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merge from branch BR_SMDS_MEMIMP 29 nov 2010
[modules/smesh.git] / src / SMESH_I / SMESH_MeshEditor_i.cxx
index d7396e58d8aadba7d98b438d7f6635568f65c7ff..d6185e1078a877d377fd1eafbf3e1d0abd4de411 100644 (file)
@@ -1,4 +1,4 @@
-//  Copyright (C) 2007-2008  CEA/DEN, EDF R&D, OPEN CASCADE
+//  Copyright (C) 2007-2010  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
 //
 //  See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
+
 //  SMESH SMESH_I : idl implementation based on 'SMESH' unit's calsses
 //  File   : SMESH_MeshEditor_i.cxx
 //  Author : Nicolas REJNERI
 //  Module : SMESH
+//
+#ifdef WNT
+#define NOMINMAX
+#endif
 
 #include "SMESH_MeshEditor_i.hxx"
 
 #include "SMDS_Mesh0DElement.hxx"
-#include "SMDS_MeshEdge.hxx"
+#include "SMDS_LinearEdge.hxx"
 #include "SMDS_MeshFace.hxx"
 #include "SMDS_MeshVolume.hxx"
 #include "SMDS_PolyhedralVolumeOfNodes.hxx"
-#include "SMESH_MeshEditor.hxx"
 #include "SMESH_subMeshEventListener.hxx"
 #include "SMESH_Gen_i.hxx"
 #include "SMESH_Filter_i.hxx"
 #include "SMESH_subMesh_i.hxx"
 #include "SMESH_Group_i.hxx"
 #include "SMESH_PythonDump.hxx"
+#include "SMESH_ControlsDef.hxx"
 
 #include "utilities.h"
 #include "Utils_ExceptHandlers.hxx"
@@ -64,6 +69,7 @@
 #endif
 
 #include <sstream>
+#include <limits>
 
 #define cast2Node(elem) static_cast<const SMDS_MeshNode*>( elem )
 
@@ -128,11 +134,11 @@ namespace {
       SMDS_MeshElement* anElemCopy = 0;
       if ( anElem->IsPoly() && anElem->GetType() == SMDSAbs_Volume )
       {
-        const SMDS_PolyhedralVolumeOfNodes* ph =
-          dynamic_cast<const SMDS_PolyhedralVolumeOfNodes*> (anElem);
+        const SMDS_VtkVolume* ph =
+          dynamic_cast<const SMDS_VtkVolume*> (anElem);
         if ( ph )
           anElemCopy = _myMeshDS->AddPolyhedralVolumeWithID
-            (anElemNodesID, ph->GetQuanities(),anElem->GetID());
+            (anElemNodesID, ph->GetQuantities(),anElem->GetID());
       }
       else {
         anElemCopy = ::SMESH_MeshEditor(this).AddElement( anElemNodesID,
@@ -163,7 +169,7 @@ namespace {
     SMESH_Mesh* myMesh;
     //!< Constructor
     TSearchersDeleter(): SMESH_subMeshEventListener( false ), // won't be deleted by submesh
-    myMesh(0) {}
+                         myMesh(0) {}
     //!< Delete theNodeSearcher
     static void Delete()
     {
@@ -227,6 +233,91 @@ namespace {
     }
     return typeStr;
   }
+  //================================================================================
+  /*!
+   * \brief function for conversion long_array to TIDSortedElemSet
+   * \param IDs - array of IDs
+   * \param aMesh - mesh
+   * \param aMap - collection to fill
+   * \param aType - element type
+   */
+  //================================================================================
+
+  void arrayToSet(const SMESH::long_array & IDs,
+                  const SMESHDS_Mesh*       aMesh,
+                  TIDSortedElemSet&         aMap,
+                  const SMDSAbs_ElementType aType = SMDSAbs_All )
+  {
+    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( 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)
+
+  {
+    if ( CORBA::is_nil( theIDSource ) )
+      return false;
+    if ( emptyIfIsMesh && SMESH::DownCast<SMESH_Mesh_i*>( theIDSource ))
+      return true;
+
+    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;
+    }
+    else
+    {
+      arrayToSet( anIDs, theMeshDS, theElemSet, theType);
+    }
+    return true;
+  }
+  //================================================================================
+  /*!
+   * \brief Retrieve nodes from SMESH_IDSource
+   */
+  //================================================================================
+
+  void idSourceToNodeSet(SMESH::SMESH_IDSource_ptr  theObject,
+                         const SMESHDS_Mesh*        theMeshDS,
+                         TIDSortedNodeSet&          theNodeSet)
+
+  {
+    if ( CORBA::is_nil( theObject ) )
+      return;
+    SMESH::array_of_ElementType_var types = theObject->GetTypes();
+    SMESH::long_array_var     aElementsId = theObject->GetIDs();
+    if ( types->length() == 1 && types[0] == SMESH::NODE)
+    {
+      for(int i = 0; i < aElementsId->length(); i++)
+        if ( const SMDS_MeshNode * n = theMeshDS->FindNode( aElementsId[i] ))
+          theNodeSet.insert( theNodeSet.end(), n);
+    }
+    else {
+      for(int i = 0; i < aElementsId->length(); i++)
+        if( const SMDS_MeshElement * elem = theMeshDS->FindElement( aElementsId[i] ))
+          theNodeSet.insert( elem->begin_nodes(), elem->end_nodes());
+    }
+  }
 }
 
 //=============================================================================
@@ -271,6 +362,40 @@ void SMESH_MeshEditor_i::initData(bool deleteSearchers)
   }
 }
 
+//=======================================================================
+//function : MakeIDSource
+//purpose  : Wrap a sequence of ids in a SMESH_IDSource
+//=======================================================================
+
+struct _IDSource : public POA_SMESH::SMESH_IDSource
+{
+  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::SMESH_Mesh_ptr GetMesh()  { return SMESH::SMESH_Mesh::_duplicate( _mesh ); }
+  SMESH::array_of_ElementType* GetTypes()
+  {
+    SMESH::array_of_ElementType_var types = new SMESH::array_of_ElementType;
+    types->length( 1 );
+    types[0] = _type;
+    return types._retn();
+  }
+};
+
+SMESH::SMESH_IDSource_ptr SMESH_MeshEditor_i::MakeIDSource(const SMESH::long_array& ids,
+                                                           SMESH::ElementType       type)
+{
+  _IDSource* anIDSource = new _IDSource;
+  anIDSource->_ids = ids;
+  anIDSource->_type = type;
+  anIDSource->_mesh = myMesh_i->_this();
+  SMESH::SMESH_IDSource_var anIDSourceVar = anIDSource->_this();
+
+  return anIDSourceVar._retn();
+}
+
 //=============================================================================
 /*!
  *
@@ -278,7 +403,7 @@ void SMESH_MeshEditor_i::initData(bool deleteSearchers)
 //=============================================================================
 
 CORBA::Boolean
-  SMESH_MeshEditor_i::RemoveElements(const SMESH::long_array & IDsOfElements)
+SMESH_MeshEditor_i::RemoveElements(const SMESH::long_array & IDsOfElements)
 {
   initData();
 
@@ -290,11 +415,13 @@ CORBA::Boolean
 
   // Update Python script
   TPythonDump() << "isDone = " << this << ".RemoveElements( " << IDsOfElements << " )";
-#ifdef _DEBUG_
-  TPythonDump() << "print 'RemoveElements: ', isDone";
-#endif
+
   // Remove Elements
-  return anEditor.Remove( IdList, false );
+  bool ret = anEditor.Remove( IdList, false );
+  myMesh->GetMeshDS()->Modified();
+  if ( IDsOfElements.length() )
+    myMesh->SetIsModified( true ); // issue 0020693
+  return ret;
 }
 
 //=============================================================================
@@ -314,9 +441,41 @@ CORBA::Boolean SMESH_MeshEditor_i::RemoveNodes(const SMESH::long_array & IDsOfNo
 
   // Update Python script
   TPythonDump() << "isDone = " << this << ".RemoveNodes( " << IDsOfNodes << " )";
-#ifdef _DEBUG_
-  TPythonDump() << "print 'RemoveNodes: ', isDone";
-#endif
+
+  bool ret = anEditor.Remove( IdList, true );
+  myMesh->GetMeshDS()->Modified();
+  if ( IDsOfNodes.length() )
+    myMesh->SetIsModified( true ); // issue 0020693
+  return ret;
+}
+
+//=============================================================================
+/*!
+ *
+ */
+//=============================================================================
+
+CORBA::Long SMESH_MeshEditor_i::RemoveOrphanNodes()
+{
+  initData();
+
+  ::SMESH_MeshEditor anEditor( myMesh );
+
+  // Update Python script
+  TPythonDump() << "nbRemoved = " << this << ".RemoveOrphanNodes()";
+
+  // Create filter to find all orphan nodes
+  SMESH::Controls::Filter::TIdSequence seq;
+  SMESH::Controls::PredicatePtr predicate( new SMESH::Controls::FreeNodes() );
+  SMESH::Controls::Filter::GetElementsId( GetMeshDS(), predicate, seq );
+
+  // remove orphan nodes (if there are any)
+  list< int > IdList;
+  for ( int i = 0; i < seq.size(); i++ )
+    IdList.push_back( seq[i] );
+
+  if ( IdList.size() )
+    myMesh->SetIsModified( true );
 
   return anEditor.Remove( IdList, true );
 }
@@ -338,6 +497,8 @@ CORBA::Long SMESH_MeshEditor_i::AddNode(CORBA::Double x,
   TPythonDump() << "nodeID = " << this << ".AddNode( "
                 << x << ", " << y << ", " << z << " )";
 
+  myMesh->GetMeshDS()->Modified();
+  myMesh->SetIsModified( true ); // issue 0020693
   return N->GetID();
 }
 
@@ -356,6 +517,9 @@ CORBA::Long SMESH_MeshEditor_i::Add0DElement(CORBA::Long IDOfNode)
   // Update Python script
   TPythonDump() << "elem0d = " << this << ".Add0DElement( " << IDOfNode <<" )";
 
+  myMesh->GetMeshDS()->Modified();
+  myMesh->SetIsModified( true ); // issue 0020693
+
   if (elem)
     return elem->GetID();
 
@@ -396,8 +560,9 @@ CORBA::Long SMESH_MeshEditor_i::AddEdge(const SMESH::long_array & IDsOfNodes)
                   <<n1<<", "<<n2<<", "<<n12<<" ])";
   }
 
+  myMesh->GetMeshDS()->Modified();
   if(elem)
-    return elem->GetID();
+    return myMesh->SetIsModified( true ), elem->GetID();
 
   return 0;
 }
@@ -444,8 +609,9 @@ CORBA::Long SMESH_MeshEditor_i::AddFace(const SMESH::long_array & IDsOfNodes)
   // Update Python script
   TPythonDump() << "faceID = " << this << ".AddFace( " << IDsOfNodes << " )";
 
+  myMesh->GetMeshDS()->Modified();
   if(elem)
-    return elem->GetID();
+    return myMesh->SetIsModified( true ), elem->GetID();
 
   return 0;
 }
@@ -455,8 +621,7 @@ CORBA::Long SMESH_MeshEditor_i::AddFace(const SMESH::long_array & IDsOfNodes)
  *  AddPolygonalFace
  */
 //=============================================================================
-CORBA::Long SMESH_MeshEditor_i::AddPolygonalFace
-                                   (const SMESH::long_array & IDsOfNodes)
+CORBA::Long SMESH_MeshEditor_i::AddPolygonalFace (const SMESH::long_array & IDsOfNodes)
 {
   initData();
 
@@ -466,17 +631,12 @@ CORBA::Long SMESH_MeshEditor_i::AddPolygonalFace
     nodes[i] = GetMeshDS()->FindNode(IDsOfNodes[i]);
 
   const SMDS_MeshElement* elem = GetMeshDS()->AddPolygonalFace(nodes);
-  
+
   // Update Python script
   TPythonDump() <<"faceID = "<<this<<".AddPolygonalFace( "<<IDsOfNodes<<" )";
-#ifdef _DEBUG_
-  TPythonDump() << "print 'AddPolygonalFace: ', faceID";
-#endif
 
-  if(elem)
-    return elem->GetID();
-
-  return 0;
+  myMesh->GetMeshDS()->Modified();
+  return elem ? ( myMesh->SetIsModified( true ), elem->GetID()) : 0;
 }
 
 //=============================================================================
@@ -518,12 +678,10 @@ CORBA::Long SMESH_MeshEditor_i::AddVolume(const SMESH::long_array & IDsOfNodes)
 
   // Update Python script
   TPythonDump() << "volID = " << this << ".AddVolume( " << IDsOfNodes << " )";
-#ifdef _DEBUG_
-  TPythonDump() << "print 'AddVolume: ', volID";
-#endif
 
+  myMesh->GetMeshDS()->Modified();
   if(elem)
-    return elem->GetID();
+    return myMesh->SetIsModified( true ), elem->GetID();
 
   return 0;
 }
@@ -533,16 +691,19 @@ CORBA::Long SMESH_MeshEditor_i::AddVolume(const SMESH::long_array & IDsOfNodes)
  *  AddPolyhedralVolume
  */
 //=============================================================================
-CORBA::Long SMESH_MeshEditor_i::AddPolyhedralVolume
-                                   (const SMESH::long_array & IDsOfNodes,
-                                    const SMESH::long_array & Quantities)
+CORBA::Long SMESH_MeshEditor_i::AddPolyhedralVolume (const SMESH::long_array & IDsOfNodes,
+                                                     const SMESH::long_array & Quantities)
 {
   initData();
 
   int NbNodes = IDsOfNodes.length();
   std::vector<const SMDS_MeshNode*> n (NbNodes);
   for (int i = 0; i < NbNodes; i++)
-    n[i] = GetMeshDS()->FindNode(IDsOfNodes[i]);
+    {
+      const SMDS_MeshNode* aNode = GetMeshDS()->FindNode(IDsOfNodes[i]);
+      if (!aNode) return 0;
+      n[i] = aNode;
+    }
 
   int NbFaces = Quantities.length();
   std::vector<int> q (NbFaces);
@@ -554,14 +715,9 @@ CORBA::Long SMESH_MeshEditor_i::AddPolyhedralVolume
   // Update Python script
   TPythonDump() << "volID = " << this << ".AddPolyhedralVolume( "
                 << IDsOfNodes << ", " << Quantities << " )";
-#ifdef _DEBUG_
-  TPythonDump() << "print 'AddPolyhedralVolume: ', volID";
-#endif
-
-  if(elem)
-    return elem->GetID();
+  myMesh->GetMeshDS()->Modified();
 
-  return 0;
+  return elem ? ( myMesh->SetIsModified( true ), elem->GetID()) : 0;
 }
 
 //=============================================================================
@@ -569,8 +725,7 @@ CORBA::Long SMESH_MeshEditor_i::AddPolyhedralVolume
  *  AddPolyhedralVolumeByFaces
  */
 //=============================================================================
-CORBA::Long SMESH_MeshEditor_i::AddPolyhedralVolumeByFaces
-                                   (const SMESH::long_array & IdsOfFaces)
+CORBA::Long SMESH_MeshEditor_i::AddPolyhedralVolumeByFaces (const SMESH::long_array & IdsOfFaces)
 {
   initData();
 
@@ -593,14 +748,9 @@ CORBA::Long SMESH_MeshEditor_i::AddPolyhedralVolumeByFaces
   // Update Python script
   TPythonDump() << "volID = " << this << ".AddPolyhedralVolumeByFaces( "
                 << IdsOfFaces << " )";
-#ifdef _DEBUG_
-  TPythonDump() << "print 'AddPolyhedralVolume: ', volID";
-#endif
-
-  if(elem)
-    return elem->GetID();
+  myMesh->GetMeshDS()->Modified();
 
-  return 0;
+  return elem ? ( myMesh->SetIsModified( true ), elem->GetID()) : 0;
 }
 
 //=============================================================================
@@ -630,6 +780,8 @@ void SMESH_MeshEditor_i::SetNodeOnVertex(CORBA::Long NodeID, CORBA::Long VertexI
     THROW_SALOME_CORBA_EXCEPTION("Invalid VertexID", SALOME::BAD_PARAM);
 
   mesh->SetNodeOnVertex( node, VertexID );
+
+  myMesh->SetIsModified( true );
 }
 
 //=============================================================================
@@ -666,6 +818,8 @@ void SMESH_MeshEditor_i::SetNodeOnEdge(CORBA::Long NodeID, CORBA::Long EdgeID,
     THROW_SALOME_CORBA_EXCEPTION("Invalid paramOnEdge", SALOME::BAD_PARAM);
 
   mesh->SetNodeOnEdge( node, EdgeID, paramOnEdge );
+
+  myMesh->SetIsModified( true );
 }
 
 //=============================================================================
@@ -706,15 +860,16 @@ void SMESH_MeshEditor_i::SetNodeOnFace(CORBA::Long NodeID, CORBA::Long FaceID,
   if ( isOut ) {
 #ifdef _DEBUG_
     MESSAGE ( "FACE " << FaceID << " (" << u << "," << v << ") out of "
-           << " u( " <<  surf.FirstUParameter() 
-           << "," <<  surf.LastUParameter()  
-           << ") v( " <<  surf.FirstVParameter() 
-           << "," <<  surf.LastVParameter() << ")" );
+              << " u( " <<  surf.FirstUParameter() 
+              << "," <<  surf.LastUParameter()  
+              << ") v( " <<  surf.FirstVParameter() 
+              << "," <<  surf.LastVParameter() << ")" );
 #endif    
     THROW_SALOME_CORBA_EXCEPTION("Invalid UV", SALOME::BAD_PARAM);
   }
 
   mesh->SetNodeOnFace( node, FaceID, u, v );
+  myMesh->SetIsModified( true );
 }
 
 //=============================================================================
@@ -745,6 +900,8 @@ void SMESH_MeshEditor_i::SetNodeInVolume(CORBA::Long NodeID, CORBA::Long SolidID
     THROW_SALOME_CORBA_EXCEPTION("Invalid SolidID", SALOME::BAD_PARAM);
 
   mesh->SetNodeInVolume( node, SolidID );
+
+  // myMesh->SetIsModified( true ); - SetNodeInVolume() can't prevent re-compute, I believe
 }
 
 //=============================================================================
@@ -778,6 +935,8 @@ void SMESH_MeshEditor_i::SetMeshElementOnShape(CORBA::Long ElementID,
     THROW_SALOME_CORBA_EXCEPTION("Invalid shape type", SALOME::BAD_PARAM);
 
   mesh->SetMeshElementOnShape( elem, ShapeID );
+
+  myMesh->SetIsModified( true );
 }
 
 //=============================================================================
@@ -800,8 +959,12 @@ CORBA::Boolean SMESH_MeshEditor_i::InverseDiag(CORBA::Long NodeID1,
   TPythonDump() << "isDone = " << this << ".InverseDiag( "
                 << NodeID1 << ", " << NodeID2 << " )";
 
