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23080: [CEA 1497] Do not merge a middle node in quadratic with the extreme nodes...
[modules/smesh.git] / src / SMESH_I / SMESH_MeshEditor_i.cxx
index 9e06d0d69378f288f5e722998bfdd9bbc4808eb3..157983e3c1dc40bdaaa467534ba0c0dc8ca83202 100644 (file)
@@ -1,4 +1,4 @@
-// Copyright (C) 2007-2013  CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2015  CEA/DEN, EDF R&D, OPEN CASCADE
 //
 // Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
@@ -6,7 +6,7 @@
 // This library is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Lesser General Public
 // License as published by the Free Software Foundation; either
-// version 2.1 of the License.
+// version 2.1 of the License, or (at your option) any later version.
 //
 // This library is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 //  Author : Nicolas REJNERI
 //  Module : SMESH
 
-#ifdef WNT
+#ifdef WIN32
 #define NOMINMAX
 #endif
 
+// A macro used in SMESH_TryCatch.hxx,
+// it re-raises a CORBA SALOME exception thrown by SMESH_MeshEditor_i and caught by SMESH_CATCH
+#define SMY_OWN_CATCH \
+  catch ( SALOME::SALOME_Exception & e ) { throw e; }
+
 #include "SMESH_MeshEditor_i.hxx"
 
 #include "SMDS_EdgePosition.hxx"
@@ -47,6 +52,7 @@
 #include "SMESH_Gen_i.hxx"
 #include "SMESH_Group.hxx"
 #include "SMESH_Group_i.hxx"
+#include "SMESH_MeshAlgos.hxx"
 #include "SMESH_MeshPartDS.hxx"
 #include "SMESH_MesherHelper.hxx"
 #include "SMESH_PythonDump.hxx"
@@ -57,6 +63,8 @@
 #include <Utils_ExceptHandlers.hxx>
 #include <Utils_CorbaException.hxx>
 #include <SALOMEDS_wrap.hxx>
+#include <SALOME_GenericObj_i.hh>
+#include <Basics_OCCTVersion.hxx>
 
 #include <BRepAdaptor_Surface.hxx>
 #include <BRep_Tool.hxx>
@@ -106,8 +114,6 @@ namespace MeshEditor_I {
       _myMeshDS  = new SMESHDS_Mesh( _id, true );
       myPreviewType = previewElements;
     }
-    //!< Destructor
-    virtual ~TPreviewMesh() { delete _myMeshDS; _myMeshDS = 0; }
     //!< Copy a set of elements
     void Copy(const TIDSortedElemSet & theElements,
               TIDSortedElemSet&        theCopyElements,
@@ -148,20 +154,11 @@ namespace MeshEditor_I {
       }
 
       // creates a corresponding element on copied nodes
-      SMDS_MeshElement* anElemCopy = 0;
-      if ( anElem->IsPoly() && anElem->GetType() == SMDSAbs_Volume )
-      {
-        const SMDS_VtkVolume* ph =
-          dynamic_cast<const SMDS_VtkVolume*> (anElem);
-        if ( ph )
-          anElemCopy = _myMeshDS->AddPolyhedralVolumeWithID
-            (anElemNodesID, ph->GetQuantities(),anElem->GetID());
-      }
-      else {
-        anElemCopy = ::SMESH_MeshEditor(this).AddElement( anElemNodesID,
-                                                          anElem->GetType(),
-                                                          anElem->IsPoly() );
-      }
+      ::SMESH_MeshEditor::ElemFeatures elemType;
+      elemType.Init( anElem, /*basicOnly=*/false );
+      elemType.SetID( anElem->GetID() );
+      SMDS_MeshElement* anElemCopy =
+        ::SMESH_MeshEditor(this).AddElement( anElemNodesID, elemType );
       return anElemCopy;
     }
     //!< Copy a node
@@ -170,6 +167,16 @@ namespace MeshEditor_I {
       return _myMeshDS->AddNodeWithID(anElemNode->X(), anElemNode->Y(), anElemNode->Z(),
                                       anElemNode->GetID());
     }
+    void RemoveAll()
+    {
+      GetMeshDS()->ClearMesh();
+    }
+    void Remove( SMDSAbs_ElementType type )
+    {
+      SMDS_ElemIteratorPtr eIt = GetMeshDS()->elementsIterator( type );
+      while ( eIt->more() )
+        GetMeshDS()->RemoveFreeElement( eIt->next(), /*sm=*/0, /*fromGroups=*/false );
+    }
   };// struct TPreviewMesh
 
   static SMESH_NodeSearcher *    theNodeSearcher    = 0;
@@ -216,22 +223,22 @@ namespace MeshEditor_I {
         }
         myMesh = mesh;
         myMeshPartIOR = meshPartIOR;
-        if ( SMESH_subMesh* myMainSubMesh = mesh->GetSubMeshContaining(1) ) {
-          const TDependsOnMap & subMeshes = myMainSubMesh->DependsOn();
-          TDependsOnMap::const_iterator sm;
-          for (sm = subMeshes.begin(); sm != subMeshes.end(); sm++)
-            sm->second->SetEventListener( this, 0, sm->second );
+        SMESH_subMesh* sm = mesh->GetSubMesh( mesh->GetShapeToMesh() );
+        SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator( /*includeSelf=*/true );
+        while ( smIt->more() )
+        {
+          sm = smIt->next();
+          sm->SetEventListener( this, 0, sm );
         }
       }
     }
     //!<  delete self from all submeshes
     void Unset(SMESH_Mesh* mesh)
     {
-      if ( SMESH_subMesh* myMainSubMesh = mesh->GetSubMeshContaining(1) ) {
-        const TDependsOnMap & subMeshes = myMainSubMesh->DependsOn();
-        TDependsOnMap::const_iterator sm;
-        for (sm = subMeshes.begin(); sm != subMeshes.end(); sm++)
-          sm->second->DeleteEventListener( this );
+      if ( SMESH_subMesh* sm = mesh->GetSubMeshContaining(1) ) {
+        SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator( /*includeSelf=*/true );
+        while ( smIt->more() )
+          smIt->next()->DeleteEventListener( this );
       }
       myMesh = 0;
     }
@@ -266,52 +273,31 @@ namespace MeshEditor_I {
   void arrayToSet(const SMESH::long_array & IDs,
                   const SMESHDS_Mesh*       aMesh,
                   TIDSortedElemSet&         aMap,
-                  const SMDSAbs_ElementType aType = SMDSAbs_All )
+                  const SMDSAbs_ElementType aType = SMDSAbs_All,
+                  SMDS_MeshElement::Filter* aFilter = NULL)
   {
-    for (int i=0; i<IDs.length(); i++) {
-      CORBA::Long ind = IDs[i];
-      const SMDS_MeshElement * elem =
-        (aType == SMDSAbs_Node ? aMesh->FindNode(ind) : aMesh->FindElement(ind));
-      if ( elem && ( aType == SMDSAbs_All || elem->GetType() == aType ))
-        aMap.insert( aMap.end(), elem );
-    }
-  }
-  //================================================================================
-  /*!
-   * \brief Retrieve elements of given type from SMESH_IDSource
-   */
-  //================================================================================
-
-  bool idSourceToSet(SMESH::SMESH_IDSource_ptr  theIDSource,
-                     const SMESHDS_Mesh*        theMeshDS,
-                     TIDSortedElemSet&          theElemSet,
-                     const SMDSAbs_ElementType  theType,
-                     const bool                 emptyIfIsMesh=false)
+    SMDS_MeshElement::NonNullFilter filter1;
+    SMDS_MeshElement::TypeFilter    filter2( aType );
 
-  {
-    if ( CORBA::is_nil( theIDSource ) )
-      return false;
-    if ( emptyIfIsMesh && SMESH::DownCast<SMESH_Mesh_i*>( theIDSource ))
-      return true;
+    if ( aFilter == NULL )
+      aFilter = ( aType == SMDSAbs_All ) ? (SMDS_MeshElement::Filter*) &filter1 : (SMDS_MeshElement::Filter*) &filter2;
+    
+    SMDS_MeshElement::Filter & filter = *aFilter;
 
-    SMESH::long_array_var anIDs = theIDSource->GetIDs();
-    if ( anIDs->length() == 0 )
-      return false;
-    SMESH::array_of_ElementType_var types = theIDSource->GetTypes();
-    if ( types->length() == 1 && types[0] == SMESH::NODE ) // group of nodes
-    {
-      if ( theType == SMDSAbs_All || theType == SMDSAbs_Node )
-        arrayToSet( anIDs, theMeshDS, theElemSet, SMDSAbs_Node );
-      else
-        return false;
-    }
+    if ( aType == SMDSAbs_Node )
+      for (int i=0; i<IDs.length(); i++) {
+        const SMDS_MeshElement * elem = aMesh->FindNode( IDs[i] );
+        if ( filter( elem ))
+          aMap.insert( aMap.end(), elem );
+      }
     else
-    {
-      arrayToSet( anIDs, theMeshDS, theElemSet, theType);
-      return bool(anIDs->length()) == bool(theElemSet.size());
-    }
-    return true;
+      for (int i=0; i<IDs.length(); i++) {
+        const SMDS_MeshElement * elem = aMesh->FindElement( IDs[i] );
+        if ( filter( elem ))
+          aMap.insert( aMap.end(), elem );
+      }
   }
+
   //================================================================================
   /*!
    * \brief Retrieve nodes from SMESH_IDSource
@@ -369,7 +355,8 @@ namespace MeshEditor_I {
     if ( !sameElemType )
       elemType = SMDSAbs_All;
 
-    TIDSortedElemSet visitedNodes;
+    vector<bool> isNodeChecked( theMeshDS->NbNodes(), false );
+
     TIDSortedElemSet::const_iterator elemIt = theElements.begin();
     for ( ; elemIt != theElements.end(); ++elemIt )
     {
@@ -378,8 +365,9 @@ namespace MeshEditor_I {
       while ( --i != -1 )
       {
         const SMDS_MeshNode* n = e->GetNode( i );
-        if ( visitedNodes.insert( n ).second )
+        if ( !isNodeChecked[ n->GetID() ])
         {
+          isNodeChecked[ n->GetID() ] = true;
           SMDS_ElemIteratorPtr invIt = n->GetInverseElementIterator(elemType);
           while ( invIt->more() )
           {
@@ -437,11 +425,26 @@ SMESH_MeshEditor_i::SMESH_MeshEditor_i(SMESH_Mesh_i* theMesh, bool isPreview):
 
 SMESH_MeshEditor_i::~SMESH_MeshEditor_i()
 {
-  deleteAuxIDSources();
+  PortableServer::POA_var poa = SMESH_Gen_i::GetPOA();
+  PortableServer::ObjectId_var anObjectId = poa->servant_to_id(this);
+  poa->deactivate_object(anObjectId.in());
+
+  //deleteAuxIDSources();
   delete myPreviewMesh;   myPreviewMesh = 0;
   delete myPreviewEditor; myPreviewEditor = 0;
 }
 
+//================================================================================
+/*!
+ * \brief Returns the mesh
+ */
+//================================================================================
+
+SMESH::SMESH_Mesh_ptr SMESH_MeshEditor_i::GetMesh()
+{
+  return myMesh_i->_this();
+}
+
 //================================================================================
 /*!
  * \brief Clear members
@@ -451,21 +454,21 @@ SMESH_MeshEditor_i::~SMESH_MeshEditor_i()
 void SMESH_MeshEditor_i::initData(bool deleteSearchers)
 {
   if ( myIsPreviewMode ) {
-    if ( myPreviewMesh ) myPreviewMesh->Clear();
+    if ( myPreviewMesh ) myPreviewMesh->RemoveAll();
   }
   else {
     if ( deleteSearchers )
       TSearchersDeleter::Delete();
   }
   getEditor().GetError().reset();
-  getEditor().CrearLastCreated();
+  getEditor().ClearLastCreated();
 }
 
 //================================================================================
 /*!
  * \brief Increment mesh modif time and optionally record that the performed
  *        modification may influence futher mesh re-compute.
- *  \param [in] isReComputeSafe - true if the modification does not infulence
+ *  \param [in] isReComputeSafe - true if the modification does not influence
  *              futher mesh re-compute
  */
 //================================================================================
@@ -523,7 +526,7 @@ TPreviewMesh * SMESH_MeshEditor_i::getPreviewMesh(SMDSAbs_ElementType previewEle
 
 SMESH::MeshPreviewStruct* SMESH_MeshEditor_i::GetPreviewData()
   throw (SALOME::SALOME_Exception)
-{ 
+{
   SMESH_TRY;
   const bool hasBadElems = ( getEditor().GetError() && getEditor().GetError()->HasBadElems() );
 
@@ -545,7 +548,7 @@ SMESH::MeshPreviewStruct* SMESH_MeshEditor_i::GetPreviewData()
     myPreviewData = new SMESH::MeshPreviewStruct();
     myPreviewData->nodesXYZ.length(aMeshDS->NbNodes());
 
-    
+
     SMDSAbs_ElementType previewType = SMDSAbs_All;
     if ( !hasBadElems )
       if (TPreviewMesh * aPreviewMesh = dynamic_cast< TPreviewMesh* >( getEditor().GetMesh() )) {
@@ -565,10 +568,12 @@ SMESH::MeshPreviewStruct* SMESH_MeshEditor_i::GetPreviewData()
 
     while ( itMeshElems->more() ) {
       const SMDS_MeshElement* aMeshElem = itMeshElems->next();
-      SMDS_ElemIteratorPtr itElemNodes = aMeshElem->nodesIterator();
+      SMDS_NodeIteratorPtr itElemNodes = 
+        (( aMeshElem->GetEntityType() == SMDSEntity_Quad_Polygon ) ?
+         aMeshElem->interlacedNodesIterator() :
+         aMeshElem->nodeIterator() );
       while ( itElemNodes->more() ) {
-        const SMDS_MeshNode* aMeshNode =
-          static_cast<const SMDS_MeshNode*>( itElemNodes->next() );
+        const SMDS_MeshNode* aMeshNode = itElemNodes->next();
         int aNodeID = aMeshNode->GetID();
         TNodesMap::iterator anIter = nodesMap.find(aNodeID);
         if ( anIter == nodesMap.end() ) {
@@ -585,12 +590,10 @@ SMESH::MeshPreviewStruct* SMESH_MeshEditor_i::GetPreviewData()
       // filling the elements types
       SMDSAbs_ElementType aType = aMeshElem->GetType();
       bool               isPoly = aMeshElem->IsPoly();
-
       myPreviewData->elementTypes[i].SMDS_ElementType = (SMESH::ElementType) aType;
-      myPreviewData->elementTypes[i].isPoly = isPoly;
+      myPreviewData->elementTypes[i].isPoly           = isPoly;
       myPreviewData->elementTypes[i].nbNodesInElement = aMeshElem->NbNodes();
       i++;
-
     }
     myPreviewData->nodesXYZ.length( j );
 
@@ -600,8 +603,8 @@ SMESH::MeshPreviewStruct* SMESH_MeshEditor_i::GetPreviewData()
     for( int i = 0; aConnIter != aNodesConnectivity.end(); aConnIter++, i++ )
       myPreviewData->elementConnectivities[i] = *aConnIter;
   }
-
   return myPreviewData._retn();
+
   SMESH_CATCH( SMESH::throwCorbaException );
   return 0;
 }
@@ -652,9 +655,22 @@ SMESH::long_array* SMESH_MeshEditor_i::GetLastCreatedElems()
   return 0;
 }
 
+//=======================================================================
+//function : ClearLastCreated
+//purpose  : Clears sequences of last created elements and nodes 
+//=======================================================================
+
+void SMESH_MeshEditor_i::ClearLastCreated() throw (SALOME::SALOME_Exception)
+{
+  SMESH_TRY;
+  getEditor().ClearLastCreated();
+  SMESH_CATCH( SMESH::throwCorbaException );
+}
+
 //=======================================================================
 /*
  * Returns description of an error/warning occured during the last operation
+ * WARNING: ComputeError.code >= 100 and no corresponding enum in IDL API
  */
 //=======================================================================
 
@@ -685,16 +701,26 @@ SMESH::ComputeError* SMESH_MeshEditor_i::GetLastError()
 
 //=======================================================================
 //function : MakeIDSource
-//purpose  : Wrap a sequence of ids in a SMESH_IDSource
+//purpose  : Wrap a sequence of ids in a SMESH_IDSource.
+//           Call UnRegister() as you fininsh using it!!
 //=======================================================================
 
-struct SMESH_MeshEditor_i::_IDSource : public POA_SMESH::SMESH_IDSource
+struct SMESH_MeshEditor_i::_IDSource : public virtual POA_SMESH::SMESH_IDSource,
+                                       public virtual SALOME::GenericObj_i
 {
   SMESH::long_array     _ids;
   SMESH::ElementType    _type;
   SMESH::SMESH_Mesh_ptr _mesh;
   SMESH::long_array* GetIDs()      { return new SMESH::long_array( _ids ); }
   SMESH::long_array* GetMeshInfo() { return 0; }
+  SMESH::long_array* GetNbElementsByType()
+  {
+    SMESH::long_array_var aRes = new SMESH::long_array();
+    aRes->length(SMESH::NB_ELEMENT_TYPES);
+    for (int i = 0; i < SMESH::NB_ELEMENT_TYPES; i++)
+      aRes[ i ] = ( i == _type ) ? _ids.length() : 0;
+    return aRes._retn();  
+  }
   SMESH::SMESH_Mesh_ptr GetMesh()  { return SMESH::SMESH_Mesh::_duplicate( _mesh ); }
   bool IsMeshInfoCorrect()         { return true; }
   SMESH::array_of_ElementType* GetTypes()
@@ -706,19 +732,22 @@ struct SMESH_MeshEditor_i::_IDSource : public POA_SMESH::SMESH_IDSource
     }
     return types._retn();
   }
+  SALOMEDS::TMPFile* GetVtkUgStream()
+  {
+    SALOMEDS::TMPFile_var SeqFile;
+    return SeqFile._retn();
+  }
 };
 
 SMESH::SMESH_IDSource_ptr SMESH_MeshEditor_i::MakeIDSource(const SMESH::long_array& ids,
                                                            SMESH::ElementType       type)
 {
-  if ( myAuxIDSources.size() > 10 )
-    deleteAuxIDSources();
-
   _IDSource* idSrc = new _IDSource;
   idSrc->_mesh = myMesh_i->_this();
   idSrc->_ids  = ids;
   idSrc->_type = type;
-  myAuxIDSources.push_back( idSrc );
+  if ( type == SMESH::ALL && ids.length() > 0 )
+    idSrc->_type = myMesh_i->GetElementType( ids[0], true );
 
   SMESH::SMESH_IDSource_var anIDSourceVar = idSrc->_this();
 
@@ -730,14 +759,26 @@ bool SMESH_MeshEditor_i::IsTemporaryIDSource( SMESH::SMESH_IDSource_ptr& idSourc
   return SMESH::DownCast<SMESH_MeshEditor_i::_IDSource*>( idSource );
 }
 
