Salome HOME
53061: "Clear mesh data" removes too many (if !HasShapeToMesh())
[modules/smesh.git] / src / SMESH_I / SMESH_Mesh_i.cxx
index f6beb92d5de1d36f109f00675350b6a200a2cd4b..b025573b9b559add0fb7ed705d7ffc70251e04ef 100644 (file)
@@ -1,4 +1,4 @@
-// Copyright (C) 2007-2013  CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2015  CEA/DEN, EDF R&D, OPEN CASCADE
 //
 // Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
@@ -6,7 +6,7 @@
 // This library is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Lesser General Public
 // License as published by the Free Software Foundation; either
-// version 2.1 of the License.
+// version 2.1 of the License, or (at your option) any later version.
 //
 // This library is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -26,6 +26,7 @@
 #include "SMESH_Mesh_i.hxx"
 
 #include "DriverMED_R_SMESHDS_Mesh.h"
+#include "DriverMED_W_Field.h"
 #include "DriverMED_W_SMESHDS_Mesh.h"
 #include "MED_Factory.hxx"
 #include "SMDS_EdgePosition.hxx"
 #include "SMESHDS_Group.hxx"
 #include "SMESHDS_GroupOnGeom.hxx"
 #include "SMESH_Controls.hxx"
+#include "SMESH_File.hxx"
 #include "SMESH_Filter_i.hxx"
 #include "SMESH_Gen_i.hxx"
 #include "SMESH_Group.hxx"
 #include "SMESH_Group_i.hxx"
+#include "SMESH_Mesh.hxx"
 #include "SMESH_MeshAlgos.hxx"
 #include "SMESH_MeshEditor.hxx"
 #include "SMESH_MeshEditor_i.hxx"
 #include "SMESH_PythonDump.hxx"
 #include "SMESH_subMesh_i.hxx"
 
-#include <OpUtil.hxx>
 #include <SALOMEDS_Attributes_wrap.hxx>
 #include <SALOMEDS_wrap.hxx>
-#include <SALOME_NamingService.hxx>
 #include <Utils_ExceptHandlers.hxx>
-#include <Utils_SINGLETON.hxx>
 #include <utilities.h>
 
 #include <GEOMImpl_Types.hxx>
 
 // OCCT Includes
 #include <BRep_Builder.hxx>
-#include <OSD_Directory.hxx>
-#include <OSD_File.hxx>
-#include <OSD_Path.hxx>
-#include <OSD_Protection.hxx>
-#include <Standard_OutOfMemory.hxx>
-#include <TColStd_MapIteratorOfMapOfInteger.hxx>
+#include <Standard_ErrorHandler.hxx>
 #include <TColStd_MapOfInteger.hxx>
-#include <TColStd_SequenceOfInteger.hxx>
-#include <TCollection_AsciiString.hxx>
 #include <TopExp.hxx>
 #include <TopExp_Explorer.hxx>
 #include <TopTools_MapIteratorOfMapOfShape.hxx>
 #include <TopTools_MapOfShape.hxx>
 #include <TopoDS_Compound.hxx>
 
-#include "SMESH_TryCatch.hxx" // include after OCCT headers!
-
 // STL Includes
 #include <algorithm>
-#include <string>
 #include <iostream>
 #include <sstream>
 
-#include <sys/stat.h>
+#include <vtkUnstructuredGridWriter.h>
+
+// to pass CORBA exception through SMESH_TRY
+#define SMY_OWN_CATCH catch( SALOME::SALOME_Exception& se ) { throw se; }
+
+#include "SMESH_TryCatch.hxx" // include after OCCT headers!
 
 #ifdef _DEBUG_
 static int MYDEBUG = 0;
@@ -110,7 +105,7 @@ int SMESH_Mesh_i::_idGenerator = 0;
 
 SMESH_Mesh_i::SMESH_Mesh_i( PortableServer::POA_ptr thePOA,
                             SMESH_Gen_i*            gen_i,
-                            CORBA::Long studyId )
+                            CORBA::Long             studyId )
 : SALOME::GenericObj_i( thePOA )
 {
   MESSAGE("SMESH_Mesh_i");
@@ -121,6 +116,7 @@ SMESH_Mesh_i::SMESH_Mesh_i( PortableServer::POA_ptr thePOA,
   _editor        = NULL;
   _previewEditor = NULL;
   _preMeshInfo   = NULL;
+  _mainShapeTick = 0;
 }
 
 //=============================================================================
@@ -165,6 +161,11 @@ SMESH_Mesh_i::~SMESH_Mesh_i()
   }
   _mapHypo.clear();
 
+  // clear cashed shapes if no more meshes remain; (the cash is blame,
+  // together with publishing, of spent time increasing in issue 22874)
+  if ( _impl->NbMeshes() == 1 )
+    _gen_i->GetShapeReader()->ClearClientBuffer();
+
   delete _editor; _editor = NULL;
   delete _previewEditor; _previewEditor = NULL;
   delete _impl; _impl = NULL;
@@ -194,6 +195,8 @@ void SMESH_Mesh_i::SetShape( GEOM::GEOM_Object_ptr theShapeObject )
   // to track changes of GEOM groups
   SMESH::SMESH_Mesh_var mesh = _this();
   addGeomGroupData( theShapeObject, mesh );
+  if ( !CORBA::is_nil( theShapeObject ))
+    _mainShapeTick = theShapeObject->GetTick();
 }
 
 //================================================================================
@@ -229,7 +232,25 @@ GEOM::GEOM_Object_ptr SMESH_Mesh_i::GetShapeToMesh()
   try {
     TopoDS_Shape S = _impl->GetMeshDS()->ShapeToMesh();
     if ( !S.IsNull() )
+    {
       aShapeObj = _gen_i->ShapeToGeomObject( S );
+      if ( aShapeObj->_is_nil() )
+      {
+        // S was removed from GEOM_Client by newGroupShape() called by other mesh;
+        // find GEOM_Object by entry (IPAL52735)
+        list<TGeomGroupData>::iterator data = _geomGroupData.begin();
+        for ( ; data != _geomGroupData.end(); ++data )
+          if ( data->_smeshObject->_is_equivalent( _this() ))
+          {
+            SALOMEDS::Study_var study = _gen_i->GetCurrentStudy();
+            if ( study->_is_nil() ) break;
+            SALOMEDS::SObject_wrap so = study->FindObjectID( data->_groupEntry.c_str() );
+            CORBA::Object_var     obj = _gen_i->SObjectToObject( so );
+            aShapeObj = GEOM::GEOM_Object::_narrow( obj );
+            break;
+          }
+      }
+    }
   }
   catch(SALOME_Exception & S_ex) {
     THROW_SALOME_CORBA_EXCEPTION(S_ex.what(), SALOME::BAD_PARAM);
@@ -272,11 +293,11 @@ void SMESH_Mesh_i::Clear() throw (SALOME::SALOME_Exception)
 {
   Unexpect aCatch(SALOME_SalomeException);
   if ( _preMeshInfo )
-    _preMeshInfo->ForgetAllData();
+    _preMeshInfo->ForgetOrLoad(); // load in case if !HasShapeToMesh()
 
   try {
     _impl->Clear();
-    CheckGeomGroupModif(); // issue 20145
+    //CheckGeomGroupModif(); // issue 20145
   }
   catch(SALOME_Exception & S_ex) {
     THROW_SALOME_CORBA_EXCEPTION(S_ex.what(), SALOME::BAD_PARAM);
@@ -397,14 +418,7 @@ SMESH_Mesh_i::ImportMEDFile( const char* theFileName, const char* theMeshName )
   _medFileInfo->major    = major;
   _medFileInfo->minor    = minor;
   _medFileInfo->release  = release;
-#ifdef WIN32
-  struct _stati64 d;
-  if ( ::_stati64( theFileName, &d ) != -1 )
-#else
-  struct stat64 d;
-  if ( ::stat64( theFileName, &d ) != -1 )
-#endif
-    _medFileInfo->fileSize = d.st_size;
+  _medFileInfo->fileSize = SMESH_File( theFileName ).size();
 
   return ConvertDriverMEDReadStatus(status);
 }
@@ -560,6 +574,7 @@ SMESH::Hypothesis_Status SMESH_Mesh_i::ConvertHypothesisStatus
   RETURNCASE( HYP_BAD_SUBSHAPE  );
   RETURNCASE( HYP_BAD_GEOMETRY  );
   RETURNCASE( HYP_NEED_SHAPE    );
+  RETURNCASE( HYP_INCOMPAT_HYPS );
   default:;
   }
   return SMESH::HYP_UNKNOWN_FATAL;
@@ -575,33 +590,31 @@ SMESH::Hypothesis_Status SMESH_Mesh_i::ConvertHypothesisStatus
  */
 //=============================================================================
 
-SMESH::Hypothesis_Status SMESH_Mesh_i::AddHypothesis(GEOM::GEOM_Object_ptr       aSubShapeObject,
-                                                     SMESH::SMESH_Hypothesis_ptr anHyp)
+SMESH::Hypothesis_Status
+SMESH_Mesh_i::AddHypothesis(GEOM::GEOM_Object_ptr       aSubShape,
+                            SMESH::SMESH_Hypothesis_ptr anHyp,
+                            CORBA::String_out           anErrorText)
   throw(SALOME::SALOME_Exception)
 {
   Unexpect aCatch(SALOME_SalomeException);
   if ( _preMeshInfo )
     _preMeshInfo->ForgetOrLoad();
 
-  SMESH_Hypothesis::Hypothesis_Status status = addHypothesis( aSubShapeObject, anHyp );
+  std::string error;
+  SMESH_Hypothesis::Hypothesis_Status status = addHypothesis( aSubShape, anHyp, &error );
+  anErrorText = error.c_str();
 
   SMESH::SMESH_Mesh_var mesh( _this() );
   if ( !SMESH_Hypothesis::IsStatusFatal(status) )
   {
     SALOMEDS::Study_var study = _gen_i->GetCurrentStudy();
-    _gen_i->AddHypothesisToShape( study, mesh, aSubShapeObject, anHyp );
+    _gen_i->AddHypothesisToShape( study, mesh, aSubShape, anHyp );
   }
   if(MYDEBUG) MESSAGE( " AddHypothesis(): status = " << status );
 
   // Update Python script
-  //if(_impl->HasShapeToMesh())
-  {
-    TPythonDump() << "status = " << mesh << ".AddHypothesis( "
-                  << aSubShapeObject << ", " << anHyp << " )";
-  }
-  // else {
-  //   TPythonDump() << "status = " << mesh << ".AddHypothesis( "<< anHyp << " )";
-  // }
+  TPythonDump() << "status = " << mesh << ".AddHypothesis( "
+                << aSubShape << ", " << anHyp << " )";
 
   return ConvertHypothesisStatus(status);
 }
@@ -613,12 +626,13 @@ SMESH::Hypothesis_Status SMESH_Mesh_i::AddHypothesis(GEOM::GEOM_Object_ptr
 //=============================================================================
 
 SMESH_Hypothesis::Hypothesis_Status
-SMESH_Mesh_i::addHypothesis(GEOM::GEOM_Object_ptr       aSubShapeObject,
-                            SMESH::SMESH_Hypothesis_ptr anHyp)
+SMESH_Mesh_i::addHypothesis(GEOM::GEOM_Object_ptr       aSubShape,
+                            SMESH::SMESH_Hypothesis_ptr anHyp,
+                            std::string*                anErrorText)
 {
   if(MYDEBUG) MESSAGE("addHypothesis");
 
