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Merge branch 'occ/shaper2smesh'
[modules/smesh.git] / src / DriverMED / DriverMED_W_SMESHDS_Mesh.cxx
index aec74adc9d00b70e7c3a62ffdc8ceae7ed079313..30f3ac4a31223b8caaadccd4bba229b0aee15e02 100644 (file)
@@ -1,4 +1,4 @@
-// Copyright (C) 2007-2014  CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2019  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
 #include "MED_Factory.hxx"
 #include "MED_Utilities.hxx"
 #include "SMDS_IteratorOnIterators.hxx"
-#include "SMDS_MeshElement.hxx"
 #include "SMDS_MeshNode.hxx"
-#include "SMDS_PolyhedralVolumeOfNodes.hxx"
 #include "SMDS_SetIterator.hxx"
 #include "SMESHDS_Mesh.hxx"
+#include "MED_Common.hxx"
+
+#include <med.h>
+
+#include <BRep_Tool.hxx>
+#include <TopExp_Explorer.hxx>
+#include <TopoDS.hxx>
 
 #include <utilities.h>
 
@@ -48,7 +53,6 @@ using namespace MED;
 
 
 DriverMED_W_SMESHDS_Mesh::DriverMED_W_SMESHDS_Mesh():
-  myMedVersion(MED::eV2_2),
   myAllSubMeshes (false),
   myDoGroupOfNodes (false),
   myDoGroupOfEdges (false),
@@ -56,34 +60,43 @@ DriverMED_W_SMESHDS_Mesh::DriverMED_W_SMESHDS_Mesh():
   myDoGroupOfVolumes (false),
   myDoGroupOf0DElems(false),
   myDoGroupOfBalls(false),
-  myAutoDimension(true)
+  myAutoDimension(false),
+  myAddODOnVertices(false),
+  myDoAllInGroups(false),
+  myVersion(-1),
+  myZTolerance(-1.)
 {}
 
-void DriverMED_W_SMESHDS_Mesh::SetFile(const std::string& theFileName, 
-                                       MED::EVersion      theId)
-{
-  Driver_SMESHDS_Mesh::SetFile(theFileName);
-  myMedVersion = theId;
-}
-
-void DriverMED_W_SMESHDS_Mesh::SetFile(const std::string& theFileName)
+void DriverMED_W_SMESHDS_Mesh::SetFile(const std::string& theFileName, int theVersion)
 {
+  myVersion = theVersion;
   Driver_SMESHDS_Mesh::SetFile(theFileName);
 }
 
-string DriverMED_W_SMESHDS_Mesh::GetVersionString(const MED::EVersion theVersion, int theNbDigits)
+/*!
+ * MED version is either the latest available, or with an inferior minor,
+ * to ensure backward compatibility on writing med files.
+ */
+string DriverMED_W_SMESHDS_Mesh::GetVersionString(int theMinor, int theNbDigits)
 {
   TInt majeur, mineur, release;
-  majeur =  mineur = release = 0;
-//   if ( theVersion == eV2_1 )
-//     MED::GetVersionRelease<eV2_1>(majeur, mineur, release);
-//   else
-    MED::GetVersionRelease<eV2_2>(majeur, mineur, release);
+  majeur=MED_MAJOR_NUM;
+  mineur=MED_MINOR_NUM;
+  release=MED_RELEASE_NUM;
+  TInt imposedMineur = mineur;
+
+  if (theMinor < 0)
+    imposedMineur = mineur;
+  else if (theMinor > MED_MINOR_NUM)
+    imposedMineur = mineur;
+  else
+    imposedMineur = theMinor;
+
   ostringstream name;
   if ( theNbDigits > 0 )
     name << majeur;
   if ( theNbDigits > 1 )
-    name << "." << mineur;
+    name << "." << imposedMineur;
   if ( theNbDigits > 2 )
     name << "." << release;
   return name.str();
@@ -124,6 +137,32 @@ void DriverMED_W_SMESHDS_Mesh::AddGroupOfVolumes()
   myDoGroupOfVolumes = true;
 }
 
