp_Pnt& point)
-{
-  double tolerance = getTolerance();
-  if ( !_ebbTree || _elementType != SMDSAbs_Face )
-  {
-    if ( _ebbTree ) delete _ebbTree;
-    _ebbTree = new ElementBndBoxTree( *_mesh, _elementType = SMDSAbs_Face );
-  }
-  // algo: analyse transition of a line starting at the point through mesh boundary;
-  // try several lines, if none of attemps gives a clear answer, we give up as the
-  // task can be too complex including internal boundaries, concave surfaces etc.
-
-  const int nbAxes = 3;
-  gp_Dir axisDir[ nbAxes ] = { gp::DX(), gp::DY(), gp::DZ() };
-  map< double, TInters >   paramOnLine2TInters[ nbAxes ];
-  list< TInters > tangentInters[ nbAxes ]; // of faces whose plane includes the line
-  multimap< int, int > nbInt2Axis; // to find the simplest case
-  for ( int axis = 0; axis < nbAxes; ++axis )
-  {
-    gp_Ax1 lineAxis( point, axisDir[axis]);
-    gp_Lin line    ( lineAxis );
-
-    TIDSortedElemSet suspectFaces; // faces possibly intersecting the line
-    _ebbTree->getElementsNearLine( lineAxis, suspectFaces );
-
-    // Intersect faces with the line
-
-    map< double, TInters > & u2inters = paramOnLine2TInters[ axis ];
-    TIDSortedElemSet::iterator face = suspectFaces.begin();
-    for ( ; face != suspectFaces.end(); ++face )
-    {
-      // get face plane
-      gp_XYZ fNorm;
-      if ( !SMESH_Algo::FaceNormal( *face, fNorm, /*normalized=*/false)) continue;
-      gp_Pln facePlane( SMESH_MeshEditor::TNodeXYZ( (*face)->GetNode(0)), fNorm );
-
-      // intersection
-      IntAna_IntConicQuad intersection( line, IntAna_Quadric( facePlane ));
-      if ( !intersection.IsDone() )
-        continue;
-      if ( intersection.IsInQuadric() )
       {
-        tangentInters[ axis ].push_back( TInters( *face, fNorm, true ));
+        foundElements.push_back( closeNode );
       }
-      else if ( ! intersection.IsParallel() && intersection.NbPoints() > 0 )
+      else
       {
-        gp_Pnt intersectionPoint = intersection.Point(1);
+        SMDS_ElemIteratorPtr elemIt = closeNode->GetInverseElementIterator( SMDSAbs_0DElement );
-        if ( !SMESH_MeshEditor::isOut( *face, intersectionPoint, tolerance ))
+        while ( elemIt->more() )
-          u2inters.insert(make_pair( intersection.ParamOnConic(1), TInters( *face, fNorm )));
+          foundElements.push_back( elemIt->next() );
       }
     }
-    // Analyse intersections roughly
+    // =================================================================================
-
+    else // elements more complex than 0D
-    int nbInter = u2inters.size();
-    if ( nbInter == 0 )
-      return TopAbs_OUT; 
-
-    double f = u2inters.begin()->first, l = u2inters.rbegin()->first;
-    if ( nbInter == 1 )
-      return fabs( f ) < tolerance ? TopAbs_ON : TopAbs_UNKNOWN;
-
-    if ( fabs( f ) < tolerance || fabs( l ) < tolerance )
-      return TopAbs_ON;
-
-    if ( (f<0) == (l<0) )
-      return TopAbs_OUT;
-
-    int nbIntBeforePoint = std::distance( u2inters.begin(), u2inters.lower_bound(0));
-    int nbIntAfterPoint  = nbInter - nbIntBeforePoint;
-    if ( nbIntBeforePoint == 1 || nbIntAfterPoint == 1 )
-      return TopAbs_IN;
-
-    nbInt2Axis.insert( make_pair( min( nbIntBeforePoint, nbIntAfterPoint ), axis ));
-
-  } // three attempts - loop on CS axes
-
-  // Analyse intersections thoroughly
-  // We make two loops, on the first one we correctly exclude touching intersections,
-  // on the second, we additionally just throw away intersections with small angles
-
-  for ( int angleCheck = 0; angleCheck < 2; ++angleCheck )
-  {
-    multimap< int, int >::const_iterator nb_axis = nbInt2Axis.begin();
-    for ( ; nb_axis != nbInt2Axis.end(); ++nb_axis )
     {
-      int axis = nb_axis->second;
+      if ( !_ebbTree || _elementType != type )
-      map< double, TInters > & u2inters = paramOnLine2TInters[ axis ];
-
-      gp_Ax1 lineAxis( point, axisDir[axis]);
-      gp_Lin line    ( lineAxis );
-
-      // add tangent intersections to u2inters
-      double param;
-      list< TInters >::const_iterator tgtInt = tangentInters[ axis ].begin();
-      for ( ; tgtInt != tangentInters[ axis ].end(); ++tgtInt )