-  if (CORBA::is_nil( aSubShapeObject ) && HasShapeToMesh())
+  if (CORBA::is_nil( aSubShape ) && HasShapeToMesh())
     THROW_SALOME_CORBA_EXCEPTION("bad Sub-shape reference",SALOME::BAD_PARAM);
 
   if (CORBA::is_nil( anHyp ))
@@ -630,22 +644,28 @@ SMESH_Mesh_i::addHypothesis(GEOM::GEOM_Object_ptr       aSubShapeObject,
     TopoDS_Shape myLocSubShape;
     //use PseudoShape in case if mesh has no shape
     if(HasShapeToMesh())
-      myLocSubShape = _gen_i->GeomObjectToShape( aSubShapeObject);
+      myLocSubShape = _gen_i->GeomObjectToShape( aSubShape);
     else              
       myLocSubShape = _impl->GetShapeToMesh();
     
     const int hypId = anHyp->GetId();
-    status = _impl->AddHypothesis(myLocSubShape, hypId);
-    if ( !SMESH_Hypothesis::IsStatusFatal(status) ) {
+    std::string error;
+    status = _impl->AddHypothesis( myLocSubShape, hypId, &error );
+    if ( !SMESH_Hypothesis::IsStatusFatal(status) )
+    {
       _mapHypo[hypId] = SMESH::SMESH_Hypothesis::_duplicate( anHyp );
       anHyp->Register();
       // assure there is a corresponding submesh
       if ( !_impl->IsMainShape( myLocSubShape )) {
         int shapeId = _impl->GetMeshDS()->ShapeToIndex( myLocSubShape );
         if ( _mapSubMesh_i.find( shapeId ) == _mapSubMesh_i.end() )
-          SMESH::SMESH_subMesh_var( createSubMesh( aSubShapeObject ));
+          SMESH::SMESH_subMesh_var( createSubMesh( aSubShape ));
       }
     }
+    else if ( anErrorText )
+    {
+      *anErrorText = error;
+    }
   }
   catch(SALOME_Exception & S_ex)
   {
@@ -660,7 +680,7 @@ SMESH_Mesh_i::addHypothesis(GEOM::GEOM_Object_ptr       aSubShapeObject,
  */
 //=============================================================================
 
-SMESH::Hypothesis_Status SMESH_Mesh_i::RemoveHypothesis(GEOM::GEOM_Object_ptr aSubShapeObject,
+SMESH::Hypothesis_Status SMESH_Mesh_i::RemoveHypothesis(GEOM::GEOM_Object_ptr aSubShape,
                                                         SMESH::SMESH_Hypothesis_ptr anHyp)
   throw(SALOME::SALOME_Exception)
 {
@@ -668,18 +688,18 @@ SMESH::Hypothesis_Status SMESH_Mesh_i::RemoveHypothesis(GEOM::GEOM_Object_ptr aS
   if ( _preMeshInfo )
     _preMeshInfo->ForgetOrLoad();
 
-  SMESH_Hypothesis::Hypothesis_Status status = removeHypothesis( aSubShapeObject, anHyp );
+  SMESH_Hypothesis::Hypothesis_Status status = removeHypothesis( aSubShape, anHyp );
   SMESH::SMESH_Mesh_var mesh = _this();
 
   if ( !SMESH_Hypothesis::IsStatusFatal(status) )
   {
     SALOMEDS::Study_var study = _gen_i->GetCurrentStudy();
-    _gen_i->RemoveHypothesisFromShape( study, mesh, aSubShapeObject, anHyp );
+    _gen_i->RemoveHypothesisFromShape( study, mesh, aSubShape, anHyp );
   }
   // Update Python script
   if(_impl->HasShapeToMesh())
     TPythonDump() << "status = " << mesh << ".RemoveHypothesis( "
-                  << aSubShapeObject << ", " << anHyp << " )";
+                  << aSubShape << ", " << anHyp << " )";
   else
     TPythonDump() << "status = " << mesh << ".RemoveHypothesis( "
                   << anHyp << " )";
@@ -694,12 +714,12 @@ SMESH::Hypothesis_Status SMESH_Mesh_i::RemoveHypothesis(GEOM::GEOM_Object_ptr aS
 //=============================================================================
 
 SMESH_Hypothesis::Hypothesis_Status
-SMESH_Mesh_i::removeHypothesis(GEOM::GEOM_Object_ptr       aSubShapeObject,
+SMESH_Mesh_i::removeHypothesis(GEOM::GEOM_Object_ptr       aSubShape,
                                SMESH::SMESH_Hypothesis_ptr anHyp)
 {
   if(MYDEBUG) MESSAGE("removeHypothesis()");
 
-  if (CORBA::is_nil( aSubShapeObject ) && HasShapeToMesh())
+  if (CORBA::is_nil( aSubShape ) && HasShapeToMesh())
     THROW_SALOME_CORBA_EXCEPTION("bad Sub-shape reference", SALOME::BAD_PARAM);
 
   if (CORBA::is_nil( anHyp ))
@@ -711,7 +731,7 @@ SMESH_Mesh_i::removeHypothesis(GEOM::GEOM_Object_ptr       aSubShapeObject,
     TopoDS_Shape myLocSubShape;
     //use PseudoShape in case if mesh has no shape
     if( _impl->HasShapeToMesh() )
-      myLocSubShape = _gen_i->GeomObjectToShape( aSubShapeObject );
+      myLocSubShape = _gen_i->GeomObjectToShape( aSubShape );
     else
       myLocSubShape = _impl->GetShapeToMesh();
 
@@ -737,18 +757,18 @@ SMESH_Mesh_i::removeHypothesis(GEOM::GEOM_Object_ptr       aSubShapeObject,
 //=============================================================================
 
 SMESH::ListOfHypothesis *
-SMESH_Mesh_i::GetHypothesisList(GEOM::GEOM_Object_ptr aSubShapeObject)
+SMESH_Mesh_i::GetHypothesisList(GEOM::GEOM_Object_ptr aSubShape)
 throw(SALOME::SALOME_Exception)
 {
   Unexpect aCatch(SALOME_SalomeException);
   if (MYDEBUG) MESSAGE("GetHypothesisList");
-  if (_impl->HasShapeToMesh() && CORBA::is_nil(aSubShapeObject))
+  if (_impl->HasShapeToMesh() && CORBA::is_nil(aSubShape))
     THROW_SALOME_CORBA_EXCEPTION("bad Sub-shape reference", SALOME::BAD_PARAM);
 
   SMESH::ListOfHypothesis_var aList = new SMESH::ListOfHypothesis();
 
   try {
-    TopoDS_Shape myLocSubShape = _gen_i->GeomObjectToShape(aSubShapeObject);
+    TopoDS_Shape myLocSubShape = _gen_i->GeomObjectToShape(aSubShape);
     if ( myLocSubShape.IsNull() && !_impl->HasShapeToMesh() )
       myLocSubShape = _impl->GetShapeToMesh();
     const list<const SMESHDS_Hypothesis*>& aLocalList = _impl->GetHypothesisList( myLocSubShape );
@@ -814,18 +834,18 @@ SMESH::submesh_array* SMESH_Mesh_i::GetSubMeshes() throw (SALOME::SALOME_Excepti
  */
 //=============================================================================
 
-SMESH::SMESH_subMesh_ptr SMESH_Mesh_i::GetSubMesh(GEOM::GEOM_Object_ptr aSubShapeObject,
+SMESH::SMESH_subMesh_ptr SMESH_Mesh_i::GetSubMesh(GEOM::GEOM_Object_ptr aSubShape,
                                                   const char*           theName )
      throw(SALOME::SALOME_Exception)
 {
   Unexpect aCatch(SALOME_SalomeException);
-  if (CORBA::is_nil(aSubShapeObject))
+  if (CORBA::is_nil(aSubShape))
     THROW_SALOME_CORBA_EXCEPTION("bad Sub-shape reference", SALOME::BAD_PARAM);
 
   SMESH::SMESH_subMesh_var subMesh;
   SMESH::SMESH_Mesh_var    aMesh = _this();
   try {
-    TopoDS_Shape myLocSubShape = _gen_i->GeomObjectToShape(aSubShapeObject);
+    TopoDS_Shape myLocSubShape = _gen_i->GeomObjectToShape(aSubShape);
 
     //Get or Create the SMESH_subMesh object implementation
 
@@ -841,16 +861,16 @@ SMESH::SMESH_subMesh_ptr SMESH_Mesh_i::GetSubMesh(GEOM::GEOM_Object_ptr aSubShap
 
     // create a new subMesh object servant if there is none for the shape
     if ( subMesh->_is_nil() )
-      subMesh = createSubMesh( aSubShapeObject );
+      subMesh = createSubMesh( aSubShape );
     if ( _gen_i->CanPublishInStudy( subMesh ))
     {
       SALOMEDS::Study_var study = _gen_i->GetCurrentStudy();
       SALOMEDS::SObject_wrap aSO =
-        _gen_i->PublishSubMesh( study, aMesh, subMesh, aSubShapeObject, theName );
+        _gen_i->PublishSubMesh( study, aMesh, subMesh, aSubShape, theName );
       if ( !aSO->_is_nil()) {
         // Update Python script
         TPythonDump() << aSO << " = " << aMesh << ".GetSubMesh( "
-                      << aSubShapeObject << ", '" << theName << "' )";
+                      << aSubShape << ", '" << theName << "' )";
       }
     }
   }
@@ -874,7 +894,7 @@ void SMESH_Mesh_i::RemoveSubMesh( SMESH::SMESH_subMesh_ptr theSubMesh )
   if ( theSubMesh->_is_nil() )
     return;
 
-  GEOM::GEOM_Object_var aSubShapeObject;
+  GEOM::GEOM_Object_var aSubShape;
   SALOMEDS::Study_var aStudy = _gen_i->GetCurrentStudy();
   if ( !aStudy->_is_nil() )  {
     // Remove submesh's SObject
@@ -886,10 +906,10 @@ void SMESH_Mesh_i::RemoveSubMesh( SMESH::SMESH_subMesh_ptr theSubMesh )
            anObj->ReferencedObject( aRef.inout() ))
       {
         CORBA::Object_var obj = aRef->GetObject();
-        aSubShapeObject = GEOM::GEOM_Object::_narrow( obj );
+        aSubShape = GEOM::GEOM_Object::_narrow( obj );
       }
-      // if ( aSubShapeObject->_is_nil() ) // not published shape (IPAL13617)
-      //   aSubShapeObject = theSubMesh->GetSubShape();
+      // if ( aSubShape->_is_nil() ) // not published shape (IPAL13617)
+      //   aSubShape = theSubMesh->GetSubShape();
 
       SALOMEDS::StudyBuilder_var builder = aStudy->NewBuilder();
       builder->RemoveObjectWithChildren( anSO );
@@ -899,7 +919,7 @@ void SMESH_Mesh_i::RemoveSubMesh( SMESH::SMESH_subMesh_ptr theSubMesh )
     }
   }
 
-  if ( removeSubMesh( theSubMesh, aSubShapeObject.in() ))
+  if ( removeSubMesh( theSubMesh, aSubShape.in() ))
     if ( _preMeshInfo )
       _preMeshInfo->ForgetOrLoad();
 
@@ -1055,6 +1075,7 @@ void SMESH_Mesh_i::RemoveGroup( SMESH::SMESH_GroupBase_ptr theGroup )
       builder->RemoveObjectWithChildren( aGroupSO );
     }
   }
+  aGroup->Modified(/*removed=*/true); // notify dependent Filter with FT_BelongToMeshGroup criterion
 