+
   ::SMESH_MeshEditor aMeshEditor( myMesh );
-  return aMeshEditor.InverseDiag ( n1, n2 );
+  int ret =  aMeshEditor.InverseDiag ( n1, n2 );
+  myMesh->GetMeshDS()->Modified();
+  myMesh->SetIsModified( true );
+  return ret;
 }
 
 //=============================================================================
@@ -828,6 +991,10 @@ CORBA::Boolean SMESH_MeshEditor_i::DeleteDiag(CORBA::Long NodeID1,
 
   bool stat = aMeshEditor.DeleteDiag ( n1, n2 );
 
+  myMesh->GetMeshDS()->Modified();
+  if ( stat )
+    myMesh->SetIsModified( true ); // issue 0020693
+    
   storeResult(aMeshEditor);
 
   return stat;
@@ -854,6 +1021,10 @@ CORBA::Boolean SMESH_MeshEditor_i::Reorient(const SMESH::long_array & IDsOfEleme
   // Update Python script
   TPythonDump() << "isDone = " << this << ".Reorient( " << IDsOfElements << " )";
 
+  myMesh->GetMeshDS()->Modified();
+  if ( IDsOfElements.length() )
+    myMesh->SetIsModified( true ); // issue 0020693
+
   return true;
 }
 
@@ -868,47 +1039,17 @@ CORBA::Boolean SMESH_MeshEditor_i::ReorientObject(SMESH::SMESH_IDSource_ptr theO
 {
   initData();
 
+  TPythonDump aTPythonDump; // suppress dump in Reorient()
+
   SMESH::long_array_var anElementsId = theObject->GetIDs();
   CORBA::Boolean isDone = Reorient(anElementsId);
 
-  // Clear python line, created by Reorient()
-  SMESH_Gen_i* aSMESHGen = SMESH_Gen_i::GetSMESHGen();
-  aSMESHGen->RemoveLastFromPythonScript(aSMESHGen->GetCurrentStudyID());
-
   // Update Python script
-  TPythonDump() << "isDone = " << this << ".ReorientObject( " << theObject << " )";
+  aTPythonDump << "isDone = " << this << ".ReorientObject( " << theObject << " )";
 
   return isDone;
 }
 
-namespace
-{
-  //================================================================================
-  /*!
-   * \brief function for conversion long_array to TIDSortedElemSet
-    * \param IDs - array of IDs
-    * \param aMesh - mesh
-    * \param aMap - collection to fill
-    * \param aType - element type
-   */
-  //================================================================================
-
-  void arrayToSet(const SMESH::long_array & IDs,
-                  const SMESHDS_Mesh*       aMesh,
-                  TIDSortedElemSet&         aMap,
-                  const SMDSAbs_ElementType aType = SMDSAbs_All )
-  { 
-    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( elem );
-    }
-  }
-}
-
 //=============================================================================
 /*!
  *
@@ -935,13 +1076,13 @@ CORBA::Boolean SMESH_MeshEditor_i::TriToQuad (const SMESH::long_array &   IDsOfE
   // Update Python script
   TPythonDump() << "isDone = " << this << ".TriToQuad( "
                 << IDsOfElements << ", " << aNumericalFunctor << ", " << MaxAngle << " )";
-#ifdef _DEBUG_
-  TPythonDump() << "print 'TriToQuad: ', isDone";
-#endif
 
   ::SMESH_MeshEditor anEditor( myMesh );
 
   bool stat = anEditor.TriToQuad( faces, aCrit, MaxAngle );
+  myMesh->GetMeshDS()->Modified();
+  if ( stat )
+    myMesh->SetIsModified( true ); // issue 0020693
 
   storeResult(anEditor);
 
@@ -960,25 +1101,16 @@ CORBA::Boolean SMESH_MeshEditor_i::TriToQuadObject (SMESH::SMESH_IDSource_ptr
 {
   initData();
 
+  TPythonDump aTPythonDump;  // suppress dump in TriToQuad()
   SMESH::long_array_var anElementsId = theObject->GetIDs();
   CORBA::Boolean isDone = TriToQuad(anElementsId, Criterion, MaxAngle);
 
-  // Clear python line(s), created by TriToQuad()
-  SMESH_Gen_i* aSMESHGen = SMESH_Gen_i::GetSMESHGen();
-  aSMESHGen->RemoveLastFromPythonScript(aSMESHGen->GetCurrentStudyID());
-#ifdef _DEBUG_
-  aSMESHGen->RemoveLastFromPythonScript(aSMESHGen->GetCurrentStudyID());
-#endif
-
   SMESH::NumericalFunctor_i* aNumericalFunctor =
     SMESH::DownCast<SMESH::NumericalFunctor_i*>( Criterion );
 
   // Update Python script
-  TPythonDump() << "isDone = " << this << ".TriToQuadObject("
-                << theObject << ", " << aNumericalFunctor << ", " << MaxAngle << " )";
-#ifdef _DEBUG_
-  TPythonDump() << "print 'TriToQuadObject: ', isDone";
-#endif
+  aTPythonDump << "isDone = " << this << ".TriToQuadObject("
+               << theObject << ", " << aNumericalFunctor << ", " << MaxAngle << " )";
 
   return isDone;
 }
@@ -1009,12 +1141,12 @@ CORBA::Boolean SMESH_MeshEditor_i::QuadToTri (const SMESH::long_array &   IDsOfE
 
   // Update Python script
   TPythonDump() << "isDone = " << this << ".QuadToTri( " << IDsOfElements << ", " << aNumericalFunctor << " )";
-#ifdef _DEBUG_
-  TPythonDump() << "print 'QuadToTri: ', isDone";
-#endif
 
   ::SMESH_MeshEditor anEditor( myMesh );
   CORBA::Boolean stat = anEditor.QuadToTri( faces, aCrit );
+  myMesh->GetMeshDS()->Modified();
+  if ( stat )
+    myMesh->SetIsModified( true ); // issue 0020693
 
   storeResult(anEditor);
 
@@ -1032,24 +1164,16 @@ CORBA::Boolean SMESH_MeshEditor_i::QuadToTriObject (SMESH::SMESH_IDSource_ptr
 {
   initData();
 
+  TPythonDump aTPythonDump;  // suppress dump in QuadToTri()
+
   SMESH::long_array_var anElementsId = theObject->GetIDs();
   CORBA::Boolean isDone = QuadToTri(anElementsId, Criterion);
 
-  // Clear python line(s), created by QuadToTri()
-  SMESH_Gen_i* aSMESHGen = SMESH_Gen_i::GetSMESHGen();
-  aSMESHGen->RemoveLastFromPythonScript(aSMESHGen->GetCurrentStudyID());
-#ifdef _DEBUG_
-  aSMESHGen->RemoveLastFromPythonScript(aSMESHGen->GetCurrentStudyID());
-#endif
-
   SMESH::NumericalFunctor_i* aNumericalFunctor =
     SMESH::DownCast<SMESH::NumericalFunctor_i*>( Criterion );
 
   // Update Python script
-  TPythonDump() << "isDone = " << this << ".QuadToTriObject( " << theObject << ", " << aNumericalFunctor << " )";
-#ifdef _DEBUG_
-  TPythonDump() << "print 'QuadToTriObject: ', isDone";
-#endif
+  aTPythonDump << "isDone = " << this << ".QuadToTriObject( " << theObject << ", " << aNumericalFunctor << " )";
 
   return isDone;
 }
@@ -1072,12 +1196,13 @@ CORBA::Boolean SMESH_MeshEditor_i::SplitQuad (const SMESH::long_array & IDsOfEle
   // Update Python script
   TPythonDump() << "isDone = " << this << ".SplitQuad( "
                 << IDsOfElements << ", " << Diag13 << " )";
-#ifdef _DEBUG_
-  TPythonDump() << "print 'SplitQuad: ', isDone";
-#endif
 
   ::SMESH_MeshEditor anEditor( myMesh );
   CORBA::Boolean stat = anEditor.QuadToTri( faces, Diag13 );
+  myMesh->GetMeshDS()->Modified();
+  if ( stat )
+    myMesh->SetIsModified( true ); // issue 0020693
+
 
   storeResult(anEditor);
 
@@ -1095,22 +1220,14 @@ CORBA::Boolean SMESH_MeshEditor_i::SplitQuadObject (SMESH::SMESH_IDSource_ptr th
 {
   initData();
 
+  TPythonDump aTPythonDump;  // suppress dump in SplitQuad()
+
   SMESH::long_array_var anElementsId = theObject->GetIDs();
   CORBA::Boolean isDone = SplitQuad(anElementsId, Diag13);
 
-  // Clear python line(s), created by SplitQuad()
-  SMESH_Gen_i* aSMESHGen = SMESH_Gen_i::GetSMESHGen();
-  aSMESHGen->RemoveLastFromPythonScript(aSMESHGen->GetCurrentStudyID());
-#ifdef _DEBUG_
-  aSMESHGen->RemoveLastFromPythonScript(aSMESHGen->GetCurrentStudyID());
-#endif
-
   // Update Python script
-  TPythonDump() << "isDone = " << this << ".SplitQuadObject( "
-                << theObject << ", " << Diag13 << " )";
-#ifdef _DEBUG_
-  TPythonDump() << "print 'SplitQuadObject: ', isDone";
-#endif
+  aTPythonDump << "isDone = " << this << ".SplitQuadObject( "
+               << theObject << ", " << Diag13 << " )";
 
   return isDone;
 }
@@ -1124,6 +1241,8 @@ CORBA::Boolean SMESH_MeshEditor_i::SplitQuadObject (SMESH::SMESH_IDSource_ptr th
 CORBA::Long SMESH_MeshEditor_i::BestSplit (CORBA::Long                 IDOfQuad,
                                            SMESH::NumericalFunctor_ptr Criterion)
 {
+  initData();
+
   const SMDS_MeshElement* quad = GetMeshDS()->FindElement(IDOfQuad);
   if (quad && quad->GetType() == SMDSAbs_Face && quad->NbNodes() == 4)
   {
@@ -1141,6 +1260,36 @@ CORBA::Long SMESH_MeshEditor_i::BestSplit (CORBA::Long                 IDOfQuad,
   return -1;
 }
 
+//================================================================================
+/*!
+ * \brief Split volumic elements into tetrahedrons
+ */
+//================================================================================
+
+void SMESH_MeshEditor_i::SplitVolumesIntoTetra (SMESH::SMESH_IDSource_ptr elems,
+                                                CORBA::Short              methodFlags)
+  throw (SALOME::SALOME_Exception)
+{
+  Unexpect aCatch(SALOME_SalomeException);
+
+  initData();
+
+  SMESH::long_array_var anElementsId = elems->GetIDs();
+  TIDSortedElemSet elemSet;
+  arrayToSet( anElementsId, GetMeshDS(), elemSet, SMDSAbs_Volume );
+  
+  ::SMESH_MeshEditor anEditor (myMesh);
+  anEditor.SplitVolumesIntoTetra( elemSet, int( methodFlags ));
+  myMesh->GetMeshDS()->Modified();
+
+  storeResult(anEditor);
+
+//   if ( myLastCreatedElems.length() ) - it does not influence Compute()
+//     myMesh->SetIsModified( true ); // issue 0020693
+
+  TPythonDump() << this << ".SplitVolumesIntoTetra( "
+                << elems << ", " << methodFlags << " )";
+}
 
 //=======================================================================
 //function : Smooth
@@ -1148,14 +1297,14 @@ CORBA::Long SMESH_MeshEditor_i::BestSplit (CORBA::Long                 IDOfQuad,
 //=======================================================================
 
 CORBA::Boolean
-  SMESH_MeshEditor_i::Smooth(const SMESH::long_array &              IDsOfElements,
-                             const SMESH::long_array &              IDsOfFixedNodes,
-                             CORBA::Long                            MaxNbOfIterations,
-                             CORBA::Double                          MaxAspectRatio,
-                             SMESH::SMESH_MeshEditor::Smooth_Method Method)
+SMESH_MeshEditor_i::Smooth(const SMESH::long_array &              IDsOfElements,
+                           const SMESH::long_array &              IDsOfFixedNodes,
+                           CORBA::Long                            MaxNbOfIterations,
+                           CORBA::Double                          MaxAspectRatio,
+                           SMESH::SMESH_MeshEditor::Smooth_Method Method)
 {
   return smooth( IDsOfElements, IDsOfFixedNodes, MaxNbOfIterations,
-                MaxAspectRatio, Method, false );
+                 MaxAspectRatio, Method, false );
 }
 
 
@@ -1165,14 +1314,14 @@ CORBA::Boolean
 //=======================================================================
 
 CORBA::Boolean
-  SMESH_MeshEditor_i::SmoothParametric(const SMESH::long_array &              IDsOfElements,
-                                       const SMESH::long_array &              IDsOfFixedNodes,
-                                       CORBA::Long                            MaxNbOfIterations,
-                                       CORBA::Double                          MaxAspectRatio,
-                                       SMESH::SMESH_MeshEditor::Smooth_Method Method)
+SMESH_MeshEditor_i::SmoothParametric(const SMESH::long_array &              IDsOfElements,
+                                     const SMESH::long_array &              IDsOfFixedNodes,
+                                     CORBA::Long                            MaxNbOfIterations,
+                                     CORBA::Double                          MaxAspectRatio,
+                                     SMESH::SMESH_MeshEditor::Smooth_Method Method)
 {
   return smooth( IDsOfElements, IDsOfFixedNodes, MaxNbOfIterations,
-                MaxAspectRatio, Method, true );
+                 MaxAspectRatio, Method, true );
 }
 
 
@@ -1182,11 +1331,11 @@ CORBA::Boolean
 //=======================================================================
 
 CORBA::Boolean
-  SMESH_MeshEditor_i::SmoothObject(SMESH::SMESH_IDSource_ptr              theObject,
-                                  const SMESH::long_array &              IDsOfFixedNodes,
-                                  CORBA::Long                            MaxNbOfIterations,
-                                  CORBA::Double                          MaxAspectRatio,
-                                  SMESH::SMESH_MeshEditor::Smooth_Method Method)
+SMESH_MeshEditor_i::SmoothObject(SMESH::SMESH_IDSource_ptr              theObject,
+                                 const SMESH::long_array &              IDsOfFixedNodes,
+                                 CORBA::Long                            MaxNbOfIterations,
+                                 CORBA::Double                          MaxAspectRatio,
+                                 SMESH::SMESH_MeshEditor::Smooth_Method Method)
 {
   return smoothObject (theObject, IDsOfFixedNodes, MaxNbOfIterations,
                        MaxAspectRatio, Method, false);
@@ -1199,11 +1348,11 @@ CORBA::Boolean
 //=======================================================================
 
 CORBA::Boolean
-  SMESH_MeshEditor_i::SmoothParametricObject(SMESH::SMESH_IDSource_ptr              theObject,
-                                  const SMESH::long_array &              IDsOfFixedNodes,
-                                  CORBA::Long                            MaxNbOfIterations,
-                                  CORBA::Double                          MaxAspectRatio,
-                                  SMESH::SMESH_MeshEditor::Smooth_Method Method)
+SMESH_MeshEditor_i::SmoothParametricObject(SMESH::SMESH_IDSource_ptr              theObject,
+                                           const SMESH::long_array &              IDsOfFixedNodes,
+                                           CORBA::Long                            MaxNbOfIterations,
+                                           CORBA::Double                          MaxAspectRatio,
+                                           SMESH::SMESH_MeshEditor::Smooth_Method Method)
 {
   return smoothObject (theObject, IDsOfFixedNodes, MaxNbOfIterations,
                        MaxAspectRatio, Method, true);
@@ -1217,12 +1366,12 @@ CORBA::Boolean
 //=============================================================================
 
 CORBA::Boolean
-  SMESH_MeshEditor_i::smooth(const SMESH::long_array &              IDsOfElements,
-                             const SMESH::long_array &              IDsOfFixedNodes,
-                             CORBA::Long                            MaxNbOfIterations,
-                             CORBA::Double                          MaxAspectRatio,
-                             SMESH::SMESH_MeshEditor::Smooth_Method Method,
-                             bool                                   IsParametric)
+SMESH_MeshEditor_i::smooth(const SMESH::long_array &              IDsOfElements,
+                           const SMESH::long_array &              IDsOfFixedNodes,
+                           CORBA::Long                            MaxNbOfIterations,
+                           CORBA::Double                          MaxAspectRatio,
+                           SMESH::SMESH_MeshEditor::Smooth_Method Method,
+                           bool                                   IsParametric)
 {
   initData();
 
@@ -1246,6 +1395,9 @@ CORBA::Boolean
   anEditor.Smooth(elements, fixedNodes, method,
                   MaxNbOfIterations, MaxAspectRatio, IsParametric );
 
+  myMesh->GetMeshDS()->Modified();
+  myMesh->SetIsModified( true ); // issue 0020693
+
   storeResult(anEditor);
 
   // Update Python script
@@ -1256,9 +1408,6 @@ CORBA::Boolean
                 << "SMESH.SMESH_MeshEditor."
                 << ( Method == SMESH::SMESH_MeshEditor::CENTROIDAL_SMOOTH ?
                      "CENTROIDAL_SMOOTH )" : "LAPLACIAN_SMOOTH )");
-#ifdef _DEBUG_
-  TPythonDump() << "print 'Smooth: ', isDone";
-#endif
 
   return true;
 }
@@ -1280,28 +1429,20 @@ SMESH_MeshEditor_i::smoothObject(SMESH::SMESH_IDSource_ptr              theObjec
 {
   initData();
 
+  TPythonDump aTPythonDump;  // suppress dump in smooth()
+
   SMESH::long_array_var anElementsId = theObject->GetIDs();
   CORBA::Boolean isDone = smooth (anElementsId, IDsOfFixedNodes, MaxNbOfIterations,
                                   MaxAspectRatio, Method, IsParametric);
 
-  // Clear python line(s), created by Smooth()
-  SMESH_Gen_i* aSMESHGen = SMESH_Gen_i::GetSMESHGen();
-  aSMESHGen->RemoveLastFromPythonScript(aSMESHGen->GetCurrentStudyID());
-#ifdef _DEBUG_
-  aSMESHGen->RemoveLastFromPythonScript(aSMESHGen->GetCurrentStudyID());
-#endif
-
   // Update Python script
-  TPythonDump() << "isDone = " << this << "."
-                << (IsParametric ? "SmoothParametricObject( " : "SmoothObject( ")
-                << theObject << ", " << IDsOfFixedNodes << ", "
-                << MaxNbOfIterations << ", " << MaxAspectRatio << ", "
-                << "SMESH.SMESH_MeshEditor."
-                << ( Method == SMESH::SMESH_MeshEditor::CENTROIDAL_SMOOTH ?
-                     "CENTROIDAL_SMOOTH )" : "LAPLACIAN_SMOOTH )");
-#ifdef _DEBUG_
-  TPythonDump() << "print 'SmoothObject: ', isDone";
-#endif
+  aTPythonDump << "isDone = " << this << "."
+               << (IsParametric ? "SmoothParametricObject( " : "SmoothObject( ")
+               << theObject << ", " << IDsOfFixedNodes << ", "
+               << MaxNbOfIterations << ", " << MaxAspectRatio << ", "
+               << "SMESH.SMESH_MeshEditor."
+               << ( Method == SMESH::SMESH_MeshEditor::CENTROIDAL_SMOOTH ?
+                    "CENTROIDAL_SMOOTH )" : "LAPLACIAN_SMOOTH )");
 
   return isDone;
 }
@@ -1337,9 +1478,9 @@ void SMESH_MeshEditor_i::RenumberElements()
 }
 