-void SMESH_MeshEditor_i::deleteAuxIDSources()
+CORBA::Long* SMESH_MeshEditor_i::GetTemporaryIDs( SMESH::SMESH_IDSource_ptr& idSource,
+                                                  int&                       nbIds)
 {
-  std::list< _IDSource* >::iterator idSrcIt = myAuxIDSources.begin();
-  for ( ; idSrcIt != myAuxIDSources.end(); ++idSrcIt )
-    delete *idSrcIt;
-  myAuxIDSources.clear();
+  if ( _IDSource* tmpIdSource = SMESH::DownCast<SMESH_MeshEditor_i::_IDSource*>( idSource ))
+  {
+    nbIds = (int) tmpIdSource->_ids.length();
+    return & tmpIdSource->_ids[0];
+  }
+  nbIds = 0;
+  return 0;
 }
 
+// void SMESH_MeshEditor_i::deleteAuxIDSources()
+// {
+//   std::list< _IDSource* >::iterator idSrcIt = myAuxIDSources.begin();
+//   for ( ; idSrcIt != myAuxIDSources.end(); ++idSrcIt )
+//     delete *idSrcIt;
+//   myAuxIDSources.clear();
+// }
+
 //=============================================================================
 /*!
  *
@@ -981,26 +1022,19 @@ CORBA::Long SMESH_MeshEditor_i::AddFace(const SMESH::long_array & IDsOfNodes)
     nodes[i] = getMeshDS()->FindNode(IDsOfNodes[i]);
 
   SMDS_MeshElement* elem = 0;
-  if (NbNodes == 3) {
-    elem = getMeshDS()->AddFace(nodes[0], nodes[1], nodes[2]);
-  }
-  else if (NbNodes == 4) {
-    elem = getMeshDS()->AddFace(nodes[0], nodes[1], nodes[2], nodes[3]);
-  }
-  else if (NbNodes == 6) {
-    elem = getMeshDS()->AddFace(nodes[0], nodes[1], nodes[2], nodes[3],
-                                nodes[4], nodes[5]);
-  }
-  else if (NbNodes == 8) {
-    elem = getMeshDS()->AddFace(nodes[0], nodes[1], nodes[2], nodes[3],
-                                nodes[4], nodes[5], nodes[6], nodes[7]);
-  }
-  else if (NbNodes == 9) {
-    elem = getMeshDS()->AddFace(nodes[0], nodes[1], nodes[2], nodes[3],
-                                nodes[4], nodes[5], nodes[6], nodes[7], nodes[8] );
-  }
-  else if (NbNodes > 2) {
-    elem = getMeshDS()->AddPolygonalFace(nodes);
+  switch (NbNodes) {
+  case 3: elem = getMeshDS()->AddFace(nodes[0], nodes[1], nodes[2]); break;
+  case 4: elem = getMeshDS()->AddFace(nodes[0], nodes[1], nodes[2], nodes[3]); break;
+  case 6: elem = getMeshDS()->AddFace(nodes[0], nodes[1], nodes[2], nodes[3],
+                                      nodes[4], nodes[5]); break;
+  case 7: elem = getMeshDS()->AddFace(nodes[0], nodes[1], nodes[2], nodes[3],
+                                      nodes[4], nodes[5], nodes[6]); break;
+  case 8: elem = getMeshDS()->AddFace(nodes[0], nodes[1], nodes[2], nodes[3],
+                                      nodes[4], nodes[5], nodes[6], nodes[7]); break;
+  case 9: elem = getMeshDS()->AddFace(nodes[0], nodes[1], nodes[2], nodes[3],
+                                      nodes[4], nodes[5], nodes[6], nodes[7],
+                                      nodes[8] ); break;
+  default: elem = getMeshDS()->AddPolygonalFace(nodes);
   }
 
   // Update Python script
@@ -1019,6 +1053,7 @@ CORBA::Long SMESH_MeshEditor_i::AddFace(const SMESH::long_array & IDsOfNodes)
  *  AddPolygonalFace
  */
 //=============================================================================
+
 CORBA::Long SMESH_MeshEditor_i::AddPolygonalFace (const SMESH::long_array & IDsOfNodes)
   throw (SALOME::SALOME_Exception)
 {
@@ -1042,6 +1077,35 @@ CORBA::Long SMESH_MeshEditor_i::AddPolygonalFace (const SMESH::long_array & IDsO
   return 0;
 }
 
+//=============================================================================
+/*!
+ *  AddQuadPolygonalFace
+ */
+//=============================================================================
+
+CORBA::Long SMESH_MeshEditor_i::AddQuadPolygonalFace (const SMESH::long_array & IDsOfNodes)
+  throw (SALOME::SALOME_Exception)
+{
+  SMESH_TRY;
+  initData();
+
+  int NbNodes = IDsOfNodes.length();
+  std::vector<const SMDS_MeshNode*> nodes (NbNodes);
+  for (int i = 0; i < NbNodes; i++)
+    nodes[i] = getMeshDS()->FindNode(IDsOfNodes[i]);
+
+  const SMDS_MeshElement* elem = getMeshDS()->AddQuadPolygonalFace(nodes);
+
+  // Update Python script
+  TPythonDump() <<"faceID = "<<this<<".AddPolygonalFace( "<<IDsOfNodes<<" )";
+
+  declareMeshModified( /*isReComputeSafe=*/false );
+  return elem ? elem->GetID() : 0;
+
+  SMESH_CATCH( SMESH::throwCorbaException );
+  return 0;
+}
+
 //=============================================================================
 /*!
  * Create volume, either linear and quadratic (this is determed
@@ -1413,7 +1477,6 @@ void SMESH_MeshEditor_i::SetNodeInVolume(CORBA::Long NodeID, CORBA::Long SolidID
  * \brief Bind an element to a shape
  * \param ElementID - element ID
  * \param ShapeID - shape ID available through GEOM_Object.GetSubShapeIndices()[0]
- * \retval boolean - false if ElementID or ShapeID is invalid
  */
 //=============================================================================
 
@@ -1427,7 +1490,7 @@ void SMESH_MeshEditor_i::SetMeshElementOnShape(CORBA::Long ElementID,
   if ( !elem )
     THROW_SALOME_CORBA_EXCEPTION("Invalid ElementID", SALOME::BAD_PARAM);
 
-  if ( mesh->MaxShapeIndex() < ShapeID )
+  if ( mesh->MaxShapeIndex() < ShapeID || ShapeID < 1 )
     THROW_SALOME_CORBA_EXCEPTION("Invalid ShapeID", SALOME::BAD_PARAM);
 
   TopoDS_Shape shape = mesh->IndexToShape( ShapeID );
@@ -1551,6 +1614,8 @@ CORBA::Boolean SMESH_MeshEditor_i::ReorientObject(SMESH::SMESH_IDSource_ptr theO
 
   TPythonDump aTPythonDump; // suppress dump in Reorient()
 
+  prepareIdSource( theObject );
+
   SMESH::long_array_var anElementsId = theObject->GetIDs();
   CORBA::Boolean isDone = Reorient(anElementsId);
 
@@ -1585,7 +1650,11 @@ CORBA::Long SMESH_MeshEditor_i::Reorient2D(SMESH::SMESH_IDSource_ptr the2Dgroup,
   initData(/*deleteSearchers=*/false);
 
   TIDSortedElemSet elements;
-  if ( !idSourceToSet( the2Dgroup, getMeshDS(), elements, SMDSAbs_Face, /*emptyIfIsMesh=*/1))
+  IDSource_Error error;
+  idSourceToSet( the2Dgroup, getMeshDS(), elements, SMDSAbs_Face, /*emptyIfIsMesh=*/1, &error );
+  if ( error == IDSource_EMPTY )
+    return 0;
+  if ( error == IDSource_INVALID )
     THROW_SALOME_CORBA_EXCEPTION("No faces in given group", SALOME::BAD_PARAM);
 
 
@@ -1609,14 +1678,14 @@ CORBA::Long SMESH_MeshEditor_i::Reorient2D(SMESH::SMESH_IDSource_ptr the2Dgroup,
         if ( myMesh->NbFaces() == 0 )
           THROW_SALOME_CORBA_EXCEPTION("No faces in the mesh", SALOME::BAD_PARAM);
 
-        theElementSearcher = myEditor.GetElementSearcher();
+        theElementSearcher = SMESH_MeshAlgos::GetElementSearcher( *getMeshDS() );
       }
       else
       {
         typedef SMDS_SetIterator<const SMDS_MeshElement*, TIDSortedElemSet::const_iterator > TIter;
         SMDS_ElemIteratorPtr elemsIt( new TIter( elements.begin(), elements.end() ));
 
-        theElementSearcher = myEditor.GetElementSearcher(elemsIt);
+        theElementSearcher = SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(), elemsIt);
       }
     }
     // find a face
@@ -1651,9 +1720,59 @@ CORBA::Long SMESH_MeshEditor_i::Reorient2D(SMESH::SMESH_IDSource_ptr the2Dgroup,
   return 0;
 }
 
+//=======================================================================
+//function : Reorient2DBy3D
+//purpose  : Reorient faces basing on orientation of adjacent volumes.
+//=======================================================================
+
+CORBA::Long SMESH_MeshEditor_i::Reorient2DBy3D(const SMESH::ListOfIDSources& faceGroups,
+                                               SMESH::SMESH_IDSource_ptr     volumeGroup,
+                                               CORBA::Boolean                outsideNormal)
+  throw (SALOME::SALOME_Exception)
+{
+  SMESH_TRY;
+  initData();
+
+  TIDSortedElemSet volumes;
+  IDSource_Error volsError;
+  idSourceToSet( volumeGroup, getMeshDS(), volumes, SMDSAbs_Volume, /*emptyIfMesh=*/1, &volsError);
+
+  int nbReori = 0;
+  for ( size_t i = 0; i < faceGroups.length(); ++i )
+  {
+    SMESH::SMESH_IDSource_ptr faceGrp = faceGroups[i].in();
+
+    TIDSortedElemSet faces;
+    IDSource_Error error;
+    idSourceToSet( faceGrp, getMeshDS(), faces, SMDSAbs_Face, /*emptyIfIsMesh=*/1, &error );
+    if ( error == IDSource_INVALID && faceGroups.length() == 1 )
+      THROW_SALOME_CORBA_EXCEPTION("No faces in a given object", SALOME::BAD_PARAM);
+    if ( error == IDSource_OK && volsError != IDSource_OK )
+      THROW_SALOME_CORBA_EXCEPTION("No volumes in a given object", SALOME::BAD_PARAM);
+
+    nbReori += getEditor().Reorient2DBy3D( faces, volumes, outsideNormal );
+
+    if ( error != IDSource_EMPTY && faces.empty() ) // all faces in the mesh treated
+      break;
+  }
+
+  if ( nbReori ) {
+    declareMeshModified( /*isReComputeSafe=*/false );
+  }
+  TPythonDump() << this << ".Reorient2DBy3D( "
+                << faceGroups << ", "
+                << volumeGroup << ", "
+                << outsideNormal << " )";
+
+  return nbReori;
+
+  SMESH_CATCH( SMESH::throwCorbaException );
+  return 0;
+}
+
 //=============================================================================
 /*!
- *
+ * \brief Fuse neighbour triangles into quadrangles.
  */
 //=============================================================================
 
@@ -1666,8 +1785,16 @@ CORBA::Boolean SMESH_MeshEditor_i::TriToQuad (const SMESH::long_array &   IDsOfE
   initData();
 
   SMESHDS_Mesh* aMesh = getMeshDS();
-  TIDSortedElemSet faces;
-  arrayToSet(IDsOfElements, aMesh, faces, SMDSAbs_Face);
+  TIDSortedElemSet faces,copyFaces;
+  SMDS_MeshElement::GeomFilter triaFilter(SMDSGeom_TRIANGLE);
+  arrayToSet(IDsOfElements, aMesh, faces, SMDSAbs_Face, & triaFilter);
+  TIDSortedElemSet* workElements = & faces;
+
+  if ( myIsPreviewMode ) {
+    SMDSAbs_ElementType select =  SMDSAbs_Face;
+    getPreviewMesh( SMDSAbs_Face )->Copy( faces, copyFaces, select );
+    workElements = & copyFaces;
+  }
 
   SMESH::NumericalFunctor_i* aNumericalFunctor =
     dynamic_cast<SMESH::NumericalFunctor_i*>( SMESH_Gen_i::GetServant( Criterion ).in() );
@@ -1677,12 +1804,13 @@ CORBA::Boolean SMESH_MeshEditor_i::TriToQuad (const SMESH::long_array &   IDsOfE
   else
     aCrit = aNumericalFunctor->GetNumericalFunctor();
 
-  // Update Python script
-  TPythonDump() << "isDone = " << this << ".TriToQuad( "
-                << IDsOfElements << ", " << aNumericalFunctor << ", " << TVar( MaxAngle ) << " )";
-
+  if ( !myIsPreviewMode ) {
+    // Update Python script
+    TPythonDump() << "isDone = " << this << ".TriToQuad( "
+                  << IDsOfElements << ", " << aNumericalFunctor << ", " << TVar( MaxAngle ) << " )";
+  }
 
-  bool stat = getEditor().TriToQuad( faces, aCrit, MaxAngle );
+  bool stat = getEditor().TriToQuad( *workElements, aCrit, MaxAngle );
 
   declareMeshModified( /*isReComputeSafe=*/!stat );
   return stat;
@@ -1693,7 +1821,7 @@ CORBA::Boolean SMESH_MeshEditor_i::TriToQuad (const SMESH::long_array &   IDsOfE
 
 //=============================================================================
 /*!
- *
+ * \brief Fuse neighbour triangles into quadrangles.
  */
 //=============================================================================
 
@@ -1706,15 +1834,19 @@ CORBA::Boolean SMESH_MeshEditor_i::TriToQuadObject (SMESH::SMESH_IDSource_ptr
   initData();
 
   TPythonDump aTPythonDump;  // suppress dump in TriToQuad()
+
+  prepareIdSource( theObject );
   SMESH::long_array_var anElementsId = theObject->GetIDs();
   CORBA::Boolean isDone = TriToQuad(anElementsId, Criterion, MaxAngle);
 
-  SMESH::NumericalFunctor_i* aNumericalFunctor =
-    SMESH::DownCast<SMESH::NumericalFunctor_i*>( Criterion );
+  if ( !myIsPreviewMode ) {
+    SMESH::NumericalFunctor_i* aNumericalFunctor =
+      SMESH::DownCast<SMESH::NumericalFunctor_i*>( Criterion );
 
-  // Update Python script
-  aTPythonDump << "isDone = " << this << ".TriToQuadObject("
-               << theObject << ", " << aNumericalFunctor << ", " << TVar( MaxAngle ) << " )";
+    // Update Python script
+    aTPythonDump << "isDone = " << this << ".TriToQuadObject("
+                 << theObject << ", " << aNumericalFunctor << ", " << TVar( MaxAngle ) << " )";
+  }
 
   return isDone;
 
@@ -1724,7 +1856,7 @@ CORBA::Boolean SMESH_MeshEditor_i::TriToQuadObject (SMESH::SMESH_IDSource_ptr
 
 //=============================================================================
 /*!
- *
+ * \brief Split quadrangles into triangles.
  */
 //=============================================================================
 
@@ -1760,12 +1892,12 @@ CORBA::Boolean SMESH_MeshEditor_i::QuadToTri (const SMESH::long_array &   IDsOfE
   return 0;
 }
 
-
 //=============================================================================
 /*!
- *
+ * \brief Split quadrangles into triangles.
  */
 //=============================================================================
+
 CORBA::Boolean SMESH_MeshEditor_i::QuadToTriObject (SMESH::SMESH_IDSource_ptr   theObject,
                                                     SMESH::NumericalFunctor_ptr Criterion)
   throw (SALOME::SALOME_Exception)
@@ -1775,6 +1907,7 @@ CORBA::Boolean SMESH_MeshEditor_i::QuadToTriObject (SMESH::SMESH_IDSource_ptr
 
   TPythonDump aTPythonDump;  // suppress dump in QuadToTri()
 
+  prepareIdSource( theObject );
   SMESH::long_array_var anElementsId = theObject->GetIDs();
   CORBA::Boolean isDone = QuadToTri(anElementsId, Criterion);
 
@@ -1791,12 +1924,36 @@ CORBA::Boolean SMESH_MeshEditor_i::QuadToTriObject (SMESH::SMESH_IDSource_ptr
   return 0;
 }
 
+//================================================================================
+/*!
+ * \brief Split each of quadrangles into 4 triangles.
+ *  \param [in] theObject - theQuads Container of quadrangles to split.
+ */
+//================================================================================
+
+void SMESH_MeshEditor_i::QuadTo4Tri (SMESH::SMESH_IDSource_ptr theObject)
+  throw (SALOME::SALOME_Exception)
+{
+  SMESH_TRY;
+  initData();
+
+  TIDSortedElemSet faces;
+  if ( !idSourceToSet( theObject, getMeshDS(), faces, SMDSAbs_Face, /*emptyIfIsMesh=*/true ) &&
+       faces.empty() )
+    THROW_SALOME_CORBA_EXCEPTION("No faces given", SALOME::BAD_PARAM);
+
+  getEditor().QuadTo4Tri( faces );
+  TPythonDump() << this << ".QuadTo4Tri( " << theObject << " )";
+
+  SMESH_CATCH( SMESH::throwCorbaException );
+}
 
 //=============================================================================
 /*!
- *
+ * \brief Split quadrangles into triangles.
  */
 //=============================================================================
+
 CORBA::Boolean SMESH_MeshEditor_i::SplitQuad (const SMESH::long_array & IDsOfElements,
                                               CORBA::Boolean            Diag13)
   throw (SALOME::SALOME_Exception)
@@ -1821,12 +1978,12 @@ CORBA::Boolean SMESH_MeshEditor_i::SplitQuad (const SMESH::long_array & IDsOfEle
   return 0;
 }
 
-
 //=============================================================================
 /*!
- *
+ * \brief Split quadrangles into triangles.
  */
 //=============================================================================
+
 CORBA::Boolean SMESH_MeshEditor_i::SplitQuadObject (SMESH::SMESH_IDSource_ptr theObject,
                                                     CORBA::Boolean            Diag13)
   throw (SALOME::SALOME_Exception)
@@ -1836,6 +1993,7 @@ CORBA::Boolean SMESH_MeshEditor_i::SplitQuadObject (SMESH::SMESH_IDSource_ptr th
 
   TPythonDump aTPythonDump;  // suppress dump in SplitQuad()
 
+  prepareIdSource( theObject );
   SMESH::long_array_var anElementsId = theObject->GetIDs();
   CORBA::Boolean isDone = SplitQuad(anElementsId, Diag13);
 
@@ -1853,7 +2011,11 @@ CORBA::Boolean SMESH_MeshEditor_i::SplitQuadObject (SMESH::SMESH_IDSource_ptr th
 