   // Remove the group from SMESH data structures
   removeGroup( aGroup->GetLocalID() );
@@ -1078,11 +1099,35 @@ void SMESH_Mesh_i::RemoveGroupWithContents( SMESH::SMESH_GroupBase_ptr theGroup
   if ( theGroup->_is_nil() )
     return;
 
+  vector<int> nodeIds; // to remove nodes becoming free
+  if ( !theGroup->IsEmpty() )
+  {
+    CORBA::Long elemID = theGroup->GetID( 1 );
+    int nbElemNodes = GetElemNbNodes( elemID );
+    if ( nbElemNodes > 0 )
+      nodeIds.reserve( theGroup->Size() * nbElemNodes );
+  }
+
   // Remove contents
   SMESH::SMESH_IDSource_var idSrc = SMESH::SMESH_IDSource::_narrow( theGroup );
   SMDS_ElemIteratorPtr     elemIt = GetElements( idSrc, theGroup->GetType() );
   while ( elemIt->more() )
-    _impl->GetMeshDS()->RemoveElement( elemIt->next() );
+  {
+    const SMDS_MeshElement* e = elemIt->next();
+
+    SMDS_ElemIteratorPtr nIt = e->nodesIterator();
+    while ( nIt->more() )
+      nodeIds.push_back( nIt->next()->GetID() );
+
+    _impl->GetMeshDS()->RemoveElement( e );
+  }
+
+  // Remove free nodes
+  if ( theGroup->GetType() != SMESH::NODE )
+    for ( size_t i = 0 ; i < nodeIds.size(); ++i )
+      if ( const SMDS_MeshNode* n = _impl->GetMeshDS()->FindNode( nodeIds[i] ))
+        if ( n->NbInverseElements() == 0 )
+          _impl->GetMeshDS()->RemoveFreeNode( n, /*sm=*/0 );
 
   TPythonDump pyDump; // Supress dump from RemoveGroup()
 
@@ -1504,7 +1549,7 @@ SMESH_Mesh_i::CutListOfGroups(const SMESH::ListOfGroups& theMainGroups,
     if ( aType == SMESH::ALL )
       aType = aGrp->GetType();
     else if ( aType != aGrp->GetType() )
-      THROW_SALOME_CORBA_EXCEPTION("UnionListOfGroups(): different group types",
+      THROW_SALOME_CORBA_EXCEPTION("CutListOfGroups(): different group types",
                                    SALOME::BAD_PARAM);
     if ( SMESH_GroupBase_i* grp_i = SMESH::DownCast< SMESH_GroupBase_i* >( aGrp ))
       if ( SMESHDS_GroupBase* grpDS = grp_i->GetGroupDS() )
@@ -1522,7 +1567,7 @@ SMESH_Mesh_i::CutListOfGroups(const SMESH::ListOfGroups& theMainGroups,
     if ( CORBA::is_nil( aGrp ) )
       continue;
     if ( aType != aGrp->GetType() )
-      THROW_SALOME_CORBA_EXCEPTION("UnionListOfGroups(): different group types",
+      THROW_SALOME_CORBA_EXCEPTION("CutListOfGroups(): different group types",
                                    SALOME::BAD_PARAM);
     if ( SMESH_GroupBase_i* grp_i = SMESH::DownCast< SMESH_GroupBase_i* >( aGrp ))
       if ( SMESHDS_GroupBase* grpDS = grp_i->GetGroupDS() )
@@ -1558,7 +1603,7 @@ SMESH_Mesh_i::CutListOfGroups(const SMESH::ListOfGroups& theMainGroups,
 
   // Update Python script
   pyDump << aResGrp << " = " << SMESH::SMESH_Mesh_var( _this() )
-         << ".CutListOfGroups( " << theMainGroups
+         << ".CutListOfGroups( " << theMainGroups << ", "
          << theToolGroups << ", '" << theName << "' )";
 
   SMESH_CATCH( SMESH::throwCorbaException );
@@ -1566,25 +1611,52 @@ SMESH_Mesh_i::CutListOfGroups(const SMESH::ListOfGroups& theMainGroups,
   return aResGrp._retn();
 }
 
+namespace // functions making checks according to SMESH::NB_COMMON_NODES_ENUM
+{
+  bool isAllNodesCommon(int nbChecked, int nbCommon, int nbNodes, int nbCorners,
+                        bool & toStopChecking )
+  {
+    toStopChecking = ( nbCommon < nbChecked );
+    return nbCommon == nbNodes;
+  }
+  bool isMainNodesCommon(int nbChecked, int nbCommon, int nbNodes, int nbCorners,
+                         bool & toStopChecking )
+  {
+    toStopChecking = ( nbCommon < nbChecked || nbChecked >= nbCorners );
+    return nbCommon == nbCorners;
+  }
+  bool isAtLeastOneNodeCommon(int nbChecked, int nbCommon, int nbNodes, int nbCorners,
+                              bool & toStopChecking )
+  {
+    return nbCommon > 0;
+  }
+  bool isMajorityOfNodesCommon(int nbChecked, int nbCommon, int nbNodes, int nbCorners,
+                               bool & toStopChecking )
+  {
+    return nbCommon >= (nbNodes+1) / 2;
+  }
+}
+
 //=============================================================================
 /*!
-  \brief Create groups of entities from existing groups of superior dimensions 
-  System
-  1) extract all nodes from each group,
-  2) combine all elements of specified dimension laying on these nodes.
-  \param theGroups list of source groups 
-  \param theElemType dimension of elements 
-  \param theName name of new group
-  \return pointer on new group
-  *
-  IMP 19939
+ * Create a group of entities basing on nodes of other groups.
+ *  \param [in] theGroups - list of either groups, sub-meshes or filters.
+ *  \param [in] anElemType - a type of elements to include to the new group.
+ *  \param [in] theName - a name of the new group.
+ *  \param [in] theNbCommonNodes - criterion of inclusion of an element to the new group.
+ *  \param [in] theUnderlyingOnly - if \c True, an element is included to the
+ *         new group provided that it is based on nodes of an element of \a aListOfGroups
+ *  \return SMESH_Group - the created group
 */
+// IMP 19939, bug 22010, IMP 22635
 //=============================================================================
 
 SMESH::SMESH_Group_ptr
-SMESH_Mesh_i::CreateDimGroup(const SMESH::ListOfGroups& theGroups, 
-                             SMESH::ElementType         theElemType, 
-                             const char*                theName )
+SMESH_Mesh_i::CreateDimGroup(const SMESH::ListOfIDSources& theGroups,
+                             SMESH::ElementType            theElemType,
+                             const char*                   theName,
+                             SMESH::NB_COMMON_NODES_ENUM   theNbCommonNodes,
+                             CORBA::Boolean                theUnderlyingOnly)
   throw (SALOME::SALOME_Exception)
 {
   SMESH::SMESH_Group_var aResGrp;
@@ -1600,6 +1672,17 @@ SMESH_Mesh_i::CreateDimGroup(const SMESH::ListOfGroups& theGroups,
 
   SMDSAbs_ElementType anElemType = (SMDSAbs_ElementType)theElemType;
 
+  bool (*isToInclude)(int nbChecked, int nbCommon, int nbNodes, int nbCorners, bool & toStop);
+  SMESH_Comment nbCoNoStr( "SMESH.");
+  switch ( theNbCommonNodes ) {
+  case SMESH::ALL_NODES   : isToInclude = isAllNodesCommon;        nbCoNoStr<<"ALL_NODES"   ;break;
+  case SMESH::MAIN        : isToInclude = isMainNodesCommon;       nbCoNoStr<<"MAIN"        ;break;
+  case SMESH::AT_LEAST_ONE: isToInclude = isAtLeastOneNodeCommon;  nbCoNoStr<<"AT_LEAST_ONE";break;
+  case SMESH::MAJORITY    : isToInclude = isMajorityOfNodesCommon; nbCoNoStr<<"MAJORITY"    ;break;
+  default: return aResGrp._retn();
+  }
+  int nbChecked, nbCommon, nbNodes, nbCorners;
+
   // Create a group
 
   TPythonDump pyDump;
@@ -1612,14 +1695,19 @@ SMESH_Mesh_i::CreateDimGroup(const SMESH::ListOfGroups& theGroups,
     SMESH::DownCast<SMESH_GroupBase_i*>( aResGrp )->GetGroupDS();
   SMDS_MeshGroup& resGroupCore = static_cast< SMESHDS_Group* >( groupBaseDS )->SMDSGroup();
 
+  vector<bool> isNodeInGroups;
+
   for ( int g = 0, n = theGroups.length(); g < n; g++ ) // loop on theGroups
   {
-    SMESH::SMESH_GroupBase_var aGrp = theGroups[ g ];
+    SMESH::SMESH_IDSource_var aGrp = theGroups[ g ];
     if ( CORBA::is_nil( aGrp ) )
       continue;
+    SMESH::SMESH_Mesh_var mesh = aGrp->GetMesh();
+    if ( mesh->_is_nil() || mesh->GetId() != this->GetId() )
+      continue;
 
-    groupBaseDS = SMESH::DownCast<SMESH_GroupBase_i*>( aGrp )->GetGroupDS();
-    SMDS_ElemIteratorPtr elIt = groupBaseDS->GetElements();
+    SMDS_ElemIteratorPtr elIt = GetElements( aGrp, SMESH::ALL );
+    if ( !elIt ) continue;
 