 //=======================================================================
-  /*!
  * \brief Return groups by their IDs
  */
+/*!
+ * \brief Return groups by their IDs
+ */
 //=======================================================================
 
 SMESH::ListOfGroups* SMESH_MeshEditor_i::getGroups(const std::list<int>* groupIDs)
@@ -1362,7 +1503,7 @@ SMESH_MeshEditor_i::rotationSweep(const SMESH::long_array & theIDsOfElements,
                                   CORBA::Long               theNbOfSteps,
                                   CORBA::Double             theTolerance,
                                   const bool                theMakeGroups,
-                                 const SMDSAbs_ElementType theElementType)
+                                  const SMDSAbs_ElementType theElementType)
 {
   initData();
 
@@ -1391,9 +1532,12 @@ SMESH_MeshEditor_i::rotationSweep(const SMESH::long_array & theIDsOfElements,
 
   ::SMESH_MeshEditor anEditor( mesh );
   ::SMESH_MeshEditor::PGroupIDs groupIds =
-    anEditor.RotationSweep (*workElements, Ax1, theAngleInRadians,
-                            theNbOfSteps, theTolerance, theMakeGroups, makeWalls);
+      anEditor.RotationSweep (*workElements, Ax1, theAngleInRadians,
+                              theNbOfSteps, theTolerance, theMakeGroups, makeWalls);
   storeResult(anEditor);
+  myMesh->GetMeshDS()->Modified();
+
+  //  myMesh->SetIsModified( true ); -- it does not influence Compute()
 
   return theMakeGroups ? getGroups(groupIds.get()) : 0;
 }
@@ -1462,10 +1606,10 @@ SMESH_MeshEditor_i::RotationSweepMakeGroups(const SMESH::long_array& theIDsOfEle
 //=======================================================================
 
 void SMESH_MeshEditor_i::RotationSweepObject(SMESH::SMESH_IDSource_ptr theObject,
-                                            const SMESH::AxisStruct & theAxis,
-                                            CORBA::Double             theAngleInRadians,
-                                            CORBA::Long               theNbOfSteps,
-                                            CORBA::Double             theTolerance)
+                                             const SMESH::AxisStruct & theAxis,
+                                             CORBA::Double             theAngleInRadians,
+                                             CORBA::Long               theNbOfSteps,
+                                             CORBA::Double             theTolerance)
 {
   if ( !myPreviewMode ) {
     TPythonDump() << this << ".RotationSweepObject( "
@@ -1490,10 +1634,10 @@ void SMESH_MeshEditor_i::RotationSweepObject(SMESH::SMESH_IDSource_ptr theObject
 //=======================================================================
 
 void SMESH_MeshEditor_i::RotationSweepObject1D(SMESH::SMESH_IDSource_ptr theObject,
-                                              const SMESH::AxisStruct & theAxis,
-                                              CORBA::Double             theAngleInRadians,
-                                              CORBA::Long               theNbOfSteps,
-                                              CORBA::Double             theTolerance)
+                                               const SMESH::AxisStruct & theAxis,
+                                               CORBA::Double             theAngleInRadians,
+                                               CORBA::Long               theNbOfSteps,
+                                               CORBA::Double             theTolerance)
 {
   if ( !myPreviewMode ) {
     TPythonDump() << this << ".RotationSweepObject1D( "
@@ -1510,7 +1654,7 @@ void SMESH_MeshEditor_i::RotationSweepObject1D(SMESH::SMESH_IDSource_ptr theObje
                 theNbOfSteps,
                 theTolerance,
                 false,
-               SMDSAbs_Edge);
+                SMDSAbs_Edge);
 }
 
 //=======================================================================
@@ -1519,10 +1663,10 @@ void SMESH_MeshEditor_i::RotationSweepObject1D(SMESH::SMESH_IDSource_ptr theObje
 //=======================================================================
 
 void SMESH_MeshEditor_i::RotationSweepObject2D(SMESH::SMESH_IDSource_ptr theObject,
-                                              const SMESH::AxisStruct & theAxis,
-                                              CORBA::Double             theAngleInRadians,
-                                              CORBA::Long               theNbOfSteps,
-                                              CORBA::Double             theTolerance)
+                                               const SMESH::AxisStruct & theAxis,
+                                               CORBA::Double             theAngleInRadians,
+                                               CORBA::Long               theNbOfSteps,
+                                               CORBA::Double             theTolerance)
 {
   if ( !myPreviewMode ) {
     TPythonDump() << this << ".RotationSweepObject2D( "
@@ -1539,7 +1683,7 @@ void SMESH_MeshEditor_i::RotationSweepObject2D(SMESH::SMESH_IDSource_ptr theObje
                 theNbOfSteps,
                 theTolerance,
                 false,
-               SMDSAbs_Face);
+                SMDSAbs_Face);
 }
 
 //=======================================================================
@@ -1566,7 +1710,7 @@ SMESH_MeshEditor_i::RotationSweepObjectMakeGroups(SMESH::SMESH_IDSource_ptr theO
     DumpGroupsList(aPythonDump,aGroups);
     aPythonDump<< this << ".RotationSweepObjectMakeGroups( "
                << theObject << ", "
-              << theAxis << ", "
+               << theAxis << ", "
                << theAngleInRadians << ", "
                << theNbOfSteps << ", "
                << theTolerance << " )";
@@ -1581,10 +1725,10 @@ SMESH_MeshEditor_i::RotationSweepObjectMakeGroups(SMESH::SMESH_IDSource_ptr theO
 
 SMESH::ListOfGroups*
 SMESH_MeshEditor_i::RotationSweepObject1DMakeGroups(SMESH::SMESH_IDSource_ptr theObject,
-                                                   const SMESH::AxisStruct&  theAxis,
-                                                   CORBA::Double             theAngleInRadians,
-                                                   CORBA::Long               theNbOfSteps,
-                                                   CORBA::Double             theTolerance)
+                                                    const SMESH::AxisStruct&  theAxis,
+                                                    CORBA::Double             theAngleInRadians,
+                                                    CORBA::Long               theNbOfSteps,
+                                                    CORBA::Double             theTolerance)
 {
   SMESH::long_array_var anElementsId = theObject->GetIDs();
   SMESH::ListOfGroups *aGroups = rotationSweep(anElementsId,
@@ -1593,13 +1737,13 @@ SMESH_MeshEditor_i::RotationSweepObject1DMakeGroups(SMESH::SMESH_IDSource_ptr th
                                                theNbOfSteps,
                                                theTolerance,
                                                true,
-                                              SMDSAbs_Edge);
+                                               SMDSAbs_Edge);
   if ( !myPreviewMode ) {
     TPythonDump aPythonDump;
     DumpGroupsList(aPythonDump,aGroups);
     aPythonDump<< this << ".RotationSweepObject1DMakeGroups( "
                << theObject << ", "
-              << theAxis << ", "
+               << theAxis << ", "
                << theAngleInRadians << ", "
                << theNbOfSteps << ", "
                << theTolerance << " )";
@@ -1614,10 +1758,10 @@ SMESH_MeshEditor_i::RotationSweepObject1DMakeGroups(SMESH::SMESH_IDSource_ptr th
 
 SMESH::ListOfGroups*
 SMESH_MeshEditor_i::RotationSweepObject2DMakeGroups(SMESH::SMESH_IDSource_ptr theObject,
-                                                   const SMESH::AxisStruct&  theAxis,
-                                                   CORBA::Double             theAngleInRadians,
-                                                   CORBA::Long               theNbOfSteps,
-                                                   CORBA::Double             theTolerance)
+                                                    const SMESH::AxisStruct&  theAxis,
+                                                    CORBA::Double             theAngleInRadians,
+                                                    CORBA::Long               theNbOfSteps,
+                                                    CORBA::Double             theTolerance)
 {
   SMESH::long_array_var anElementsId = theObject->GetIDs();
   SMESH::ListOfGroups *aGroups = rotationSweep(anElementsId,
@@ -1626,13 +1770,13 @@ SMESH_MeshEditor_i::RotationSweepObject2DMakeGroups(SMESH::SMESH_IDSource_ptr th
                                                theNbOfSteps,
                                                theTolerance,
                                                true,
-                                              SMDSAbs_Face);
+                                               SMDSAbs_Face);
   if ( !myPreviewMode ) {
     TPythonDump aPythonDump;
     DumpGroupsList(aPythonDump,aGroups);
     aPythonDump<< this << ".RotationSweepObject2DMakeGroups( "
                << theObject << ", "
-              << theAxis << ", "
+               << theAxis << ", "
                << theAngleInRadians << ", "
                << theNbOfSteps << ", "
                << theTolerance << " )";
@@ -1670,6 +1814,7 @@ SMESH_MeshEditor_i::extrusionSweep(const SMESH::long_array & theIDsOfElements,
     ::SMESH_MeshEditor::PGroupIDs groupIds =
         anEditor.ExtrusionSweep (elements, stepVec, theNbOfSteps, aHystory, theMakeGroups);
 
+    myMesh->GetMeshDS()->Modified();
     storeResult(anEditor);
 
     return theMakeGroups ? getGroups(groupIds.get()) : 0;
@@ -1704,8 +1849,8 @@ void SMESH_MeshEditor_i::ExtrusionSweep(const SMESH::long_array & theIDsOfElemen
 //=======================================================================
 
 void SMESH_MeshEditor_i::ExtrusionSweepObject(SMESH::SMESH_IDSource_ptr theObject,
-                                             const SMESH::DirStruct &  theStepVector,
-                                             CORBA::Long               theNbOfSteps)
+                                              const SMESH::DirStruct &  theStepVector,
+                                              CORBA::Long               theNbOfSteps)
 {
   SMESH::long_array_var anElementsId = theObject->GetIDs();
   extrusionSweep (anElementsId, theStepVector, theNbOfSteps, false );
@@ -1760,7 +1905,7 @@ SMESH_MeshEditor_i::ExtrusionSweepMakeGroups(const SMESH::long_array& theIDsOfEl
                                              CORBA::Long              theNbOfSteps)
 {
   SMESH::ListOfGroups* aGroups = extrusionSweep (theIDsOfElements, theStepVector, theNbOfSteps, true );
-    
+
   if ( !myPreviewMode ) {
     TPythonDump aPythonDump;
     DumpGroupsList(aPythonDump,aGroups);
@@ -1781,7 +1926,7 @@ SMESH_MeshEditor_i::ExtrusionSweepObjectMakeGroups(SMESH::SMESH_IDSource_ptr the
 {
   SMESH::long_array_var anElementsId = theObject->GetIDs();
   SMESH::ListOfGroups * aGroups = extrusionSweep (anElementsId, theStepVector, theNbOfSteps, true );
-  
+
   if ( !myPreviewMode ) {
     TPythonDump aPythonDump;
     DumpGroupsList(aPythonDump,aGroups);
@@ -1807,7 +1952,7 @@ SMESH_MeshEditor_i::ExtrusionSweepObject1DMakeGroups(SMESH::SMESH_IDSource_ptr t
     TPythonDump aPythonDump;
     DumpGroupsList(aPythonDump,aGroups);
     aPythonDump << this << ".ExtrusionSweepObject1DMakeGroups( "
-               << theObject << ", " << theStepVector << ", " << theNbOfSteps << " )";
+                << theObject << ", " << theStepVector << ", " << theNbOfSteps << " )";
   }
   return aGroups;
 }
@@ -1828,7 +1973,7 @@ SMESH_MeshEditor_i::ExtrusionSweepObject2DMakeGroups(SMESH::SMESH_IDSource_ptr t
     TPythonDump aPythonDump;
     DumpGroupsList(aPythonDump,aGroups);
     aPythonDump << this << ".ExtrusionSweepObject2DMakeGroups( "
-               << theObject << ", " << theStepVector << ", " << theNbOfSteps << " )";
+                << theObject << ", " << theStepVector << ", " << theNbOfSteps << " )";
   }
   return aGroups;
 }
@@ -1871,10 +2016,10 @@ SMESH_MeshEditor_i::advancedExtrusion(const SMESH::long_array & theIDsOfElements
 //=======================================================================
 
 void SMESH_MeshEditor_i::AdvancedExtrusion(const SMESH::long_array & theIDsOfElements,
-                                          const SMESH::DirStruct &  theStepVector,
-                                          CORBA::Long               theNbOfSteps,
-                                          CORBA::Long               theExtrFlags,
-                                          CORBA::Double             theSewTolerance)
+                                           const SMESH::DirStruct &  theStepVector,
+                                           CORBA::Long               theNbOfSteps,
+                                           CORBA::Long               theExtrFlags,
+                                           CORBA::Double             theSewTolerance)
 {
   if ( !myPreviewMode ) {
     TPythonDump() << "stepVector = " << theStepVector;
@@ -1906,12 +2051,12 @@ SMESH_MeshEditor_i::AdvancedExtrusionMakeGroups(const SMESH::long_array& theIDsO
                                                 CORBA::Double            theSewTolerance)
 {
   SMESH::ListOfGroups * aGroups = advancedExtrusion( theIDsOfElements,
-                                                    theStepVector,
-                                                    theNbOfSteps,
-                                                    theExtrFlags,
-                                                    theSewTolerance,
-                                                    true);
-  
+                                                     theStepVector,
+                                                     theNbOfSteps,
+                                                     theExtrFlags,
+                                                     theSewTolerance,
+                                                     true);
+
   if ( !myPreviewMode ) {
     TPythonDump() << "stepVector = " << theStepVector;
     TPythonDump aPythonDump;
@@ -1938,13 +2083,13 @@ SMESH_MeshEditor_i::AdvancedExtrusionMakeGroups(const SMESH::long_array& theIDsO
 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 );
+    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;
 }
@@ -1966,8 +2111,9 @@ SMESH_MeshEditor_i::extrusionAlongPath(const SMESH::long_array &   theIDsOfEleme
                                        const SMESH::PointStruct &  theRefPoint,
                                        const bool                  theMakeGroups,
                                        SMESH::SMESH_MeshEditor::Extrusion_Error & theError,
-                                      const SMDSAbs_ElementType   theElementType)
+                                       const SMDSAbs_ElementType   theElementType)
 {
+  MESSAGE("extrusionAlongPath");
   initData();
 
   if ( thePathMesh->_is_nil() || thePathShape->_is_nil() ) {
@@ -2007,6 +2153,7 @@ SMESH_MeshEditor_i::extrusionAlongPath(const SMESH::long_array &   theIDsOfEleme
       anEditor.ExtrusionAlongTrack( elements, aSubMesh, nodeStart,
                                     theHasAngles, angles, false,
                                     theHasRefPoint, refPnt, theMakeGroups );
+  myMesh->GetMeshDS()->Modified();
   storeResult(anEditor);
   theError = convExtrError( error );
 
@@ -2028,16 +2175,16 @@ SMESH_MeshEditor_i::extrusionAlongPath(const SMESH::long_array &   theIDsOfEleme
 
 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,
-                                       const bool                 MakeGroups,
-                                       const SMDSAbs_ElementType  ElementType,
-                                       SMESH::SMESH_MeshEditor::Extrusion_Error & Error)
+                                        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,
+                                        const bool                 MakeGroups,
+                                        const SMDSAbs_ElementType  ElementType,
+                                        SMESH::SMESH_MeshEditor::Extrusion_Error & Error)
 {
   SMESH::ListOfGroups* EmptyGr = new SMESH::ListOfGroups;
 
@@ -2071,8 +2218,9 @@ SMESH_MeshEditor_i::extrusionAlongPathX(const SMESH::long_array &  IDsOfElements
       return EmptyGr;
     }
     error = anEditor.ExtrusionAlongTrack( elements, &(aMeshImp->GetImpl()), aNodeStart,
-                                         HasAngles, angles, LinearVariation,
-                                         HasRefPoint, refPnt, MakeGroups );
+                                          HasAngles, angles, LinearVariation,
+                                          HasRefPoint, refPnt, MakeGroups );
+    myMesh->GetMeshDS()->Modified();
   }
   else {
     SMESH_subMesh_i* aSubMeshImp = SMESH::DownCast<SMESH_subMesh_i*>( Path );
@@ -2081,26 +2229,27 @@ SMESH_MeshEditor_i::extrusionAlongPathX(const SMESH::long_array &  IDsOfElements
       SMESH::SMESH_Mesh_ptr aPathMesh = aSubMeshImp->GetFather();
       aMeshImp = SMESH::DownCast<SMESH_Mesh_i*>( aPathMesh );
       SMDS_MeshNode* aNodeStart = 
-       (SMDS_MeshNode*)aMeshImp->GetImpl().GetMeshDS()->FindNode(NodeStart);
+        (SMDS_MeshNode*)aMeshImp->GetImpl().GetMeshDS()->FindNode(NodeStart);
       if ( !aNodeStart ) {
-       Error = SMESH::SMESH_MeshEditor::EXTR_BAD_STARTING_NODE;
-       return EmptyGr;
+        Error = SMESH::SMESH_MeshEditor::EXTR_BAD_STARTING_NODE;
+        return EmptyGr;
       }
       SMESH_subMesh* aSubMesh = 
-       aMeshImp->GetImpl().GetSubMeshContaining(aSubMeshImp->GetId());
+        aMeshImp->GetImpl().GetSubMeshContaining(aSubMeshImp->GetId());
       error = anEditor.ExtrusionAlongTrack( elements, aSubMesh, aNodeStart,
-                                           HasAngles, angles, LinearVariation,
-                                           HasRefPoint, refPnt, MakeGroups );
+                                            HasAngles, angles, LinearVariation,
+                                            HasRefPoint, refPnt, MakeGroups );
+      myMesh->GetMeshDS()->Modified();
     }
     else {
       SMESH_Group_i* aGroupImp = SMESH::DownCast<SMESH_Group_i*>( Path );
       if(aGroupImp) {
-       // path as group of 1D elements
+        // path as group of 1D elements
       }
       else {
-       // invalid path
-       Error = SMESH::SMESH_MeshEditor::EXTR_BAD_PATH_SHAPE;
-       return EmptyGr;
+        // invalid path
+        Error = SMESH::SMESH_MeshEditor::EXTR_BAD_PATH_SHAPE;
+        return EmptyGr;
       }
     }
   }
@@ -2125,15 +2274,16 @@ SMESH_MeshEditor_i::extrusionAlongPathX(const SMESH::long_array &  IDsOfElements
 //=======================================================================
 
 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)
+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)
 {
+  MESSAGE("ExtrusionAlongPath");
   if ( !myPreviewMode ) {
     TPythonDump() << "error = " << this << ".ExtrusionAlongPath( "
                   << theIDsOfElements << ", "
@@ -2213,13 +2363,13 @@ SMESH_MeshEditor_i::ExtrusionAlongPathObject(SMESH::SMESH_IDSource_ptr   theObje
 