 //=============================================================================
 /*!
- *  BestSplit
+ * Find better splitting of the given quadrangle.
+ *  \param IDOfQuad  ID of the quadrangle to be splitted.
+ *  \param Criterion A criterion to choose a diagonal for splitting.
+ *  \return 1 if 1-3 diagonal is better, 2 if 2-4
+ *          diagonal is better, 0 if error occurs.
  */
 //=============================================================================
 
@@ -1877,6 +2039,7 @@ CORBA::Long SMESH_MeshEditor_i::BestSplit (CORBA::Long                 IDOfQuad,
 
     int id = getEditor().BestSplit(quad, aCrit);
     declareMeshModified( /*isReComputeSafe=*/ id < 1 );
+    return id;
   }
 
   SMESH_CATCH( SMESH::throwCorbaException );
@@ -1896,11 +2059,13 @@ void SMESH_MeshEditor_i::SplitVolumesIntoTetra (SMESH::SMESH_IDSource_ptr elems,
   SMESH_TRY;
   initData();
 
-  SMESH::long_array_var anElementsId = elems->GetIDs();
-  TIDSortedElemSet elemSet;
-  arrayToSet( anElementsId, getMeshDS(), elemSet, SMDSAbs_Volume );
+  ::SMESH_MeshEditor::TFacetOfElem elemSet;
+  const int noneFacet = -1;
+  SMDS_ElemIteratorPtr volIt = myMesh_i->GetElements( elems, SMESH::VOLUME );
+  while( volIt->more() )
+    elemSet.insert( elemSet.end(), make_pair( volIt->next(), noneFacet ));
 
-  getEditor().SplitVolumesIntoTetra( elemSet, int( methodFlags ));
+  getEditor().SplitVolumes( elemSet, int( methodFlags ));
   declareMeshModified( /*isReComputeSafe=*/true ); // it does not influence Compute()
 
   TPythonDump() << this << ".SplitVolumesIntoTetra( "
@@ -1909,6 +2074,70 @@ void SMESH_MeshEditor_i::SplitVolumesIntoTetra (SMESH::SMESH_IDSource_ptr elems,
   SMESH_CATCH( SMESH::throwCorbaException );
 }
 
+//================================================================================
+/*!
+ * \brief Split hexahedra into triangular prisms
+ *  \param elems - elements to split
+ *  \param facetToSplitNormal - normal used to find a facet of hexahedron
+ *         to split into triangles
+ *  \param methodFlags - flags passing splitting method:
+ *         1 - split the hexahedron into 2 prisms
+ *         2 - split the hexahedron into 4 prisms
+ */
+//================================================================================
+
+void SMESH_MeshEditor_i::SplitHexahedraIntoPrisms (SMESH::SMESH_IDSource_ptr  elems,
+                                                   const SMESH::PointStruct & startHexPoint,
+                                                   const SMESH::DirStruct&    facetToSplitNormal,
+                                                   CORBA::Short               methodFlags,
+                                                   CORBA::Boolean             allDomains)
+  throw (SALOME::SALOME_Exception)
+{
+  SMESH_TRY;
+  initData();
+  prepareIdSource( elems );
+
+  gp_Ax1 facetNorm( gp_Pnt( startHexPoint.x,
+                            startHexPoint.y,
+                            startHexPoint.z ),
+                    gp_Dir( facetToSplitNormal.PS.x,
+                            facetToSplitNormal.PS.y,
+                            facetToSplitNormal.PS.z ));
+  TIDSortedElemSet elemSet;
+  SMESH::long_array_var anElementsId = elems->GetIDs();
+  SMDS_MeshElement::GeomFilter filter( SMDSGeom_HEXA );
+  arrayToSet( anElementsId, getMeshDS(), elemSet, SMDSAbs_Volume, &filter );
+
+  ::SMESH_MeshEditor::TFacetOfElem elemFacets;
+  while ( !elemSet.empty() )
+  {
+    getEditor().GetHexaFacetsToSplit( elemSet, facetNorm, elemFacets );
+    if ( !allDomains )
+      break;
+
+    ::SMESH_MeshEditor::TFacetOfElem::iterator ef = elemFacets.begin();
+    for ( ; ef != elemFacets.end(); ++ef )
+      elemSet.erase( ef->first );
+  }
+
+  if ( methodFlags == 2 )
+    methodFlags = int( ::SMESH_MeshEditor::HEXA_TO_4_PRISMS );
+  else
+    methodFlags = int( ::SMESH_MeshEditor::HEXA_TO_2_PRISMS );
+
+  getEditor().SplitVolumes( elemFacets, int( methodFlags ));
+  declareMeshModified( /*isReComputeSafe=*/true ); // it does not influence Compute()
+
+  TPythonDump() << this << ".SplitHexahedraIntoPrisms( "
+                << elems << ", "
+                << startHexPoint << ", "
+                << facetToSplitNormal<< ", "
+                << methodFlags<< ", "
+                << allDomains << " )";
+
+  SMESH_CATCH( SMESH::throwCorbaException );
+}
+
 //=======================================================================
 //function : Smooth
 //purpose  :
@@ -2035,7 +2264,6 @@ SMESH_MeshEditor_i::smooth(const SMESH::long_array &              IDsOfElements,
   return 0;
 }
 
-
 //=============================================================================
 /*!
  *
@@ -2056,6 +2284,7 @@ SMESH_MeshEditor_i::smoothObject(SMESH::SMESH_IDSource_ptr              theObjec
 
   TPythonDump aTPythonDump;  // suppress dump in smooth()
 
+  prepareIdSource( theObject );
   SMESH::long_array_var anElementsId = theObject->GetIDs();
   CORBA::Boolean isDone = smooth (anElementsId, IDsOfFixedNodes, MaxNbOfIterations,
                                   MaxAspectRatio, Method, IsParametric);
@@ -2075,7 +2304,6 @@ SMESH_MeshEditor_i::smoothObject(SMESH::SMESH_IDSource_ptr              theObjec
   return 0;
 }
 
-
 //=============================================================================
 /*!
  *
@@ -2132,1427 +2360,543 @@ SMESH::ListOfGroups* SMESH_MeshEditor_i::getGroups(const std::list<int>* groupID
 }
 
 //=======================================================================
-//function : rotationSweep
+//function : RotationSweepObjects
 //purpose  :
 //=======================================================================
 
 SMESH::ListOfGroups*
-SMESH_MeshEditor_i::rotationSweep(const SMESH::long_array & theIDsOfElements,
-                                  const SMESH::AxisStruct & theAxis,
-                                  CORBA::Double             theAngleInRadians,
-                                  CORBA::Long               theNbOfSteps,
-                                  CORBA::Double             theTolerance,
-                                  const bool                theMakeGroups,
-                                  const SMDSAbs_ElementType theElementType)
+SMESH_MeshEditor_i::RotationSweepObjects(const SMESH::ListOfIDSources & theNodes,
+                                         const SMESH::ListOfIDSources & theEdges,
+                                         const SMESH::ListOfIDSources & theFaces,
+                                         const SMESH::AxisStruct &      theAxis,
+                                         CORBA::Double                  theAngleInRadians,
+                                         CORBA::Long                    theNbOfSteps,
+                                         CORBA::Double                  theTolerance,
+                                         const bool                     theMakeGroups)
   throw (SALOME::SALOME_Exception)
 {
   SMESH_TRY;
   initData();
 
-  TIDSortedElemSet inElements, copyElements;
-  arrayToSet(theIDsOfElements, getMeshDS(), inElements, theElementType);
+  TIDSortedElemSet elemsNodes[2];
+  for ( int i = 0, nb = theNodes.length(); i < nb; ++i ) {
+    SMDS_ElemIteratorPtr nIt = myMesh_i->GetElements( theNodes[i], SMESH::NODE );
+    while ( nIt->more() ) elemsNodes[1].insert( nIt->next() );
+  }
+  for ( int i = 0, nb = theEdges.length(); i < nb; ++i )
+    idSourceToSet( theEdges[i], getMeshDS(), elemsNodes[0], SMDSAbs_Edge );
+  for ( int i = 0, nb = theFaces.length(); i < nb; ++i )
+    idSourceToSet( theFaces[i], getMeshDS(), elemsNodes[0], SMDSAbs_Face );
 
-  TIDSortedElemSet* workElements = & inElements;
+  TIDSortedElemSet* workElements = & elemsNodes[0], copyElements[2];
   bool              makeWalls=true;
   if ( myIsPreviewMode )
   {
     SMDSAbs_ElementType select = SMDSAbs_All, avoid = SMDSAbs_Volume;
-    getPreviewMesh( SMDSAbs_Face )->Copy( inElements, copyElements, select, avoid );
-    workElements = & copyElements;
-    //makeWalls = false;
+    TPreviewMesh * tmpMesh = getPreviewMesh();
+    tmpMesh->Copy( elemsNodes[0], copyElements[0], select, avoid );
+    tmpMesh->Copy( elemsNodes[1], copyElements[1], select, avoid );
+    workElements = & copyElements[0];
+    //makeWalls = false; -- faces are needed for preview
   }
 
+  TPythonDump aPythonDump; // it is here to prevent dump of getGroups()
+
   gp_Ax1 Ax1 (gp_Pnt( theAxis.x,  theAxis.y,  theAxis.z ),
               gp_Vec( theAxis.vx, theAxis.vy, theAxis.vz ));
 
   ::SMESH_MeshEditor::PGroupIDs groupIds =
-      getEditor().RotationSweep (*workElements, Ax1, theAngleInRadians,
+      getEditor().RotationSweep (workElements, Ax1, theAngleInRadians,
                                  theNbOfSteps, theTolerance, theMakeGroups, makeWalls);
 
+  SMESH::ListOfGroups * aGroups = theMakeGroups ? getGroups( groupIds.get()) : 0;
+
   declareMeshModified( /*isReComputeSafe=*/true ); // does not influence Compute()
 
-  return theMakeGroups ? getGroups(groupIds.get()) : 0;
+  if ( !myIsPreviewMode )
+  {
+    dumpGroupsList( aPythonDump, aGroups );
+    aPythonDump << this<< ".RotationSweepObjects( "
+                << theNodes                  << ", "
+                << theEdges                  << ", "
+                << theFaces                  << ", "
+                << theAxis                   << ", "
+                << TVar( theAngleInRadians ) << ", "
+                << TVar( theNbOfSteps      ) << ", "
+                << TVar( theTolerance      ) << ", "
+                << theMakeGroups             << " )";
+  }
+  else
+  {
+    getPreviewMesh()->Remove( SMDSAbs_Volume );
+  }
+
+  return aGroups ? aGroups : new SMESH::ListOfGroups;
 
   SMESH_CATCH( SMESH::throwCorbaException );
   return 0;
 }
 
-//=======================================================================
-//function : RotationSweep
-//purpose  :
-//=======================================================================
-
-void SMESH_MeshEditor_i::RotationSweep(const SMESH::long_array & theIDsOfElements,
-                                       const SMESH::AxisStruct & theAxis,
-                                       CORBA::Double             theAngleInRadians,
-                                       CORBA::Long               theNbOfSteps,
-                                       CORBA::Double             theTolerance)
-  throw (SALOME::SALOME_Exception)
+namespace MeshEditor_I
 {
-  if ( !myIsPreviewMode ) {
-    TPythonDump() << this << ".RotationSweep( "
-                  << theIDsOfElements          << ", "
-                  << theAxis                   << ", "
-                  << TVar( theAngleInRadians ) << ", "
-                  << TVar( theNbOfSteps      ) << ", "
-                  << TVar( theTolerance      ) << " )";
-  }
-  rotationSweep(theIDsOfElements,
-                theAxis,
-                theAngleInRadians,
-                theNbOfSteps,
-                theTolerance,
-                false);
+  /*!
+   * \brief Structure used to pass extrusion parameters to ::SMESH_MeshEditor
+   */
+  struct ExtrusionParams : public ::SMESH_MeshEditor::ExtrusParam
+  {
+    bool myIsExtrusionByNormal;
+
+    static int makeFlags( CORBA::Boolean MakeGroups,
+                          CORBA::Boolean ByAverageNormal = false,
+                          CORBA::Boolean UseInputElemsOnly = false,
+                          CORBA::Long    Flags = 0,
+                          CORBA::Boolean MakeBoundary = true )
+    {
+      if ( MakeGroups       ) Flags |= ::SMESH_MeshEditor::EXTRUSION_FLAG_GROUPS;
+      if ( ByAverageNormal  ) Flags |= ::SMESH_MeshEditor::EXTRUSION_FLAG_BY_AVG_NORMAL;
+      if ( UseInputElemsOnly) Flags |= ::SMESH_MeshEditor::EXTRUSION_FLAG_USE_INPUT_ELEMS_ONLY;
+      if ( MakeBoundary     ) Flags |= ::SMESH_MeshEditor::EXTRUSION_FLAG_BOUNDARY;
+      return Flags;
+    }
+    // standard params
+    ExtrusionParams(const SMESH::DirStruct &  theDir,
+                    CORBA::Long               theNbOfSteps,
+                    CORBA::Boolean            theMakeGroups):
+      ::SMESH_MeshEditor::ExtrusParam ( gp_Vec( theDir.PS.x,
+                                                theDir.PS.y,
+                                                theDir.PS.z ),
+                                        theNbOfSteps,
+                                        makeFlags( theMakeGroups )),
+      myIsExtrusionByNormal( false )
+    {
+    }
+    // advanced params
+    ExtrusionParams(const SMESH::DirStruct &  theDir,
+                    CORBA::Long               theNbOfSteps,
+                    CORBA::Boolean            theMakeGroups,
+                    CORBA::Long               theExtrFlags,
+                    CORBA::Double             theSewTolerance):
+      ::SMESH_MeshEditor::ExtrusParam ( gp_Vec( theDir.PS.x,
+                                                theDir.PS.y,
+                                                theDir.PS.z ),
+                                        theNbOfSteps,
+                                        makeFlags( theMakeGroups, false, false,
+                                                   theExtrFlags, false ),
+                                        theSewTolerance ),
+      myIsExtrusionByNormal( false )
+    {
+    }
+    // params for extrusion by normal
+    ExtrusionParams(CORBA::Double  theStepSize,
+                    CORBA::Long    theNbOfSteps,
+                    CORBA::Short   theDim,
+                    CORBA::Boolean theByAverageNormal,
+                    CORBA::Boolean theUseInputElemsOnly,
+                    CORBA::Boolean theMakeGroups ):
+      ::SMESH_MeshEditor::ExtrusParam ( theStepSize, 
+                                        theNbOfSteps,
+                                        makeFlags( theMakeGroups,
+                                                   theByAverageNormal, theUseInputElemsOnly ),
+                                        theDim),
+      myIsExtrusionByNormal( true )
+    {
+    }
+
+    void SetNoGroups()
+    {
+      Flags() &= ~(::SMESH_MeshEditor::EXTRUSION_FLAG_GROUPS);
+    }
+  };
 }
 
 //=======================================================================
-//function : RotationSweepMakeGroups
-//purpose  :
+/*!
+ * \brief Generate dim+1 elements by extrusion of elements along vector
+ *  \param [in] edges - edges to extrude: a list including groups, sub-meshes or a mesh
+ *  \param [in] faces - faces to extrude: a list including groups, sub-meshes or a mesh
+ *  \param [in] nodes - nodes to extrude: a list including groups, sub-meshes or a mesh
+ *  \param [in] stepVector - vector giving direction and distance of an extrusion step
+ *  \param [in] nbOfSteps - number of elements to generate from one element
+ *  \param [in] toMakeGroups - if true, new elements will be included into new groups
+ *              corresponding to groups the input elements included in.
+ *  \return ListOfGroups - new groups craeted if \a toMakeGroups is true
+ */
 //=======================================================================
 
 SMESH::ListOfGroups*
-SMESH_MeshEditor_i::RotationSweepMakeGroups(const SMESH::long_array& theIDsOfElements,
-                                            const SMESH::AxisStruct& theAxis,
-                                            CORBA::Double            theAngleInRadians,
-                                            CORBA::Long              theNbOfSteps,
-                                            CORBA::Double            theTolerance)
+SMESH_MeshEditor_i::ExtrusionSweepObjects(const SMESH::ListOfIDSources & theNodes,
+                                          const SMESH::ListOfIDSources & theEdges,
+                                          const SMESH::ListOfIDSources & theFaces,
+                                          const SMESH::DirStruct &       theStepVector,
+                                          CORBA::Long                    theNbOfSteps,
+                                          CORBA::Boolean                 theToMakeGroups)
   throw (SALOME::SALOME_Exception)
 {
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
+  SMESH_TRY;
+  initData();
 
-  SMESH::ListOfGroups *aGroups = rotationSweep(theIDsOfElements,
-                                               theAxis,
-                                               theAngleInRadians,
-                                               theNbOfSteps,
-                                               theTolerance,
-                                               true);
-  if (!myIsPreviewMode) {
-    dumpGroupsList(aPythonDump, aGroups);
-    aPythonDump << this << ".RotationSweepMakeGroups( "
-                << theIDsOfElements        << ", "
-                << theAxis                   << ", "
-                << TVar( theAngleInRadians ) << ", "
-                << TVar( theNbOfSteps      ) << ", "
-                << TVar( theTolerance      ) << " )";
+  ExtrusionParams params( theStepVector, theNbOfSteps, theToMakeGroups );
+
+  TIDSortedElemSet elemsNodes[2];
+  for ( int i = 0, nb = theNodes.length(); i < nb; ++i ) {
+    SMDS_ElemIteratorPtr nIt = myMesh_i->GetElements( theNodes[i], SMESH::NODE );
+    while ( nIt->more() ) elemsNodes[1].insert( nIt->next() );
   }
-  return aGroups;
-}
+  for ( int i = 0, nb = theEdges.length(); i < nb; ++i )
+    idSourceToSet( theEdges[i], getMeshDS(), elemsNodes[0], SMDSAbs_Edge );
+  for ( int i = 0, nb = theFaces.length(); i < nb; ++i )
+    idSourceToSet( theFaces[i], getMeshDS(), elemsNodes[0], SMDSAbs_Face );
 
-//=======================================================================
-//function : RotationSweepObject
-//purpose  :
-//=======================================================================
+  TIDSortedElemSet* workElements = & elemsNodes[0], copyElements[2];
+  SMDSAbs_ElementType previewType = SMDSAbs_All; //SMDSAbs_Face;
+  if ( myIsPreviewMode )
+  {
+    // if ( (*elemsNodes.begin())->GetType() == SMDSAbs_Node )
+    //   previewType = SMDSAbs_Edge;
 