     if ( theElemType == SMESH::NODE ) // get all nodes of elements
     {
@@ -1630,30 +1718,93 @@ SMESH_Mesh_i::CreateDimGroup(const SMESH::ListOfGroups& theGroups,
           resGroupCore.Add( nIt->next() );
       }
     }
-    else // get elements of theElemType based on nodes of every element of group
+    // get elements of theElemType based on nodes of every element of group
+    else if ( theUnderlyingOnly )
     {
       while ( elIt->more() )
       {
-        const SMDS_MeshElement* el = elIt->next(); // an element of group
+        const SMDS_MeshElement* el = elIt->next(); // an element of ref group
         TIDSortedElemSet elNodes( el->begin_nodes(), el->end_nodes() );
         TIDSortedElemSet checkedElems;
-        SMDS_ElemIteratorPtr nIt = el->nodesIterator();
+        SMDS_NodeIteratorPtr nIt = el->nodeIterator();
         while ( nIt->more() )
         {
-          const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nIt->next() );
+          const SMDS_MeshNode* n = nIt->next();
           SMDS_ElemIteratorPtr elOfTypeIt = n->GetInverseElementIterator( anElemType );
           // check nodes of elements of theElemType around el
           while ( elOfTypeIt->more() )
           {
             const SMDS_MeshElement* elOfType = elOfTypeIt->next();
             if ( !checkedElems.insert( elOfType ).second ) continue;
-
+            nbNodes   = elOfType->NbNodes();
+            nbCorners = elOfType->NbCornerNodes();
+            nbCommon  = 0;
+            bool toStopChecking = false;
             SMDS_ElemIteratorPtr nIt2 = elOfType->nodesIterator();
-            bool allNodesOK = true;
-            while ( nIt2->more() && allNodesOK )
-              allNodesOK = elNodes.count( nIt2->next() );
-            if ( allNodesOK )
-              resGroupCore.Add( elOfType );
+            for ( nbChecked = 1; nIt2->more() && !toStopChecking; ++nbChecked )
+              if ( elNodes.count( nIt2->next() ) &&
+                   isToInclude( nbChecked, ++nbCommon, nbNodes, nbCorners, toStopChecking ))
+              {
+                resGroupCore.Add( elOfType );
+                break;
+              }
+          }
+        }
+      }
+    }
+    // get all nodes of elements of groups
+    else
+    {
+      while ( elIt->more() )
+      {
+        const SMDS_MeshElement* el = elIt->next(); // an element of group
+        SMDS_NodeIteratorPtr nIt = el->nodeIterator();
+        while ( nIt->more() )
+        {
+          const SMDS_MeshNode* n = nIt->next();
+          if ( n->GetID() >= (int) isNodeInGroups.size() )
+            isNodeInGroups.resize( n->GetID() + 1, false );
+          isNodeInGroups[ n->GetID() ] = true;
+        }
+      }
+    }
+  }
+
+  // Get elements of theElemType based on a certain number of nodes of elements of groups
+  if ( !theUnderlyingOnly && !isNodeInGroups.empty() )
+  {
+    const SMDS_MeshNode* n;
+    vector<bool> isElemChecked( aMeshDS->MaxElementID() + 1 );
+    const int isNodeInGroupsSize = isNodeInGroups.size();
+    for ( int iN = 0; iN < isNodeInGroupsSize; ++iN )
+    {
+      if ( !isNodeInGroups[ iN ] ||
+           !( n = aMeshDS->FindNode( iN )))
+        continue;
+
+      // check nodes of elements of theElemType around n
+      SMDS_ElemIteratorPtr elOfTypeIt = n->GetInverseElementIterator( anElemType );
+      while ( elOfTypeIt->more() )
+      {
+        const SMDS_MeshElement*  elOfType = elOfTypeIt->next();
+        vector<bool>::reference isChecked = isElemChecked[ elOfType->GetID() ];
+        if ( isChecked )
+          continue;
+        isChecked = true;
+
+        nbNodes   = elOfType->NbNodes();
+        nbCorners = elOfType->NbCornerNodes();
+        nbCommon  = 0;
+        bool toStopChecking = false;
+        SMDS_ElemIteratorPtr nIt = elOfType->nodesIterator();
+        for ( nbChecked = 1; nIt->more() && !toStopChecking; ++nbChecked )
+        {
+          const int nID = nIt->next()->GetID();
+          if ( nID < isNodeInGroupsSize && isNodeInGroups[ nID ] &&
+               isToInclude( nbChecked, ++nbCommon, nbNodes, nbCorners, toStopChecking ))
+          {
+            resGroupCore.Add( elOfType );
+            break;
           }
         }
       }
@@ -1663,7 +1814,8 @@ SMESH_Mesh_i::CreateDimGroup(const SMESH::ListOfGroups& theGroups,
   // Update Python script
   pyDump << aResGrp << " = " << SMESH::SMESH_Mesh_var( _this())
          << ".CreateDimGroup( "
-         << theGroups << ", " << theElemType << ", '" << theName << "' )";
+         << theGroups << ", " << theElemType << ", '" << theName << "', "
+         << nbCoNoStr << ", " << theUnderlyingOnly << ")";
 
   SMESH_CATCH( SMESH::throwCorbaException );
 
@@ -1699,10 +1851,13 @@ void SMESH_Mesh_i::addGeomGroupData(GEOM::GEOM_Object_ptr theGeomObj,
   CORBA::String_var entry = groupSO->GetID();
   groupData._groupEntry = entry.in();
   // indices
-  for ( int i = 0; i < ids->length(); ++i )
+  for ( CORBA::ULong i = 0; i < ids->length(); ++i )
     groupData._indices.insert( ids[i] );
   // SMESH object
   groupData._smeshObject = CORBA::Object::_duplicate( theSmeshObj );
+  // shape index in SMESHDS
+  // TopoDS_Shape shape = _gen_i->GeomObjectToShape( theGeomObj );
+  // groupData._dsID = shape.IsNull() ? 0 : _impl->GetSubMesh( shape )->GetId();
 }
 
 //================================================================================
@@ -1749,7 +1904,7 @@ TopoDS_Shape SMESH_Mesh_i::newGroupShape( TGeomGroupData & groupData)
     GEOM::GEOM_IGroupOperations_wrap groupOp =
       geomGen->GetIGroupOperations( _gen_i->GetCurrentStudyID() );
     GEOM::ListOfLong_var   ids = groupOp->GetObjects( geomGroup );
-    for ( int i = 0; i < ids->length(); ++i )
+    for ( CORBA::ULong i = 0; i < ids->length(); ++i )
       curIndices.insert( ids[i] );
 
     if ( groupData._indices == curIndices )
@@ -1776,22 +1931,182 @@ TopoDS_Shape SMESH_Mesh_i::newGroupShape( TGeomGroupData & groupData)
 
 namespace
 {
-  //=============================================================================
+  //-----------------------------------------------------------------------------
   /*!
    * \brief Storage of shape and index used in CheckGeomGroupModif()
    */
-  //=============================================================================
   struct TIndexedShape
   {
     int          _index;
     TopoDS_Shape _shape;
     TIndexedShape( int i, const TopoDS_Shape& s ):_index(i), _shape(s) {}
   };
+  //-----------------------------------------------------------------------------
+  /*!
+   * \brief Data to re-create a group on geometry
+   */
+  struct TGroupOnGeomData
+  {
+    int                 _oldID;
+    int                 _shapeID;
+    SMDSAbs_ElementType _type;
+    std::string         _name;
+    Quantity_Color      _color;
+  };
+}
+
+//=============================================================================
+/*!
+ * \brief Update data if geometry changes
+ *
+ * Issue 0022501
+ */
+//=============================================================================
+
+void SMESH_Mesh_i::CheckGeomModif()
+{
+  if ( !_impl->HasShapeToMesh() ) return;
+
+  SALOMEDS::Study_var study = _gen_i->GetCurrentStudy();
+  if ( study->_is_nil() ) return;
+
+  GEOM::GEOM_Object_var mainGO = _gen_i->ShapeToGeomObject( _impl->GetShapeToMesh() );
+  //if ( mainGO->_is_nil() ) return;
+
+  // Update after group modification
+
+  if ( mainGO->_is_nil() || /* shape was removed from GEOM_Client by newGroupShape()
+                               called by other mesh (IPAL52735) */
+       mainGO->GetType() == GEOM_GROUP ||
+       mainGO->GetTick() == _mainShapeTick )
+  {
+    CheckGeomGroupModif();
+    return;
+  }
+
+  // Update after shape transformation like Translate
+
+  GEOM_Client* geomClient = _gen_i->GetShapeReader();
+  if ( !geomClient ) return;
+  GEOM::GEOM_Gen_var geomGen = _gen_i->GetGeomEngine();
+  if ( geomGen->_is_nil() ) return;
+
+  CORBA::String_var ior = geomGen->GetStringFromIOR( mainGO );
+  geomClient->RemoveShapeFromBuffer( ior.in() );
+
+  // Update data taking into account that
+  // all sub-shapes change but IDs of sub-shapes remain (except for geom groups)
+
+  _impl->Clear();
+  TopoDS_Shape newShape = _gen_i->GeomObjectToShape( mainGO );
+  if ( newShape.IsNull() )
+    return;
+
+  _mainShapeTick = mainGO->GetTick();
+
+  SMESHDS_Mesh * meshDS = _impl->GetMeshDS();
+
+  // store data of groups on geometry
+  vector< TGroupOnGeomData > groupsData;
+  const set<SMESHDS_GroupBase*>& groups = meshDS->GetGroups();
+  groupsData.reserve( groups.size() );
+  set<SMESHDS_GroupBase*>::const_iterator g = groups.begin();
+  for ( ; g != groups.end(); ++g )
+    if ( const SMESHDS_GroupOnGeom* group = dynamic_cast< SMESHDS_GroupOnGeom* >( *g ))
+    {
+      TGroupOnGeomData data;
+      data._oldID   = group->GetID();
+      data._shapeID = meshDS->ShapeToIndex( group->GetShape() );
+      data._type    = group->GetType();
+      data._name    = group->GetStoreName();
+      data._color   = group->GetColor();
+      groupsData.push_back( data );
+    }
+  // store assigned hypotheses
+  vector< pair< int, THypList > > ids2Hyps;
+  const ShapeToHypothesis & hyps = meshDS->GetHypotheses();
+  for ( ShapeToHypothesis::Iterator s2hyps( hyps ); s2hyps.More(); s2hyps.Next() )
+  {
+    const TopoDS_Shape& s = s2hyps.Key();
+    const THypList&  hyps = s2hyps.ChangeValue();
+    ids2Hyps.push_back( make_pair( meshDS->ShapeToIndex( s ), hyps ));
+  }
+
+  // change shape to mesh
+  int oldNbSubShapes = meshDS->MaxShapeIndex();
+  _impl->ShapeToMesh( TopoDS_Shape() );
+  _impl->ShapeToMesh( newShape );
+
+  // re-add shapes of geom groups
+  list<TGeomGroupData>::iterator data = _geomGroupData.begin();
+  for ( ; data != _geomGroupData.end(); ++data )
+  {
+    TopoDS_Shape newShape = newGroupShape( *data );
+    if ( !newShape.IsNull() )
+    {
+      if ( meshDS->ShapeToIndex( newShape ) > 0 ) // a group reduced to one sub-shape
+      {
+        TopoDS_Compound compound;
+        BRep_Builder().MakeCompound( compound );
+        BRep_Builder().Add( compound, newShape );
+        newShape = compound;
+      }
+      _impl->GetSubMesh( newShape );
+    }
+  }
+  if ( oldNbSubShapes != meshDS->MaxShapeIndex() )
+    THROW_SALOME_CORBA_EXCEPTION( "SMESH_Mesh_i::CheckGeomModif() bug",
+                                  SALOME::INTERNAL_ERROR );
+
+  // re-assign hypotheses
+  for ( size_t i = 0; i < ids2Hyps.size(); ++i )
+  {
+    const TopoDS_Shape& s = meshDS->IndexToShape( ids2Hyps[i].first );
+    const THypList&  hyps = ids2Hyps[i].second;
+    THypList::const_iterator h = hyps.begin();
+    for ( ; h != hyps.end(); ++h )
+      _impl->AddHypothesis( s, (*h)->GetID() );
+  }
+
+  // restore groups
+  for ( size_t i = 0; i < groupsData.size(); ++i )
+  {
+    const TGroupOnGeomData& data = groupsData[i];
+
+    map<int, SMESH::SMESH_GroupBase_ptr>::iterator i2g = _mapGroups.find( data._oldID );
+    if ( i2g == _mapGroups.end() ) continue;
+
+    SMESH_GroupBase_i* gr_i = SMESH::DownCast<SMESH_GroupBase_i*>( i2g->second );
+    if ( !gr_i ) continue;
+
+    int id;
+    SMESH_Group* g = _impl->AddGroup( data._type, data._name.c_str(), id,
+                                      meshDS->IndexToShape( data._shapeID ));
+    if ( !g )
+    {
+      _mapGroups.erase( i2g );
+    }
+    else
+    {
+      g->GetGroupDS()->SetColor( data._color );
+      gr_i->changeLocalId( id );
+      _mapGroups[ id ] = i2g->second;
+      if ( data._oldID != id )
+        _mapGroups.erase( i2g );
+    }
+  }
+
+  // update _mapSubMesh
+  map<int, ::SMESH_subMesh*>::iterator i_sm = _mapSubMesh.begin();
+  for ( ; i_sm != _mapSubMesh.end(); ++i_sm )
+    i_sm->second = _impl->GetSubMesh( meshDS->IndexToShape( i_sm->first ));
+
 }
+
 //=============================================================================
 /*!
  * \brief Update objects depending on changed geom groups
- * 
+ *
  * NPAL16168: geometrical group edition from a submesh don't modifiy mesh computation
  * issue 0020210: Update of a smesh group after modification of the associated geom group
  */
@@ -1948,9 +2263,11 @@ void SMESH_Mesh_i::CheckGeomGroupModif()
           groupData.push_back
             ( make_pair( TIndexedShape( gog->GetID(),gog->GetShape()), gog->GetType()));
       }
-      // set new shape to mesh -> DS of submeshes and geom groups is deleted
+      // set new shape to mesh -> DS of sub-meshes and geom groups are deleted
+      _impl->Clear();
+      _impl->ShapeToMesh( TopoDS_Shape() ); // IPAL52730
       _impl->ShapeToMesh( newShape );
-      
+
       // reassign hypotheses
       TShapeHypList::iterator indS_hyps = assignedHyps.begin();
       for ( ; indS_hyps != assignedHyps.end(); ++indS_hyps )
@@ -1967,7 +2284,7 @@ void SMESH_Mesh_i::CheckGeomGroupModif()
           continue;
         for ( hypIt = hyps.begin(); hypIt != hyps.end(); ++hypIt )
           _impl->AddHypothesis( geom._shape, (*hypIt)->GetID());
-        // care of submeshes
+        // care of sub-meshes
         SMESH_subMesh* newSubmesh = _impl->GetSubMesh( geom._shape );
         if ( newID != oldID ) {
           _mapSubMesh   [ newID ] = newSubmesh;
@@ -2609,44 +2926,36 @@ CORBA::Boolean SMESH_Mesh_i::HasDuplicatedGroupNamesMED()
 