 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)
+                                               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)
 {
   if ( !myPreviewMode ) {
     TPythonDump() << "error = " << this << ".ExtrusionAlongPathObject1D( "
@@ -2247,7 +2397,7 @@ SMESH_MeshEditor_i::ExtrusionAlongPathObject1D(SMESH::SMESH_IDSource_ptr   theOb
                       theRefPoint,
                       false,
                       anError,
-                     SMDSAbs_Edge);
+                      SMDSAbs_Edge);
   return anError;
 }
 
@@ -2258,13 +2408,13 @@ SMESH_MeshEditor_i::ExtrusionAlongPathObject1D(SMESH::SMESH_IDSource_ptr   theOb
 
 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)
+                                               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)
 {
   if ( !myPreviewMode ) {
     TPythonDump() << "error = " << this << ".ExtrusionAlongPathObject2D( "
@@ -2292,7 +2442,7 @@ SMESH_MeshEditor_i::ExtrusionAlongPathObject2D(SMESH::SMESH_IDSource_ptr   theOb
                       theRefPoint,
                       false,
                       anError,
-                     SMDSAbs_Face);
+                      SMDSAbs_Face);
   return anError;
 }
 
@@ -2313,16 +2463,16 @@ SMESH_MeshEditor_i::ExtrusionAlongPathMakeGroups(const SMESH::long_array&   theI
                                                  const SMESH::PointStruct&  theRefPoint,
                                                  SMESH::SMESH_MeshEditor::Extrusion_Error& Error)
 {
-    SMESH::ListOfGroups * aGroups =  extrusionAlongPath( theIDsOfElements,
-                                                         thePathMesh,
-                                                         thePathShape,
-                                                         theNodeStart,
-                                                         theHasAngles,
-                                                         theAngles,
-                                                         theHasRefPoint,
-                                                         theRefPoint,
-                                                         true,
-                                                         Error);
+  SMESH::ListOfGroups * aGroups =  extrusionAlongPath( theIDsOfElements,
+                                                       thePathMesh,
+                                                       thePathShape,
+                                                       theNodeStart,
+                                                       theHasAngles,
+                                                       theAngles,
+                                                       theHasRefPoint,
+                                                       theRefPoint,
+                                                       true,
+                                                       Error);
   if ( !myPreviewMode ) {
     bool isDumpGroups = aGroups && aGroups->length() > 0;
     TPythonDump aPythonDump;
@@ -2333,7 +2483,7 @@ SMESH_MeshEditor_i::ExtrusionAlongPathMakeGroups(const SMESH::long_array&   theI
       aPythonDump << ", error)";
     else
       aPythonDump <<"error";
-    
+
     aPythonDump<<" = "<< this << ".ExtrusionAlongPathMakeGroups( "
                << theIDsOfElements << ", "
                << thePathMesh      << ", "
@@ -2377,7 +2527,7 @@ ExtrusionAlongPathObjectMakeGroups(SMESH::SMESH_IDSource_ptr  theObject,
                                                       theRefPoint,
                                                       true,
                                                       Error);
-  
+
   if ( !myPreviewMode ) {
     bool isDumpGroups = aGroups && aGroups->length() > 0;
     TPythonDump aPythonDump;
@@ -2396,11 +2546,11 @@ ExtrusionAlongPathObjectMakeGroups(SMESH::SMESH_IDSource_ptr  theObject,
                 << theNodeStart     << ", "
                 << theHasAngles     << ", "
                 << theAngles        << ", "
-               << theHasRefPoint   << ", "
-               << "SMESH.PointStruct( "
-               << ( theHasRefPoint ? theRefPoint.x : 0 ) << ", "
-               << ( theHasRefPoint ? theRefPoint.y : 0 ) << ", "
-               << ( theHasRefPoint ? theRefPoint.z : 0 ) << " ) )";
+                << theHasRefPoint   << ", "
+                << "SMESH.PointStruct( "
+                << ( theHasRefPoint ? theRefPoint.x : 0 ) << ", "
+                << ( theHasRefPoint ? theRefPoint.y : 0 ) << ", "
+                << ( theHasRefPoint ? theRefPoint.z : 0 ) << " ) )";
   }
   return aGroups;
 }
@@ -2412,14 +2562,14 @@ ExtrusionAlongPathObjectMakeGroups(SMESH::SMESH_IDSource_ptr  theObject,
 
 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)
+                                     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::long_array_var anElementsId = theObject->GetIDs();
   SMESH::ListOfGroups * aGroups = extrusionAlongPath( anElementsId,
@@ -2432,8 +2582,8 @@ ExtrusionAlongPathObject1DMakeGroups(SMESH::SMESH_IDSource_ptr  theObject,
                                                       theRefPoint,
                                                       true,
                                                       Error,
-                                                     SMDSAbs_Edge);
-  
+                                                      SMDSAbs_Edge);
+
   if ( !myPreviewMode ) {
     bool isDumpGroups = aGroups && aGroups->length() > 0;
     TPythonDump aPythonDump;
@@ -2452,11 +2602,11 @@ ExtrusionAlongPathObject1DMakeGroups(SMESH::SMESH_IDSource_ptr  theObject,
                 << theNodeStart     << ", "
                 << theHasAngles     << ", "
                 << theAngles        << ", "
-               << theHasRefPoint   << ", "
-               << "SMESH.PointStruct( "
-               << ( theHasRefPoint ? theRefPoint.x : 0 ) << ", "
-               << ( theHasRefPoint ? theRefPoint.y : 0 ) << ", "
-               << ( theHasRefPoint ? theRefPoint.z : 0 ) << " ) )";
+                << theHasRefPoint   << ", "
+                << "SMESH.PointStruct( "
+                << ( theHasRefPoint ? theRefPoint.x : 0 ) << ", "
+                << ( theHasRefPoint ? theRefPoint.y : 0 ) << ", "
+                << ( theHasRefPoint ? theRefPoint.z : 0 ) << " ) )";
   }
   return aGroups;
 }
@@ -2468,14 +2618,14 @@ ExtrusionAlongPathObject1DMakeGroups(SMESH::SMESH_IDSource_ptr  theObject,
 
 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::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::long_array_var anElementsId = theObject->GetIDs();
   SMESH::ListOfGroups * aGroups = extrusionAlongPath( anElementsId,
@@ -2488,8 +2638,8 @@ ExtrusionAlongPathObject2DMakeGroups(SMESH::SMESH_IDSource_ptr  theObject,
                                                       theRefPoint,
                                                       true,
                                                       Error,
-                                                     SMDSAbs_Face);
-  
+                                                      SMDSAbs_Face);
+
   if ( !myPreviewMode ) {
     bool isDumpGroups = aGroups && aGroups->length() > 0;
     TPythonDump aPythonDump;
@@ -2508,11 +2658,11 @@ ExtrusionAlongPathObject2DMakeGroups(SMESH::SMESH_IDSource_ptr  theObject,
                 << theNodeStart     << ", "
                 << theHasAngles     << ", "
                 << theAngles        << ", "
-               << theHasRefPoint   << ", "
-               << "SMESH.PointStruct( "
-               << ( theHasRefPoint ? theRefPoint.x : 0 ) << ", "
-               << ( theHasRefPoint ? theRefPoint.y : 0 ) << ", "
-               << ( theHasRefPoint ? theRefPoint.z : 0 ) << " ) )";
+                << theHasRefPoint   << ", "
+                << "SMESH.PointStruct( "
+                << ( theHasRefPoint ? theRefPoint.x : 0 ) << ", "
+                << ( theHasRefPoint ? theRefPoint.y : 0 ) << ", "
+                << ( theHasRefPoint ? theRefPoint.z : 0 ) << " ) )";
   }
   return aGroups;
 }
@@ -2524,30 +2674,30 @@ ExtrusionAlongPathObject2DMakeGroups(SMESH::SMESH_IDSource_ptr  theObject,
 //=======================================================================
 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)
+                       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)
 {
   SMESH::long_array_var anElementsId = Object->GetIDs();
   SMESH::ListOfGroups * aGroups = extrusionAlongPathX(anElementsId,
-                                                     Path,
-                                                     NodeStart,
-                                                     HasAngles,
-                                                     Angles,
-                                                     LinearVariation,
-                                                     HasRefPoint,
-                                                     RefPoint,
-                                                     MakeGroups,
-                                                     (SMDSAbs_ElementType)ElemType,
-                                                     Error);
-  
+                                                      Path,
+                                                      NodeStart,
+                                                      HasAngles,
+                                                      Angles,
+                                                      LinearVariation,
+                                                      HasRefPoint,
+                                                      RefPoint,
+                                                      MakeGroups,
+                                                      (SMDSAbs_ElementType)ElemType,
+                                                      Error);
+
   if ( !myPreviewMode ) {
     bool isDumpGroups = aGroups && aGroups->length() > 0;
     TPythonDump aPythonDump;
@@ -2565,13 +2715,14 @@ ExtrusionAlongPathObjX(SMESH::SMESH_IDSource_ptr  Object,
                 << NodeStart   << ", "
                 << HasAngles   << ", "
                 << Angles      << ", "
-               << LinearVariation << ", "
-               << HasRefPoint << ", "
-               << "SMESH.PointStruct( "
-               << ( HasRefPoint ? RefPoint.x : 0 ) << ", "
-               << ( HasRefPoint ? RefPoint.y : 0 ) << ", "
-               << ( HasRefPoint ? RefPoint.z : 0 ) << " ), "
-               << ElemType << " )";
+                << LinearVariation << ", "
+                << HasRefPoint << ", "
+                << "SMESH.PointStruct( "
+                << ( HasRefPoint ? RefPoint.x : 0 ) << ", "
+                << ( HasRefPoint ? RefPoint.y : 0 ) << ", "
+                << ( HasRefPoint ? RefPoint.z : 0 ) << " ), "
+                << MakeGroups << ", "
+                << ElemType << " )";
   }
   return aGroups;
 }
@@ -2583,29 +2734,29 @@ ExtrusionAlongPathObjX(SMESH::SMESH_IDSource_ptr  Object,
 //=======================================================================
 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)
+                    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)
 {
   SMESH::ListOfGroups * aGroups = extrusionAlongPathX(IDsOfElements,
-                                                     Path,
-                                                     NodeStart,
-                                                     HasAngles,
-                                                     Angles,
-                                                     LinearVariation,
-                                                     HasRefPoint,
-                                                     RefPoint,
-                                                     MakeGroups,
-                                                     (SMDSAbs_ElementType)ElemType,
-                                                     Error);
-  
+                                                      Path,
+                                                      NodeStart,
+                                                      HasAngles,
+                                                      Angles,
+                                                      LinearVariation,
+                                                      HasRefPoint,
+                                                      RefPoint,
+                                                      MakeGroups,
+                                                      (SMDSAbs_ElementType)ElemType,
+                                                      Error);
+
   if ( !myPreviewMode ) {
     bool isDumpGroups = aGroups && aGroups->length() > 0;
     TPythonDump aPythonDump;
@@ -2623,13 +2774,13 @@ ExtrusionAlongPathX(const SMESH::long_array&   IDsOfElements,
                 << NodeStart   << ", "
                 << HasAngles   << ", "
                 << Angles      << ", "
-               << LinearVariation << ", "
-               << HasRefPoint << ", "
-               << "SMESH.PointStruct( "
-               << ( HasRefPoint ? RefPoint.x : 0 ) << ", "
-               << ( HasRefPoint ? RefPoint.y : 0 ) << ", "
-               << ( HasRefPoint ? RefPoint.z : 0 ) << " ), "
-               << ElemType << " )";
+                << LinearVariation << ", "
+                << HasRefPoint << ", "
+                << "SMESH.PointStruct( "
+                << ( HasRefPoint ? RefPoint.x : 0 ) << ", "
+                << ( HasRefPoint ? RefPoint.y : 0 ) << ", "
+                << ( HasRefPoint ? RefPoint.z : 0 ) << " ), "
+                << ElemType << " )";
   }
   return aGroups;
 }
@@ -2639,10 +2790,10 @@ ExtrusionAlongPathX(const SMESH::long_array&   IDsOfElements,
 /*!
  * \brief Compute rotation angles for ExtrusionAlongPath as linear variation
  * of given angles along path steps
 * \param PathMesh mesh containing a 1D sub-mesh on the edge, along 
 *                which proceeds the extrusion
 * \param PathShape is shape(edge); as the mesh can be complex, the edge 
 *                 is used to define the sub-mesh for the path
+ * \param PathMesh mesh containing a 1D sub-mesh on the edge, along 
+ *                which proceeds the extrusion
+ * \param PathShape is shape(edge); as the mesh can be complex, the edge 
+ *                 is used to define the sub-mesh for the path
  */
 //================================================================================
 
@@ -2682,7 +2833,7 @@ SMESH_MeshEditor_i::LinearAnglesVariation(SMESH::SMESH_Mesh_ptr       thePathMes
           int iP = int( angPrevFloor );
           double angPrevCeil = ceil(angPrev);
           angle = ( angPrevCeil - angPrev ) * theAngles[ iP ];
-          
+
           int iC = int( angCurFloor );
           if ( iC < nbAngles )
             angle += ( angCur - angCurFloor ) * theAngles[ iC ];
@@ -2713,7 +2864,7 @@ SMESH_MeshEditor_i::LinearAnglesVariation(SMESH::SMESH_Mesh_ptr       thePathMes
 //=======================================================================
 
 SMESH::ListOfGroups*
-SMESH_MeshEditor_i::mirror(const SMESH::long_array &           theIDsOfElements,
+SMESH_MeshEditor_i::mirror(TIDSortedElemSet &                  theElements,
                            const SMESH::AxisStruct &           theAxis,
                            SMESH::SMESH_MeshEditor::MirrorType theMirrorType,
                            CORBA::Boolean                      theCopy,
@@ -2722,9 +2873,6 @@ SMESH_MeshEditor_i::mirror(const SMESH::long_array &           theIDsOfElements,
 {
   initData();
 
-  TIDSortedElemSet elements;
-  arrayToSet(theIDsOfElements, GetMeshDS(), elements);
-
   gp_Pnt P ( theAxis.x, theAxis.y, theAxis.z );
   gp_Vec V ( theAxis.vx, theAxis.vy, theAxis.vz );
 
@@ -2742,11 +2890,16 @@ SMESH_MeshEditor_i::mirror(const SMESH::long_array &           theIDsOfElements,
 
   ::SMESH_MeshEditor anEditor( myMesh );
   ::SMESH_MeshEditor::PGroupIDs groupIds =
-      anEditor.Transform (elements, aTrsf, theCopy, theMakeGroups, theTargetMesh);
+      anEditor.Transform (theElements, aTrsf, theCopy, theMakeGroups, theTargetMesh);
 
-  if(theCopy) {
+  if(theCopy)
     storeResult(anEditor);
-  }
+  else
+    {
+      myMesh->GetMeshDS()->Modified();
+      myMesh->SetIsModified( true );
+    }
+
   return theMakeGroups ? getGroups(groupIds.get()) : 0;
 }
 
@@ -2767,7 +2920,12 @@ void SMESH_MeshEditor_i::Mirror(const SMESH::long_array &           theIDsOfElem
                   << mirrorTypeName(theMirrorType) << ", "
                   << theCopy          << " )";
   }
-  mirror(theIDsOfElements, theAxis, theMirrorType, theCopy, false);
+  if ( theIDsOfElements.length() > 0 )
+  {
+    TIDSortedElemSet elements;
+    arrayToSet(theIDsOfElements, GetMeshDS(), elements);
+    mirror(elements, theAxis, theMirrorType, theCopy, false);
+  }
 }
 
 
@@ -2777,9 +2935,9 @@ void SMESH_MeshEditor_i::Mirror(const SMESH::long_array &           theIDsOfElem
 //=======================================================================
 
 void SMESH_MeshEditor_i::MirrorObject(SMESH::SMESH_IDSource_ptr           theObject,
-                                     const SMESH::AxisStruct &           theAxis,
-                                     SMESH::SMESH_MeshEditor::MirrorType theMirrorType,
-                                     CORBA::Boolean                      theCopy)
+                                      const SMESH::AxisStruct &           theAxis,
+                                      SMESH::SMESH_MeshEditor::MirrorType theMirrorType,
+                                      CORBA::Boolean                      theCopy)
 {
   if ( !myPreviewMode ) {
     TPythonDump() << this << ".MirrorObject( "
@@ -2788,8 +2946,9 @@ void SMESH_MeshEditor_i::MirrorObject(SMESH::SMESH_IDSource_ptr           theObj
                   << mirrorTypeName(theMirrorType) << ", "
                   << theCopy   << " )";
   }
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  mirror(anElementsId, theAxis, theMirrorType, theCopy, false);
+  TIDSortedElemSet elements;
+  if (idSourceToSet(theObject, GetMeshDS(), elements, SMDSAbs_All, /*emptyIfIsMesh=*/1))
+    mirror(elements, theAxis, theMirrorType, theCopy, false);
 }
 
 //=======================================================================
@@ -2802,7 +2961,13 @@ SMESH_MeshEditor_i::MirrorMakeGroups(const SMESH::long_array&            theIDsO
                                      const SMESH::AxisStruct&            theMirror,
                                      SMESH::SMESH_MeshEditor::MirrorType theMirrorType)
 {
-  SMESH::ListOfGroups * aGroups = mirror(theIDsOfElements, theMirror, theMirrorType, true, true);
+  SMESH::ListOfGroups * aGroups = 0;
+  if ( theIDsOfElements.length() > 0 )
+  {
+    TIDSortedElemSet elements;
+    arrayToSet(theIDsOfElements, GetMeshDS(), elements);
+    aGroups = mirror(elements, theMirror, theMirrorType, true, true);
+  }
   if ( !myPreviewMode ) {
     TPythonDump aPythonDump;
     DumpGroupsList(aPythonDump,aGroups);
@@ -2824,9 +2989,13 @@ SMESH_MeshEditor_i::MirrorObjectMakeGroups(SMESH::SMESH_IDSource_ptr           t
                                            const SMESH::AxisStruct&            theMirror,
                                            SMESH::SMESH_MeshEditor::MirrorType theMirrorType)
 {
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  SMESH::ListOfGroups * aGroups = mirror(anElementsId, theMirror, theMirrorType, true, true);
-  if ( !myPreviewMode ) {
+  SMESH::ListOfGroups * aGroups = 0;
+  TIDSortedElemSet elements;
+  if ( idSourceToSet(theObject, GetMeshDS(), elements, SMDSAbs_All, /*emptyIfIsMesh=*/1))
+    aGroups = mirror(elements, theMirror, theMirrorType, true, true);
+
+  if ( !myPreviewMode )
+  {
     TPythonDump aPythonDump;
     DumpGroupsList(aPythonDump,aGroups);
     aPythonDump << this << ".MirrorObjectMakeGroups( "
@@ -2853,17 +3022,20 @@ SMESH_MeshEditor_i::MirrorMakeMesh(const SMESH::long_array&            theIDsOfE
   SMESH::SMESH_Mesh_var mesh;
   { // open new scope to dump "MakeMesh" command
     // and then "GetGroups" using SMESH_Mesh::GetGroups()
-    
+
     TPythonDump pydump; // to prevent dump at mesh creation
 
     mesh = makeMesh( theMeshName );
     mesh_i = SMESH::DownCast<SMESH_Mesh_i*>( mesh );
-    if (mesh_i) {
-      mirror(theIDsOfElements, theMirror, theMirrorType,
+    if (mesh_i && theIDsOfElements.length() > 0 )
+    {
+      TIDSortedElemSet elements;
+      arrayToSet(theIDsOfElements, GetMeshDS(), elements);
+      mirror(elements, theMirror, theMirrorType,
              false, theCopyGroups, & mesh_i->GetImpl());
       mesh_i->CreateGroupServants();
     }
-    
+
     if ( !myPreviewMode ) {
       pydump << mesh << " = " << this << ".MirrorMakeMesh( "
              << theIDsOfElements << ", "
@@ -2877,7 +3049,7 @@ SMESH_MeshEditor_i::MirrorMakeMesh(const SMESH::long_array&            theIDsOfE
   //dump "GetGroups"
   if(!myPreviewMode && mesh_i)
     mesh_i->GetGroups();
-  
+
   return mesh._retn();
 }
 