-void SMESH_MeshEditor_i::RotationSweepObject(SMESH::SMESH_IDSource_ptr theObject,
-                                             const SMESH::AxisStruct & theAxis,
-                                             CORBA::Double             theAngleInRadians,
-                                             CORBA::Long               theNbOfSteps,
-                                             CORBA::Double             theTolerance)
-  throw (SALOME::SALOME_Exception)
-{
-  if ( !myIsPreviewMode ) {
-    TPythonDump() << this << ".RotationSweepObject( "
-                  << theObject << ", "
-                  << theAxis << ", "
-                  << theAngleInRadians << ", "
-                  << theNbOfSteps << ", "
-                  << theTolerance << " )";
-  }
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  rotationSweep(anElementsId,
-                theAxis,
-                theAngleInRadians,
-                theNbOfSteps,
-                theTolerance,
-                false);
-}
-
-//=======================================================================
-//function : RotationSweepObject1D
-//purpose  :
-//=======================================================================
-
-void SMESH_MeshEditor_i::RotationSweepObject1D(SMESH::SMESH_IDSource_ptr theObject,
-                                               const SMESH::AxisStruct & theAxis,
-                                               CORBA::Double             theAngleInRadians,
-                                               CORBA::Long               theNbOfSteps,
-                                               CORBA::Double             theTolerance)
-  throw (SALOME::SALOME_Exception)
-{
-  if ( !myIsPreviewMode ) {
-    TPythonDump() << this << ".RotationSweepObject1D( "
-                  << theObject                 << ", "
-                  << theAxis                   << ", "
-                  << TVar( theAngleInRadians ) << ", "
-                  << TVar( theNbOfSteps      ) << ", "
-                  << TVar( theTolerance      ) << " )";
-  }
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  rotationSweep(anElementsId,
-                theAxis,
-                theAngleInRadians,
-                theNbOfSteps,
-                theTolerance,
-                false,
-                SMDSAbs_Edge);
-}
-
-//=======================================================================
-//function : RotationSweepObject2D
-//purpose  :
-//=======================================================================
-
-void SMESH_MeshEditor_i::RotationSweepObject2D(SMESH::SMESH_IDSource_ptr theObject,
-                                               const SMESH::AxisStruct & theAxis,
-                                               CORBA::Double             theAngleInRadians,
-                                               CORBA::Long               theNbOfSteps,
-                                               CORBA::Double             theTolerance)
-  throw (SALOME::SALOME_Exception)
-{
-  if ( !myIsPreviewMode ) {
-    TPythonDump() << this << ".RotationSweepObject2D( "
-                  << theObject                 << ", "
-                  << theAxis                   << ", "
-                  << TVar( theAngleInRadians ) << ", "
-                  << TVar( theNbOfSteps      ) << ", "
-                  << TVar( theTolerance      ) << " )";
-  }
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  rotationSweep(anElementsId,
-                theAxis,
-                theAngleInRadians,
-                theNbOfSteps,
-                theTolerance,
-                false,
-                SMDSAbs_Face);
-}
-
-//=======================================================================
-//function : RotationSweepObjectMakeGroups
-//purpose  :
-//=======================================================================
-
-SMESH::ListOfGroups*
-SMESH_MeshEditor_i::RotationSweepObjectMakeGroups(SMESH::SMESH_IDSource_ptr theObject,
-                                                  const SMESH::AxisStruct&  theAxis,
-                                                  CORBA::Double             theAngleInRadians,
-                                                  CORBA::Long               theNbOfSteps,
-                                                  CORBA::Double             theTolerance)
-  throw (SALOME::SALOME_Exception)
-{
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
-
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  SMESH::ListOfGroups *aGroups = rotationSweep(anElementsId,
-                                               theAxis,
-                                               theAngleInRadians,
-                                               theNbOfSteps,
-                                               theTolerance,
-                                               true);
-  if (!myIsPreviewMode) {
-    dumpGroupsList(aPythonDump, aGroups);
-    aPythonDump << this << ".RotationSweepObjectMakeGroups( "
-                << theObject << ", "
-                << theAxis << ", "
-                << theAngleInRadians << ", "
-                << theNbOfSteps << ", "
-                << theTolerance << " )";
-  }
-  return aGroups;
-}
-
-//=======================================================================
-//function : RotationSweepObject1DMakeGroups
-//purpose  :
-//=======================================================================
-
-SMESH::ListOfGroups*
-SMESH_MeshEditor_i::RotationSweepObject1DMakeGroups(SMESH::SMESH_IDSource_ptr theObject,
-                                                    const SMESH::AxisStruct&  theAxis,
-                                                    CORBA::Double             theAngleInRadians,
-                                                    CORBA::Long               theNbOfSteps,
-                                                    CORBA::Double             theTolerance)
-  throw (SALOME::SALOME_Exception)
-{
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
-
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  SMESH::ListOfGroups *aGroups = rotationSweep(anElementsId,
-                                               theAxis,
-                                               theAngleInRadians,
-                                               theNbOfSteps,
-                                               theTolerance,
-                                               true,
-                                               SMDSAbs_Edge);
-  if (!myIsPreviewMode) {
-    dumpGroupsList(aPythonDump, aGroups);
-    aPythonDump << this << ".RotationSweepObject1DMakeGroups( "
-                << theObject                 << ", "
-                << theAxis                   << ", "
-                << TVar( theAngleInRadians ) << ", "
-                << TVar( theNbOfSteps )      << ", "
-                << TVar( theTolerance )      << " )";
-  }
-  return aGroups;
-}
-
-//=======================================================================
-//function : RotationSweepObject2DMakeGroups
-//purpose  :
-//=======================================================================
-
-SMESH::ListOfGroups*
-SMESH_MeshEditor_i::RotationSweepObject2DMakeGroups(SMESH::SMESH_IDSource_ptr theObject,
-                                                    const SMESH::AxisStruct&  theAxis,
-                                                    CORBA::Double             theAngleInRadians,
-                                                    CORBA::Long               theNbOfSteps,
-                                                    CORBA::Double             theTolerance)
-  throw (SALOME::SALOME_Exception)
-{
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
+    SMDSAbs_ElementType select = SMDSAbs_All, avoid = SMDSAbs_Volume;
+    TPreviewMesh * tmpMesh = getPreviewMesh( previewType );
+    tmpMesh->Copy( elemsNodes[0], copyElements[0], select, avoid );
+    tmpMesh->Copy( elemsNodes[1], copyElements[1], select, avoid );
+    workElements = & copyElements[0];
 
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  SMESH::ListOfGroups *aGroups = rotationSweep(anElementsId,
-                                               theAxis,
-                                               theAngleInRadians,
-                                               theNbOfSteps,
-                                               theTolerance,
-                                               true,
-                                               SMDSAbs_Face);
-  if (!myIsPreviewMode) {
-    dumpGroupsList(aPythonDump, aGroups);
-    aPythonDump << this << ".RotationSweepObject2DMakeGroups( "
-                << theObject                 << ", "
-                << theAxis                   << ", "
-                << TVar( theAngleInRadians ) << ", "
-                << TVar( theNbOfSteps      ) << ", "
-                << TVar( theTolerance      ) << " )";
+    params.SetNoGroups();
   }
-  return aGroups;
-}
-
+  TPythonDump aPythonDump; // it is here to prevent dump of getGroups()
 
-//=======================================================================
-//function : extrusionSweep
-//purpose  :
-//=======================================================================
-
-SMESH::ListOfGroups*
-SMESH_MeshEditor_i::extrusionSweep(const SMESH::long_array & theIDsOfElements,
-                                   const SMESH::DirStruct &  theStepVector,
-                                   CORBA::Long               theNbOfSteps,
-                                   bool                      theMakeGroups,
-                                   const SMDSAbs_ElementType theElementType)
-  throw (SALOME::SALOME_Exception)
-{
-  SMESH_TRY;
-  initData();
-
-  TIDSortedElemSet elements, copyElements;
-  arrayToSet(theIDsOfElements, getMeshDS(), elements, theElementType);
+  ::SMESH_MeshEditor::TTElemOfElemListMap aHistory;
+  ::SMESH_MeshEditor::PGroupIDs groupIds =
+      getEditor().ExtrusionSweep( workElements, params, aHistory );
 
-  const SMESH::PointStruct * P = &theStepVector.PS;
-  gp_Vec stepVec( P->x, P->y, P->z );
+  SMESH::ListOfGroups * aGroups = theToMakeGroups ? getGroups( groupIds.get()) : 0;
 
-  TIDSortedElemSet* workElements = & elements;
+  declareMeshModified( /*isReComputeSafe=*/true ); // does not influence Compute()
 
-  SMDSAbs_ElementType aType = SMDSAbs_Face;
-  if (theElementType == SMDSAbs_Node)
+  if ( !myIsPreviewMode )
   {
-    aType = SMDSAbs_Edge;
+    dumpGroupsList( aPythonDump, aGroups );
+    aPythonDump << this<< ".ExtrusionSweepObjects( "
+                << theNodes             << ", "
+                << theEdges             << ", "
+                << theFaces             << ", "
+                << theStepVector        << ", "
+                << TVar( theNbOfSteps ) << ", "
+                << theToMakeGroups      << " )";
   }
-  if ( myIsPreviewMode ) {
-    SMDSAbs_ElementType select = SMDSAbs_All, avoid = SMDSAbs_Volume;
-    getPreviewMesh( aType )->Copy( elements, copyElements, select, avoid );
-    workElements = & copyElements;
-    theMakeGroups = false;
+  else
+  {
+    getPreviewMesh( previewType )->Remove( SMDSAbs_Volume );
   }
 
-  TElemOfElemListMap aHystory;
-  ::SMESH_MeshEditor::PGroupIDs groupIds = 
-      getEditor().ExtrusionSweep (*workElements, stepVec, theNbOfSteps, aHystory, theMakeGroups);
-
-  declareMeshModified( /*isReComputeSafe=*/true ); // does not influence Compute()
-
-  return theMakeGroups ? getGroups(groupIds.get()) : 0;
+  return aGroups ? aGroups : new SMESH::ListOfGroups;
 
   SMESH_CATCH( SMESH::throwCorbaException );
   return 0;
 }
 
 //=======================================================================
-//function : ExtrusionSweep
-//purpose  :
-//=======================================================================
-
-void SMESH_MeshEditor_i::ExtrusionSweep(const SMESH::long_array & theIDsOfElements,
-                                        const SMESH::DirStruct &  theStepVector,
-                                        CORBA::Long               theNbOfSteps)
-  throw (SALOME::SALOME_Exception)
-{
-  extrusionSweep (theIDsOfElements, theStepVector, theNbOfSteps, false );
-  if (!myIsPreviewMode) {
-    TPythonDump() << this << ".ExtrusionSweep( "
-                  << theIDsOfElements << ", " << theStepVector <<", " << TVar(theNbOfSteps) << " )";
-  }
-}
-
-//=======================================================================
-//function : ExtrusionSweep0D
-//purpose  :
-//=======================================================================
-
-void SMESH_MeshEditor_i::ExtrusionSweep0D(const SMESH::long_array & theIDsOfElements,
-                                          const SMESH::DirStruct &  theStepVector,
-                                          CORBA::Long               theNbOfSteps)
-  throw (SALOME::SALOME_Exception)
-{
-  extrusionSweep (theIDsOfElements, theStepVector, theNbOfSteps, false, SMDSAbs_Node );
-  if (!myIsPreviewMode) {
-    TPythonDump() << this << ".ExtrusionSweep0D( "
-                  << theIDsOfElements << ", " << theStepVector <<", " << TVar(theNbOfSteps)<< " )";
-  }
-}
-
-//=======================================================================
-//function : ExtrusionSweepObject
-//purpose  :
-//=======================================================================
-
-void SMESH_MeshEditor_i::ExtrusionSweepObject(SMESH::SMESH_IDSource_ptr theObject,
-                                              const SMESH::DirStruct &  theStepVector,
-                                              CORBA::Long               theNbOfSteps)
-  throw (SALOME::SALOME_Exception)
-{
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  extrusionSweep (anElementsId, theStepVector, theNbOfSteps, false );
-  if (!myIsPreviewMode) {
-    TPythonDump() << this << ".ExtrusionSweepObject( "
-                  << theObject << ", " << theStepVector << ", " << theNbOfSteps << " )";
-  }
-}
-
-//=======================================================================
-//function : ExtrusionSweepObject0D
-//purpose  :
-//=======================================================================
-
-void SMESH_MeshEditor_i::ExtrusionSweepObject0D(SMESH::SMESH_IDSource_ptr theObject,
-                                                const SMESH::DirStruct &  theStepVector,
-                                                CORBA::Long               theNbOfSteps)
-  throw (SALOME::SALOME_Exception)
-{
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  extrusionSweep (anElementsId, theStepVector, theNbOfSteps, false, SMDSAbs_Node );
-  if ( !myIsPreviewMode ) {
-    TPythonDump() << this << ".ExtrusionSweepObject0D( "
-                  << theObject << ", " << theStepVector << ", " << TVar( theNbOfSteps ) << " )";
-  }
-}
-
-//=======================================================================
-//function : ExtrusionSweepObject1D
-//purpose  :
-//=======================================================================
-
-void SMESH_MeshEditor_i::ExtrusionSweepObject1D(SMESH::SMESH_IDSource_ptr theObject,
-                                                const SMESH::DirStruct &  theStepVector,
-                                                CORBA::Long               theNbOfSteps)
-  throw (SALOME::SALOME_Exception)
-{
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  extrusionSweep (anElementsId, theStepVector, theNbOfSteps, false, SMDSAbs_Edge );
-  if ( !myIsPreviewMode ) {
-    TPythonDump() << this << ".ExtrusionSweepObject1D( "
-                  << theObject << ", " << theStepVector << ", " << TVar( theNbOfSteps ) << " )";
-  }
-}
-
-//=======================================================================
-//function : ExtrusionSweepObject2D
-//purpose  :
-//=======================================================================
-
-void SMESH_MeshEditor_i::ExtrusionSweepObject2D(SMESH::SMESH_IDSource_ptr theObject,
-                                                const SMESH::DirStruct &  theStepVector,
-                                                CORBA::Long               theNbOfSteps)
-  throw (SALOME::SALOME_Exception)
-{
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  extrusionSweep (anElementsId, theStepVector, theNbOfSteps, false, SMDSAbs_Face );
-  if ( !myIsPreviewMode ) {
-    TPythonDump() << this << ".ExtrusionSweepObject2D( "
-                  << theObject << ", " << theStepVector << ", " << TVar( theNbOfSteps ) << " )";
-  }
-}
-
-//=======================================================================
-//function : ExtrusionSweepMakeGroups
+//function : ExtrusionByNormal
 //purpose  :
 //=======================================================================
 
 SMESH::ListOfGroups*
-SMESH_MeshEditor_i::ExtrusionSweepMakeGroups(const SMESH::long_array& theIDsOfElements,
-                                             const SMESH::DirStruct&  theStepVector,
-                                             CORBA::Long              theNbOfSteps)
+SMESH_MeshEditor_i::ExtrusionByNormal(const SMESH::ListOfIDSources& objects,
+                                      CORBA::Double                 stepSize,
+                                      CORBA::Long                   nbOfSteps,
+                                      CORBA::Boolean                byAverageNormal,
+                                      CORBA::Boolean                useInputElemsOnly,
+                                      CORBA::Boolean                makeGroups,
+                                      CORBA::Short                  dim)
   throw (SALOME::SALOME_Exception)
 {
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
-
-  SMESH::ListOfGroups* aGroups = extrusionSweep(theIDsOfElements, theStepVector, theNbOfSteps, true);
-
-  if (!myIsPreviewMode) {
-    dumpGroupsList(aPythonDump, aGroups);
-    aPythonDump << this << ".ExtrusionSweepMakeGroups( " << theIDsOfElements
-                << ", " << theStepVector <<", " << TVar( theNbOfSteps ) << " )";
-  }
-  return aGroups;
-}
-
-//=======================================================================
-//function : ExtrusionSweepMakeGroups0D
-//purpose  :
-//=======================================================================
+  SMESH_TRY;
+  initData();
 
-SMESH::ListOfGroups*
-SMESH_MeshEditor_i::ExtrusionSweepMakeGroups0D(const SMESH::long_array& theIDsOfElements,
-                                               const SMESH::DirStruct&  theStepVector,
-                                               CORBA::Long              theNbOfSteps)
-  throw (SALOME::SALOME_Exception)
-{
   TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
 
-  SMESH::ListOfGroups* aGroups = extrusionSweep(theIDsOfElements, theStepVector, theNbOfSteps, true,SMDSAbs_Node);
+  ExtrusionParams params( stepSize, nbOfSteps, dim,
+                          byAverageNormal, useInputElemsOnly, makeGroups );
 
-  if (!myIsPreviewMode) {
-    dumpGroupsList(aPythonDump, aGroups);
-    aPythonDump << this << ".ExtrusionSweepMakeGroups0D( " << theIDsOfElements
-                << ", " << theStepVector <<", " << TVar( theNbOfSteps ) << " )";
+  SMDSAbs_ElementType elemType = ( dim == 1 ? SMDSAbs_Edge : SMDSAbs_Face );
+  if ( objects.length() > 0 && !SMESH::DownCast<SMESH_Mesh_i*>( objects[0] ))
+  {
+    SMESH::array_of_ElementType_var elemTypes = objects[0]->GetTypes();
+    if (( elemTypes->length() == 1 ) &&
+        ( elemTypes[0] == SMESH::EDGE || elemTypes[0] == SMESH::FACE ))
+      elemType = ( SMDSAbs_ElementType ) elemTypes[0];
   }
-  return aGroups;
-}
-
-//=======================================================================
-//function : ExtrusionSweepObjectMakeGroups
-//purpose  :
-//=======================================================================
 
-SMESH::ListOfGroups*
-SMESH_MeshEditor_i::ExtrusionSweepObjectMakeGroups(SMESH::SMESH_IDSource_ptr theObject,
-                                                   const SMESH::DirStruct&   theStepVector,
-                                                   CORBA::Long               theNbOfSteps)
-  throw (SALOME::SALOME_Exception)
-{
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
+  TIDSortedElemSet elemsNodes[2];
+  for ( int i = 0, nb = objects.length(); i < nb; ++i )
+    idSourceToSet( objects[i], getMeshDS(), elemsNodes[0], elemType );
 
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  SMESH::ListOfGroups * aGroups = extrusionSweep(anElementsId, theStepVector, theNbOfSteps, true);
+  TIDSortedElemSet* workElements = & elemsNodes[0], copyElements[2];
+  SMDSAbs_ElementType previewType = SMDSAbs_Face;
+  if ( myIsPreviewMode )
+  {
+    SMDSAbs_ElementType select = SMDSAbs_All, avoid = SMDSAbs_Volume;
+    TPreviewMesh * tmpMesh = getPreviewMesh( previewType );
+    tmpMesh->Copy( elemsNodes[0], copyElements[0], select, avoid );
+    workElements = & copyElements[0];
 
-  if (!myIsPreviewMode) {
-    dumpGroupsList(aPythonDump, aGroups);
-    aPythonDump << this << ".ExtrusionSweepObjectMakeGroups( " << theObject
-                << ", " << theStepVector << ", " << theNbOfSteps << " )";
+    params.SetNoGroups();
   }
-  return aGroups;
-}
 