 void SMESH_Mesh_i::PrepareForWriting (const char* file, bool overwrite)
 {
-  TCollection_AsciiString aFullName ((char*)file);
-  OSD_Path aPath (aFullName);
-  OSD_File aFile (aPath);
-  if (aFile.Exists()) {
+  SMESH_File aFile( file );
+  SMESH_Comment msg;
+  if (aFile.exists()) {
     // existing filesystem node
-    if (aFile.KindOfFile() == OSD_FILE) {
-      if (aFile.IsWriteable()) {
-        if (overwrite) {
-          aFile.Reset();
-          aFile.Remove();
-        }
-        if (aFile.Failed()) {
-          TCollection_AsciiString msg ("File ");
-          msg += aFullName + " cannot be replaced.";
-          THROW_SALOME_CORBA_EXCEPTION(msg.ToCString(), SALOME::BAD_PARAM);
+    if ( !aFile.isDirectory() ) {
+      if ( aFile.openForWriting() ) {
+        if ( overwrite && ! aFile.remove()) {
+          msg << "Can't replace " << aFile.getName();
         }
       } else {
-        TCollection_AsciiString msg ("File ");
-        msg += aFullName + " cannot be overwritten.";
-        THROW_SALOME_CORBA_EXCEPTION(msg.ToCString(), SALOME::BAD_PARAM);
+        msg << "Can't write into " << aFile.getName();
       }
     } else {
-      TCollection_AsciiString msg ("Location ");
-      msg += aFullName + " is not a file.";
-      THROW_SALOME_CORBA_EXCEPTION(msg.ToCString(), SALOME::BAD_PARAM);
+      msg << "Location " << aFile.getName() << " is not a file";
     }
-  } else {
+  }
+  else {
     // nonexisting file; check if it can be created
-    aFile.Reset();
-    aFile.Build(OSD_WriteOnly, OSD_Protection());
-    if (aFile.Failed()) {
-      TCollection_AsciiString msg ("You cannot create the file ");
-      msg += aFullName + ". Check the directory existance and access rights.";
-      THROW_SALOME_CORBA_EXCEPTION(msg.ToCString(), SALOME::BAD_PARAM);
-    } else {
-      aFile.Close();
-      aFile.Remove();
+    if ( !aFile.openForWriting() ) {
+      msg << "You cannot create the file "
+          << aFile.getName()
+          << ". Check the directory existance and access rights";
     }
+    aFile.remove();
+  }
+
+  if ( !msg.empty() )
+  {
+    msg << ".";
+    THROW_SALOME_CORBA_EXCEPTION(msg.c_str(), SALOME::BAD_PARAM);
   }
 }
 
@@ -2716,13 +3025,13 @@ void SMESH_Mesh_i::ExportToMEDX (const char*        file,
     _preMeshInfo->FullLoadFromFile();
 
   string aMeshName = prepareMeshNameAndGroups(file, overwrite);
+  _impl->ExportMED( file, aMeshName.c_str(), auto_groups, theVersion, 0, autoDimension );
+
   TPythonDump() << SMESH::SMESH_Mesh_var(_this()) << ".ExportToMEDX( r'"
                 << file << "', " << auto_groups << ", "
                 << theVersion << ", " << overwrite << ", "
                 << autoDimension << " )";
 
-  _impl->ExportMED( file, aMeshName.c_str(), auto_groups, theVersion, 0, autoDimension );
-
   SMESH_CATCH( SMESH::throwCorbaException );
 }
 
@@ -2850,20 +3159,65 @@ void SMESH_Mesh_i::ExportSTL (const char *file, const bool isascii)
  */
 //================================================================================
 
-void SMESH_Mesh_i::ExportPartToMED(::SMESH::SMESH_IDSource_ptr meshPart,
-                                   const char*                 file,
-                                   CORBA::Boolean              auto_groups,
-                                   ::SMESH::MED_VERSION        version,
-                                   ::CORBA::Boolean            overwrite,
-                                   ::CORBA::Boolean            autoDimension)
+void SMESH_Mesh_i::ExportPartToMED(SMESH::SMESH_IDSource_ptr meshPart,
+                                   const char*               file,
+                                   CORBA::Boolean            auto_groups,
+                                   SMESH::MED_VERSION        version,
+                                   CORBA::Boolean            overwrite,
+                                   CORBA::Boolean            autoDimension,
+                                   const GEOM::ListOfFields& fields,
+                                   const char*               geomAssocFields)
   throw (SALOME::SALOME_Exception)
 {
-  Unexpect aCatch(SALOME_SalomeException);
-  TPythonDump pyDump;
+  SMESH_TRY;
+  if ( _preMeshInfo )
+    _preMeshInfo->FullLoadFromFile();
 
-  if ( SMESH_Mesh_i * mesh = SMESH::DownCast< SMESH_Mesh_i* >( meshPart ))
+  // check fields
+  bool have0dField = false;
+  if ( fields.length() > 0 )
   {
-    mesh->ExportToMEDX( file, auto_groups, version, autoDimension );
+    GEOM::GEOM_Object_var shapeToMesh = GetShapeToMesh();
+    if ( shapeToMesh->_is_nil() )
+      THROW_SALOME_CORBA_EXCEPTION( "No shape to mesh", SALOME::INTERNAL_ERROR );
+
+    for ( size_t i = 0; i < fields.length(); ++i )
+    {
+      if ( fields[i]->GetDataType() == GEOM::FDT_String )
+        THROW_SALOME_CORBA_EXCEPTION
+          ( "Export of string fields is not supported", SALOME::BAD_PARAM);
+      GEOM::GEOM_Object_var fieldShape = fields[i]->GetShape();
+      if ( fieldShape->_is_nil() )
+        THROW_SALOME_CORBA_EXCEPTION( "Null shape under a field", SALOME::INTERNAL_ERROR );
+      if ( !fieldShape->IsSame( shapeToMesh ) )
+        THROW_SALOME_CORBA_EXCEPTION
+          ( "Field defined not on shape", SALOME::BAD_PARAM);
+      if ( fields[i]->GetDimension() == 0 )
+        have0dField = true;
+    }
+    if ( geomAssocFields )
+      for ( int i = 0; geomAssocFields[i]; ++i )
+        switch ( geomAssocFields[i] ) {
+        case 'v':case 'e':case 'f':case 's': break;
+        case 'V':case 'E':case 'F':case 'S': break;
+        default: THROW_SALOME_CORBA_EXCEPTION
+            ( "geomAssocFields can include only [vefs] characters", SALOME::BAD_PARAM);
+        }
+  }
+
+  SMESHDS_Mesh* meshDS = _impl->GetMeshDS();
+
+  // write mesh
+
+  string aMeshName = "Mesh";
+  SMESHUtils::Deleter< SMESH_MeshPartDS > tmpDSDeleter(0);
+  if ( CORBA::is_nil( meshPart ) ||
+       SMESH::DownCast< SMESH_Mesh_i* >( meshPart ))
+  {
+    aMeshName = prepareMeshNameAndGroups(file, overwrite);
+    _impl->ExportMED( file, aMeshName.c_str(), auto_groups,
+                      version, 0, autoDimension, /*addODOnVertices=*/have0dField);
+    meshDS = _impl->GetMeshDS();
   }
   else
   {
@@ -2872,7 +3226,6 @@ void SMESH_Mesh_i::ExportPartToMED(::SMESH::SMESH_IDSource_ptr meshPart,
 
     PrepareForWriting(file, overwrite);
 