@@ -2897,18 +3069,19 @@ SMESH_MeshEditor_i::MirrorObjectMakeMesh(SMESH::SMESH_IDSource_ptr           the
   SMESH::SMESH_Mesh_var mesh;
   { // open new scope to dump "MakeMesh" command
     // and then "GetGroups" using SMESH_Mesh::GetGroups()
-    
+
     TPythonDump pydump; // to prevent dump at mesh creation
 
     mesh = makeMesh( theMeshName );
     mesh_i = SMESH::DownCast<SMESH_Mesh_i*>( mesh );
-    if ( mesh_i ) {
-      SMESH::long_array_var anElementsId = theObject->GetIDs();
-      mirror(anElementsId, theMirror, theMirrorType,
+    TIDSortedElemSet elements;
+    if ( mesh_i &&
+         idSourceToSet(theObject, GetMeshDS(), elements, SMDSAbs_All, /*emptyIfIsMesh=*/1))
+    {
+      mirror(elements, theMirror, theMirrorType,
              false, theCopyGroups, & mesh_i->GetImpl());
       mesh_i->CreateGroupServants();
     }
-
     if ( !myPreviewMode ) {
       pydump << mesh << " = " << this << ".MirrorObjectMakeMesh( "
              << theObject << ", "
@@ -2917,12 +3090,12 @@ SMESH_MeshEditor_i::MirrorObjectMakeMesh(SMESH::SMESH_IDSource_ptr           the
              << theCopyGroups << ", '"
              << theMeshName << "' )";
     }
-  } 
+  }
 
   //dump "GetGroups"
   if(!myPreviewMode && mesh_i)
     mesh_i->GetGroups();
-  
+
   return mesh._retn();
 }
 
@@ -2932,7 +3105,7 @@ SMESH_MeshEditor_i::MirrorObjectMakeMesh(SMESH::SMESH_IDSource_ptr           the
 //=======================================================================
 
 SMESH::ListOfGroups*
-SMESH_MeshEditor_i::translate(const SMESH::long_array & theIDsOfElements,
+SMESH_MeshEditor_i::translate(TIDSortedElemSet        & theElements,
                               const SMESH::DirStruct &  theVector,
                               CORBA::Boolean            theCopy,
                               const bool                theMakeGroups,
@@ -2940,19 +3113,21 @@ SMESH_MeshEditor_i::translate(const SMESH::long_array & theIDsOfElements,
 {
   initData();
 
-  TIDSortedElemSet elements;
-  arrayToSet(theIDsOfElements, GetMeshDS(), elements);
-
   gp_Trsf aTrsf;
   const SMESH::PointStruct * P = &theVector.PS;
   aTrsf.SetTranslation( gp_Vec( P->x, P->y, P->z ));
 
   ::SMESH_MeshEditor anEditor( myMesh );
   ::SMESH_MeshEditor::PGroupIDs groupIds =
-      anEditor.Transform (elements, aTrsf, theCopy, theMakeGroups, theTargetMesh);
+      anEditor.Transform (theElements, aTrsf, theCopy, theMakeGroups, theTargetMesh);
 
   if(theCopy)
     storeResult(anEditor);
+  else
+    {
+      myMesh->GetMeshDS()->Modified();
+      myMesh->SetIsModified( true );
+    }
 
   return theMakeGroups ? getGroups(groupIds.get()) : 0;
 }
@@ -2972,10 +3147,12 @@ void SMESH_MeshEditor_i::Translate(const SMESH::long_array & theIDsOfElements,
                   << theVector << ", "
                   << theCopy << " )";
   }
-  translate(theIDsOfElements,
-            theVector,
-            theCopy,
-            false);
+  if ( theIDsOfElements.length() )
+  {
+    TIDSortedElemSet elements;
+    arrayToSet(theIDsOfElements, GetMeshDS(), elements);
+    translate(elements,theVector,theCopy,false);
+  }
 }
 
 //=======================================================================
@@ -2984,8 +3161,8 @@ void SMESH_MeshEditor_i::Translate(const SMESH::long_array & theIDsOfElements,
 //=======================================================================
 
 void SMESH_MeshEditor_i::TranslateObject(SMESH::SMESH_IDSource_ptr theObject,
-                                        const SMESH::DirStruct &  theVector,
-                                        CORBA::Boolean            theCopy)
+                                         const SMESH::DirStruct &  theVector,
+                                         CORBA::Boolean            theCopy)
 {
   if ( !myPreviewMode ) {
     TPythonDump() << this << ".TranslateObject( "
@@ -2993,11 +3170,9 @@ void SMESH_MeshEditor_i::TranslateObject(SMESH::SMESH_IDSource_ptr theObject,
                   << theVector << ", "
                   << theCopy << " )";
   }
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  translate(anElementsId,
-            theVector,
-            theCopy,
-            false);
+  TIDSortedElemSet elements;
+  if ( idSourceToSet(theObject, GetMeshDS(), elements, SMDSAbs_All, /*emptyIfIsMesh=*/1))
+    translate( elements, theVector, theCopy, false);
 }
 
 //=======================================================================
@@ -3009,7 +3184,13 @@ SMESH::ListOfGroups*
 SMESH_MeshEditor_i::TranslateMakeGroups(const SMESH::long_array& theIDsOfElements,
                                         const SMESH::DirStruct&  theVector)
 {
-  SMESH::ListOfGroups * aGroups = translate(theIDsOfElements,theVector,true,true);
+  SMESH::ListOfGroups * aGroups = 0;
+  if ( theIDsOfElements.length() )
+  {
+    TIDSortedElemSet elements;
+    arrayToSet(theIDsOfElements, GetMeshDS(), elements);
+    aGroups = translate(elements,theVector,true,true);
+  }
   if ( !myPreviewMode ) {
     TPythonDump aPythonDump;
     DumpGroupsList(aPythonDump,aGroups);
@@ -3029,9 +3210,11 @@ SMESH::ListOfGroups*
 SMESH_MeshEditor_i::TranslateObjectMakeGroups(SMESH::SMESH_IDSource_ptr theObject,
                                               const SMESH::DirStruct&   theVector)
 {
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  SMESH::ListOfGroups * aGroups = translate(anElementsId, theVector, true, true);
-  
+  SMESH::ListOfGroups * aGroups = 0;
+  TIDSortedElemSet elements;
+  if (idSourceToSet(theObject, GetMeshDS(), elements, SMDSAbs_All, /*emptyIfIsMesh=*/1))
+    aGroups = translate(elements, theVector, true, true);
+
   if ( !myPreviewMode ) {
 
     TPythonDump aPythonDump;
@@ -3056,21 +3239,23 @@ SMESH_MeshEditor_i::TranslateMakeMesh(const SMESH::long_array& theIDsOfElements,
 {
   SMESH_Mesh_i* mesh_i;
   SMESH::SMESH_Mesh_var mesh;
-  
+
   { // open new scope to dump "MakeMesh" command
     // and then "GetGroups" using SMESH_Mesh::GetGroups()
 
     TPythonDump pydump; // to prevent dump at mesh creation
-    
+
     mesh = makeMesh( theMeshName );
     mesh_i = SMESH::DownCast<SMESH_Mesh_i*>( mesh );
-    
-    if ( mesh_i ) {
-      translate(theIDsOfElements, theVector,
-                false, theCopyGroups, & mesh_i->GetImpl());
+
+    if ( mesh_i && theIDsOfElements.length() )
+    {
+      TIDSortedElemSet elements;
+      arrayToSet(theIDsOfElements, GetMeshDS(), elements);
+      translate(elements, theVector, false, theCopyGroups, & mesh_i->GetImpl());
       mesh_i->CreateGroupServants();
     }
-    
+
     if ( !myPreviewMode ) {
       pydump << mesh << " = " << this << ".TranslateMakeMesh( "
              << theIDsOfElements << ", "
@@ -3079,11 +3264,11 @@ SMESH_MeshEditor_i::TranslateMakeMesh(const SMESH::long_array& theIDsOfElements,
              << theMeshName << "' )";
     }
   }
-  
+
   //dump "GetGroups"
   if(!myPreviewMode && mesh_i)
     mesh_i->GetGroups();
-  
+
   return mesh._retn();
 }
 
@@ -3102,15 +3287,16 @@ SMESH_MeshEditor_i::TranslateObjectMakeMesh(SMESH::SMESH_IDSource_ptr theObject,
   SMESH::SMESH_Mesh_var mesh;
   { // open new scope to dump "MakeMesh" command
     // and then "GetGroups" using SMESH_Mesh::GetGroups()
-    
+
     TPythonDump pydump; // to prevent dump at mesh creation
     mesh = makeMesh( theMeshName );
     mesh_i = SMESH::DownCast<SMESH_Mesh_i*>( mesh );
-    
-    if ( mesh_i ) {
-      SMESH::long_array_var anElementsId = theObject->GetIDs();
-      translate(anElementsId, theVector,
-                false, theCopyGroups, & mesh_i->GetImpl());
+
+    TIDSortedElemSet elements;
+    if ( mesh_i &&
+      idSourceToSet(theObject, GetMeshDS(), elements, SMDSAbs_All, /*emptyIfIsMesh=*/1))
+    {
+      translate(elements, theVector,false, theCopyGroups, & mesh_i->GetImpl());
       mesh_i->CreateGroupServants();
     }
     if ( !myPreviewMode ) {
@@ -3121,11 +3307,11 @@ SMESH_MeshEditor_i::TranslateObjectMakeMesh(SMESH::SMESH_IDSource_ptr theObject,
              << theMeshName << "' )";
     }
   }
-  
+
   //dump "GetGroups"
   if(!myPreviewMode && mesh_i)
     mesh_i->GetGroups();
-  
+
   return mesh._retn();
 }
 
@@ -3135,7 +3321,7 @@ SMESH_MeshEditor_i::TranslateObjectMakeMesh(SMESH::SMESH_IDSource_ptr theObject,
 //=======================================================================
 
 SMESH::ListOfGroups*
-SMESH_MeshEditor_i::rotate(const SMESH::long_array & theIDsOfElements,
+SMESH_MeshEditor_i::rotate(TIDSortedElemSet &        theElements,
                            const SMESH::AxisStruct & theAxis,
                            CORBA::Double             theAngle,
                            CORBA::Boolean            theCopy,
@@ -3144,9 +3330,6 @@ SMESH_MeshEditor_i::rotate(const SMESH::long_array & theIDsOfElements,
 {
   initData();
 
-  TIDSortedElemSet elements;
-  arrayToSet(theIDsOfElements, GetMeshDS(), elements);
-
   gp_Pnt P ( theAxis.x, theAxis.y, theAxis.z );
   gp_Vec V ( theAxis.vx, theAxis.vy, theAxis.vz );
 
@@ -3155,11 +3338,16 @@ SMESH_MeshEditor_i::rotate(const SMESH::long_array & theIDsOfElements,
 
   ::SMESH_MeshEditor anEditor( myMesh );
   ::SMESH_MeshEditor::PGroupIDs groupIds =
-      anEditor.Transform (elements, aTrsf, theCopy, theMakeGroups, theTargetMesh);
+      anEditor.Transform (theElements, aTrsf, theCopy, theMakeGroups, theTargetMesh);
 
-  if(theCopy) {
+  if(theCopy) 
     storeResult(anEditor);
-  }
+  else
+    {
+      myMesh->GetMeshDS()->Modified();
+      myMesh->SetIsModified( true );
+    }
+
   return theMakeGroups ? getGroups(groupIds.get()) : 0;
 }
 
@@ -3180,11 +3368,12 @@ void SMESH_MeshEditor_i::Rotate(const SMESH::long_array & theIDsOfElements,
                   << theAngle << ", "
                   << theCopy << " )";
   }
-  rotate(theIDsOfElements,
-         theAxis,
-         theAngle,
-         theCopy,
-         false);
+  if ( theIDsOfElements.length() > 0 )
+  {
+    TIDSortedElemSet elements;
+    arrayToSet(theIDsOfElements, GetMeshDS(), elements);
+    rotate(elements,theAxis,theAngle,theCopy,false);
+  }
 }
 
 //=======================================================================
@@ -3193,9 +3382,9 @@ void SMESH_MeshEditor_i::Rotate(const SMESH::long_array & theIDsOfElements,
 //=======================================================================
 
 void SMESH_MeshEditor_i::RotateObject(SMESH::SMESH_IDSource_ptr theObject,
-                                     const SMESH::AxisStruct & theAxis,
-                                     CORBA::Double             theAngle,
-                                     CORBA::Boolean            theCopy)
+                                      const SMESH::AxisStruct & theAxis,
+                                      CORBA::Double             theAngle,
+                                      CORBA::Boolean            theCopy)
 {
   if ( !myPreviewMode ) {
     TPythonDump() << this << ".RotateObject( "
@@ -3204,12 +3393,9 @@ void SMESH_MeshEditor_i::RotateObject(SMESH::SMESH_IDSource_ptr theObject,
                   << theAngle << ", "
                   << theCopy << " )";
   }
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  rotate(anElementsId,
-         theAxis,
-         theAngle,
-         theCopy,
-         false);
+  TIDSortedElemSet elements;
+  if (idSourceToSet(theObject, GetMeshDS(), elements, SMDSAbs_All, /*emptyIfIsMesh=*/1))
+    rotate(elements,theAxis,theAngle,theCopy,false);
 }
 
 //=======================================================================
@@ -3222,13 +3408,19 @@ SMESH_MeshEditor_i::RotateMakeGroups(const SMESH::long_array& theIDsOfElements,
                                      const SMESH::AxisStruct& theAxis,
                                      CORBA::Double            theAngle)
 {
-  SMESH::ListOfGroups * aGroups =  rotate(theIDsOfElements,theAxis,theAngle,true,true);
+  SMESH::ListOfGroups * aGroups = 0;
+  if ( theIDsOfElements.length() > 0 )
+  {
+    TIDSortedElemSet elements;
+    arrayToSet(theIDsOfElements, GetMeshDS(), elements);
+    aGroups = rotate(elements,theAxis,theAngle,true,true);
+  }
   if ( !myPreviewMode ) {
     TPythonDump aPythonDump;
     DumpGroupsList(aPythonDump,aGroups);
     aPythonDump << this << ".RotateMakeGroups( "
                 << theIDsOfElements << ", "
-               << theAxis << ", "
+                << theAxis << ", "
                 << theAngle << " )";
   }
   return aGroups;
@@ -3244,16 +3436,18 @@ SMESH_MeshEditor_i::RotateObjectMakeGroups(SMESH::SMESH_IDSource_ptr theObject,
                                            const SMESH::AxisStruct&  theAxis,
                                            CORBA::Double             theAngle)
 {
-  SMESH::long_array_var anElementsId = theObject->GetIDs();
-  SMESH::ListOfGroups * aGroups =  rotate(anElementsId,theAxis,theAngle,true,true);
+  SMESH::ListOfGroups * aGroups = 0;
+  TIDSortedElemSet elements;
+  if ( idSourceToSet(theObject, GetMeshDS(), elements, SMDSAbs_All, /*emptyIfIsMesh=*/1))
+    aGroups =  rotate(elements,theAxis,theAngle,true,true);
+
   if ( !myPreviewMode ) {
     TPythonDump aPythonDump;
     DumpGroupsList(aPythonDump,aGroups);
     aPythonDump << this << ".RotateObjectMakeGroups( "
-               << theObject << ", "
-               << theAxis << ", "
-               << theAngle << " )";
+                << theObject << ", "
+                << theAxis << ", "
+                << theAngle << " )";
   }
   return aGroups;
 }
@@ -3275,14 +3469,17 @@ SMESH_MeshEditor_i::RotateMakeMesh(const SMESH::long_array& theIDsOfElements,
 
   { // open new scope to dump "MakeMesh" command
     // and then "GetGroups" using SMESH_Mesh::GetGroups()
-    
+
     TPythonDump pydump; // to prevent dump at mesh creation
 
     mesh = makeMesh( theMeshName );
     mesh_i = SMESH::DownCast<SMESH_Mesh_i*>( mesh );
-    
-    if ( mesh_i ) {
-      rotate(theIDsOfElements, theAxis, theAngleInRadians,
+
+    if ( mesh_i && theIDsOfElements.length() > 0 )
+    {
+      TIDSortedElemSet elements;
+      arrayToSet(theIDsOfElements, GetMeshDS(), elements);
+      rotate(elements, theAxis, theAngleInRadians,
              false, theCopyGroups, & mesh_i->GetImpl());
       mesh_i->CreateGroupServants();
     }
@@ -3295,11 +3492,11 @@ SMESH_MeshEditor_i::RotateMakeMesh(const SMESH::long_array& theIDsOfElements,
              << theMeshName << "' )";
     }
   }
-  
+
   //dump "GetGroups"
-  if(!myPreviewMode && mesh_i)
+  if(!myPreviewMode && mesh_i && theIDsOfElements.length() > 0 )
     mesh_i->GetGroups();
-  
+
   return mesh._retn();
 }
 
@@ -3308,7 +3505,7 @@ SMESH_MeshEditor_i::RotateMakeMesh(const SMESH::long_array& theIDsOfElements,
 //purpose  : 
 //=======================================================================
 