-//=======================================================================
-//function : ExtrusionSweepObject0DMakeGroups
-//purpose  :
-//=======================================================================
+  ::SMESH_MeshEditor::TTElemOfElemListMap aHistory;
+  ::SMESH_MeshEditor::PGroupIDs groupIds =
+      getEditor().ExtrusionSweep( workElements, params, aHistory );
 
-SMESH::ListOfGroups*
-SMESH_MeshEditor_i::ExtrusionSweepObject0DMakeGroups(SMESH::SMESH_IDSource_ptr theObject,
-                                                     const SMESH::DirStruct&   theStepVector,
-                                                     CORBA::Long               theNbOfSteps)
-  throw (SALOME::SALOME_Exception)
-{
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
+  SMESH::ListOfGroups * aGroups = makeGroups ? getGroups( groupIds.get()) : 0;
 
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  SMESH::ListOfGroups * aGroups = extrusionSweep(anElementsId, theStepVector,
-                                                 theNbOfSteps, true, SMDSAbs_Node);
   if (!myIsPreviewMode) {
     dumpGroupsList(aPythonDump, aGroups);
-    aPythonDump << this << ".ExtrusionSweepObject0DMakeGroups( " << theObject
-                << ", " << theStepVector << ", " << TVar( theNbOfSteps ) << " )";
+    aPythonDump << this << ".ExtrusionByNormal( " << objects
+                << ", " << TVar( stepSize )
+                << ", " << TVar( nbOfSteps )
+                << ", " << byAverageNormal
+                << ", " << useInputElemsOnly
+                << ", " << makeGroups
+                << ", " << dim
+                << " )";
   }
-  return aGroups;
-}
-
-//=======================================================================
-//function : ExtrusionSweepObject1DMakeGroups
-//purpose  :
-//=======================================================================
-
-SMESH::ListOfGroups*
-SMESH_MeshEditor_i::ExtrusionSweepObject1DMakeGroups(SMESH::SMESH_IDSource_ptr theObject,
-                                                     const SMESH::DirStruct&   theStepVector,
-                                                     CORBA::Long               theNbOfSteps)
-  throw (SALOME::SALOME_Exception)
-{
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
-
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  SMESH::ListOfGroups * aGroups = extrusionSweep(anElementsId, theStepVector,
-                                                 theNbOfSteps, true, SMDSAbs_Edge);
-  if (!myIsPreviewMode) {
-    dumpGroupsList(aPythonDump, aGroups);
-    aPythonDump << this << ".ExtrusionSweepObject1DMakeGroups( " << theObject
-                << ", " << theStepVector << ", " << TVar( theNbOfSteps ) << " )";
+  else
+  {
+    getPreviewMesh( previewType )->Remove( SMDSAbs_Volume );
   }
-  return aGroups;
-}
 
-//=======================================================================
-//function : ExtrusionSweepObject2DMakeGroups
-//purpose  :
-//=======================================================================
+  declareMeshModified( /*isReComputeSafe=*/true ); // does not influence Compute()
 
-SMESH::ListOfGroups*
-SMESH_MeshEditor_i::ExtrusionSweepObject2DMakeGroups(SMESH::SMESH_IDSource_ptr theObject,
-                                                     const SMESH::DirStruct&   theStepVector,
-                                                     CORBA::Long               theNbOfSteps)
-  throw (SALOME::SALOME_Exception)
-{
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
+  return aGroups ? aGroups : new SMESH::ListOfGroups;
 
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  SMESH::ListOfGroups * aGroups = extrusionSweep(anElementsId, theStepVector,
-                                                 theNbOfSteps, true, SMDSAbs_Face);
-  if (!myIsPreviewMode) {
-    dumpGroupsList(aPythonDump, aGroups);
-    aPythonDump << this << ".ExtrusionSweepObject2DMakeGroups( " << theObject
-                << ", " << theStepVector << ", " << TVar( theNbOfSteps ) << " )";
-  }
-  return aGroups;
+  SMESH_CATCH( SMESH::throwCorbaException );
+  return 0;
 }
 
-
 //=======================================================================
-//function : advancedExtrusion
+//function : AdvancedExtrusion
 //purpose  :
 //=======================================================================
 
 SMESH::ListOfGroups*
-SMESH_MeshEditor_i::advancedExtrusion(const SMESH::long_array & theIDsOfElements,
+SMESH_MeshEditor_i::AdvancedExtrusion(const SMESH::long_array & theIDsOfElements,
                                       const SMESH::DirStruct &  theStepVector,
                                       CORBA::Long               theNbOfSteps,
                                       CORBA::Long               theExtrFlags,
                                       CORBA::Double             theSewTolerance,
-                                      const bool                theMakeGroups)
+                                      CORBA::Boolean            theMakeGroups)
   throw (SALOME::SALOME_Exception)
 {
   SMESH_TRY;
   initData();
 
-  TIDSortedElemSet elements;
-  arrayToSet(theIDsOfElements, getMeshDS(), elements);
+  TPythonDump aPythonDump; // it is here to prevent dump of getGroups()
 
-  const SMESH::PointStruct * P = &theStepVector.PS;
-  gp_Vec stepVec( P->x, P->y, P->z );
+  ExtrusionParams params( theStepVector, theNbOfSteps, theMakeGroups,
+                          theExtrFlags, theSewTolerance );
 
-  TElemOfElemListMap aHystory;
-  ::SMESH_MeshEditor::PGroupIDs groupIds =
-      getEditor().ExtrusionSweep (elements, stepVec, theNbOfSteps, aHystory,
-                                  theMakeGroups, theExtrFlags, theSewTolerance);
+  TIDSortedElemSet elemsNodes[2];
+  arrayToSet( theIDsOfElements, getMeshDS(), elemsNodes[0] );
 
-  declareMeshModified( /*isReComputeSafe=*/true );
+  ::SMESH_MeshEditor::TTElemOfElemListMap aHistory;
+  ::SMESH_MeshEditor::PGroupIDs groupIds =
+      getEditor().ExtrusionSweep( elemsNodes, params, aHistory );
 
-  return theMakeGroups ? getGroups(groupIds.get()) : 0;
+  SMESH::ListOfGroups * aGroups = theMakeGroups ? getGroups( groupIds.get()) : 0;
 
-  SMESH_CATCH( SMESH::throwCorbaException );
-  return 0;
-}
-
-//=======================================================================
-//function : AdvancedExtrusion
-//purpose  :
-//=======================================================================
+  declareMeshModified( /*isReComputeSafe=*/true ); // does not influence Compute()
 
-void SMESH_MeshEditor_i::AdvancedExtrusion(const SMESH::long_array & theIDsOfElements,
-                                           const SMESH::DirStruct &  theStepVector,
-                                           CORBA::Long               theNbOfSteps,
-                                           CORBA::Long               theExtrFlags,
-                                           CORBA::Double             theSewTolerance)
-  throw (SALOME::SALOME_Exception)
-{
   if ( !myIsPreviewMode ) {
-    TPythonDump() << "stepVector = " << theStepVector;
-    TPythonDump() << this << ".AdvancedExtrusion("
-                  << theIDsOfElements
-                  << ", stepVector, "
-                  << theNbOfSteps << ","
-                  << theExtrFlags << ", "
-                  << theSewTolerance <<  " )";
-  }
-  advancedExtrusion( theIDsOfElements,
-                     theStepVector,
-                     theNbOfSteps,
-                     theExtrFlags,
-                     theSewTolerance,
-                     false);
-}
-
-//=======================================================================
-//function : AdvancedExtrusionMakeGroups
-//purpose  :
-//=======================================================================
-SMESH::ListOfGroups*
-SMESH_MeshEditor_i::AdvancedExtrusionMakeGroups(const SMESH::long_array& theIDsOfElements,
-                                                const SMESH::DirStruct&  theStepVector,
-                                                CORBA::Long              theNbOfSteps,
-                                                CORBA::Long              theExtrFlags,
-                                                CORBA::Double            theSewTolerance)
-  throw (SALOME::SALOME_Exception)
-{
-  if (!myIsPreviewMode) {
-    TPythonDump() << "stepVector = " << theStepVector;
-  }
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
-
-  SMESH::ListOfGroups * aGroups = advancedExtrusion( theIDsOfElements,
-                                                     theStepVector,
-                                                     theNbOfSteps,
-                                                     theExtrFlags,
-                                                     theSewTolerance,
-                                                     true);
-
-  if (!myIsPreviewMode) {
     dumpGroupsList(aPythonDump, aGroups);
-    aPythonDump << this << ".AdvancedExtrusionMakeGroups("
-                << theIDsOfElements
-                << ", stepVector, "
-                << theNbOfSteps << ","
+    aPythonDump << this << ".AdvancedExtrusion"
+                << theIDsOfElements << ", "
+                << theStepVector << ", "
+                << theNbOfSteps << ", "
                 << theExtrFlags << ", "
-                << theSewTolerance <<  " )";
-  }
-  return aGroups;
-}
-
-
-//================================================================================
-/*!
- * \brief Convert extrusion error to IDL enum
- */
-//================================================================================
-
-#define RETCASE(enm) case ::SMESH_MeshEditor::enm: return SMESH::SMESH_MeshEditor::enm;
-
-static SMESH::SMESH_MeshEditor::Extrusion_Error convExtrError( const::SMESH_MeshEditor::Extrusion_Error e )
-{
-  switch ( e ) {
-    RETCASE( EXTR_OK );
-    RETCASE( EXTR_NO_ELEMENTS );
-    RETCASE( EXTR_PATH_NOT_EDGE );
-    RETCASE( EXTR_BAD_PATH_SHAPE );
-    RETCASE( EXTR_BAD_STARTING_NODE );
-    RETCASE( EXTR_BAD_ANGLES_NUMBER );
-    RETCASE( EXTR_CANT_GET_TANGENT );
-  }
-  return SMESH::SMESH_MeshEditor::EXTR_OK;
-}
-
-
-//=======================================================================
-//function : extrusionAlongPath
-//purpose  :
-//=======================================================================
-SMESH::ListOfGroups*
-SMESH_MeshEditor_i::extrusionAlongPath(const SMESH::long_array &   theIDsOfElements,
-                                       SMESH::SMESH_Mesh_ptr       thePathMesh,
-                                       GEOM::GEOM_Object_ptr       thePathShape,
-                                       CORBA::Long                 theNodeStart,
-                                       CORBA::Boolean              theHasAngles,
-                                       const SMESH::double_array & theAngles,
-                                       CORBA::Boolean              theHasRefPoint,
-                                       const SMESH::PointStruct &  theRefPoint,
-                                       const bool                  theMakeGroups,
-                                       SMESH::SMESH_MeshEditor::Extrusion_Error & theError,
-                                       const SMDSAbs_ElementType   theElementType)
-  throw (SALOME::SALOME_Exception)
-{
-  SMESH_TRY;
-  MESSAGE("extrusionAlongPath");
-  initData();
-
-  if ( thePathMesh->_is_nil() || thePathShape->_is_nil() ) {
-    theError = SMESH::SMESH_MeshEditor::EXTR_BAD_PATH_SHAPE;
-    return 0;
-  }
-  SMESH_Mesh_i* aMeshImp = SMESH::DownCast<SMESH_Mesh_i*>( thePathMesh );
-
-  TopoDS_Shape aShape = SMESH_Gen_i::GetSMESHGen()->GeomObjectToShape( thePathShape );
-  SMESH_subMesh* aSubMesh = aMeshImp->GetImpl().GetSubMesh( aShape );
-
-  if ( !aSubMesh || !aSubMesh->GetSubMeshDS()) {
-    theError = SMESH::SMESH_MeshEditor::EXTR_BAD_PATH_SHAPE;
-    return 0;
-  }
-
-  SMDS_MeshNode* nodeStart = (SMDS_MeshNode*)aMeshImp->GetImpl().GetMeshDS()->FindNode(theNodeStart);
-  if ( !nodeStart ) {
-    theError = SMESH::SMESH_MeshEditor::EXTR_BAD_STARTING_NODE;
-    return 0;
-  }
-
-  TIDSortedElemSet elements;
-  arrayToSet(theIDsOfElements, getMeshDS(), elements, theElementType);
-
-  list<double> angles;
-  for (int i = 0; i < theAngles.length(); i++) {
-    angles.push_back( theAngles[i] );
-  }
-
-  gp_Pnt refPnt( theRefPoint.x, theRefPoint.y, theRefPoint.z );
-
-  int nbOldGroups = myMesh->NbGroup();
-
-  ::SMESH_MeshEditor::Extrusion_Error error =
-      getEditor().ExtrusionAlongTrack( elements, aSubMesh, nodeStart,
-                                    theHasAngles, angles, false,
-                                    theHasRefPoint, refPnt, theMakeGroups );
-
-  declareMeshModified( /*isReComputeSafe=*/true );
-  theError = convExtrError( error );
-
-  if ( theMakeGroups ) {
-    list<int> groupIDs = myMesh->GetGroupIds();
-    list<int>::iterator newBegin = groupIDs.begin();
-    std::advance( newBegin, nbOldGroups ); // skip old groups
-    groupIDs.erase( groupIDs.begin(), newBegin );
-    return getGroups( & groupIDs );
-  }
-  return 0;
-
-  SMESH_CATCH( SMESH::throwCorbaException );
-  return 0;
-}
-
-//=======================================================================
-//function : extrusionAlongPathX
-//purpose  :
-//=======================================================================
-
-SMESH::ListOfGroups*
-SMESH_MeshEditor_i::extrusionAlongPathX(const SMESH::long_array &  IDsOfElements,
-                                        SMESH::SMESH_IDSource_ptr  Path,
-                                        CORBA::Long                NodeStart,
-                                        CORBA::Boolean             HasAngles,
-                                        const SMESH::double_array& Angles,
-                                        CORBA::Boolean             LinearVariation,
-                                        CORBA::Boolean             HasRefPoint,
-                                        const SMESH::PointStruct&  RefPoint,
-                                        bool                       MakeGroups,
-                                        const SMDSAbs_ElementType  ElementType,
-                                        SMESH::SMESH_MeshEditor::Extrusion_Error & Error)
-  throw (SALOME::SALOME_Exception)
-{
-  SMESH_TRY;
-  SMESH::ListOfGroups* EmptyGr = new SMESH::ListOfGroups;
-
-  initData();
-
-  list<double> angles;
-  for (int i = 0; i < Angles.length(); i++) {
-    angles.push_back( Angles[i] );
-  }
-  gp_Pnt refPnt( RefPoint.x, RefPoint.y, RefPoint.z );
-  int nbOldGroups = myMesh->NbGroup();
-
-  if ( Path->_is_nil() ) {
-    Error = SMESH::SMESH_MeshEditor::EXTR_BAD_PATH_SHAPE;
-    return EmptyGr;
-  }
-
-  TIDSortedElemSet elements, copyElements;
-  arrayToSet(IDsOfElements, getMeshDS(), elements, ElementType);
-
-  TIDSortedElemSet* workElements = &elements;
-
-  if ( myIsPreviewMode )
-  {
-    SMDSAbs_ElementType select = SMDSAbs_All, avoid = SMDSAbs_Volume;
-    getPreviewMesh( SMDSAbs_Face )->Copy( elements, copyElements, select, avoid );
-    workElements = & copyElements;
-    MakeGroups = false;
-  }
-
-  ::SMESH_MeshEditor::Extrusion_Error error;
-
-  if ( SMESH_Mesh_i* aMeshImp = SMESH::DownCast<SMESH_Mesh_i*>( Path ))
-  {
-    // path as mesh
-    SMDS_MeshNode* aNodeStart =
-      (SMDS_MeshNode*)aMeshImp->GetImpl().GetMeshDS()->FindNode(NodeStart);
-    if ( !aNodeStart ) {
-      Error = SMESH::SMESH_MeshEditor::EXTR_BAD_STARTING_NODE;
-      return EmptyGr;
-    }
-    error = getEditor().ExtrusionAlongTrack( *workElements, &(aMeshImp->GetImpl()), aNodeStart,
-                                             HasAngles, angles, LinearVariation,
-                                             HasRefPoint, refPnt, MakeGroups );
-    declareMeshModified( /*isReComputeSafe=*/true );
-  }
-  else if ( SMESH_subMesh_i* aSubMeshImp = SMESH::DownCast<SMESH_subMesh_i*>( Path ))
-  {
-    // path as submesh
-    SMESH::SMESH_Mesh_ptr aPathMesh = aSubMeshImp->GetFather();
-    aMeshImp = SMESH::DownCast<SMESH_Mesh_i*>( aPathMesh );
-    SMDS_MeshNode* aNodeStart =
-      (SMDS_MeshNode*)aMeshImp->GetImpl().GetMeshDS()->FindNode(NodeStart);
-    if ( !aNodeStart ) {
-      Error = SMESH::SMESH_MeshEditor::EXTR_BAD_STARTING_NODE;
-      return EmptyGr;
-    }
-    SMESH_subMesh* aSubMesh =
-      aMeshImp->GetImpl().GetSubMeshContaining(aSubMeshImp->GetId());
-    error = getEditor().ExtrusionAlongTrack( *workElements, aSubMesh, aNodeStart,
-                                             HasAngles, angles, LinearVariation,
-                                             HasRefPoint, refPnt, MakeGroups );
-    declareMeshModified( /*isReComputeSafe=*/true );
-  }
-  else if ( SMESH::DownCast<SMESH_Group_i*>( Path ))
-  {
-    // path as group of 1D elements
-    // ????????
+                << theSewTolerance << ", "
+                << theMakeGroups << " )";
   }
   else
   {
-    // invalid path
-    Error = SMESH::SMESH_MeshEditor::EXTR_BAD_PATH_SHAPE;
-    return EmptyGr;
+    getPreviewMesh()->Remove( SMDSAbs_Volume );
   }
 
-  Error = convExtrError( error );
-
-  if ( MakeGroups ) {
-    list<int> groupIDs = myMesh->GetGroupIds();
-    list<int>::iterator newBegin = groupIDs.begin();
-    std::advance( newBegin, nbOldGroups ); // skip old groups
-    groupIDs.erase( groupIDs.begin(), newBegin );
-    return getGroups( & groupIDs );
-  }
-  return EmptyGr;
+  return aGroups ? aGroups : new SMESH::ListOfGroups;
 