-        if ( getIntersParamOnLine( line, tgtInt->_face, tolerance, param ))
-          u2inters.insert(make_pair( param, *tgtInt ));
-      tangentInters[ axis ].clear();
-
-      // Count intersections before and after the point excluding touching ones.
-
-      int nbIntBeforePoint = 0, nbIntAfterPoint = 0;
-      double f = numeric_limits<double>::max(), l = -numeric_limits<double>::max();
-      map< double, TInters >::iterator u_int2 = u2inters.begin(), u_int1 = u_int2++;
-      bool ok = ! u_int1->second._coincides;
-      while ( ok && u_int1 != u2inters.end() )
       {
-        // skip intersections at the same point (if line pass through edge or node)
+        if ( _ebbTree ) delete _ebbTree;
-        int nbSamePnt = 0;
+        _ebbTree = new ElementBndBoxTree( *_mesh, _elementType = type );
-        double u = u_int1->first;
-        while ( u_int2 != u2inters.end() && fabs( u_int2->first - u ) < tolerance )
-        {
-          ++nbSamePnt;
-          ++u_int2;
-        }
-
-        // skip tangent intersections
-        int nbTgt = 0;
-        const SMDS_MeshElement* prevFace = u_int1->second._face;
-        while ( ok && u_int2->second._coincides )
-        {
-          if ( SMESH_Algo::GetCommonNodes(prevFace , u_int2->second._face).empty() )
-            ok = false;
-          else
-          {
-            nbTgt++;
-            u_int2++;
-            ok = ( u_int2 != u2inters.end() );
-          }
-        }
-        if ( !ok ) break;
-
-        // skip intersections at the same point after tangent intersections
-        if ( nbTgt > 0 )
-        {
-          double u = u_int2->first;
-          ++u_int2;
-          while ( u_int2 != u2inters.end() && fabs( u_int2->first - u ) < tolerance )
-          {
-            ++nbSamePnt;
-            ++u_int2;
-          }
-        }
-
-        bool touchingInt = false;
-        if ( nbSamePnt + nbTgt > 0 )
-        {
-          double minDot = numeric_limits<double>::max(), maxDot = -numeric_limits<double>::max();
-          map< double, TInters >::iterator u_int = u_int1;
-          for ( ; u_int != u_int2; ++u_int )
-          {
-            if ( u_int->second._coincides ) continue;
-            double dot = u_int->second._faceNorm * line.Direction();
-            if ( dot > maxDot ) maxDot = dot;
-            if ( dot < minDot ) minDot = dot;
-          }
-          touchingInt = ( minDot*maxDot < 0 );
-        }
-        // throw away intersection with lower angles
-        if ( !touchingInt && angleCheck )
-        {
-          const double angTol = 2 * Standard_PI180, normAng = Standard_PI / 2;
-          double angle = u_int1->second._faceNorm.Angle( line.Direction() );
-          touchingInt = ( fabs( angle - normAng ) < angTol );
-        }
-        if ( !touchingInt )
-        {
-          if ( u < 0 )
-            ++nbIntBeforePoint;
-          else
-            ++nbIntAfterPoint;
-
-          if ( u < f ) f = u;
-          if ( u > l ) l = u;
-        }
-
-        u_int1 = u_int2++; // to next intersection
-
-      } // loop on intersections with one line
-
-      if ( ok )
-      {
-        if ( nbIntBeforePoint == 0  || nbIntAfterPoint == 0)
-          return TopAbs_OUT; 
-
-        if ( nbIntBeforePoint + nbIntAfterPoint == 1 )
-          return fabs( f ) < tolerance ? TopAbs_ON : TopAbs_UNKNOWN;
-
-        if ( nbIntBeforePoint == 1 || nbIntAfterPoint == 1 )
-          return fabs( f ) < tolerance ? TopAbs_ON : TopAbs_UNKNOWN;
-
-        if ( fabs( f ) < tolerance || fabs( l ) < tolerance )
-          return TopAbs_ON;
-
-        if ( (f<0) == (l<0) )
-          return TopAbs_OUT;
       }
-    } // loop on intersections of the tree lines - thorough analysis
+      TIDSortedElemSet suspectElems;
-  } // two attempts - with and w/o angleCheck
+      _ebbTree->getElementsNearPoint( point, suspectElems );
-
+      TIDSortedElemSet::iterator elem = suspectElems.begin();
-  return TopAbs_UNKNOWN;
+      for ( ; elem != suspectElems.end(); ++elem )
-}
+        if ( !SMESH_MeshEditor::isOut( *elem, point, tolerance ))
+          foundElements.push_back( *elem );
+    }
+    return foundElements.size();
+  }
+}; // struct SMESH_ElementSearcherImpl
 