-SMESH::SMESH_Mesh_ptr 
+SMESH::SMESH_Mesh_ptr
 SMESH_MeshEditor_i::RotateObjectMakeMesh(SMESH::SMESH_IDSource_ptr theObject,
                                          const SMESH::AxisStruct&  theAxis,
                                          CORBA::Double             theAngleInRadians,
@@ -3317,17 +3514,19 @@ SMESH_MeshEditor_i::RotateObjectMakeMesh(SMESH::SMESH_IDSource_ptr theObject,
 {
   SMESH::SMESH_Mesh_var mesh;
   SMESH_Mesh_i* mesh_i;
-  
+
   {// open new scope to dump "MakeMesh" command
    // and then "GetGroups" using SMESH_Mesh::GetGroups()
-    
+
     TPythonDump pydump; // to prevent dump at mesh creation
     mesh = makeMesh( theMeshName );
     mesh_i = SMESH::DownCast<SMESH_Mesh_i*>( mesh );
-    
-    if (mesh_i ) {
-      SMESH::long_array_var anElementsId = theObject->GetIDs();
-      rotate(anElementsId, theAxis, theAngleInRadians,
+
+    TIDSortedElemSet elements;
+    if (mesh_i &&
+        idSourceToSet(theObject, GetMeshDS(), elements, SMDSAbs_All, /*emptyIfIsMesh=*/1))
+    {
+      rotate(elements, theAxis, theAngleInRadians,
              false, theCopyGroups, & mesh_i->GetImpl());
       mesh_i->CreateGroupServants();
     }
@@ -3340,14 +3539,152 @@ SMESH_MeshEditor_i::RotateObjectMakeMesh(SMESH::SMESH_IDSource_ptr theObject,
              << theMeshName << "' )";
     }
   }
-  
+
   //dump "GetGroups"
   if(!myPreviewMode && mesh_i)
     mesh_i->GetGroups();
-  
+
   return mesh._retn();
 }
 
+//=======================================================================
+//function : scale
+//purpose  : 
+//=======================================================================
+
+SMESH::ListOfGroups*
+SMESH_MeshEditor_i::scale(SMESH::SMESH_IDSource_ptr  theObject,
+                          const SMESH::PointStruct&  thePoint,
+                          const SMESH::double_array& theScaleFact,
+                          CORBA::Boolean             theCopy,
+                          const bool                 theMakeGroups,
+                          ::SMESH_Mesh*              theTargetMesh)
+{
+  initData();
+  if ( theScaleFact.length() < 1 )
+    THROW_SALOME_CORBA_EXCEPTION("Scale factor not given", SALOME::BAD_PARAM);
+  if ( theScaleFact.length() == 2 )
+    THROW_SALOME_CORBA_EXCEPTION("Invalid nb of scale factors : 2", SALOME::BAD_PARAM);
+
+  TIDSortedElemSet elements;
+  if ( !idSourceToSet(theObject, GetMeshDS(), elements, SMDSAbs_All, /*emptyIfIsMesh=*/true))
+    return 0;
+
+  vector<double> S(3);
+  S[0] = theScaleFact[0];
+  S[1] = (theScaleFact.length() == 1) ? theScaleFact[0] : theScaleFact[1];
+  S[2] = (theScaleFact.length() == 1) ? theScaleFact[0] : theScaleFact[2];
+  double tol = std::numeric_limits<double>::max();
+  gp_Trsf aTrsf;
+  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);
+
+  ::SMESH_MeshEditor anEditor( myMesh );
+  ::SMESH_MeshEditor::PGroupIDs groupIds =
+      anEditor.Transform (elements, aTrsf, theCopy, theMakeGroups, theTargetMesh);
+
+  if(theCopy)
+    storeResult(anEditor);
+  else
+    {
+      myMesh->GetMeshDS()->Modified();
+      myMesh->SetIsModified( true );
+    }
+  return theMakeGroups ? getGroups(groupIds.get()) : 0;
+}
+
+//=======================================================================
+//function : Scale
+//purpose  :
+//=======================================================================
+
+void SMESH_MeshEditor_i::Scale(SMESH::SMESH_IDSource_ptr  theObject,
+                               const SMESH::PointStruct&  thePoint,
+                               const SMESH::double_array& theScaleFact,
+                               CORBA::Boolean             theCopy)
+{
+  if ( !myPreviewMode ) {
+    TPythonDump() << this << ".Scale( "
+                  << theObject << ", "
+                  << "SMESH.PointStruct( "  << thePoint.x << ", "
+                  << thePoint.y << ", " << thePoint.z << " ) ,"
+                  << theScaleFact << ", "
+                  << theCopy << " )";
+  }
+  scale(theObject, thePoint, theScaleFact, theCopy, false);
+}
+
+
+//=======================================================================
+//function : ScaleMakeGroups
+//purpose  : 
+//=======================================================================
+
+SMESH::ListOfGroups*
+SMESH_MeshEditor_i::ScaleMakeGroups(SMESH::SMESH_IDSource_ptr  theObject,
+                                    const SMESH::PointStruct&  thePoint,
+                                    const SMESH::double_array& theScaleFact)
+{
+  SMESH::ListOfGroups * aGroups = scale(theObject, thePoint, theScaleFact, true, true);
+  if ( !myPreviewMode ) {
+
+    TPythonDump aPythonDump;
+    DumpGroupsList(aPythonDump,aGroups);
+    aPythonDump << this << ".Scale("
+                << theObject << ","
+                << "SMESH.PointStruct(" <<thePoint.x << ","
+                << thePoint.y << "," << thePoint.z << "),"
+                << theScaleFact << ",True,True)";
+  }
+  return aGroups;
+}
+
+
+//=======================================================================
+//function : ScaleMakeMesh
+//purpose  : 
+//=======================================================================
+
+SMESH::SMESH_Mesh_ptr
+SMESH_MeshEditor_i::ScaleMakeMesh(SMESH::SMESH_IDSource_ptr  theObject,
+                                  const SMESH::PointStruct&  thePoint,
+                                  const SMESH::double_array& theScaleFact,
+                                  CORBA::Boolean             theCopyGroups,
+                                  const char*                theMeshName)
+{
+  SMESH_Mesh_i* mesh_i;
+  SMESH::SMESH_Mesh_var mesh;
+  { // open new scope to dump "MakeMesh" command
+    // and then "GetGroups" using SMESH_Mesh::GetGroups()
+
+    TPythonDump pydump; // to prevent dump at mesh creation
+    mesh = makeMesh( theMeshName );
+    mesh_i = SMESH::DownCast<SMESH_Mesh_i*>( mesh );
+
+    if ( mesh_i )
+    {
+      scale(theObject, thePoint, theScaleFact,false, theCopyGroups, & mesh_i->GetImpl());
+      mesh_i->CreateGroupServants();
+    }
+    if ( !myPreviewMode )
+      pydump << mesh << " = " << this << ".ScaleMakeMesh( "
+             << theObject << ", "
+             << "SMESH.PointStruct( "  << thePoint.x << ", "
+             << thePoint.y << ", " << thePoint.z << " ) ,"
+             << theScaleFact << ", "
+             << theCopyGroups << ", '"
+             << theMeshName << "' )";
+  }
+
+  //dump "GetGroups"
+  if(!myPreviewMode && mesh_i)
+    mesh_i->GetGroups();
+
+  return mesh._retn();
+}
+
+
 //=======================================================================
 //function : FindCoincidentNodes
 //purpose  :
@@ -3360,7 +3697,7 @@ void SMESH_MeshEditor_i::FindCoincidentNodes (CORBA::Double                  Tol
 
   ::SMESH_MeshEditor::TListOfListOfNodes aListOfListOfNodes;
   ::SMESH_MeshEditor anEditor( myMesh );
-  set<const SMDS_MeshNode*> nodes; // no input nodes
+  TIDSortedNodeSet nodes; // no input nodes
   anEditor.FindCoincidentNodes( nodes, Tolerance, aListOfListOfNodes );
 
   GroupsOfNodes = new SMESH::array_of_long_array;
@@ -3387,42 +3724,20 @@ void SMESH_MeshEditor_i::FindCoincidentNodesOnPart(SMESH::SMESH_IDSource_ptr
                                                    SMESH::array_of_long_array_out GroupsOfNodes)
 {
   initData();
-  SMESH::long_array_var aElementsId = theObject->GetIDs();
 
-  SMESHDS_Mesh* aMesh = GetMeshDS();
-  set<const SMDS_MeshNode*> nodes;
+  TIDSortedNodeSet nodes;
+  idSourceToNodeSet( theObject, GetMeshDS(), nodes );
 
-  if ( !CORBA::is_nil(SMESH::SMESH_GroupBase::_narrow(theObject)) &&
-      SMESH::SMESH_GroupBase::_narrow(theObject)->GetType() == SMESH::NODE) {
-    for(int i = 0; i < aElementsId->length(); i++) {
-      CORBA::Long ind = aElementsId[i];
-      const SMDS_MeshNode * elem = aMesh->FindNode(ind);
-      if(elem)
-        nodes.insert(elem);
-    }
-  }
-  else {
-    for(int i = 0; i < aElementsId->length(); i++) {
-      CORBA::Long ind = aElementsId[i];
-      const SMDS_MeshElement * elem = aMesh->FindElement(ind);
-      if(elem) {
-        SMDS_ElemIteratorPtr nIt = elem->nodesIterator();
-        while ( nIt->more() )
-          nodes.insert( nodes.end(),static_cast<const SMDS_MeshNode*>(nIt->next()));
-      }
-    }
-  }
-    
-  
   ::SMESH_MeshEditor::TListOfListOfNodes aListOfListOfNodes;
   ::SMESH_MeshEditor anEditor( myMesh );
   if(!nodes.empty())
     anEditor.FindCoincidentNodes( nodes, Tolerance, aListOfListOfNodes );
-  
+
   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 ];
@@ -3435,6 +3750,55 @@ void SMESH_MeshEditor_i::FindCoincidentNodesOnPart(SMESH::SMESH_IDSource_ptr
                 << Tolerance << " )";
 }
 
+//================================================================================
+/*!
+ * \brief Finds nodes coinsident with Tolerance within Object excluding nodes within
+ *        ExceptSubMeshOrGroups
+ */
+//================================================================================
+
+void SMESH_MeshEditor_i::
+FindCoincidentNodesOnPartBut(SMESH::SMESH_IDSource_ptr      theObject,
+                             CORBA::Double                  theTolerance,
+                             SMESH::array_of_long_array_out theGroupsOfNodes,
+                             const SMESH::ListOfIDSources&  theExceptSubMeshOrGroups)
+{
+  initData();
+
+  TIDSortedNodeSet nodes;
+  idSourceToNodeSet( theObject, GetMeshDS(), nodes );
+
+  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 );
+  }
+  ::SMESH_MeshEditor::TListOfListOfNodes aListOfListOfNodes;
+  ::SMESH_MeshEditor anEditor( myMesh );
+  if(!nodes.empty())
+    anEditor.FindCoincidentNodes( nodes, theTolerance, aListOfListOfNodes );
+
+  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 << " )";
+}
+
 //=======================================================================
 //function : MergeNodes
 //purpose  :
@@ -3471,6 +3835,8 @@ void SMESH_MeshEditor_i::MergeNodes (const SMESH::array_of_long_array& GroupsOfN
   anEditor.MergeNodes( aListOfListOfNodes );
 
   aTPythonDump <<  "])";
+  myMesh->GetMeshDS()->Modified();
+  myMesh->SetIsModified( true );
 }
 
 //=======================================================================
@@ -3478,11 +3844,13 @@ void SMESH_MeshEditor_i::MergeNodes (const SMESH::array_of_long_array& GroupsOfN
 //purpose  :
 //=======================================================================
 void SMESH_MeshEditor_i::FindEqualElements(SMESH::SMESH_IDSource_ptr      theObject,
-                                          SMESH::array_of_long_array_out GroupsOfElementsID)
+                                           SMESH::array_of_long_array_out GroupsOfElementsID)
 {
   initData();
-  if ( !(!CORBA::is_nil(SMESH::SMESH_GroupBase::_narrow(theObject)) &&
-        SMESH::SMESH_GroupBase::_narrow(theObject)->GetType() == SMESH::NODE) ) {
+
+  SMESH::SMESH_GroupBase_var group = SMESH::SMESH_GroupBase::_narrow(theObject);
+  if ( !(!group->_is_nil() && group->GetType() == SMESH::NODE) )
+  {
     typedef list<int> TListOfIDs;
     set<const SMDS_MeshElement*> elems;
     SMESH::long_array_var aElementsId = theObject->GetIDs();
@@ -3492,7 +3860,7 @@ void SMESH_MeshEditor_i::FindEqualElements(SMESH::SMESH_IDSource_ptr      theObj
       CORBA::Long anID = aElementsId[i];
       const SMDS_MeshElement * elem = aMesh->FindElement(anID);
       if (elem) {
-       elems.insert(elem);
+        elems.insert(elem);
       }
     }
 
@@ -3510,12 +3878,12 @@ void SMESH_MeshEditor_i::FindEqualElements(SMESH::SMESH_IDSource_ptr      theObj
       aGroup.length( listOfIDs.size() );
       TListOfIDs::iterator idIt = listOfIDs.begin();
       for (int k = 0; idIt != listOfIDs.end(); ++idIt, ++k ) {
-       aGroup[ k ] = *idIt;
+        aGroup[ k ] = *idIt;
       }
     }
 
-  TPythonDump() << "equal_elements = " << this << ".FindEqualElements( "
-                <<theObject<<" )";
+    TPythonDump() << "equal_elements = " << this << ".FindEqualElements( "
+                  <<theObject<<" )";
   }
 }
 
@@ -3549,6 +3917,8 @@ void SMESH_MeshEditor_i::MergeElements(const SMESH::array_of_long_array& GroupsO
 
   ::SMESH_MeshEditor anEditor( myMesh );
   anEditor.MergeElements(aListOfListOfElementsID);
+  myMesh->GetMeshDS()->Modified();
+  myMesh->SetIsModified( true );
 
   aTPythonDump << "] )";
 }
@@ -3588,14 +3958,39 @@ CORBA::Boolean SMESH_MeshEditor_i::MoveNode(CORBA::Long   NodeID,
   if ( theNodeSearcher )
     theSearchersDeleter.Set( myMesh ); // remove theNodeSearcher if mesh is other
 
-  if ( theNodeSearcher ) // move node and update theNodeSearcher data accordingly
+  if ( myPreviewMode ) // make preview data
+  {
+    // in a preview mesh, make edges linked to a node
+    TPreviewMesh tmpMesh;
+    TIDSortedElemSet linkedNodes;
+    ::SMESH_MeshEditor::GetLinkedNodes( node, linkedNodes );
+    TIDSortedElemSet::iterator nIt = linkedNodes.begin();
+    SMDS_MeshNode *nodeCpy1 = tmpMesh.Copy(node);
+    for ( ; nIt != linkedNodes.end(); ++nIt )
+    {
+      SMDS_MeshNode *nodeCpy2 = tmpMesh.Copy ( cast2Node( *nIt ));
+      tmpMesh.GetMeshDS()->AddEdge(nodeCpy1, nodeCpy2);
+    }
+    // move copied node
+    if ( nodeCpy1 )
+      tmpMesh.GetMeshDS()->MoveNode(nodeCpy1, x, y, z);
+    // fill preview data
+    ::SMESH_MeshEditor anEditor( & tmpMesh );
+    storeResult( anEditor );
+  }
+  else if ( theNodeSearcher ) // move node and update theNodeSearcher data accordingly
     theNodeSearcher->MoveNode(node, gp_Pnt( x,y,z ));
   else
     GetMeshDS()->MoveNode(node, x, y, z);
 
-  // Update Python script
-  TPythonDump() << "isDone = " << this << ".MoveNode( "
-                << NodeID << ", " << x << ", " << y << ", " << z << " )";
+  if ( !myPreviewMode )
+  {
+    // Update Python script
+    TPythonDump() << "isDone = " << this << ".MoveNode( "
+                  << NodeID << ", " << x << ", " << y << ", " << z << " )";
+    myMesh->GetMeshDS()->Modified();
+    myMesh->SetIsModified( true );
+  }
 
   return true;
 }
@@ -3665,7 +4060,7 @@ CORBA::Long SMESH_MeshEditor_i::MoveClosestNodeToPoint(CORBA::Double x,
       TIDSortedElemSet::iterator nIt = linkedNodes.begin();
       for ( ; nIt != linkedNodes.end(); ++nIt )
       {
-        SMDS_MeshEdge edge( node, cast2Node( *nIt ));
+        SMDS_LinearEdge edge( node, cast2Node( *nIt ));
         tmpMesh.Copy( &edge );
       }
       // move copied node
@@ -3686,10 +4081,14 @@ CORBA::Long SMESH_MeshEditor_i::MoveClosestNodeToPoint(CORBA::Double x,
     }
   }
 
-  if ( !myPreviewMode ) {
+  if ( !myPreviewMode )
+  {
     TPythonDump() << "nodeID = " << this
                   << ".MoveClosestNodeToPoint( "<< x << ", " << y << ", " << z
                   << ", " << nodeID << " )";
+
+    myMesh->GetMeshDS()->Modified();
+    myMesh->SetIsModified( true );
   }
 
   return nodeID;
@@ -3733,6 +4132,24 @@ SMESH::long_array* SMESH_MeshEditor_i::FindElementsByPoint(CORBA::Double      x,
   return res._retn();
 }
 
+//=======================================================================
+//function : GetPointState
+//purpose  : Return point state in a closed 2D mesh in terms of TopAbs_State enumeration.
+//           TopAbs_UNKNOWN state means that either mesh is wrong or the analysis fails.
+//=======================================================================
+
+CORBA::Short SMESH_MeshEditor_i::GetPointState(CORBA::Double x,
+                                               CORBA::Double y,
+                                               CORBA::Double z)
+{
+  theSearchersDeleter.Set( myMesh );
+  if ( !theElementSearcher ) {
+    ::SMESH_MeshEditor anEditor( myMesh );
+    theElementSearcher = anEditor.GetElementSearcher();
+  }
+  return CORBA::Short( theElementSearcher->GetPointState( gp_Pnt( x,y,z )));
+}
+
 //=======================================================================
 //function : convError
 //purpose  :
@@ -3743,16 +4160,16 @@ SMESH::long_array* SMESH_MeshEditor_i::FindElementsByPoint(CORBA::Double      x,
 static SMESH::SMESH_MeshEditor::Sew_Error convError( const::SMESH_MeshEditor::Sew_Error e )
 {
   switch ( e ) {
-  RETCASE( SEW_OK );
-  RETCASE( SEW_BORDER1_NOT_FOUND );
-  RETCASE( SEW_BORDER2_NOT_FOUND );
-  RETCASE( SEW_BOTH_BORDERS_NOT_FOUND );
-  RETCASE( SEW_BAD_SIDE_NODES );
-  RETCASE( SEW_VOLUMES_TO_SPLIT );
-  RETCASE( SEW_DIFF_NB_OF_ELEMENTS );
-  RETCASE( SEW_TOPO_DIFF_SETS_OF_ELEMENTS );
-  RETCASE( SEW_BAD_SIDE1_NODES );
-  RETCASE( SEW_BAD_SIDE2_NODES );
+    RETCASE( SEW_OK );
+    RETCASE( SEW_BORDER1_NOT_FOUND );
+    RETCASE( SEW_BORDER2_NOT_FOUND );
+    RETCASE( SEW_BOTH_BORDERS_NOT_FOUND );
+    RETCASE( SEW_BAD_SIDE_NODES );
+    RETCASE( SEW_VOLUMES_TO_SPLIT );
+    RETCASE( SEW_DIFF_NB_OF_ELEMENTS );
+    RETCASE( SEW_TOPO_DIFF_SETS_OF_ELEMENTS );
+    RETCASE( SEW_BAD_SIDE1_NODES );
+    RETCASE( SEW_BAD_SIDE2_NODES );
   }
   return SMESH::SMESH_MeshEditor::SEW_OK;
 }
@@ -3763,14 +4180,14 @@ static SMESH::SMESH_MeshEditor::Sew_Error convError( const::SMESH_MeshEditor::Se
 //=======================================================================
 