   SMESH_CATCH( SMESH::throwCorbaException );
-  return 0;
-}
-
-//=======================================================================
-//function : ExtrusionAlongPath
-//purpose  :
-//=======================================================================
-
-SMESH::SMESH_MeshEditor::Extrusion_Error
-SMESH_MeshEditor_i::ExtrusionAlongPath(const SMESH::long_array &   theIDsOfElements,
-                                       SMESH::SMESH_Mesh_ptr       thePathMesh,
-                                       GEOM::GEOM_Object_ptr       thePathShape,
-                                       CORBA::Long                 theNodeStart,
-                                       CORBA::Boolean              theHasAngles,
-                                       const SMESH::double_array & theAngles,
-                                       CORBA::Boolean              theHasRefPoint,
-                                       const SMESH::PointStruct &  theRefPoint)
-  throw (SALOME::SALOME_Exception)
-{
-  MESSAGE("ExtrusionAlongPath");
-  if ( !myIsPreviewMode ) {
-    TPythonDump() << "error = " << this << ".ExtrusionAlongPath( "
-                  << theIDsOfElements << ", "
-                  << thePathMesh      << ", "
-                  << thePathShape     << ", "
-                  << theNodeStart     << ", "
-                  << theHasAngles     << ", "
-                  << theAngles        << ", "
-                  << theHasRefPoint   << ", "
-                  << "SMESH.PointStruct( "
-                  << ( theHasRefPoint ? theRefPoint.x : 0 ) << ", "
-                  << ( theHasRefPoint ? theRefPoint.y : 0 ) << ", "
-                  << ( theHasRefPoint ? theRefPoint.z : 0 ) << " ) )";
-  }
-  SMESH::SMESH_MeshEditor::Extrusion_Error anError;
-  extrusionAlongPath( theIDsOfElements,
-                      thePathMesh,
-                      thePathShape,
-                      theNodeStart,
-                      theHasAngles,
-                      theAngles,
-                      theHasRefPoint,
-                      theRefPoint,
-                      false,
-                      anError);
-  return anError;
-}
-
-//=======================================================================
-//function : ExtrusionAlongPathObject
-//purpose  :
-//=======================================================================
-
-SMESH::SMESH_MeshEditor::Extrusion_Error
-SMESH_MeshEditor_i::ExtrusionAlongPathObject(SMESH::SMESH_IDSource_ptr   theObject,
-                                             SMESH::SMESH_Mesh_ptr       thePathMesh,
-                                             GEOM::GEOM_Object_ptr       thePathShape,
-                                             CORBA::Long                 theNodeStart,
-                                             CORBA::Boolean              theHasAngles,
-                                             const SMESH::double_array & theAngles,
-                                             CORBA::Boolean              theHasRefPoint,
-                                             const SMESH::PointStruct &  theRefPoint)
-  throw (SALOME::SALOME_Exception)
-{
-  if ( !myIsPreviewMode ) {
-    TPythonDump() << "error = " << this << ".ExtrusionAlongPathObject( "
-                  << theObject        << ", "
-                  << thePathMesh      << ", "
-                  << thePathShape     << ", "
-                  << theNodeStart     << ", "
-                  << theHasAngles     << ", "
-                  << theAngles        << ", "
-                  << theHasRefPoint   << ", "
-                  << "SMESH.PointStruct( "
-                  << ( theHasRefPoint ? theRefPoint.x : 0 ) << ", "
-                  << ( theHasRefPoint ? theRefPoint.y : 0 ) << ", "
-                  << ( theHasRefPoint ? theRefPoint.z : 0 ) << " ) )";
-  }
-  SMESH::SMESH_MeshEditor::Extrusion_Error anError;
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  extrusionAlongPath( anElementsId,
-                      thePathMesh,
-                      thePathShape,
-                      theNodeStart,
-                      theHasAngles,
-                      theAngles,
-                      theHasRefPoint,
-                      theRefPoint,
-                      false,
-                      anError);
-  return anError;
-}
-
-//=======================================================================
-//function : ExtrusionAlongPathObject1D
-//purpose  :
-//=======================================================================
-
-SMESH::SMESH_MeshEditor::Extrusion_Error
-SMESH_MeshEditor_i::ExtrusionAlongPathObject1D(SMESH::SMESH_IDSource_ptr   theObject,
-                                               SMESH::SMESH_Mesh_ptr       thePathMesh,
-                                               GEOM::GEOM_Object_ptr       thePathShape,
-                                               CORBA::Long                 theNodeStart,
-                                               CORBA::Boolean              theHasAngles,
-                                               const SMESH::double_array & theAngles,
-                                               CORBA::Boolean              theHasRefPoint,
-                                               const SMESH::PointStruct &  theRefPoint)
-  throw (SALOME::SALOME_Exception)
-{
-  if ( !myIsPreviewMode ) {
-    TPythonDump() << "error = " << this << ".ExtrusionAlongPathObject1D( "
-                  << theObject        << ", "
-                  << thePathMesh      << ", "
-                  << thePathShape     << ", "
-                  << theNodeStart     << ", "
-                  << theHasAngles     << ", "
-                  << theAngles        << ", "
-                  << theHasRefPoint   << ", "
-                  << "SMESH.PointStruct( "
-                  << ( theHasRefPoint ? theRefPoint.x : 0 ) << ", "
-                  << ( theHasRefPoint ? theRefPoint.y : 0 ) << ", "
-                  << ( theHasRefPoint ? theRefPoint.z : 0 ) << " ) )";
-  }
-  SMESH::SMESH_MeshEditor::Extrusion_Error anError;
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  extrusionAlongPath( anElementsId,
-                      thePathMesh,
-                      thePathShape,
-                      theNodeStart,
-                      theHasAngles,
-                      theAngles,
-                      theHasRefPoint,
-                      theRefPoint,
-                      false,
-                      anError,
-                      SMDSAbs_Edge);
-  return anError;
-}
-
-//=======================================================================
-//function : ExtrusionAlongPathObject2D
-//purpose  :
-//=======================================================================
-
-SMESH::SMESH_MeshEditor::Extrusion_Error
-SMESH_MeshEditor_i::ExtrusionAlongPathObject2D(SMESH::SMESH_IDSource_ptr   theObject,
-                                               SMESH::SMESH_Mesh_ptr       thePathMesh,
-                                               GEOM::GEOM_Object_ptr       thePathShape,
-                                               CORBA::Long                 theNodeStart,
-                                               CORBA::Boolean              theHasAngles,
-                                               const SMESH::double_array & theAngles,
-                                               CORBA::Boolean              theHasRefPoint,
-                                               const SMESH::PointStruct &  theRefPoint)
-  throw (SALOME::SALOME_Exception)
-{
-  if ( !myIsPreviewMode ) {
-    TPythonDump() << "error = " << this << ".ExtrusionAlongPathObject2D( "
-                  << theObject        << ", "
-                  << thePathMesh      << ", "
-                  << thePathShape     << ", "
-                  << theNodeStart     << ", "
-                  << theHasAngles     << ", "
-                  << theAngles        << ", "
-                  << theHasRefPoint   << ", "
-                  << "SMESH.PointStruct( "
-                  << ( theHasRefPoint ? theRefPoint.x : 0 ) << ", "
-                  << ( theHasRefPoint ? theRefPoint.y : 0 ) << ", "
-                  << ( theHasRefPoint ? theRefPoint.z : 0 ) << " ) )";
-  }
-  SMESH::SMESH_MeshEditor::Extrusion_Error anError;
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  extrusionAlongPath( anElementsId,
-                      thePathMesh,
-                      thePathShape,
-                      theNodeStart,
-                      theHasAngles,
-                      theAngles,
-                      theHasRefPoint,
-                      theRefPoint,
-                      false,
-                      anError,
-                      SMDSAbs_Face);
-  return anError;
-}
-
-
-//=======================================================================
-//function : ExtrusionAlongPathMakeGroups
-//purpose  :
-//=======================================================================
-
-SMESH::ListOfGroups*
-SMESH_MeshEditor_i::ExtrusionAlongPathMakeGroups(const SMESH::long_array&   theIDsOfElements,
-                                                 SMESH::SMESH_Mesh_ptr      thePathMesh,
-                                                 GEOM::GEOM_Object_ptr      thePathShape,
-                                                 CORBA::Long                theNodeStart,
-                                                 CORBA::Boolean             theHasAngles,
-                                                 const SMESH::double_array& theAngles,
-                                                 CORBA::Boolean             theHasRefPoint,
-                                                 const SMESH::PointStruct&  theRefPoint,
-                                                 SMESH::SMESH_MeshEditor::Extrusion_Error& Error)
-  throw (SALOME::SALOME_Exception)
-{
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
-
-  SMESH::ListOfGroups * aGroups =  extrusionAlongPath( theIDsOfElements,
-                                                       thePathMesh,
-                                                       thePathShape,
-                                                       theNodeStart,
-                                                       theHasAngles,
-                                                       theAngles,
-                                                       theHasRefPoint,
-                                                       theRefPoint,
-                                                       true,
-                                                       Error);
-  if (!myIsPreviewMode) {
-    bool isDumpGroups = aGroups && aGroups->length() > 0;
-    if (isDumpGroups)
-      aPythonDump << "(" << aGroups << ", error)";
-    else
-      aPythonDump <<"error";
-
-    aPythonDump<<" = "<< this << ".ExtrusionAlongPathMakeGroups( "
-               << theIDsOfElements << ", "
-               << thePathMesh      << ", "
-               << thePathShape     << ", "
-               << theNodeStart     << ", "
-               << theHasAngles     << ", "
-               << theAngles        << ", "
-               << theHasRefPoint   << ", "
-               << "SMESH.PointStruct( "
-               << ( theHasRefPoint ? theRefPoint.x : 0 ) << ", "
-               << ( theHasRefPoint ? theRefPoint.y : 0 ) << ", "
-               << ( theHasRefPoint ? theRefPoint.z : 0 ) << " ) )";
-  }
-  return aGroups;
-}
-
-//=======================================================================
-//function : ExtrusionAlongPathObjectMakeGroups
-//purpose  :
-//=======================================================================
-
-SMESH::ListOfGroups* SMESH_MeshEditor_i::
-ExtrusionAlongPathObjectMakeGroups(SMESH::SMESH_IDSource_ptr  theObject,
-                                   SMESH::SMESH_Mesh_ptr      thePathMesh,
-                                   GEOM::GEOM_Object_ptr      thePathShape,
-                                   CORBA::Long                theNodeStart,
-                                   CORBA::Boolean             theHasAngles,
-                                   const SMESH::double_array& theAngles,
-                                   CORBA::Boolean             theHasRefPoint,
-                                   const SMESH::PointStruct&  theRefPoint,
-                                   SMESH::SMESH_MeshEditor::Extrusion_Error& Error)
-  throw (SALOME::SALOME_Exception)
-{
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
-
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  SMESH::ListOfGroups * aGroups = extrusionAlongPath( anElementsId,
-                                                      thePathMesh,
-                                                      thePathShape,
-                                                      theNodeStart,
-                                                      theHasAngles,
-                                                      theAngles,
-                                                      theHasRefPoint,
-                                                      theRefPoint,
-                                                      true,
-                                                      Error);
-
-  if (!myIsPreviewMode) {
-    bool isDumpGroups = aGroups && aGroups->length() > 0;
-    if (isDumpGroups)
-      aPythonDump << "(" << aGroups << ", error)";
-    else
-      aPythonDump <<"error";
-
-    aPythonDump << " = " << this << ".ExtrusionAlongPathObjectMakeGroups( "
-                << theObject << ", "
-                << thePathMesh      << ", "
-                << thePathShape     << ", "
-                << theNodeStart     << ", "
-                << theHasAngles     << ", "
-                << theAngles        << ", "
-                << theHasRefPoint   << ", "
-                << "SMESH.PointStruct( "
-                << ( theHasRefPoint ? theRefPoint.x : 0 ) << ", "
-                << ( theHasRefPoint ? theRefPoint.y : 0 ) << ", "
-                << ( theHasRefPoint ? theRefPoint.z : 0 ) << " ) )";
-  }
-  return aGroups;
+  return 0;
 }
 
-//=======================================================================
-//function : ExtrusionAlongPathObject1DMakeGroups
-//purpose  :
-//=======================================================================
+//================================================================================
+/*!
+ * \brief Convert extrusion error to IDL enum
+ */
+//================================================================================
 
-SMESH::ListOfGroups* SMESH_MeshEditor_i::
-ExtrusionAlongPathObject1DMakeGroups(SMESH::SMESH_IDSource_ptr  theObject,
-                                     SMESH::SMESH_Mesh_ptr      thePathMesh,
-                                     GEOM::GEOM_Object_ptr      thePathShape,
-                                     CORBA::Long                theNodeStart,
-                                     CORBA::Boolean             theHasAngles,
-                                     const SMESH::double_array& theAngles,
-                                     CORBA::Boolean             theHasRefPoint,
-                                     const SMESH::PointStruct&  theRefPoint,
-                                     SMESH::SMESH_MeshEditor::Extrusion_Error& Error)
-  throw (SALOME::SALOME_Exception)
+namespace
 {
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
-
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  SMESH::ListOfGroups * aGroups = extrusionAlongPath( anElementsId,
-                                                      thePathMesh,
-                                                      thePathShape,
-                                                      theNodeStart,
-                                                      theHasAngles,
-                                                      theAngles,
-                                                      theHasRefPoint,
-                                                      theRefPoint,
-                                                      true,
-                                                      Error,
-                                                      SMDSAbs_Edge);
-
-  if (!myIsPreviewMode) {
-    bool isDumpGroups = aGroups && aGroups->length() > 0;
-    if (isDumpGroups)
-      aPythonDump << "(" << aGroups << ", error)";
-    else
-      aPythonDump << "error";
+#define RETCASE(enm) case ::SMESH_MeshEditor::enm: return SMESH::SMESH_MeshEditor::enm;
 
-    aPythonDump << " = " << this << ".ExtrusionAlongPathObject1DMakeGroups( "
-                << theObject << ", "
-                << thePathMesh      << ", "
-                << thePathShape     << ", "
-                << theNodeStart     << ", "
-                << theHasAngles     << ", "
-                << theAngles        << ", "
-                << theHasRefPoint   << ", "
-                << "SMESH.PointStruct( "
-                << ( theHasRefPoint ? theRefPoint.x : 0 ) << ", "
-                << ( theHasRefPoint ? theRefPoint.y : 0 ) << ", "
-                << ( theHasRefPoint ? theRefPoint.z : 0 ) << " ) )";
+  SMESH::SMESH_MeshEditor::Extrusion_Error convExtrError( ::SMESH_MeshEditor::Extrusion_Error e )
+  {
+    switch ( e ) {
+      RETCASE( EXTR_OK );
+      RETCASE( EXTR_NO_ELEMENTS );
+      RETCASE( EXTR_PATH_NOT_EDGE );
+      RETCASE( EXTR_BAD_PATH_SHAPE );
+      RETCASE( EXTR_BAD_STARTING_NODE );
+      RETCASE( EXTR_BAD_ANGLES_NUMBER );
+      RETCASE( EXTR_CANT_GET_TANGENT );
+    }
+    return SMESH::SMESH_MeshEditor::EXTR_OK;
   }
-  return aGroups;
 }
 
 //=======================================================================
-//function : ExtrusionAlongPathObject2DMakeGroups
+//function : extrusionAlongPath
 //purpose  :
 //=======================================================================
-
-SMESH::ListOfGroups* SMESH_MeshEditor_i::
-ExtrusionAlongPathObject2DMakeGroups(SMESH::SMESH_IDSource_ptr  theObject,
-                                     SMESH::SMESH_Mesh_ptr      thePathMesh,
-                                     GEOM::GEOM_Object_ptr      thePathShape,
-                                     CORBA::Long                theNodeStart,
-                                     CORBA::Boolean             theHasAngles,
-                                     const SMESH::double_array& theAngles,
-                                     CORBA::Boolean             theHasRefPoint,
-                                     const SMESH::PointStruct&  theRefPoint,
-                                     SMESH::SMESH_MeshEditor::Extrusion_Error& Error)
+SMESH::ListOfGroups*
+SMESH_MeshEditor_i::ExtrusionAlongPathObjects(const SMESH::ListOfIDSources & theNodes,
+                                              const SMESH::ListOfIDSources & theEdges,
+                                              const SMESH::ListOfIDSources & theFaces,
+                                              SMESH::SMESH_IDSource_ptr      thePathMesh,
+                                              GEOM::GEOM_Object_ptr          thePathShape,
+                                              CORBA::Long                    theNodeStart,
+                                              CORBA::Boolean                 theHasAngles,
+                                              const SMESH::double_array &    theAngles,
+                                              CORBA::Boolean                 theLinearVariation,
+                                              CORBA::Boolean                 theHasRefPoint,
+                                              const SMESH::PointStruct &     theRefPoint,
+                                              bool                           theMakeGroups,
+                                              SMESH::SMESH_MeshEditor::Extrusion_Error& theError)
   throw (SALOME::SALOME_Exception)
 {
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
+  SMESH_TRY;
+  initData();
 
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  SMESH::ListOfGroups * aGroups = extrusionAlongPath( anElementsId,
-                                                      thePathMesh,
-                                                      thePathShape,
-                                                      theNodeStart,
-                                                      theHasAngles,
-                                                      theAngles,
-                                                      theHasRefPoint,
-                                                      theRefPoint,
-                                                      true,
-                                                      Error,
-                                                      SMDSAbs_Face);
+  SMESH::ListOfGroups_var aGroups = new SMESH::ListOfGroups;
 
-  if (!myIsPreviewMode) {
-    bool isDumpGroups = aGroups && aGroups->length() > 0;
-    if (isDumpGroups)
-      aPythonDump << "(" << aGroups << ", error)";
-    else
-      aPythonDump << "error";
+  theError = SMESH::SMESH_MeshEditor::EXTR_BAD_PATH_SHAPE;
+  if ( thePathMesh->_is_nil() )
+    return aGroups._retn();
 
-    aPythonDump << " = " << this << ".ExtrusionAlongPathObject2DMakeGroups( "
-                << theObject << ", "
-                << thePathMesh      << ", "
-                << thePathShape     << ", "
-                << theNodeStart     << ", "
-                << theHasAngles     << ", "
-                << theAngles        << ", "
-                << theHasRefPoint   << ", "
-                << "SMESH.PointStruct( "
-                << ( theHasRefPoint ? theRefPoint.x : 0 ) << ", "
-                << ( theHasRefPoint ? theRefPoint.y : 0 ) << ", "
-                << ( theHasRefPoint ? theRefPoint.z : 0 ) << " ) )";
+  // get a sub-mesh
+  SMESH_subMesh* aSubMesh = 0;
+  SMESH_Mesh_i* aMeshImp = SMESH::DownCast<SMESH_Mesh_i*>( thePathMesh );
+  if ( thePathShape->_is_nil() )
+  {
+    // thePathMesh should be either a sub-mesh or a mesh with 1D elements only
+    if ( SMESH_subMesh_i* sm = SMESH::DownCast<SMESH_subMesh_i*>( thePathMesh ))
+    {
+      SMESH::SMESH_Mesh_var mesh = thePathMesh->GetMesh();
+      aMeshImp = SMESH::DownCast<SMESH_Mesh_i*>( mesh );
+      if ( !aMeshImp ) return aGroups._retn();
+      aSubMesh = aMeshImp->GetImpl().GetSubMeshContaining( sm->GetId() );
+      if ( !aSubMesh ) return aGroups._retn();
+    }
+    else if ( !aMeshImp ||
+              aMeshImp->NbEdges() != aMeshImp->NbElements() )
+    {
+      return aGroups._retn();
+    }
+  }
+  else
+  {
+    if ( !aMeshImp ) return aGroups._retn();
+    TopoDS_Shape aShape = SMESH_Gen_i::GetSMESHGen()->GeomObjectToShape( thePathShape );
+    aSubMesh = aMeshImp->GetImpl().GetSubMesh( aShape );
+    if ( !aSubMesh || !aSubMesh->GetSubMeshDS() )
+      return aGroups._retn();
   }
-  return aGroups;
-}
 