-    string aMeshName = "Mesh";
     SALOMEDS::Study_var aStudy = _gen_i->GetCurrentStudy();
     if ( !aStudy->_is_nil() ) {
       SALOMEDS::SObject_wrap SO = _gen_i->ObjectToSObject( aStudy, meshPart );
@@ -2881,13 +3234,287 @@ void SMESH_Mesh_i::ExportPartToMED(::SMESH::SMESH_IDSource_ptr meshPart,
         aMeshName = name;
       }
     }
-    SMESH_MeshPartDS partDS( meshPart );
-    _impl->ExportMED( file, aMeshName.c_str(), auto_groups, version, &partDS, autoDimension );
+    SMESH_MeshPartDS* partDS = new SMESH_MeshPartDS( meshPart );
+    _impl->ExportMED( file, aMeshName.c_str(), auto_groups,
+                      version, partDS, autoDimension, /*addODOnVertices=*/have0dField);
+    meshDS = tmpDSDeleter._obj = partDS;
+  }
+
+  // write fields
+
+  if ( _impl->HasShapeToMesh() )
+  {
+    DriverMED_W_Field fieldWriter;
+    fieldWriter.SetFile( file );
+    fieldWriter.SetMeshName( aMeshName );
+    fieldWriter.AddODOnVertices( have0dField );
+
+    exportMEDFields( fieldWriter, meshDS, fields, geomAssocFields );
   }
-  pyDump << SMESH::SMESH_Mesh_var(_this()) << ".ExportPartToMED( "
-         << meshPart << ", r'" << file << "', "
-         << auto_groups << ", " << version << ", " << overwrite << ", "
-         << autoDimension << " )";
+
+  // dump
+  GEOM::ListOfGBO_var goList = new GEOM::ListOfGBO;
+  goList->length( fields.length() );
+  for ( size_t i = 0; i < fields.length(); ++i )
+  {
+    GEOM::GEOM_BaseObject_var gbo = GEOM::GEOM_BaseObject::_narrow( fields[i] );
+    goList[i] = gbo;
+  }
+  TPythonDump() << _this() << ".ExportPartToMED( "
+                << meshPart << ", r'" << file << "', "
+                << auto_groups << ", " << version << ", " << overwrite << ", "
+                << autoDimension << ", " << goList
+                << ", '" << ( geomAssocFields ? geomAssocFields : "" ) << "'" << " )";
+
+  SMESH_CATCH( SMESH::throwCorbaException );
+}
+
+//================================================================================
+/*!
+ * Write GEOM fields to MED file
+ */
+//================================================================================
+
+void SMESH_Mesh_i::exportMEDFields( DriverMED_W_Field&        fieldWriter,
+                                    SMESHDS_Mesh*             meshDS,
+                                    const GEOM::ListOfFields& fields,
+                                    const char*               geomAssocFields)
+{
+#define METH "SMESH_Mesh_i::exportMEDFields() "
+
+  if (( fields.length() < 1 ) &&
+      ( !geomAssocFields || !geomAssocFields[0] ))
+    return;
+
+  std::vector< double > dblVals( meshDS->MaxShapeIndex()+1 );
+  std::vector< int >    intVals( meshDS->MaxShapeIndex()+1 );
+  std::vector< int >    subIdsByDim[ 4 ];
+  const double noneDblValue = 0.;
+  const double noneIntValue = 0;
+
+  for ( size_t iF = 0; iF < fields.length(); ++iF )
+  {
+    // set field data
+
+    int dim = fields[ iF ]->GetDimension();
+    SMDSAbs_ElementType elemType;
+    TopAbs_ShapeEnum    shapeType;
+    switch ( dim ) {
+    case 0: elemType = SMDSAbs_0DElement; shapeType = TopAbs_VERTEX; break;
+    case 1: elemType = SMDSAbs_Edge;      shapeType = TopAbs_EDGE;   break;
+    case 2: elemType = SMDSAbs_Face;      shapeType = TopAbs_FACE;   break;
+    case 3: elemType = SMDSAbs_Volume;    shapeType = TopAbs_SOLID;  break;
+    default:
+      continue; // skip fields on whole shape
+    }
+    GEOM::field_data_type dataType = fields[ iF ]->GetDataType();
+    if ( dataType == GEOM::FDT_String )
+      continue;
+    GEOM::ListOfLong_var stepIDs = fields[ iF ]->GetSteps();
+    if ( stepIDs->length() < 1 )
+      continue;
+    GEOM::string_array_var comps = fields[ iF ]->GetComponents();
+    if ( comps->length() < 1 )
+      continue;
+    CORBA::String_var       name = fields[ iF ]->GetName();
+
+    if ( !fieldWriter.Set( meshDS,
+                           name.in(),
+                           elemType,
+                           comps->length(),
+                           /*isIntData=*/false ))//( dataType == GEOM::FDT_Int )))
+      continue;
+
+    for ( size_t iC = 0; iC < comps->length(); ++iC )
+      fieldWriter.SetCompName( iC, comps[ iC ].in() );
+
+    // find sub-shape IDs
+
+    std::vector< int >& subIds = subIdsByDim[ dim ];
+    if ( subIds.empty() )
+      for ( int id = 1; id <= meshDS->MaxShapeIndex(); ++id )
+        if ( meshDS->IndexToShape( id ).ShapeType() == shapeType )
+          subIds.push_back( id );
+
+    // write steps
+
+    SMDS_ElemIteratorPtr elemIt = fieldWriter.GetOrderedElems();
+    if ( !elemIt )
+      continue;
+
+    for ( size_t iS = 0; iS < stepIDs->length(); ++iS )
+    {
+      GEOM::GEOM_FieldStep_var step = fields[ iF ]->GetStep( stepIDs[ iS ]);
+      if ( step->_is_nil() )
+        continue;
+
+      CORBA::Long stamp = step->GetStamp();
+      CORBA::Long id    = step->GetID();
+      fieldWriter.SetDtIt( int( stamp ), int( id ));
+
+      // fill dblVals or intVals
+      switch ( dataType )
+      {
+      case GEOM::FDT_Double:
+      {
+        GEOM::GEOM_DoubleFieldStep_var dblStep = GEOM::GEOM_DoubleFieldStep::_narrow( step );
+        if ( dblStep->_is_nil() ) continue;
+        GEOM::ListOfDouble_var vv = dblStep->GetValues();
+        if ( vv->length() != subIds.size() )
+          THROW_SALOME_CORBA_EXCEPTION( METH "BUG: wrong nb subIds", SALOME::INTERNAL_ERROR );
+        for ( size_t i = 0; i < vv->length(); ++i )
+          dblVals[ subIds[ i ]] = vv[ i ];
+        break;
+      }
+      case GEOM::FDT_Int:
+      {
+        GEOM::GEOM_IntFieldStep_var intStep = GEOM::GEOM_IntFieldStep::_narrow( step );
+        if ( intStep->_is_nil() ) continue;
+        GEOM::ListOfLong_var vv = intStep->GetValues();
+        if ( vv->length() != subIds.size() )
+          THROW_SALOME_CORBA_EXCEPTION( METH "BUG: wrong nb subIds", SALOME::INTERNAL_ERROR );
+        for ( size_t i = 0; i < vv->length(); ++i )
+          intVals[ subIds[ i ]] = (int) vv[ i ];
+        break;
+      }
+      case GEOM::FDT_Bool:
+      {
+        GEOM::GEOM_BoolFieldStep_var boolStep = GEOM::GEOM_BoolFieldStep::_narrow( step );
+        if ( boolStep->_is_nil() ) continue;
+        GEOM::short_array_var vv = boolStep->GetValues();
+        if ( vv->length() != subIds.size() )
+          THROW_SALOME_CORBA_EXCEPTION( METH "BUG: wrong nb subIds", SALOME::INTERNAL_ERROR );
+        for ( size_t i = 0; i < vv->length(); ++i )
+          intVals[ subIds[ i ]] = (int) vv[ i ];
+        break;
+      }
+      default: continue;
+      }
+
+      // pass values to fieldWriter
+      elemIt = fieldWriter.GetOrderedElems();
+      if ( dataType == GEOM::FDT_Double )
+        while ( elemIt->more() )
+        {
+          const SMDS_MeshElement* e = elemIt->next();
+          const int shapeID = e->getshapeId();
+          if ( shapeID < 1 || shapeID >= (int) dblVals.size() )
+            fieldWriter.AddValue( noneDblValue );
+          else
+            fieldWriter.AddValue( dblVals[ shapeID ]);
+        }
+      else
+        while ( elemIt->more() )
+        {
+          const SMDS_MeshElement* e = elemIt->next();
+          const int shapeID = e->getshapeId();
+          if ( shapeID < 1 || shapeID >= (int) intVals.size() )
+            fieldWriter.AddValue( (double) noneIntValue );
+          else
+            fieldWriter.AddValue( (double) intVals[ shapeID ]);
+        }
+
+      // write a step
+      fieldWriter.Perform();
+      SMESH_ComputeErrorPtr res = fieldWriter.GetError();
+      if ( res && res->IsKO() )
+      {
+        if ( res->myComment.empty() )
+        { THROW_SALOME_CORBA_EXCEPTION( METH "Fatal error", SALOME::INTERNAL_ERROR ); }
+        else
+        { THROW_SALOME_CORBA_EXCEPTION( res->myComment.c_str(), SALOME::INTERNAL_ERROR ); }
+      }
+
+    } // loop on steps
+  } // loop on fields
+
+  if ( !geomAssocFields || !geomAssocFields[0] )
+    return;
+
+  // write geomAssocFields
+
+  std::vector< int > shapeDim( TopAbs_SHAPE + 1 );
+  shapeDim[ TopAbs_COMPOUND  ] = 3;
+  shapeDim[ TopAbs_COMPSOLID ] = 3;
+  shapeDim[ TopAbs_SOLID     ] = 3;
+  shapeDim[ TopAbs_SHELL     ] = 2;
+  shapeDim[ TopAbs_FACE      ] = 2;
+  shapeDim[ TopAbs_WIRE      ] = 1;
+  shapeDim[ TopAbs_EDGE      ] = 1;
+  shapeDim[ TopAbs_VERTEX    ] = 0;
+  shapeDim[ TopAbs_SHAPE     ] = 3;
+
+  for ( int iF = 0; geomAssocFields[ iF ]; ++iF )
+  {
+    std::vector< std::string > compNames;
+    switch ( geomAssocFields[ iF ]) {
+    case 'v': case 'V':
+      fieldWriter.Set( meshDS, "_vertices_", SMDSAbs_Node, /*nbComps=*/2, /*isInt=*/false );
+      compNames.push_back( "dim" );
+      break;
+    case 'e': case 'E':
+      fieldWriter.Set( meshDS, "_edges_", SMDSAbs_Edge, /*nbComps=*/1, /*isInt=*/false );
+      break;
+    case 'f': case 'F':
+      fieldWriter.Set( meshDS, "_faces_", SMDSAbs_Face, /*nbComps=*/1, /*isInt=*/false );
+      break;
+    case 's': case 'S':
+      fieldWriter.Set( meshDS, "_solids_", SMDSAbs_Volume, /*nbComps=*/1, /*isInt=*/false );
+      break;
+    default: continue;
+    }
+    compNames.push_back( "id" );
+    for ( size_t iC = 0; iC < compNames.size(); ++iC )
+      fieldWriter.SetCompName( iC, compNames[ iC ].c_str() );
+
+    fieldWriter.SetDtIt( -1, -1 );
+
+    SMDS_ElemIteratorPtr elemIt = fieldWriter.GetOrderedElems();
+    if ( !elemIt )
+      continue;
+
+    if ( compNames.size() == 2 ) // _vertices_
+      while ( elemIt->more() )
+      {
+        const SMDS_MeshElement* e = elemIt->next();
+        const int shapeID = e->getshapeId();
+        if ( shapeID < 1 )
+        {
+          fieldWriter.AddValue( (double) -1 );
+          fieldWriter.AddValue( (double) -1 );
+        }
+        else
+        {
+          const TopoDS_Shape& S = meshDS->IndexToShape( shapeID );
+          fieldWriter.AddValue( (double) ( S.IsNull() ? -1 : shapeDim[ S.ShapeType() ]));
+          fieldWriter.AddValue( (double) shapeID );
+        }
+      }
+    else
+      while ( elemIt->more() )
+      {
+        const SMDS_MeshElement* e = elemIt->next();
+        const int shapeID = e->getshapeId();
+        if ( shapeID < 1 )
+          fieldWriter.AddValue( (double) -1 );
+        else
+          fieldWriter.AddValue( (double) shapeID );
+      }
+
+    // write a step
+    fieldWriter.Perform();
+    SMESH_ComputeErrorPtr res = fieldWriter.GetError();
+    if ( res && res->IsKO() )
+    {
+      if ( res->myComment.empty() )
+      { THROW_SALOME_CORBA_EXCEPTION( METH "Fatal error", SALOME::INTERNAL_ERROR ); }
+      else
+      { THROW_SALOME_CORBA_EXCEPTION( res->myComment.c_str(), SALOME::INTERNAL_ERROR ); }
+    }
+
+  } // loop on geomAssocFields
+
+#undef METH
 }
 
 //================================================================================
@@ -2976,8 +3603,16 @@ void SMESH_Mesh_i::ExportCGNS(::SMESH::SMESH_IDSource_ptr meshPart,
 
   PrepareForWriting(file,overwrite);
 