 SMESH::SMESH_MeshEditor::Sew_Error
-  SMESH_MeshEditor_i::SewFreeBorders(CORBA::Long FirstNodeID1,
-                                     CORBA::Long SecondNodeID1,
-                                     CORBA::Long LastNodeID1,
-                                     CORBA::Long FirstNodeID2,
-                                     CORBA::Long SecondNodeID2,
-                                     CORBA::Long LastNodeID2,
-                                     CORBA::Boolean CreatePolygons,
-                                     CORBA::Boolean CreatePolyedrs)
+SMESH_MeshEditor_i::SewFreeBorders(CORBA::Long FirstNodeID1,
+                                   CORBA::Long SecondNodeID1,
+                                   CORBA::Long LastNodeID1,
+                                   CORBA::Long FirstNodeID2,
+                                   CORBA::Long SecondNodeID2,
+                                   CORBA::Long LastNodeID2,
+                                   CORBA::Boolean CreatePolygons,
+                                   CORBA::Boolean CreatePolyedrs)
 {
   initData();
 
@@ -3816,6 +4233,9 @@ SMESH::SMESH_MeshEditor::Sew_Error
 
   storeResult(anEditor);
 
+  myMesh->GetMeshDS()->Modified();
+  myMesh->SetIsModified( true );
+
   return error;
 }
 
@@ -3871,6 +4291,9 @@ SMESH_MeshEditor_i::SewConformFreeBorders(CORBA::Long FirstNodeID1,
 
   storeResult(anEditor);
 
+  myMesh->GetMeshDS()->Modified();
+  myMesh->SetIsModified( true );
+
   return error;
 }
 
@@ -3931,6 +4354,9 @@ SMESH_MeshEditor_i::SewBorderToSide(CORBA::Long FirstNodeIDOnFreeBorder,
 
   storeResult(anEditor);
 
+  myMesh->GetMeshDS()->Modified();
+  myMesh->SetIsModified( true );
+
   return error;
 }
 
@@ -3986,15 +4412,18 @@ SMESH_MeshEditor_i::SewSideElements(const SMESH::long_array& IDsOfSide1Elements,
 
   storeResult(anEditor);
 
+  myMesh->GetMeshDS()->Modified();
+  myMesh->SetIsModified( true );
+
   return error;
 }
 
 //================================================================================
 /*!
  * \brief Set new nodes for given element
 * \param ide - element id
 * \param newIDs - new node ids
 * \retval CORBA::Boolean - true if result is OK
+ * \param ide - element id
+ * \param newIDs - new node ids
+ * \retval CORBA::Boolean - true if result is OK
  */
 //================================================================================
 
@@ -4019,17 +4448,21 @@ CORBA::Boolean SMESH_MeshEditor_i::ChangeElemNodes(CORBA::Long ide,
   }
   TPythonDump() << "isDone = " << this << ".ChangeElemNodes( "
                 << ide << ", " << newIDs << " )";
-#ifdef _DEBUG_
-  TPythonDump() << "print 'ChangeElemNodes: ', isDone";
-#endif
 
-  return GetMeshDS()->ChangeElementNodes( elem, & aNodes[0], nbn1+1 );
+  MESSAGE("ChangeElementNodes");
+  bool res = GetMeshDS()->ChangeElementNodes( elem, & aNodes[0], nbn1+1 );
+
+  myMesh->GetMeshDS()->Modified();
+  if ( res )
+    myMesh->SetIsModified( true );
+
+  return res;
 }
-  
+
 //================================================================================
 /*!
  * \brief Update myLastCreated* or myPreviewData
 * \param anEditor - it contains last modification results
+ * \param anEditor - it contains last modification results
  */
 //================================================================================
 
@@ -4087,8 +4520,8 @@ void SMESH_MeshEditor_i::storeResult(::SMESH_MeshEditor& anEditor)
       /*if (aMeshElem->GetType() == SMDSAbs_Volume) {
         aType = SMDSAbs_Node;
         isPoly = false;
-      }
-      else*/ {
+        }
+        else*/ {
         aType = aMeshElem->GetType();
         isPoly = aMeshElem->IsPoly();
       }
@@ -4106,7 +4539,7 @@ void SMESH_MeshEditor_i::storeResult(::SMESH_MeshEditor& anEditor)
     myPreviewData->elementConnectivities.length(aNodesConnectivity.size());
     for( int i = 0; aConnIter != aNodesConnectivity.end(); aConnIter++, i++ )
       myPreviewData->elementConnectivities[i] = *aConnIter;
-    
+
     return;
   }
 
@@ -4140,7 +4573,7 @@ SMESH::MeshPreviewStruct* SMESH_MeshEditor_i::GetPreviewData()
 //================================================================================
 /*!
  * \brief Returns list of it's IDs of created nodes
 * \retval SMESH::long_array* - list of node ID
+ * \retval SMESH::long_array* - list of node ID
  */
 //================================================================================
 
@@ -4152,7 +4585,7 @@ SMESH::long_array* SMESH_MeshEditor_i::GetLastCreatedNodes()
 //================================================================================
 /*!
  * \brief Returns list of it's IDs of created elements
 * \retval SMESH::long_array* - list of elements' ID
+ * \retval SMESH::long_array* - list of elements' ID
  */
 //================================================================================
 
@@ -4171,6 +4604,8 @@ void SMESH_MeshEditor_i::ConvertToQuadratic(CORBA::Boolean theForce3d)
   ::SMESH_MeshEditor anEditor( myMesh );
   anEditor.ConvertToQuadratic(theForce3d);
   TPythonDump() << this << ".ConvertToQuadratic( " << theForce3d << " )";
+  myMesh->GetMeshDS()->Modified();
+  myMesh->SetIsModified( true );
 }
 
 //=======================================================================
@@ -4183,6 +4618,9 @@ CORBA::Boolean SMESH_MeshEditor_i::ConvertFromQuadratic()
   ::SMESH_MeshEditor anEditor( myMesh );
   CORBA::Boolean isDone = anEditor.ConvertFromQuadratic();
   TPythonDump() << this << ".ConvertFromQuadratic()";
+  myMesh->GetMeshDS()->Modified();
+  if ( isDone )
+    myMesh->SetIsModified( true );
   return isDone;
 }
 
@@ -4216,23 +4654,271 @@ void SMESH_MeshEditor_i::DumpGroupsList(TPythonDump &               theDumpPytho
   }
 }
 
+//================================================================================
+/*!
+  \brief Generates the unique group name.
+  \param thePrefix name prefix
+  \return unique name
+*/
+//================================================================================
+string SMESH_MeshEditor_i::generateGroupName(const string& thePrefix)
+{
+  SMESH::ListOfGroups_var groups = myMesh_i->GetGroups();
+  set<string> groupNames;
+  
+  // Get existing group names
+  for (int i = 0, nbGroups = groups->length(); i < nbGroups; i++ ) {
+    SMESH::SMESH_GroupBase_var aGroup = groups[i];
+    if (CORBA::is_nil(aGroup))
+      continue;
+
+    groupNames.insert(aGroup->GetName());
+  }
+
+  // Find new name
+  string name = thePrefix;
+  int index = 0;
+
+  while (!groupNames.insert(name).second) {
+    if (index == 0) {
+      name += "_1";
+    }
+    else {
+      TCollection_AsciiString nbStr(index+1);
+      name.resize( name.rfind('_')+1 );
+      name += nbStr.ToCString();
+    }
+    ++index;
+  }
+  
+  return name;
+}
+
+//================================================================================
+/*!
+  \brief Creates a hole in a mesh by doubling the nodes of some particular elements
+  \param theNodes - identifiers of nodes to be doubled
+  \param theModifiedElems - identifiers of elements to be updated by the new (doubled) 
+         nodes. If list of element identifiers is empty then nodes are doubled but 
+         they not assigned to elements
+  \return TRUE if operation has been completed successfully, FALSE otherwise
+  \sa DoubleNode(), DoubleNodeGroup(), DoubleNodeGroups()
+*/
+//================================================================================
+
+CORBA::Boolean SMESH_MeshEditor_i::DoubleNodes( const SMESH::long_array& theNodes, 
+                                                const SMESH::long_array& theModifiedElems )
+{
+  initData();
+
+  ::SMESH_MeshEditor aMeshEditor( myMesh );
+  list< int > aListOfNodes;
+  int i, n;
+  for ( i = 0, n = theNodes.length(); i < n; i++ )
+    aListOfNodes.push_back( theNodes[ i ] );
+
+  list< int > aListOfElems;
+  for ( i = 0, n = theModifiedElems.length(); i < n; i++ )
+    aListOfElems.push_back( theModifiedElems[ i ] );
+
+  bool aResult = aMeshEditor.DoubleNodes( aListOfNodes, aListOfElems );
+
+  myMesh->GetMeshDS()->Modified();
+  storeResult( aMeshEditor) ;
+  if ( aResult )
+    myMesh->SetIsModified( true );
+
+  // Update Python script
+  TPythonDump() << this << ".DoubleNodes( " << theNodes << ", "<< theModifiedElems << " )";
+
+  return aResult;
+}
+
+//================================================================================
+/*!
+  \brief Creates a hole in a mesh by doubling the nodes of some particular elements
+  This method provided for convenience works as DoubleNodes() described above.
+  \param theNodeId - identifier of node to be doubled.
+  \param theModifiedElems - identifiers of elements to be updated.
+  \return TRUE if operation has been completed successfully, FALSE otherwise
+  \sa DoubleNodes(), DoubleNodeGroup(), DoubleNodeGroups()
+*/
+//================================================================================
+
+CORBA::Boolean SMESH_MeshEditor_i::DoubleNode( CORBA::Long              theNodeId, 
+                                               const SMESH::long_array& theModifiedElems )
+{
+  SMESH::long_array_var aNodes = new SMESH::long_array;
+  aNodes->length( 1 );
+  aNodes[ 0 ] = theNodeId;
+
+  TPythonDump pyDump; // suppress dump by the next line
+
+  CORBA::Boolean done = DoubleNodes( aNodes, theModifiedElems );
+
+  pyDump << this << ".DoubleNode( " << theNodeId << ", " << theModifiedElems << " )";
+
+  return done;
+}
+
+//================================================================================
+/*!
+  \brief Creates a hole in a mesh by doubling the nodes of some particular elements
+  This method provided for convenience works as DoubleNodes() described above.
+  \param theNodes - group of nodes to be doubled.
+  \param theModifiedElems - group of elements to be updated.
+  \return TRUE if operation has been completed successfully, FALSE otherwise
+  \sa DoubleNode(), DoubleNodes(), DoubleNodeGroups()
+*/
+//================================================================================
+
+CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeGroup(SMESH::SMESH_GroupBase_ptr theNodes,
+                                                   SMESH::SMESH_GroupBase_ptr theModifiedElems )
+{
+  if ( CORBA::is_nil( theNodes ) && theNodes->GetType() != SMESH::NODE )
+    return false;
+
+  SMESH::long_array_var aNodes = theNodes->GetListOfID();
+  SMESH::long_array_var aModifiedElems;
+  if ( !CORBA::is_nil( theModifiedElems ) )
+    aModifiedElems = theModifiedElems->GetListOfID();
+  else 
+  {
+    aModifiedElems = new SMESH::long_array;
+    aModifiedElems->length( 0 );
+  }
+
+  TPythonDump pyDump; // suppress dump by the next line
+
+  bool done = DoubleNodes( aNodes, aModifiedElems );
+
+  pyDump << this << ".DoubleNodeGroup( " << theNodes << ", " << theModifiedElems << " )";
+
+  return done;
+}
+
+/*!
+ * \brief Creates a hole in a mesh by doubling the nodes of some particular elements.
+ * Works as DoubleNodeGroup(), but returns a new group with newly created nodes.
+ * \param theNodes - group of nodes to be doubled.
+ * \param theModifiedElems - group of elements to be updated.
+ * \return a new group with newly created nodes
+ * \sa DoubleNodeGroup()
+ */
+SMESH::SMESH_Group_ptr SMESH_MeshEditor_i::DoubleNodeGroupNew( SMESH::SMESH_GroupBase_ptr theNodes,
+                                                               SMESH::SMESH_GroupBase_ptr theModifiedElems )
+{
+  if ( CORBA::is_nil( theNodes ) && theNodes->GetType() != SMESH::NODE )
+    return false;
+  
+  SMESH::SMESH_Group_var aNewGroup;
+
+  // Duplicate nodes
+  SMESH::long_array_var aNodes = theNodes->GetListOfID();
+  SMESH::long_array_var aModifiedElems;
+  if ( !CORBA::is_nil( theModifiedElems ) )
+    aModifiedElems = theModifiedElems->GetListOfID();
+  else {
+    aModifiedElems = new SMESH::long_array;
+    aModifiedElems->length( 0 );
+  }
+  
+  TPythonDump pyDump; // suppress dump by the next line
+
+  bool aResult = DoubleNodes( aNodes, aModifiedElems );
+
+  if ( aResult )
+  {
+    // Create group with newly created nodes
+    SMESH::long_array_var anIds = GetLastCreatedNodes();
+    if (anIds->length() > 0) {
+      string anUnindexedName (theNodes->GetName());
+      string aNewName = generateGroupName(anUnindexedName + "_double");
+      aNewGroup = myMesh_i->CreateGroup(SMESH::NODE, aNewName.c_str());
+      aNewGroup->Add(anIds);
+    }
+  }
+  
+  pyDump << "createdNodes = " << this << ".DoubleNodeGroupNew( " << theNodes << ", "
+    << theModifiedElems << " )";
+
+  return aNewGroup._retn();
+}
+
+//================================================================================
+/*!
+  \brief Creates a hole in a mesh by doubling the nodes of some particular elements
+  This method provided for convenience works as DoubleNodes() described above.
+  \param theNodes - list of groups of nodes to be doubled
+  \param theModifiedElems - list of groups of elements to be updated.
+  \return TRUE if operation has been completed successfully, FALSE otherwise
+  \sa DoubleNode(), DoubleNodeGroup(), DoubleNodes()
+*/
+//================================================================================
+
+CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeGroups(const SMESH::ListOfGroups& theNodes,
+                                                    const SMESH::ListOfGroups& theModifiedElems )
+{
+  initData();
+
+  ::SMESH_MeshEditor aMeshEditor( myMesh );
+
+  std::list< int > aNodes;
+  int i, n, j, m;
+  for ( i = 0, n = theNodes.length(); i < n; i++ )
+  {
+    SMESH::SMESH_GroupBase_var aGrp = theNodes[ i ];
+    if ( !CORBA::is_nil( aGrp ) && aGrp->GetType() == SMESH::NODE )
+    {
+      SMESH::long_array_var aCurr = aGrp->GetListOfID();
+      for ( j = 0, m = aCurr->length(); j < m; j++ )
+        aNodes.push_back( aCurr[ j ] );
+    }
+  }
+
+  std::list< int > anElems;
+  for ( i = 0, n = theModifiedElems.length(); i < n; i++ )
+  {
+    SMESH::SMESH_GroupBase_var aGrp = theModifiedElems[ i ];
+    if ( !CORBA::is_nil( aGrp ) && aGrp->GetType() != SMESH::NODE )
+    {
+      SMESH::long_array_var aCurr = aGrp->GetListOfID();
+      for ( j = 0, m = aCurr->length(); j < m; j++ )
+        anElems.push_back( aCurr[ j ] );
+    }
+  }
+
+  bool aResult = aMeshEditor.DoubleNodes( aNodes, anElems );
+
+  storeResult( aMeshEditor) ;
+
+  myMesh->GetMeshDS()->Modified();
+  if ( aResult )
+    myMesh->SetIsModified( true );
+
+
+  TPythonDump() << this << ".DoubleNodeGroups( " << theNodes << ", " << theModifiedElems << " )";
+
+  return aResult;
+}
+
 //================================================================================
 /*!
   \brief Creates a hole in a mesh by doubling the nodes of some particular elements
   \param theElems - the list of elements (edges or faces) to be replicated
-        The nodes for duplication could be found from these elements
+  The nodes for duplication could be found from these elements
   \param theNodesNot - list of nodes to NOT replicate
   \param theAffectedElems - the list of elements (cells and edges) to which the 
-        replicated nodes should be associated to.
+  replicated nodes should be associated to.
   \return TRUE if operation has been completed successfully, FALSE otherwise
   \sa DoubleNodeGroup(), DoubleNodeGroups()
 */
 //================================================================================
 
-CORBA::Boolean SMESH_MeshEditor_i::DoubleNodes( const SMESH::long_array& theElems, 
-                                                const SMESH::long_array& theNodesNot,
-                                                const SMESH::long_array& theAffectedElems )
+CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeElem( const SMESH::long_array& theElems, 
+                                                   const SMESH::long_array& theNodesNot,
+                                                   const SMESH::long_array& theAffectedElems )
+
 {
   initData();
 
@@ -4248,6 +4934,13 @@ CORBA::Boolean SMESH_MeshEditor_i::DoubleNodes( const SMESH::long_array& theElem
 
   storeResult( aMeshEditor) ;
 
+  myMesh->GetMeshDS()->Modified();
+  if ( aResult )
+    myMesh->SetIsModified( true );
+
+  // Update Python script
+  TPythonDump() << this << ".DoubleNodeElem( " << theElems << ", "
+                << theNodesNot << ", " << theAffectedElems << " )";
   return aResult;
 }
 
@@ -4255,21 +4948,20 @@ CORBA::Boolean SMESH_MeshEditor_i::DoubleNodes( const SMESH::long_array& theElem
 /*!
   \brief Creates a hole in a mesh by doubling the nodes of some particular elements
   \param theElems - the list of elements (edges or faces) to be replicated
-        The nodes for duplication could be found from these elements
+  The nodes for duplication could be found from these elements
   \param theNodesNot - list of nodes to NOT replicate
   \param theShape - shape to detect affected elements (element which geometric center
-         located on or inside shape).
-         The replicated nodes should be associated to affected elements.
+  located on or inside shape).
+  The replicated nodes should be associated to affected elements.
   \return TRUE if operation has been completed successfully, FALSE otherwise
   \sa DoubleNodeGroupInRegion(), DoubleNodeGroupsInRegion()
 */
 //================================================================================
 