-//=======================================================================
-//function : ExtrusionAlongPathObjX
-//purpose  :
-//=======================================================================
+  SMDS_MeshNode* nodeStart =
+    (SMDS_MeshNode*)aMeshImp->GetImpl().GetMeshDS()->FindNode(theNodeStart);
+  if ( !nodeStart ) {
+    theError = SMESH::SMESH_MeshEditor::EXTR_BAD_STARTING_NODE;
+    return aGroups._retn();
+  }
 
-SMESH::ListOfGroups* SMESH_MeshEditor_i::
-ExtrusionAlongPathObjX(SMESH::SMESH_IDSource_ptr  Object,
-                       SMESH::SMESH_IDSource_ptr  Path,
-                       CORBA::Long                NodeStart,
-                       CORBA::Boolean             HasAngles,
-                       const SMESH::double_array& Angles,
-                       CORBA::Boolean             LinearVariation,
-                       CORBA::Boolean             HasRefPoint,
-                       const SMESH::PointStruct&  RefPoint,
-                       CORBA::Boolean             MakeGroups,
-                       SMESH::ElementType         ElemType,
-                       SMESH::SMESH_MeshEditor::Extrusion_Error& Error)
-  throw (SALOME::SALOME_Exception)
-{
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
+  TIDSortedElemSet elemsNodes[2];
+  for ( int i = 0, nb = theNodes.length(); i < nb; ++i ) {
+    SMDS_ElemIteratorPtr nIt = myMesh_i->GetElements( theNodes[i], SMESH::NODE );
+    while ( nIt->more() ) elemsNodes[1].insert( nIt->next() );
+  }
+  for ( int i = 0, nb = theEdges.length(); i < nb; ++i )
+    idSourceToSet( theEdges[i], getMeshDS(), elemsNodes[0], SMDSAbs_Edge );
+  for ( int i = 0, nb = theFaces.length(); i < nb; ++i )
+    idSourceToSet( theFaces[i], getMeshDS(), elemsNodes[0], SMDSAbs_Face );
 
-  SMESH::long_array_var anElementsId = Object->GetIDs();
-  SMESH::ListOfGroups * aGroups = extrusionAlongPathX(anElementsId,
-                                                      Path,
-                                                      NodeStart,
-                                                      HasAngles,
-                                                      Angles,
-                                                      LinearVariation,
-                                                      HasRefPoint,
-                                                      RefPoint,
-                                                      MakeGroups,
-                                                      (SMDSAbs_ElementType)ElemType,
-                                                      Error);
+  list<double> angles;
+  for (int i = 0; i < theAngles.length(); i++) {
+    angles.push_back( theAngles[i] );
+  }
 
-  if (!myIsPreviewMode) {
-    bool isDumpGroups = aGroups && aGroups->length() > 0;
-    if (isDumpGroups)
-      aPythonDump << "(" << *aGroups << ", error)";
-    else
-      aPythonDump << "error";
-
-    aPythonDump << " = " << this << ".ExtrusionAlongPathObjX( "
-                << Object          << ", "
-                << Path            << ", "
-                << NodeStart       << ", "
-                << HasAngles       << ", "
-                << TVar( Angles )  << ", "
-                << LinearVariation << ", "
-                << HasRefPoint     << ", "
-                << "SMESH.PointStruct( "
-                << TVar( HasRefPoint ? RefPoint.x : 0 ) << ", "
-                << TVar( HasRefPoint ? RefPoint.y : 0 ) << ", "
-                << TVar( HasRefPoint ? RefPoint.z : 0 ) << " ), "
-                << MakeGroups << ", "
-                << ElemType << " )";
+  gp_Pnt refPnt( theRefPoint.x, theRefPoint.y, theRefPoint.z );
+
+  int nbOldGroups = myMesh->NbGroup();
+
+  TIDSortedElemSet* workElements = & elemsNodes[0], copyElements[2];
+  if ( myIsPreviewMode )
+  {
+    SMDSAbs_ElementType select = SMDSAbs_All, avoid = SMDSAbs_Volume;
+    TPreviewMesh * tmpMesh = getPreviewMesh();
+    tmpMesh->Copy( elemsNodes[0], copyElements[0], select, avoid );
+    tmpMesh->Copy( elemsNodes[1], copyElements[1], select, avoid );
+    workElements = & copyElements[0];
+    theMakeGroups = false;
   }
-  return aGroups;
-}
 
-//=======================================================================
-//function : ExtrusionAlongPathX
-//purpose  :
-//=======================================================================
+  ::SMESH_MeshEditor::Extrusion_Error error;
+  if ( !aSubMesh )
+    error = getEditor().ExtrusionAlongTrack( workElements, &(aMeshImp->GetImpl()), nodeStart,
+                                             theHasAngles, angles, theLinearVariation,
+                                             theHasRefPoint, refPnt, theMakeGroups );
+  else
+    error = getEditor().ExtrusionAlongTrack( workElements, aSubMesh, nodeStart,
+                                             theHasAngles, angles, theLinearVariation,
+                                             theHasRefPoint, refPnt, theMakeGroups );
 
-SMESH::ListOfGroups* SMESH_MeshEditor_i::
-ExtrusionAlongPathX(const SMESH::long_array&   IDsOfElements,
-                    SMESH::SMESH_IDSource_ptr  Path,
-                    CORBA::Long                NodeStart,
-                    CORBA::Boolean             HasAngles,
-                    const SMESH::double_array& Angles,
-                    CORBA::Boolean             LinearVariation,
-                    CORBA::Boolean             HasRefPoint,
-                    const SMESH::PointStruct&  RefPoint,
-                    CORBA::Boolean             MakeGroups,
-                    SMESH::ElementType         ElemType,
-                    SMESH::SMESH_MeshEditor::Extrusion_Error& Error)
-  throw (SALOME::SALOME_Exception)
-{
-  TPythonDump aPythonDump; // it is here to prevent dump of GetGroups()
+  declareMeshModified( /*isReComputeSafe=*/true );
+  theError = convExtrError( error );
 
-  SMESH::ListOfGroups * aGroups = extrusionAlongPathX(IDsOfElements,
-                                                      Path,
-                                                      NodeStart,
-                                                      HasAngles,
-                                                      Angles,
-                                                      LinearVariation,
-                                                      HasRefPoint,
-                                                      RefPoint,
-                                                      MakeGroups,
-                                                      (SMDSAbs_ElementType)ElemType,
-                                                      Error);
+  TPythonDump aPythonDump; // it is here to prevent dump of getGroups()
+  if ( theMakeGroups ) {
+    list<int> groupIDs = myMesh->GetGroupIds();
+    list<int>::iterator newBegin = groupIDs.begin();
+    std::advance( newBegin, nbOldGroups ); // skip old groups
+    groupIDs.erase( groupIDs.begin(), newBegin );
+    aGroups = getGroups( & groupIDs );
+    if ( ! &aGroups.in() ) aGroups = new SMESH::ListOfGroups;
+  }
 
-  if (!myIsPreviewMode) {
-    bool isDumpGroups = aGroups && aGroups->length() > 0;
-    if (isDumpGroups)
-      aPythonDump << "(" << *aGroups << ", error)";
-    else
-      aPythonDump <<"error";
-
-    aPythonDump << " = " << this << ".ExtrusionAlongPathX( "
-                << IDsOfElements   << ", "
-                << Path            << ", "
-                << NodeStart       << ", "
-                << HasAngles       << ", "
-                << TVar( Angles )  << ", "
-                << LinearVariation << ", "
-                << HasRefPoint     << ", "
+  if ( !myIsPreviewMode ) {
+    aPythonDump << "(" << aGroups << ", error) = "
+                << this << ".ExtrusionAlongPathObjects( "
+                << theNodes            << ", "
+                << theEdges            << ", "
+                << theFaces            << ", "
+                << thePathMesh         << ", "
+                << thePathShape        << ", "
+                << theNodeStart        << ", "
+                << theHasAngles        << ", "
+                << theAngles           << ", "
+                << theLinearVariation  << ", "
+                << theHasRefPoint      << ", "
                 << "SMESH.PointStruct( "
-                << TVar( HasRefPoint ? RefPoint.x : 0 ) << ", "
-                << TVar( HasRefPoint ? RefPoint.y : 0 ) << ", "
-                << TVar( HasRefPoint ? RefPoint.z : 0 ) << " ), "
-                << MakeGroups << ", "
-                << ElemType << " )";
+                << ( theHasRefPoint ? theRefPoint.x : 0 ) << ", "
+                << ( theHasRefPoint ? theRefPoint.y : 0 ) << ", "
+                << ( theHasRefPoint ? theRefPoint.z : 0 ) << " ), "
+                << theMakeGroups       << " )";
   }
-  return aGroups;
+  else
+  {
+    getPreviewMesh()->Remove( SMDSAbs_Volume );
+  }
+
+  return aGroups._retn();
+
+  SMESH_CATCH( SMESH::throwCorbaException );
+  return 0;
 }
 
 //================================================================================
@@ -4008,7 +3352,7 @@ void SMESH_MeshEditor_i::TranslateObject(SMESH::SMESH_IDSource_ptr theObject,
   TIDSortedElemSet elements;
 
   bool emptyIfIsMesh = myIsPreviewMode ? false : true;
-  
+
   if (idSourceToSet(theObject, getMeshDS(), elements, SMDSAbs_All, emptyIfIsMesh))
     translate(elements, theVector, theCopy, false);
 }
@@ -4137,7 +3481,7 @@ SMESH_MeshEditor_i::TranslateObjectMakeMesh(SMESH::SMESH_IDSource_ptr theObject,
 
     TIDSortedElemSet elements;
     if ( mesh_i &&
-      idSourceToSet(theObject, getMeshDS(), elements, SMDSAbs_All, /*emptyIfIsMesh=*/1))
+         idSourceToSet(theObject, getMeshDS(), elements, SMDSAbs_All, /*emptyIfIsMesh=*/1))
     {
       translate(elements, theVector,false, theCopyGroups, & mesh_i->GetImpl());
       mesh_i->CreateGroupServants();
@@ -4464,11 +3808,27 @@ SMESH_MeshEditor_i::scale(SMESH::SMESH_IDSource_ptr  theObject,
     (theScaleFact.length() == 1) ? theScaleFact[0] : theScaleFact[1],
     (theScaleFact.length() == 1) ? theScaleFact[0] : theScaleFact[2],
   };
-  double tol = std::numeric_limits<double>::max();
   gp_Trsf aTrsf;
+
+#if OCC_VERSION_LARGE > 0x06070100
+  // fight against orthogonalization
+  // aTrsf.SetValues( S[0], 0,    0,    thePoint.x * (1-S[0]),
+  //                  0,    S[1], 0,    thePoint.y * (1-S[1]),
+  //                  0,    0,    S[2], thePoint.z * (1-S[2]) );
+  aTrsf.SetScale( gp::Origin(), 1.0 ); // set form which is used to make group names
+  gp_XYZ & loc = ( gp_XYZ& ) aTrsf.TranslationPart();
+  gp_Mat & M   = ( gp_Mat& ) aTrsf.HVectorialPart();
+  loc.SetCoord( thePoint.x * (1-S[0]),
+                thePoint.y * (1-S[1]),
+                thePoint.z * (1-S[2]));
+  M.SetDiagonal( S[0], S[1], S[2] );
+
+#else
+  double tol = std::numeric_limits<double>::max();
   aTrsf.SetValues( S[0], 0,    0,    thePoint.x * (1-S[0]),
                    0,    S[1], 0,    thePoint.y * (1-S[1]),
                    0,    0,    S[2], thePoint.z * (1-S[2]),   tol, tol);
+#endif
 
   TIDSortedElemSet  copyElements;
   TIDSortedElemSet* workElements = &elements;
@@ -4592,25 +3952,24 @@ SMESH_MeshEditor_i::ScaleMakeMesh(SMESH::SMESH_IDSource_ptr  theObject,
 
 
 //=======================================================================
-//function : FindCoincidentNodes
+//function : findCoincidentNodes
 //purpose  :
 //=======================================================================
 
-void SMESH_MeshEditor_i::FindCoincidentNodes (CORBA::Double                  Tolerance,
-                                              SMESH::array_of_long_array_out GroupsOfNodes)
-  throw (SALOME::SALOME_Exception)
+void SMESH_MeshEditor_i::
+findCoincidentNodes (TIDSortedNodeSet &             Nodes,
+                     CORBA::Double                  Tolerance,
+                     SMESH::array_of_long_array_out GroupsOfNodes,
+                     CORBA::Boolean                 SeparateCornersAndMedium)
 {
-  SMESH_TRY;
-  initData();
-
   ::SMESH_MeshEditor::TListOfListOfNodes aListOfListOfNodes;
-  TIDSortedNodeSet nodes; // no input nodes
-  getEditor().FindCoincidentNodes( nodes, Tolerance, aListOfListOfNodes );
+  getEditor().FindCoincidentNodes( Nodes, Tolerance, aListOfListOfNodes, SeparateCornersAndMedium );
 
   GroupsOfNodes = new SMESH::array_of_long_array;
   GroupsOfNodes->length( aListOfListOfNodes.size() );
   ::SMESH_MeshEditor::TListOfListOfNodes::iterator llIt = aListOfListOfNodes.begin();
-  for ( CORBA::Long i = 0; llIt != aListOfListOfNodes.end(); llIt++, i++ ) {
+  for ( CORBA::Long i = 0; llIt != aListOfListOfNodes.end(); llIt++, i++ )
+  {
     list< const SMDS_MeshNode* >& aListOfNodes = *llIt;
     list< const SMDS_MeshNode* >::iterator lIt = aListOfNodes.begin();;
     SMESH::long_array& aGroup = (*GroupsOfNodes)[ i ];
@@ -4618,8 +3977,28 @@ void SMESH_MeshEditor_i::FindCoincidentNodes (CORBA::Double                  Tol
     for ( int j = 0; lIt != aListOfNodes.end(); lIt++, j++ )
       aGroup[ j ] = (*lIt)->GetID();
   }
+}
+
+//=======================================================================
+//function : FindCoincidentNodes
+//purpose  :
+//=======================================================================
+
+void SMESH_MeshEditor_i::
+FindCoincidentNodes (CORBA::Double                  Tolerance,
+                     SMESH::array_of_long_array_out GroupsOfNodes,
+                     CORBA::Boolean                 SeparateCornersAndMedium)
+  throw (SALOME::SALOME_Exception)
+{
+  SMESH_TRY;
+  initData();
+
+  TIDSortedNodeSet nodes; // no input nodes
+  findCoincidentNodes( nodes, Tolerance, GroupsOfNodes, SeparateCornersAndMedium );
+
   TPythonDump() << "coincident_nodes = " << this << ".FindCoincidentNodes( "
-                << Tolerance << " )";
+                << Tolerance << ", "
+                << SeparateCornersAndMedium << " )";
 
   SMESH_CATCH( SMESH::throwCorbaException );
 }
@@ -4629,9 +4008,11 @@ void SMESH_MeshEditor_i::FindCoincidentNodes (CORBA::Double                  Tol
 //purpose  :
 //=======================================================================
 
-void SMESH_MeshEditor_i::FindCoincidentNodesOnPart(SMESH::SMESH_IDSource_ptr      theObject,
-                                                   CORBA::Double                  Tolerance,
-                                                   SMESH::array_of_long_array_out GroupsOfNodes)
+void SMESH_MeshEditor_i::
+FindCoincidentNodesOnPart(SMESH::SMESH_IDSource_ptr      theObject,
+                          CORBA::Double                  Tolerance,
+                          SMESH::array_of_long_array_out GroupsOfNodes,
+                          CORBA::Boolean                 SeparateCornersAndMedium)
   throw (SALOME::SALOME_Exception)
 {
   SMESH_TRY;
@@ -4640,25 +4021,12 @@ void SMESH_MeshEditor_i::FindCoincidentNodesOnPart(SMESH::SMESH_IDSource_ptr
   TIDSortedNodeSet nodes;
   idSourceToNodeSet( theObject, getMeshDS(), nodes );
 
-  ::SMESH_MeshEditor::TListOfListOfNodes aListOfListOfNodes;
-  if(!nodes.empty())
-    getEditor().FindCoincidentNodes( nodes, Tolerance, aListOfListOfNodes );
+  findCoincidentNodes( nodes, Tolerance, GroupsOfNodes, SeparateCornersAndMedium );
 
-  GroupsOfNodes = new SMESH::array_of_long_array;
-  GroupsOfNodes->length( aListOfListOfNodes.size() );
-  ::SMESH_MeshEditor::TListOfListOfNodes::iterator llIt = aListOfListOfNodes.begin();
-  for ( CORBA::Long i = 0; llIt != aListOfListOfNodes.end(); llIt++, i++ )
-  {
-    list< const SMDS_MeshNode* >& aListOfNodes = *llIt;
-    list< const SMDS_MeshNode* >::iterator lIt = aListOfNodes.begin();;
-    SMESH::long_array& aGroup = (*GroupsOfNodes)[ i ];
-    aGroup.length( aListOfNodes.size() );
-    for ( int j = 0; lIt != aListOfNodes.end(); lIt++, j++ )
-      aGroup[ j ] = (*lIt)->GetID();
-  }
   TPythonDump() << "coincident_nodes_on_part = " << this << ".FindCoincidentNodesOnPart( "
-                <<theObject<<", "
-                << Tolerance << " )";
+                << theObject <<", "
+                << Tolerance << ", "
+                << SeparateCornersAndMedium << " )";
 