+  std::string meshName("");
+  SALOMEDS::Study_var study = _gen_i->GetCurrentStudy();
+  SALOMEDS::SObject_wrap so = _gen_i->ObjectToSObject( study, meshPart );
+  if ( !so->_is_nil() )
+  {
+    CORBA::String_var name = so->GetName();
+    meshName = name.in();
+  }
   SMESH_MeshPartDS partDS( meshPart );
-  _impl->ExportCGNS(file, &partDS);
+  _impl->ExportCGNS(file, &partDS, meshName.c_str() );
 
   TPythonDump() << SMESH::SMESH_Mesh_var(_this()) << ".ExportCGNS( "
                 << meshPart<< ", r'" << file << "', " << overwrite << ")";
@@ -3130,7 +3765,7 @@ CORBA::Long SMESH_Mesh_i::NbBiQuadQuadrangles()throw(SALOME::SALOME_Exception)
   return _impl->NbBiQuadQuadrangles();
 }
 
-CORBA::Long SMESH_Mesh_i::NbPolygons()throw(SALOME::SALOME_Exception)
+CORBA::Long SMESH_Mesh_i::NbPolygons() throw(SALOME::SALOME_Exception)
 {
   Unexpect aCatch(SALOME_SalomeException);
   if ( _preMeshInfo )
@@ -3139,6 +3774,15 @@ CORBA::Long SMESH_Mesh_i::NbPolygons()throw(SALOME::SALOME_Exception)
   return _impl->NbPolygons();
 }
 
+CORBA::Long SMESH_Mesh_i::NbPolygonsOfOrder(SMESH::ElementOrder order) throw(SALOME::SALOME_Exception)
+{
+  Unexpect aCatch(SALOME_SalomeException);
+  if ( _preMeshInfo )
+    return _preMeshInfo->NbPolygons((SMDSAbs_ElementOrder) order);
+
+  return _impl->NbPolygons((SMDSAbs_ElementOrder)order);
+}
+
 CORBA::Long SMESH_Mesh_i::NbFacesOfOrder(SMESH::ElementOrder order)
   throw(SALOME::SALOME_Exception)
 {
@@ -3467,6 +4111,25 @@ SMESH::EntityType SMESH_Mesh_i::GetElementGeomType( const CORBA::Long id )
   return ( SMESH::EntityType ) e->GetEntityType();
 }
 
+//=============================================================================
+/*!
+ *
+ */
+//=============================================================================
+
+SMESH::GeometryType SMESH_Mesh_i::GetElementShape( const CORBA::Long id )
+  throw (SALOME::SALOME_Exception)
+{
+  if ( _preMeshInfo )
+    _preMeshInfo->FullLoadFromFile();
+
+  const SMDS_MeshElement* e = _impl->GetMeshDS()->FindElement(id);
+  if ( !e )
+    THROW_SALOME_CORBA_EXCEPTION( "invalid element id", SALOME::BAD_PARAM );
+
+  return ( SMESH::GeometryType ) e->GetGeomType();
+}
+
 //=============================================================================
 /*!
  * Returns ID of elements for given submesh
@@ -3663,17 +4326,11 @@ SMESH::long_array* SMESH_Mesh_i::GetNodeInverseElements(const CORBA::Long id)
 
   // find inverse elements
   SMDS_ElemIteratorPtr eIt = aNode->GetInverseElementIterator();
-  TColStd_SequenceOfInteger IDs;
-  while(eIt->more()) {
+  aResult->length( aNode->NbInverseElements() );  
+  for( int i = 0; eIt->more(); ++i )
+  {
     const SMDS_MeshElement* elem = eIt->next();
-    IDs.Append(elem->GetID());
-  }
-  if(IDs.Length()>0) {
-    aResult->length(IDs.Length());
-    int i = 1;
-    for(; i<=IDs.Length(); i++) {
-      aResult[i-1] = IDs.Value(i);
-    }
+    aResult[ i ] = elem->GetID();
   }
   return aResult._retn();
 }
@@ -4016,7 +4673,7 @@ SMESH::long_array* SMESH_Mesh_i::GetElemFaceNodes(CORBA::Long  elemId,
       {
         aResult->length( vtool.NbFaceNodes( faceIndex ));
         const SMDS_MeshNode** nn = vtool.GetFaceNodes( faceIndex );
-        for ( int i = 0; i < aResult->length(); ++i )
+        for ( CORBA::ULong i = 0; i < aResult->length(); ++i )
           aResult[ i ] = nn[ i ]->GetID();
       }
     }
@@ -4029,7 +4686,8 @@ SMESH::long_array* SMESH_Mesh_i::GetElemFaceNodes(CORBA::Long  elemId,
 //purpose  : Returns three components of normal of given mesh face.
 //=======================================================================
 
-SMESH::double_array* SMESH_Mesh_i::GetFaceNormal(CORBA::Long  elemId)
+SMESH::double_array* SMESH_Mesh_i::GetFaceNormal(CORBA::Long    elemId,
+                                                 CORBA::Boolean normalized)
 {
   if ( _preMeshInfo )
     _preMeshInfo->FullLoadFromFile();
@@ -4039,7 +4697,7 @@ SMESH::double_array* SMESH_Mesh_i::GetFaceNormal(CORBA::Long  elemId)
   if ( SMESHDS_Mesh* mesh = _impl->GetMeshDS() )
   {
     gp_XYZ normal;
-    if ( SMESH_MeshAlgos::FaceNormal( mesh->FindElement(elemId), normal, /*normalized=*/true ))
+    if ( SMESH_MeshAlgos::FaceNormal( mesh->FindElement(elemId), normal, normalized ))
     {
       aResult->length( 3 );
       aResult[ 0 ] = normal.X();
@@ -4064,7 +4722,7 @@ CORBA::Long SMESH_Mesh_i::FindElementByNodes(const SMESH::long_array& nodes)
   if ( SMESHDS_Mesh* mesh = _impl->GetMeshDS() )
   {
     vector< const SMDS_MeshNode * > nn( nodes.length() );
-    for ( int i = 0; i < nodes.length(); ++i )
+    for ( CORBA::ULong i = 0; i < nodes.length(); ++i )
       if ( !( nn[i] = mesh->FindNode( nodes[i] )))
         return elemID;
 
@@ -4202,6 +4860,7 @@ SMESH_Mesh_i::MakeGroupsOfBadInputElements( int         theSubShapeID,
     THROW_SALOME_CORBA_EXCEPTION( "empty group name",SALOME::BAD_PARAM );
 
   SMESH::ListOfGroups_var groups = new SMESH::ListOfGroups;
+  ::SMESH_MeshEditor::ElemFeatures elemType;
 
   // submesh by subshape id
   if ( !_impl->HasShapeToMesh() ) theSubShapeID = 1;
@@ -4234,7 +4893,7 @@ SMESH_Mesh_i::MakeGroupsOfBadInputElements( int         theSubShapeID,
           if ( elem )
           {
             ::SMESH_MeshEditor editor( _impl );
-            elem = editor.AddElement( nodes, elem->GetType(), elem->IsPoly() );
+            elem = editor.AddElement( nodes, elemType.Init( elem ));
           }
         }
         if ( elem )
@@ -4261,7 +4920,6 @@ SMESH_Mesh_i::MakeGroupsOfBadInputElements( int         theSubShapeID,
           SALOMEDS::SObject_wrap aSO =
             _gen_i->PublishGroup( study, mesh, groups[ iG ],
                                  GEOM::GEOM_Object::_nil(), theGroupName);
-          aSO->_is_nil(); // avoid "unused variable" warning
         }
         SMESH_GroupBase_i* grp_i = SMESH::DownCast< SMESH_GroupBase_i* >( groups[ iG ]);
         if ( !grp_i ) continue;
@@ -4453,11 +5111,11 @@ SMESH::string_array* SMESH_Mesh_i::GetLastParameters()
     SALOMEDS::Study_var    aStudy = gen->GetCurrentStudy();
     if ( !aStudy->_is_nil()) {
       SALOMEDS::ListOfListOfStrings_var aSections = aStudy->ParseVariables(aParameters); 
-      if(aSections->length() > 0) {
-        SALOMEDS::ListOfStrings aVars = aSections[aSections->length()-1];
-        aResult->length(aVars.length());
-        for(int i = 0;i < aVars.length();i++)
-          aResult[i] = CORBA::string_dup( aVars[i]);
+      if ( aSections->length() > 0 ) {
+        SALOMEDS::ListOfStrings aVars = aSections[ aSections->length() - 1 ];
+        aResult->length( aVars.length() );
+        for ( CORBA::ULong i = 0;i < aVars.length(); i++ )
+          aResult[i] = CORBA::string_dup( aVars[i] );
       }
     }
   }
@@ -4483,6 +5141,8 @@ SMESH::array_of_ElementType* SMESH_Mesh_i::GetTypes()
   if (_impl->NbVolumes())    types[nbTypes++] = SMESH::VOLUME;
   if (_impl->Nb0DElements()) types[nbTypes++] = SMESH::ELEM0D;
   if (_impl->NbBalls())      types[nbTypes++] = SMESH::BALL;
+  if (_impl->NbNodes() &&
+      nbTypes == 0 )         types[nbTypes++] = SMESH::NODE;
   types->length( nbTypes );
 
   return types._retn();
@@ -4572,6 +5232,37 @@ void SMESH_Mesh_i::CollectMeshInfo(const SMDS_ElemIteratorPtr theItr,
   while (theItr->more())
     theInfo[ theItr->next()->GetEntityType() ]++;
 }
+//=============================================================================
+/*
+ * Returns mesh unstructed grid information.
+ */
+//=============================================================================
+
+SALOMEDS::TMPFile* SMESH_Mesh_i::GetVtkUgStream()
+{
+  SALOMEDS::TMPFile_var SeqFile;
+  if ( SMESHDS_Mesh* aMeshDS = _impl->GetMeshDS() ) {
+    SMDS_UnstructuredGrid* aGrid = aMeshDS->getGrid();
+    if(aGrid) {
+      vtkUnstructuredGridWriter* aWriter = vtkUnstructuredGridWriter::New();
+      aWriter->WriteToOutputStringOn();
+      aWriter->SetInputData(aGrid);
+      aWriter->SetFileTypeToBinary();
+      aWriter->Write();
+      char* str = aWriter->GetOutputString();
+      int size = aWriter->GetOutputStringLength();
+      
+      //Allocate octect buffer of required size
+      CORBA::Octet* OctetBuf = SALOMEDS::TMPFile::allocbuf(size);
+      //Copy ostrstream content to the octect buffer
+      memcpy(OctetBuf, str, size);
+      //Create and return TMPFile
+      SeqFile = new SALOMEDS::TMPFile(size, size, OctetBuf, 1);
+      aWriter->Delete();
+    }
+  }
+  return SeqFile._retn();
+}
 
 //=============================================================================
 namespace /* Iterators used in SMESH_Mesh_i::GetElements(SMESH::SMESH_IDSource_var obj,
@@ -4655,7 +5346,7 @@ namespace /* Iterators used in SMESH_Mesh_i::GetElements(SMESH::SMESH_IDSource_v
           _elem = _mesh->FindNode( *_idPtr++ );
         }
         else if ((_elem = _mesh->FindElement( *_idPtr++ )) &&
-                 _elem->GetType() != _type )
+                 (_elem->GetType() != _type && _type != SMDSAbs_All ))
         {
           _elem = 0;
         }
@@ -4716,7 +5407,7 @@ SMDS_ElemIteratorPtr SMESH_Mesh_i::GetElements(SMESH::SMESH_IDSource_ptr theObje
                                                SMESH::ElementType        theType)
 {
   SMDS_ElemIteratorPtr  elemIt;
-  bool                  typeOK = false;
+  bool                  typeOK = ( theType == SMESH::ALL );
   SMDSAbs_ElementType elemType = SMDSAbs_ElementType( theType );
 