 //=======================================================================
 /*!
@@ -9837,3 +9351,5 @@ bool SMESH_MeshEditor::Make2DMeshFrom3D()
   }
   return res;
 }
+
+

src/SMESH/SMESH_MeshEditor.hxx

@@ -78,7 +78,6 @@ struct SMESH_NodeSearcher
 /*!
  * \brief Find elements of given type where the given point is IN or ON.
  *        Returns nb of found elements and elements them-selves.
- *        Another task is to find out if the given point is out of closed 2D mesh.
  *
  * 'ALL' type means elements of any type excluding nodes and 0D elements
  */
@@ -89,8 +88,6 @@ struct SMESH_ElementSearcher
   virtual int FindElementsByPoint(const gp_Pnt&                           point,
                                   SMDSAbs_ElementType                     type,
                                   std::vector< const SMDS_MeshElement* >& foundElems)=0;
-
-  virtual TopAbs_State GetPointState(const gp_Pnt& point) = 0;
 };
 
 //=======================================================================
@@ -127,7 +124,7 @@ public:
   struct TNodeXYZ : public gp_XYZ
   {
     const SMDS_MeshNode* _node;
-    TNodeXYZ( const SMDS_MeshElement* e):gp_XYZ(0,0,0),_node(0) {
+    TNodeXYZ( const SMDS_MeshElement* e):_node(0) {
       if (e) {
         ASSERT( e->GetType() == SMDSAbs_Node );
         _node = static_cast<const SMDS_MeshNode*>(e);
@@ -224,13 +221,6 @@ public:
                  SMESH::Controls::NumericalFunctorPtr theCriterion);
 
 
-  enum SplitVolumToTetraFlags { HEXA_TO_5 = 1, HEXA_TO_6 = 2 };//!<arg of SplitVolumesIntoTetra()
-  /*!
-   * \brief Split volumic elements into tetrahedra.
-   */
-  void SplitVolumesIntoTetra (const TIDSortedElemSet & theElems, const int theMethodFlags);
-
-
   enum SmoothMethod { LAPLACIAN = 0, CENTROIDAL };
 
   void Smooth (TIDSortedElemSet &               theElements,
@@ -734,3 +724,5 @@ private:
 };
 
 #endif
+
+