   SMESH_CATCH( SMESH::throwCorbaException );
 }
@@ -4674,7 +4042,8 @@ void SMESH_MeshEditor_i::
 FindCoincidentNodesOnPartBut(SMESH::SMESH_IDSource_ptr      theObject,
                              CORBA::Double                  theTolerance,
                              SMESH::array_of_long_array_out theGroupsOfNodes,
-                             const SMESH::ListOfIDSources&  theExceptSubMeshOrGroups)
+                             const SMESH::ListOfIDSources&  theExceptSubMeshOrGroups,
+                             CORBA::Boolean                 theSeparateCornersAndMedium)
   throw (SALOME::SALOME_Exception)
 {
   SMESH_TRY;
@@ -4685,32 +4054,18 @@ FindCoincidentNodesOnPartBut(SMESH::SMESH_IDSource_ptr      theObject,
 
   for ( int i = 0; i < theExceptSubMeshOrGroups.length(); ++i )
   {
-    TIDSortedNodeSet exceptNodes;
-    idSourceToNodeSet( theExceptSubMeshOrGroups[i], getMeshDS(), exceptNodes );
-    TIDSortedNodeSet::iterator avoidNode = exceptNodes.begin();
-    for ( ; avoidNode != exceptNodes.end(); ++avoidNode)
-      nodes.erase( *avoidNode );
+    SMDS_ElemIteratorPtr nodeIt = myMesh_i->GetElements( theExceptSubMeshOrGroups[i],
+                                                         SMESH::NODE );
+    while ( nodeIt->more() )
+      nodes.erase( cast2Node( nodeIt->next() ));
   }
-  ::SMESH_MeshEditor::TListOfListOfNodes aListOfListOfNodes;
-  if(!nodes.empty())
-    getEditor().FindCoincidentNodes( nodes, theTolerance, aListOfListOfNodes );
+  findCoincidentNodes( nodes, theTolerance, theGroupsOfNodes, theSeparateCornersAndMedium );
 
-  theGroupsOfNodes = new SMESH::array_of_long_array;
-  theGroupsOfNodes->length( aListOfListOfNodes.size() );
-  ::SMESH_MeshEditor::TListOfListOfNodes::iterator llIt = aListOfListOfNodes.begin();
-  for ( CORBA::Long i = 0; llIt != aListOfListOfNodes.end(); llIt++, i++ )
-  {
-    list< const SMDS_MeshNode* >& aListOfNodes = *llIt;
-    list< const SMDS_MeshNode* >::iterator lIt = aListOfNodes.begin();;
-    SMESH::long_array& aGroup = (*theGroupsOfNodes)[ i ];
-    aGroup.length( aListOfNodes.size() );
-    for ( int j = 0; lIt != aListOfNodes.end(); lIt++, j++ )
-      aGroup[ j ] = (*lIt)->GetID();
-  }
   TPythonDump() << "coincident_nodes_on_part = " << this << ".FindCoincidentNodesOnPartBut( "
                 << theObject<<", "
                 << theTolerance << ", "
-                << theExceptSubMeshOrGroups << " )";
+                << theExceptSubMeshOrGroups << ", "
+                << theSeparateCornersAndMedium << " )";
 
   SMESH_CATCH( SMESH::throwCorbaException );
 }
@@ -4933,7 +4288,7 @@ CORBA::Long SMESH_MeshEditor_i::FindNodeClosestTo(CORBA::Double x,
   theSearchersDeleter.Set( myMesh ); // remove theNodeSearcher if mesh is other
 
   if ( !theNodeSearcher ) {
-    theNodeSearcher = myEditor.GetNodeSearcher();
+    theNodeSearcher = SMESH_MeshAlgos::GetNodeSearcher( *getMeshDS() );
   }
   gp_Pnt p( x,y,z );
   if ( const SMDS_MeshNode* node = theNodeSearcher->FindClosestTo( p ))
@@ -4970,7 +4325,7 @@ CORBA::Long SMESH_MeshEditor_i::MoveClosestNodeToPoint(CORBA::Double x,
   if ( !node ) // preview moving node
   {
     if ( !theNodeSearcher ) {
-      theNodeSearcher = myEditor.GetNodeSearcher();
+      theNodeSearcher = SMESH_MeshAlgos::GetNodeSearcher( *getMeshDS() );
     }
     gp_Pnt p( x,y,z );
     node = theNodeSearcher->FindClosestTo( p );
@@ -5040,7 +4395,7 @@ SMESH::long_array* SMESH_MeshEditor_i::FindElementsByPoint(CORBA::Double      x,
 
   theSearchersDeleter.Set( myMesh );
   if ( !theElementSearcher ) {
-    theElementSearcher = myEditor.GetElementSearcher();
+    theElementSearcher = SMESH_MeshAlgos::GetElementSearcher( *getMeshDS() );
   }
   theElementSearcher->FindElementsByPoint( gp_Pnt( x,y,z ),
                                            SMDSAbs_ElementType( type ),
@@ -5049,13 +4404,6 @@ SMESH::long_array* SMESH_MeshEditor_i::FindElementsByPoint(CORBA::Double      x,
   for ( int i = 0; i < foundElems.size(); ++i )
     res[i] = foundElems[i]->GetID();
 
-  if ( !myIsPreviewMode ) // call from tui
-    TPythonDump() << "res = " << this << ".FindElementsByPoint( "
-                  << x << ", "
-                  << y << ", "
-                  << z << ", "
-                  << type << " )";
-
   return res._retn();
 
   SMESH_CATCH( SMESH::throwCorbaException );
@@ -5105,7 +4453,7 @@ SMESH_MeshEditor_i::FindAmongElementsByPoint(SMESH::SMESH_IDSource_ptr elementID
     typedef SMDS_SetIterator<const SMDS_MeshElement*, TIDSortedElemSet::const_iterator > TIter;
     SMDS_ElemIteratorPtr elemsIt( new TIter( elements.begin(), elements.end() ));
 
-    theElementSearcher = myEditor.GetElementSearcher(elemsIt);
+    theElementSearcher = SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(), elemsIt );
   }
 
   vector< const SMDS_MeshElement* > foundElems;
@@ -5117,14 +4465,6 @@ SMESH_MeshEditor_i::FindAmongElementsByPoint(SMESH::SMESH_IDSource_ptr elementID
   for ( int i = 0; i < foundElems.size(); ++i )
     res[i] = foundElems[i]->GetID();
 
-  if ( !myIsPreviewMode ) // call from tui
-    TPythonDump() << "res = " << this << ".FindAmongElementsByPoint( "
-                  << elementIDs << ", "
-                  << x << ", "
-                  << y << ", "
-                  << z << ", "
-                  << type << " )";
-
   return res._retn();
 
   SMESH_CATCH( SMESH::throwCorbaException );
@@ -5145,7 +4485,7 @@ CORBA::Short SMESH_MeshEditor_i::GetPointState(CORBA::Double x,
   SMESH_TRY;
   theSearchersDeleter.Set( myMesh );
   if ( !theElementSearcher ) {
-    theElementSearcher = myEditor.GetElementSearcher();
+    theElementSearcher = SMESH_MeshAlgos::GetElementSearcher( *getMeshDS() );
   }
   return CORBA::Short( theElementSearcher->GetPointState( gp_Pnt( x,y,z )));
 
@@ -5478,11 +4818,15 @@ void SMESH_MeshEditor_i::convertToQuadratic(CORBA::Boolean            theForce3d
   throw (SALOME::SALOME_Exception)
 {
   SMESH_TRY;
+  initData();
+
   TIDSortedElemSet elems;
   bool elemsOK;
   if ( !( elemsOK = CORBA::is_nil( theObject )))
+  {
     elemsOK =  idSourceToSet( theObject, getMeshDS(), elems,
                               SMDSAbs_All, /*emptyIfIsMesh=*/true );
+  }
   if ( elemsOK )
   {
     if ( !elems.empty() && (*elems.begin())->GetType() == SMDSAbs_Node )
@@ -5505,10 +4849,16 @@ void SMESH_MeshEditor_i::convertToQuadratic(CORBA::Boolean            theForce3d
 CORBA::Boolean SMESH_MeshEditor_i::ConvertFromQuadratic()
   throw (SALOME::SALOME_Exception)
 {
+  SMESH_TRY;
+  initData();
+
   CORBA::Boolean isDone = getEditor().ConvertFromQuadratic();
   TPythonDump() << this << ".ConvertFromQuadratic()";
   declareMeshModified( /*isReComputeSafe=*/!isDone );
   return isDone;
+
+  SMESH_CATCH( SMESH::throwCorbaException );
+  return false;
 }
 
 //=======================================================================
@@ -5561,7 +4911,10 @@ void SMESH_MeshEditor_i::ConvertFromQuadraticObject(SMESH::SMESH_IDSource_ptr th
   throw (SALOME::SALOME_Exception)
 {
   SMESH_TRY;
-    TPythonDump pyDump;
+  initData();
+
+  TPythonDump pyDump;
+
   TIDSortedElemSet elems;
   if ( idSourceToSet( theObject, getMeshDS(), elems, SMDSAbs_All, /*emptyIfIsMesh=*/true ))
   {
@@ -5643,11 +4996,156 @@ string SMESH_MeshEditor_i::generateGroupName(const string& thePrefix)
   int index = 0;
 
   while (!groupNames.insert(name).second)
-    name = SMESH_Comment( thePrefix ) << "_" << index;
+    name = SMESH_Comment( thePrefix ) << "_" << index++;
 
   return name;
 }
 
+//================================================================================
+/*!
+ * \brief Prepare SMESH_IDSource for work
+ */
+//================================================================================
+
+void SMESH_MeshEditor_i::prepareIdSource(SMESH::SMESH_IDSource_ptr theObject)
+{
+  if ( SMESH::Filter_i* filter = SMESH::DownCast<SMESH::Filter_i*>( theObject ))
+  {
+    SMESH::SMESH_Mesh_var mesh = myMesh_i->_this();
+    filter->SetMesh( mesh );
+  }
+}
+//================================================================================
+/*!
+ * \brief Retrieve elements of given type from SMESH_IDSource
+ */
+//================================================================================
+
+bool SMESH_MeshEditor_i::idSourceToSet(SMESH::SMESH_IDSource_ptr  theIDSource,
+                                       const SMESHDS_Mesh*        theMeshDS,
+                                       TIDSortedElemSet&          theElemSet,
+                                       const SMDSAbs_ElementType  theType,
+                                       const bool                 emptyIfIsMesh,
+                                       IDSource_Error*            error)
+
+{
+  if ( error ) *error = IDSource_OK;
+
+  if ( CORBA::is_nil( theIDSource ) )
+  {
+    if ( error ) *error = IDSource_INVALID;
+    return false;
+  }
+  if ( emptyIfIsMesh && SMESH::DownCast<SMESH_Mesh_i*>( theIDSource ))
+  {
+    if ( error && getMeshDS()->GetMeshInfo().NbElements( theType ) == 0 )
+      *error = IDSource_EMPTY;
+    return true;
+  }
+  prepareIdSource( theIDSource );
+  SMESH::long_array_var anIDs = theIDSource->GetIDs();
+  if ( anIDs->length() == 0 )
+  {
+    if ( error ) *error = IDSource_EMPTY;
+    return false;
+  }
+  SMESH::array_of_ElementType_var types = theIDSource->GetTypes();
+  if ( types->length() == 1 && types[0] == SMESH::NODE ) // group of nodes
+  {
+    if ( theType == SMDSAbs_All || theType == SMDSAbs_Node )
+    {
+      arrayToSet( anIDs, getMeshDS(), theElemSet, SMDSAbs_Node );
+    }
+    else
+    {
+      if ( error ) *error = IDSource_INVALID;
+      return false;
+    }
+  }
+  else
+  {
+    arrayToSet( anIDs, getMeshDS(), theElemSet, theType);
+    if ( bool(anIDs->length()) != bool(theElemSet.size()))
+    {
+      if ( error ) *error = IDSource_INVALID;
+      return false;
+    }
+  }
+  return true;
+}
+
+//================================================================================
+/*!
+ * \brief Duplicates given elements, i.e. creates new elements based on the
+ *        same nodes as the given ones.
+ * \param theElements - container of elements to duplicate.
+ * \param theGroupName - a name of group to contain the generated elements.
+ *                    If a group with such a name already exists, the new elements
+ *                    are added to the existng group, else a new group is created.
+ *                    If \a theGroupName is empty, new elements are not added 
+ *                    in any group.
+ * \return a group where the new elements are added. NULL if theGroupName == "".
+ * \sa DoubleNode()
+ */
+//================================================================================
+
+SMESH::SMESH_Group_ptr
+SMESH_MeshEditor_i::DoubleElements(SMESH::SMESH_IDSource_ptr theElements,
+                                   const char*               theGroupName)
+  throw (SALOME::SALOME_Exception)
+{
+  SMESH::SMESH_Group_var newGroup;
+
+  SMESH_TRY;
+  initData();
+
+  TPythonDump pyDump;
+
+  TIDSortedElemSet elems;
+  if ( idSourceToSet( theElements, getMeshDS(), elems, SMDSAbs_All, /*emptyIfIsMesh=*/true))
+  {
+    getEditor().DoubleElements( elems );
+
+    if ( strlen( theGroupName ) && !getEditor().GetLastCreatedElems().IsEmpty() )
+    {
+      // group type
+      SMESH::ElementType type =
+        SMESH::ElementType( getEditor().GetLastCreatedElems().Value(1)->GetType() );
+      // find existing group
+      SMESH::ListOfGroups_var groups = myMesh_i->GetGroups();
+      for ( size_t i = 0; i < groups->length(); ++i )
+        if ( groups[i]->GetType() == type )
+        {
+          CORBA::String_var name = groups[i]->GetName();
+          if ( strcmp( name, theGroupName ) == 0 ) {
+            newGroup = SMESH::SMESH_Group::_narrow( groups[i] );
+            break;
+          }
+        }
+      // create a new group
+      if ( newGroup->_is_nil() )
+        newGroup = myMesh_i->CreateGroup( type, theGroupName );
+      // fill newGroup
+      if ( SMESH_Group_i* group_i = SMESH::DownCast< SMESH_Group_i* >( newGroup ))
+      {
+        SMESHDS_Group* groupDS = static_cast< SMESHDS_Group* >( group_i->GetGroupDS() );
+        const SMESH_SequenceOfElemPtr& aSeq = getEditor().GetLastCreatedElems();
+        for ( int i = 1; i <= aSeq.Length(); i++ )
+          groupDS->SMDSGroup().Add( aSeq(i) );
+      }
+    }
+  }
+  // python dump
+  if ( !newGroup->_is_nil() )
+    pyDump << newGroup << " = ";
+  pyDump << this << ".DoubleElements( "
+         << theElements << ", " << "'" << theGroupName <<"')";
+
+  SMESH_CATCH( SMESH::throwCorbaException );
+
+  return newGroup._retn();
+}
+
 //================================================================================
 /*!
   \brief Creates a hole in a mesh by doubling the nodes of some particular elements
@@ -6580,33 +6078,45 @@ CORBA::Boolean SMESH_MeshEditor_i::Make2DMeshFrom3D()
 
 //================================================================================
 /*!
- * \brief Double nodes on shared faces between groups of volumes and create flat
- *        elements on demand.
- * The list of groups must describe a partition of the mesh volumes.
+ * \brief Double nodes on shared faces between groups of volumes and create flat elements on demand.
+ * The list of groups must contain at least two groups. The groups have to be disjoint:
+ * no common element into two different groups.
  * The nodes of the internal faces at the boundaries of the groups are doubled.
- * In option, the internal faces are replaced by flat elements.
- * Triangles are transformed in prisms, and quadrangles in hexahedrons.
+ * Optionally, the internal faces are replaced by flat elements.
+ * Triangles are transformed into prisms, and quadrangles into hexahedrons.
  * The flat elements are stored in groups of volumes.
- * @param theDomains - list of groups of volumes
- * @param createJointElems - if TRUE, create the elements
- * @return TRUE if operation has been completed successfully, FALSE otherwise
+ * These groups are named according to the position of the group in the list:
+ * the group j_n_p is the group of the flat elements that are built between the group #n and the group #p in the list.
+ * If there is no shared faces between the group #n and the group #p in the list, the group j_n_p is not created.
+ * All the flat elements are gathered into the group named "joints3D" (or "joints2D" in 2D situation).
+ * The flat element of the multiple junctions between the simple junction are stored in a group named "jointsMultiples".
+ * \param theDomains - list of groups of volumes
+ * \param createJointElems - if TRUE, create the elements
+ * \param onAllBoundaries - if TRUE, the nodes and elements are also created on
+ *        the boundary between \a theDomains and the rest mesh
+ * \return TRUE if operation has been completed successfully, FALSE otherwise
  */
 //================================================================================
 
 CORBA::Boolean
 SMESH_MeshEditor_i::DoubleNodesOnGroupBoundaries( const SMESH::ListOfGroups& theDomains,
-                                                  CORBA::Boolean             createJointElems )
+                                                  CORBA::Boolean             createJointElems,
+                                                  CORBA::Boolean             onAllBoundaries )
   throw (SALOME::SALOME_Exception)
 {
-  bool aResult = false;
+  bool isOK = false;
 
   SMESH_TRY;
   initData();
 
   SMESHDS_Mesh* aMeshDS = getMeshDS();
 
+  // MESSAGE("theDomains.length = "<<theDomains.length());
+  if ( theDomains.length() <= 1 && !onAllBoundaries )
+    THROW_SALOME_CORBA_EXCEPTION("At least 2 groups are required.", SALOME::BAD_PARAM);
+
   vector<TIDSortedElemSet> domains;
-  domains.clear();
+  domains.resize( theDomains.length() );
 
   for ( int i = 0, n = theDomains.length(); i < n; i++ )
   {
@@ -6615,26 +6125,25 @@ SMESH_MeshEditor_i::DoubleNodesOnGroupBoundaries( const SMESH::ListOfGroups& the
     {
 //      if ( aGrp->GetType() != SMESH::VOLUME )
 //        THROW_SALOME_CORBA_EXCEPTION("Not a volume group", SALOME::BAD_PARAM);
-      TIDSortedElemSet domain;
-      domain.clear();
-      domains.push_back(domain);
       SMESH::long_array_var anIDs = aGrp->GetIDs();
       arrayToSet( anIDs, aMeshDS, domains[ i ], SMDSAbs_All );
     }
   }
 
-  aResult = getEditor().DoubleNodesOnGroupBoundaries( domains, createJointElems );
+  isOK = getEditor().DoubleNodesOnGroupBoundaries( domains, createJointElems, onAllBoundaries );
   // TODO publish the groups of flat elements in study
 
-  declareMeshModified( /*isReComputeSafe=*/ !aResult );
+  declareMeshModified( /*isReComputeSafe=*/ !isOK );
 
   // Update Python script
   TPythonDump() << "isDone = " << this << ".DoubleNodesOnGroupBoundaries( " << &theDomains
-      << ", " << createJointElems << " )";
+                << ", " << createJointElems << ", " << onAllBoundaries << " )";
 
   SMESH_CATCH( SMESH::throwCorbaException );
 
-  return aResult;
+  myMesh_i->CreateGroupServants(); // publish created groups if any
+
+  return isOK;
 }
 
 //================================================================================
@@ -6714,7 +6223,7 @@ void SMESH_MeshEditor_i::CreateHoleSkin(CORBA::Double                  radius,
 
   theSearchersDeleter.Set( myMesh ); // remove theNodeSearcher if mesh is other
   if ( !theNodeSearcher )
-    theNodeSearcher = aMeshEditor.GetNodeSearcher();
+    theNodeSearcher = SMESH_MeshAlgos::GetNodeSearcher( *getMeshDS() );
 
   vector<double> nodesCoords;
   for (int i = 0; i < theNodesCoords.length(); i++)