-CORBA::Boolean SMESH_MeshEditor_i::DoubleNodesInRegion
-  ( const SMESH::long_array& theElems, 
-    const SMESH::long_array& theNodesNot,
-    GEOM::GEOM_Object_ptr    theShape )
+CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeElemInRegion ( const SMESH::long_array& theElems, 
+                                                            const SMESH::long_array& theNodesNot,
+                                                            GEOM::GEOM_Object_ptr    theShape )
+
 {
   initData();
 
@@ -4285,6 +4977,13 @@ CORBA::Boolean SMESH_MeshEditor_i::DoubleNodesInRegion
 
   storeResult( aMeshEditor) ;
 
+  myMesh->GetMeshDS()->Modified();
+  if ( aResult )
+    myMesh->SetIsModified( true );
+
+  // Update Python script
+  TPythonDump() << "isDone = " << this << ".DoubleNodeElemInRegion( " << theElems << ", "
+                << theNodesNot << ", " << theShape << " )";
   return aResult;
 }
 
@@ -4294,48 +4993,95 @@ CORBA::Boolean SMESH_MeshEditor_i::DoubleNodesInRegion
   \param theElems - group of of elements (edges or faces) to be replicated
   \param theNodesNot - group of nodes not to replicated
   \param theAffectedElems - group of elements to which the replicated nodes
-         should be associated to.
+  should be associated to.
   \return TRUE if operation has been completed successfully, FALSE otherwise
   \sa DoubleNodes(), DoubleNodeGroups()
 */
 //================================================================================
 
-static void groupToSet(SMESH::SMESH_GroupBase_ptr theGrp,
-                       SMESHDS_Mesh*              theMeshDS,
-                       TIDSortedElemSet&          theElemSet,
-                       const SMDSAbs_ElementType  theType)
+CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeElemGroup(SMESH::SMESH_GroupBase_ptr theElems,
+                                                       SMESH::SMESH_GroupBase_ptr theNodesNot,
+                                                       SMESH::SMESH_GroupBase_ptr theAffectedElems)
 {
-  if ( CORBA::is_nil( theGrp ) )
-    return;
-  SMESH::long_array_var anIDs = theGrp->GetIDs();
-  arrayToSet( anIDs, theMeshDS, theElemSet, theType);
-}
+  if ( CORBA::is_nil( theElems ) && theElems->GetType() == SMESH::NODE )
+    return false;
+
+  initData();
+
+  ::SMESH_MeshEditor aMeshEditor( myMesh );
+
+  SMESHDS_Mesh* aMeshDS = GetMeshDS();
+  TIDSortedElemSet anElems, aNodes, anAffected;
+  idSourceToSet( theElems, aMeshDS, anElems, SMDSAbs_All ); 
+  idSourceToSet( theNodesNot, aMeshDS, aNodes, SMDSAbs_Node ); 
+  idSourceToSet( theAffectedElems, aMeshDS, anAffected, SMDSAbs_All );
+
+  bool aResult = aMeshEditor.DoubleNodes( anElems, aNodes, anAffected );
+
+  storeResult( aMeshEditor) ;
+
+  myMesh->GetMeshDS()->Modified();
+  if ( aResult )
+    myMesh->SetIsModified( true );
 
-CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeGroup( 
-  SMESH::SMESH_GroupBase_ptr theElems,
-  SMESH::SMESH_GroupBase_ptr theNodesNot,
-  SMESH::SMESH_GroupBase_ptr theAffectedElems )
+  // Update Python script
+  TPythonDump() << "isDone = " << this << ".DoubleNodeElemGroup( " << theElems << ", "
+                << theNodesNot << ", " << theAffectedElems << " )";
+  return aResult;
+}
 
+/*!
+ * \brief Creates a hole in a mesh by doubling the nodes of some particular elements
+ * Works as DoubleNodeElemGroup(), but returns a new group with newly created elements.
+ * \param theElems - group of of elements (edges or faces) to be replicated
+ * \param theNodesNot - group of nodes not to replicated
+ * \param theAffectedElems - group of elements to which the replicated nodes
+ *        should be associated to.
+ * \return a new group with newly created elements
+ * \sa DoubleNodeElemGroup()
+ */
+SMESH::SMESH_Group_ptr SMESH_MeshEditor_i::DoubleNodeElemGroupNew(SMESH::SMESH_GroupBase_ptr theElems,
+                                                                  SMESH::SMESH_GroupBase_ptr theNodesNot,
+                                                                  SMESH::SMESH_GroupBase_ptr theAffectedElems)
 {
   if ( CORBA::is_nil( theElems ) && theElems->GetType() == SMESH::NODE )
     return false;
-  
+
+  SMESH::SMESH_Group_var aNewGroup;
+
   initData();
 
   ::SMESH_MeshEditor aMeshEditor( myMesh );
 
   SMESHDS_Mesh* aMeshDS = GetMeshDS();
   TIDSortedElemSet anElems, aNodes, anAffected;
-  groupToSet( theElems, aMeshDS, anElems, SMDSAbs_All ); 
-  groupToSet( theNodesNot, aMeshDS, aNodes, SMDSAbs_Node ); 
-  groupToSet( theAffectedElems, aMeshDS, anAffected, SMDSAbs_All );
+  idSourceToSet( theElems, aMeshDS, anElems, SMDSAbs_All ); 
+  idSourceToSet( theNodesNot, aMeshDS, aNodes, SMDSAbs_Node ); 
+  idSourceToSet( theAffectedElems, aMeshDS, anAffected, SMDSAbs_All );
 
+  
   bool aResult = aMeshEditor.DoubleNodes( anElems, aNodes, anAffected );
-
+  
   storeResult( aMeshEditor) ;
 
-  return aResult;
+  if ( aResult ) {
+    myMesh->SetIsModified( true );
+
+    // Create group with newly created elements
+    SMESH::long_array_var anIds = GetLastCreatedElems();
+    if (anIds->length() > 0) {
+      SMESH::ElementType aGroupType = myMesh_i->GetElementType(anIds[0], true);
+      string anUnindexedName (theElems->GetName());
+      string aNewName = generateGroupName(anUnindexedName + "_double");
+      aNewGroup = myMesh_i->CreateGroup(aGroupType, aNewName.c_str());
+      aNewGroup->Add(anIds);
+    }
+  }
+
+  // Update Python script
+  TPythonDump() << "createdElems = " << this << ".DoubleNodeElemGroupNew( " << theElems << ", "
+    << theNodesNot << ", " << theAffectedElems << " )";
+  return aNewGroup._retn();
 }
 
 //================================================================================
@@ -4344,36 +5090,42 @@ CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeGroup(
   \param theElems - group of of elements (edges or faces) to be replicated
   \param theNodesNot - group of nodes not to replicated
   \param theShape - shape to detect affected elements (element which geometric center
-         located on or inside shape).
-         The replicated nodes should be associated to affected elements.
+  located on or inside shape).
+  The replicated nodes should be associated to affected elements.
   \return TRUE if operation has been completed successfully, FALSE otherwise
   \sa DoubleNodesInRegion(), DoubleNodeGroupsInRegion()
 */
 //================================================================================
 
-CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeGroupInRegion( 
-  SMESH::SMESH_GroupBase_ptr theElems,
-  SMESH::SMESH_GroupBase_ptr theNodesNot,
-  GEOM::GEOM_Object_ptr      theShape )
+CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeElemGroupInRegion(SMESH::SMESH_GroupBase_ptr theElems,
+                                                               SMESH::SMESH_GroupBase_ptr theNodesNot,
+                                                               GEOM::GEOM_Object_ptr      theShape )
 
 {
   if ( CORBA::is_nil( theElems ) && theElems->GetType() == SMESH::NODE )
     return false;
-  
+
   initData();
 
   ::SMESH_MeshEditor aMeshEditor( myMesh );
 
   SMESHDS_Mesh* aMeshDS = GetMeshDS();
   TIDSortedElemSet anElems, aNodes, anAffected;
-  groupToSet( theElems, aMeshDS, anElems, SMDSAbs_All ); 
-  groupToSet( theNodesNot, aMeshDS, aNodes, SMDSAbs_Node ); 
+  idSourceToSet( theElems, aMeshDS, anElems, SMDSAbs_All ); 
+  idSourceToSet( theNodesNot, aMeshDS, aNodes, SMDSAbs_Node ); 
 
   TopoDS_Shape aShape = SMESH_Gen_i::GetSMESHGen()->GeomObjectToShape( theShape );
   bool aResult = aMeshEditor.DoubleNodesInRegion( anElems, aNodes, aShape );
 
   storeResult( aMeshEditor) ;
 
+  myMesh->GetMeshDS()->Modified();
+  if ( aResult )
+    myMesh->SetIsModified( true );
+
+  // Update Python script
+  TPythonDump() << "isDone = " << this << ".DoubleNodeElemGroupInRegion( " << theElems << ", "
+                << theNodesNot << ", " << theShape << " )";
   return aResult;
 }
 
@@ -4384,7 +5136,7 @@ CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeGroupInRegion(
   \param theElems - list of groups of elements (edges or faces) to be replicated
   \param theNodesNot - list of groups of nodes not to replicated
   \param theAffectedElems - group of elements to which the replicated nodes
-         should be associated to.
+  should be associated to.
   \return TRUE if operation has been completed successfully, FALSE otherwise
   \sa DoubleNodeGroup(), DoubleNodes()
 */
@@ -4399,7 +5151,7 @@ static void listOfGroupToSet(const SMESH::ListOfGroups& theGrpList,
   {
     SMESH::SMESH_GroupBase_var aGrp = theGrpList[ i ];
     if ( !CORBA::is_nil( aGrp ) && (theIsNodeGrp ? aGrp->GetType() == SMESH::NODE 
-                                                 : aGrp->GetType() != SMESH::NODE ) )
+                                    : aGrp->GetType() != SMESH::NODE ) )
     {
       SMESH::long_array_var anIDs = aGrp->GetIDs();
       arrayToSet( anIDs, theMeshDS, theElemSet, theIsNodeGrp ? SMDSAbs_Node : SMDSAbs_All );
@@ -4407,10 +5159,9 @@ static void listOfGroupToSet(const SMESH::ListOfGroups& theGrpList,
   }
 }
 
-CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeGroups( 
-  const SMESH::ListOfGroups& theElems,
-  const SMESH::ListOfGroups& theNodesNot,
-  const SMESH::ListOfGroups& theAffectedElems )
+CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeElemGroups(const SMESH::ListOfGroups& theElems,
+                                                        const SMESH::ListOfGroups& theNodesNot,
+                                                        const SMESH::ListOfGroups& theAffectedElems)
 {
   initData();
 
@@ -4426,6 +5177,13 @@ CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeGroups(
 
   storeResult( aMeshEditor) ;
 
+  myMesh->GetMeshDS()->Modified();
+  if ( aResult )
+    myMesh->SetIsModified( true );
+
+  // Update Python script
+  TPythonDump() << "isDone = " << this << ".DoubleNodeElemGroups( " << &theElems << ", "
+                << &theNodesNot << ", " << &theAffectedElems << " )";
   return aResult;
 }
 
@@ -4436,17 +5194,17 @@ CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeGroups(
   \param theElems - list of groups of elements (edges or faces) to be replicated
   \param theNodesNot - list of groups of nodes not to replicated
   \param theShape - shape to detect affected elements (element which geometric center
-         located on or inside shape).
-         The replicated nodes should be associated to affected elements.
+  located on or inside shape).
+  The replicated nodes should be associated to affected elements.
   \return TRUE if operation has been completed successfully, FALSE otherwise
   \sa DoubleNodeGroupInRegion(), DoubleNodesInRegion()
 */
 //================================================================================
 
-CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeGroupsInRegion( 
-  const SMESH::ListOfGroups& theElems,
-  const SMESH::ListOfGroups& theNodesNot,
-  GEOM::GEOM_Object_ptr      theShape )
+CORBA::Boolean
+SMESH_MeshEditor_i::DoubleNodeElemGroupsInRegion(const SMESH::ListOfGroups& theElems,
+                                                 const SMESH::ListOfGroups& theNodesNot,
+                                                 GEOM::GEOM_Object_ptr      theShape )
 {
   initData();
 
@@ -4462,5 +5220,172 @@ CORBA::Boolean SMESH_MeshEditor_i::DoubleNodeGroupsInRegion(
 
   storeResult( aMeshEditor) ;
 
+  myMesh->GetMeshDS()->Modified();
+  if ( aResult )
+    myMesh->SetIsModified( true );
+
+  // Update Python script
+  TPythonDump() << "isDone = " << this << ".DoubleNodeElemGroupsInRegion( " << &theElems << ", "
+                << &theNodesNot << ", " << theShape << " )";
+  return aResult;
+}
+
+//================================================================================
+/*!
+  \brief Generated skin mesh (containing 2D cells) from 3D mesh
+   The created 2D mesh elements based on nodes of free faces of boundary volumes
+  \return TRUE if operation has been completed successfully, FALSE otherwise
+*/
+//================================================================================
+
+CORBA::Boolean SMESH_MeshEditor_i::Make2DMeshFrom3D()
+{
+  initData();
+
+  ::SMESH_MeshEditor aMeshEditor( myMesh );
+  bool aResult = aMeshEditor.Make2DMeshFrom3D();
+  storeResult( aMeshEditor) ;
+  myMesh->GetMeshDS()->Modified();
+  TPythonDump() << "isDone = " << this << ".Make2DMeshFrom3D()";
+  return aResult;
+}
+
+//================================================================================
+/*!
+ * \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.
+ * 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.
+ * @param theDomains - list of groups of volumes
+ * @param createJointElems - if TRUE, create the elements
+ * @return TRUE if operation has been completed successfully, FALSE otherwise
+ */
+//================================================================================
+
+CORBA::Boolean SMESH_MeshEditor_i::DoubleNodesOnGroupBoundaries( const SMESH::ListOfGroups& theDomains,
+                                                                 CORBA::Boolean createJointElems )
+{
+  initData();
+
+  ::SMESH_MeshEditor aMeshEditor( myMesh );
+
+  SMESHDS_Mesh* aMeshDS = GetMeshDS();
+
+  vector<TIDSortedElemSet> domains;
+  domains.clear();
+
+  for ( int i = 0, n = theDomains.length(); i < n; i++ )
+  {
+    SMESH::SMESH_GroupBase_var aGrp = theDomains[ i ];
+    if ( !CORBA::is_nil( aGrp ) && ( aGrp->GetType() != SMESH::NODE ) )
+    {
+      TIDSortedElemSet domain;
+      domain.clear();
+      domains.push_back(domain);
+      SMESH::long_array_var anIDs = aGrp->GetIDs();
+      arrayToSet( anIDs, aMeshDS, domains[ i ], SMDSAbs_All );
+    }
+  }
+
+  bool aResult = aMeshEditor.DoubleNodesOnGroupBoundaries( domains, createJointElems );
+
+  storeResult( aMeshEditor) ;
+  myMesh->GetMeshDS()->Modified();
+
+  // Update Python script
+  TPythonDump() << "isDone = " << this << ".DoubleNodesOnGroupBoundaries( " << &theDomains
+      << ", " << createJointElems << " )";
   return aResult;
 }
+
+// issue 20749 ===================================================================
+/*!
+ * \brief Creates missing boundary elements
+ *  \param elements - elements whose boundary is to be checked
+ *  \param dimension - defines type of boundary elements to create
+ *  \param groupName - a name of group to store created boundary elements in,
+ *                     "" means not to create the group
+ *  \param meshName - a name of new mesh to store created boundary elements in,
+ *                     "" means not to create the new mesh
+ *  \param toCopyElements - if true, the checked elements will be copied into the new mesh
+ *  \param toCopyExistingBondary - if true, not only new but also pre-existing 
+ *                                boundary elements will be copied into the new mesh
+ *  \param group - returns the create group, if any
+ *  \retval SMESH::SMESH_Mesh - the mesh where elements were added to
+ */
+// ================================================================================
+
+SMESH::SMESH_Mesh_ptr
+SMESH_MeshEditor_i::MakeBoundaryMesh(SMESH::SMESH_IDSource_ptr idSource,
+                                     SMESH::Bnd_Dimension      dim,
+                                     const char*               groupName,
+                                     const char*               meshName,
+                                     CORBA::Boolean            toCopyElements,
+                                     CORBA::Boolean            toCopyExistingBondary,
+                                     SMESH::SMESH_Group_out    group)
+{
+  initData();
+
+  if ( dim > SMESH::BND_1DFROM2D )
+    THROW_SALOME_CORBA_EXCEPTION("Invalid boundary dimension", SALOME::BAD_PARAM);
+
+  
+  SMESHDS_Mesh* aMeshDS = GetMeshDS();
+
+  SMESH::SMESH_Mesh_var mesh_var;
+  SMESH::SMESH_Group_var group_var;
+
+  TPythonDump pyDump;
+
+  TIDSortedElemSet elements;
+  SMDSAbs_ElementType elemType = (dim == SMESH::BND_1DFROM2D) ? SMDSAbs_Face : SMDSAbs_Volume;
+  if ( idSourceToSet( idSource, aMeshDS, elements, elemType,/*emptyIfIsMesh=*/true ))
+  {
+    // mesh to fill in
+    mesh_var =
+      strlen(meshName) ? makeMesh(meshName) : SMESH::SMESH_Mesh::_duplicate(myMesh_i->_this());
+    SMESH_Mesh_i* mesh_i = SMESH::DownCast<SMESH_Mesh_i*>( mesh_var );
+    // other mesh
+    SMESH_Mesh* smesh_mesh = (mesh_i==myMesh_i) ? (SMESH_Mesh*)0 : &mesh_i->GetImpl();
+
+    // group of new boundary elements
+    SMESH_Group* smesh_group = 0;
+    if ( strlen(groupName) )
+    {
+      group_var = mesh_i->CreateGroup( SMESH::ElementType(elemType),groupName);
+      if ( SMESH_GroupBase_i* group_i = SMESH::DownCast<SMESH_GroupBase_i*>( group_var ))
+        smesh_group = group_i->GetSmeshGroup();
+    }
+
+    // do it
+    ::SMESH_MeshEditor aMeshEditor( myMesh );
+    aMeshEditor.MakeBoundaryMesh( elements,
+                                  ::SMESH_MeshEditor::Bnd_Dimension(dim),
+                                  smesh_group,
+                                  smesh_mesh,
+                                  toCopyElements,
+                                  toCopyExistingBondary);
+    storeResult( aMeshEditor );
+  }
+
+  // result of MakeBoundaryMesh() is a tuple (mesh, group)
+  if ( mesh_var->_is_nil() )
+    pyDump << myMesh_i->_this() << ", ";
+  else
+    pyDump << mesh_var << ", ";
+  if ( group_var->_is_nil() )
+    pyDump << "_NoneGroup = "; // assignment to None is forbiden
+  else
+    pyDump << group_var << " = ";
+  pyDump << this << ".MakeBoundaryMesh( "
+         << idSource << ", "
+         << dim << ", "
+         << groupName << ", "
+         << meshName<< ", "
+         << toCopyElements << ", "
+         << toCopyExistingBondary << ")";
+
+  group = group_var._retn();
+  return mesh_var._retn();
+}