   SMESH::SMESH_Mesh_var meshVar = theObject->GetMesh();
@@ -4735,7 +5426,7 @@ SMDS_ElemIteratorPtr SMESH_Mesh_i::GetElements(SMESH::SMESH_IDSource_ptr theObje
     if ( sm )
     {
       elemIt = sm->GetElements();
-      if ( elemType != SMDSAbs_Node )
+      if ( elemType != SMDSAbs_Node && elemType != SMDSAbs_All )
       {
         typeOK = ( elemIt && elemIt->more() && elemIt->next()->GetType() == elemType );
         elemIt = typeOK ? sm->GetElements() : SMDS_ElemIteratorPtr();
@@ -4745,15 +5436,19 @@ SMDS_ElemIteratorPtr SMESH_Mesh_i::GetElements(SMESH::SMESH_IDSource_ptr theObje
   else if ( SMESH_GroupBase_i* group_i = SMESH::DownCast<SMESH_GroupBase_i*>( theObject ))
   {
     SMESHDS_GroupBase* groupDS = group_i->GetGroupDS();
-    if ( groupDS && ( groupDS->GetType() == elemType || elemType == SMDSAbs_Node ))
+    if ( groupDS && ( elemType == groupDS->GetType()  ||
+                      elemType == SMDSAbs_Node ||
+                      elemType == SMDSAbs_All ))
     {
       elemIt = groupDS->GetElements();
-      typeOK = ( groupDS->GetType() == elemType );
+      typeOK = ( groupDS->GetType() == elemType || elemType == SMDSAbs_All );
     }
   }
   else if ( SMESH::Filter_i* filter_i = SMESH::DownCast<SMESH::Filter_i*>( theObject ))
   {
-    if ( filter_i->GetElementType() == theType || elemType == SMDSAbs_Node )
+    if ( filter_i->GetElementType() == theType ||
+         elemType == SMDSAbs_Node ||
+         elemType == SMDSAbs_All)
     {
       SMESH::Predicate_i* pred_i = filter_i->GetPredicate_i();
       if ( pred_i && pred_i->GetPredicate() )
@@ -4761,7 +5456,7 @@ SMDS_ElemIteratorPtr SMESH_Mesh_i::GetElements(SMESH::SMESH_IDSource_ptr theObje
         SMDSAbs_ElementType filterType = SMDSAbs_ElementType( filter_i->GetElementType() );
         SMDS_ElemIteratorPtr allElemIt = meshDS->elementsIterator( filterType );
         elemIt = SMDS_ElemIteratorPtr( new PredicateIterator( allElemIt, pred_i->GetPredicate() ));
-        typeOK = ( filterType == elemType );
+        typeOK = ( filterType == elemType || elemType == SMDSAbs_All );
       }
     }
   }
@@ -4769,7 +5464,7 @@ SMDS_ElemIteratorPtr SMESH_Mesh_i::GetElements(SMESH::SMESH_IDSource_ptr theObje
   {
     SMESH::array_of_ElementType_var types = theObject->GetTypes();
     const bool                    isNodes = ( types->length() == 1 && types[0] == SMESH::NODE );
-    if ( isNodes && elemType != SMDSAbs_Node )
+    if ( isNodes && elemType != SMDSAbs_Node && elemType != SMDSAbs_All )
       return elemIt;
     if ( SMESH_MeshEditor_i::IsTemporaryIDSource( theObject ))
     {
@@ -4782,7 +5477,7 @@ SMDS_ElemIteratorPtr SMESH_Mesh_i::GetElements(SMESH::SMESH_IDSource_ptr theObje
       SMESH::long_array_var ids = theObject->GetIDs();
       elemIt = SMDS_ElemIteratorPtr( new IDSourceIterator( meshDS, ids._retn(), elemType ));
     }
-    typeOK = ( isNodes == ( elemType == SMDSAbs_Node ));
+    typeOK = ( isNodes == ( elemType == SMDSAbs_Node )) || ( elemType == SMDSAbs_All );
   }
 
   if ( elemIt && elemIt->more() && !typeOK )
@@ -4942,7 +5637,7 @@ class SMESH_DimHyp
       if ( find( theOther->_hypotheses.begin(), otheEndIt, *hypIt ) != otheEndIt )
         nbSame++;
     // the submeshes are concurrent if their algorithms has different parameters
-    return nbSame != theOther->_hypotheses.size() - 1;
+    return nbSame != (int)theOther->_hypotheses.size() - 1;
   }
 
   // Return true if algorithm of this SMESH_DimHyp is used if no
@@ -5080,8 +5775,37 @@ void findCommonSubMesh (list<const SMESH_subMesh*>& theSubMeshList,
   //theCommon.insert( theSubMesh );
 }
 
+//-----------------------------------------------------------------------------
+bool isSubMeshInList ( int smID, const TListOfListOfInt& smLists )
+{
+  TListOfListOfInt::const_iterator listsIt = smLists.begin();
+  for ( ; listsIt != smLists.end(); ++listsIt )
+  {
+    const TListOfInt& smIDs = *listsIt;
+    if ( std::find( smIDs.begin(), smIDs.end(), smID ) != smIDs.end() )
+      return true;
+  }
+  return false;
+}
+
 } // namespace
 
+//=============================================================================
+/*!
+ * \brief Return \c true if a meshing order not yet set for a concurrent sub-mesh
+ */
+//=============================================================================
+
+CORBA::Boolean SMESH_Mesh_i::IsUnorderedSubMesh(CORBA::Long submeshID)
+{
+  TListOfListOfInt anOrder = GetImpl().GetMeshOrder(); // already defined order
+  if ( isSubMeshInList( submeshID, anOrder ))
+    return false;
+
+  TListOfListOfInt allConurrent = findConcurrentSubMeshes();
+  return isSubMeshInList( submeshID, allConurrent );
+}
+
 //=============================================================================
 /*!
  * \brief Return submesh objects list in meshing order
@@ -5095,14 +5819,37 @@ SMESH::submesh_array_array* SMESH_Mesh_i::GetMeshOrder()
   SMESHDS_Mesh* aMeshDS = _impl->GetMeshDS();
   if ( !aMeshDS )
     return aResult._retn();
-  
-  ::SMESH_Mesh& mesh = GetImpl();
-  TListOfListOfInt anOrder = mesh.GetMeshOrder(); // is there already defined order?
-  if ( !anOrder.size() ) {
 
+  TListOfListOfInt      anOrder = GetImpl().GetMeshOrder(); // already defined order
+  TListOfListOfInt allConurrent = findConcurrentSubMeshes();
+  anOrder.splice( anOrder.end(), allConurrent );
+
+  int listIndx = 0;
+  TListOfListOfInt::iterator listIt = anOrder.begin();
+  for(; listIt != anOrder.end(); listIt++, listIndx++ )
+    unionLists( *listIt,  anOrder, listIndx + 1 );
+
+  // convert submesh ids into interface instances
+  //  and dump command into python
+  convertMeshOrder( anOrder, aResult, false );
+
+  return aResult._retn();
+}
+
+//=============================================================================
+/*!
+ * \brief Finds concurrent sub-meshes
+ */
+//=============================================================================
+
+TListOfListOfInt SMESH_Mesh_i::findConcurrentSubMeshes()
+{
+  TListOfListOfInt anOrder;
+  ::SMESH_Mesh& mesh = GetImpl();
+  {
     // collect submeshes and detect concurrent algorithms and hypothesises
     TDimHypList dimHypListArr[4]; // dimHyp list for each shape dimension
-    
+
     map<int, ::SMESH_subMesh*>::iterator i_sm = _mapSubMesh.begin();
     for ( ; i_sm != _mapSubMesh.end(); i_sm++ ) {
       ::SMESH_subMesh* sm = (*i_sm).second;
@@ -5174,11 +5921,8 @@ SMESH::submesh_array_array* SMESH_Mesh_i::GetMeshOrder()
     for(; listIt != anOrder.end(); listIt++, listIndx++ )
       unionLists( *listIt,  anOrder, listIndx + 1 );
   }
-  // convert submesh ids into interface instances
-  //  and dump command into python
-  convertMeshOrder( anOrder, aResult, false );
 
-  return aResult._retn();
+  return anOrder;
 }
 
 //=============================================================================
@@ -5204,6 +5948,8 @@ SMESH::submesh_array_array* SMESH_Mesh_i::GetMeshOrder()
   {
     const SMESH::submesh_array& aSMArray = theSubMeshArray[i];
     TListOfInt subMeshIds;
+    if ( i > 0 )
+      aPythonDump << ", ";
     aPythonDump << "[ ";
     // Collect subMeshes which should be clear
     //  do it list-by-list, because modification of submesh order
@@ -5267,7 +6013,8 @@ void SMESH_Mesh_i::convertMeshOrder (const TListOfListOfInt&     theIdsOrder,
     SMESH::submesh_array_var aResSubSet = new SMESH::submesh_array();
     aResSubSet->length(aSubOrder.size());
     TListOfInt::const_iterator subIt = aSubOrder.begin();
-    for( int j = 0; subIt != aSubOrder.end(); subIt++ ) {
+    int j;
+    for( j = 0; subIt != aSubOrder.end(); subIt++ ) {
       if ( _mapSubMeshIor.find(*subIt) == _mapSubMeshIor.end() )
         continue;
       SMESH::SMESH_subMesh_var subMesh =
@@ -5281,7 +6028,8 @@ void SMESH_Mesh_i::convertMeshOrder (const TListOfListOfInt&     theIdsOrder,
     }
     if ( theIsDump )
       aPythonDump << " ]";
-    theResOrder[ listIndx++ ] = aResSubSet;
+    if ( j > 1 )
+      theResOrder[ listIndx++ ] = aResSubSet;
   }
   // correct number of lists
   theResOrder.length( listIndx );
@@ -5322,14 +6070,14 @@ SMESH_MeshPartDS::SMESH_MeshPartDS(SMESH::SMESH_IDSource_ptr meshPart):
     SMESH::array_of_ElementType_var types = meshPart->GetTypes();
     if ( types->length() == 1 && types[0] == SMESH::NODE ) // group of nodes
     {
-      for (int i=0; i < anIDs->length(); i++)
-        if ( const SMDS_MeshNode * n = _meshDS->FindNode(anIDs[i]))
+      for ( CORBA::ULong i=0; i < anIDs->length(); i++ )
+        if ( const SMDS_MeshNode * n = _meshDS->FindNode( anIDs[i] ))
           if ( _elements[ SMDSAbs_Node ].insert( n ).second )
             tmpInfo.Add( n );
     }
     else
     {
-      for (int i=0; i < anIDs->length(); i++)
+      for ( CORBA::ULong i=0; i < anIDs->length(); i++ )
         if ( const SMDS_MeshElement * e = _meshDS->FindElement(anIDs[i]))
           if ( _elements[ e->GetType() ].insert( e ).second )
           {
@@ -5345,6 +6093,8 @@ SMESH_MeshPartDS::SMESH_MeshPartDS(SMESH::SMESH_IDSource_ptr meshPart):
     }
     myInfo = tmpInfo;
 
+    ShapeToMesh( _meshDS->ShapeToMesh() );
+
     _meshDS = 0; // to enforce iteration on _elements and _nodes
   }
 }