+void DriverMED_W_SMESHDS_Mesh::AddGroupOf0DElems()
+{
+  myDoGroupOf0DElems = true;
+}
+
+void DriverMED_W_SMESHDS_Mesh::AddGroupOfBalls()
+{
+  myDoGroupOfBalls = true;
+}
+
+//================================================================================
+/*!
+ * \brief Set up a flag to add all elements not belonging to any group to
+ *        some auxiliary group. This is needed for SMESH -> SAUVE -> SMESH conversion,
+ *        which since PAL0023285 reads only SAUVE elements belonging to any group,
+ *        and hence can lose some elements. That auxiliary group is ignored while
+ *        reading a MED file.
+ */
+//================================================================================
+
+void DriverMED_W_SMESHDS_Mesh::AddAllToGroup()
+{
+  myDoAllInGroups = true;
+}
+
+
 namespace
 {
   typedef double (SMDS_MeshNode::* TGetCoord)() const;
@@ -253,7 +292,6 @@ namespace
                           const SMDSAbs_ElementType   anElemType)
   {
     anElemFamMap.Clear();
-    //anElemFamMap.clear();
     list<DriverMED_FamilyPtr>::iterator aFamsIter = aFamilies.begin();
     while ( aFamsIter != aFamilies.end() )
     {
@@ -262,12 +300,11 @@ namespace
       }
       else {
         int aFamId = (*aFamsIter)->GetId();
-        const set<const SMDS_MeshElement *>& anElems = (*aFamsIter)->GetElements();
-        set<const SMDS_MeshElement *>::const_iterator anElemsIter = anElems.begin();
+        const ElementsSet&              anElems = (*aFamsIter)->GetElements();
+        ElementsSet::const_iterator anElemsIter = anElems.begin();
         for (; anElemsIter != anElems.end(); anElemsIter++)
         {
           anElemFamMap.Bind( (Standard_Address)*anElemsIter, aFamId );
-          //anElemFamMap[*anElemsIter] = aFamId;
         }
         // remove a family from the list
         aFamilies.erase( aFamsIter++ );
@@ -287,9 +324,7 @@ namespace
   {
     if ( anElemFamMap.IsBound( (Standard_Address) anElement ))
       return anElemFamMap( (Standard_Address) anElement );
-//     TElemFamilyMap::iterator elem_famNum = anElemFamMap.find( anElement );
-//     if ( elem_famNum != anElemFamMap.end() )
-//       return elem_famNum->second;
+
     return aDefaultFamilyId;
   }
 
@@ -311,12 +346,8 @@ namespace
 Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
 {
   Status aResult = DRS_OK;
-  if (myMesh->hasConstructionEdges() || myMesh->hasConstructionFaces()) {
-    INFOS("SMDS_MESH with hasConstructionEdges() or hasConstructionFaces() do not supports!!!");
-    return DRS_FAIL;
-  }
   try {
-    MESSAGE("Perform - myFile : "<<myFile);
+    //MESSAGE("Perform - myFile : "<<myFile);
 
     // Creating the MED mesh for corresponding SMDS structure
     //-------------------------------------------------------
@@ -330,13 +361,22 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
     }
 
     // Mesh dimension definition
+
+    TInt aMeshDimension = 0;
+    if ( myMesh->NbEdges() > 0 )
+      aMeshDimension = 1;
+    if ( myMesh->NbFaces() > 0 )
+      aMeshDimension = 2;
+    if ( myMesh->NbVolumes() > 0 )
+      aMeshDimension = 3;
+
     TInt aSpaceDimension = 3;
     TCoordHelperPtr aCoordHelperPtr;
     {
       bool anIsXDimension = false;
       bool anIsYDimension = false;
       bool anIsZDimension = false;
-      if ( myAutoDimension )
+      if ( myAutoDimension && aMeshDimension < 3 )
       {
         SMDS_NodeIteratorPtr aNodesIter = myMesh->nodesIterator();
         double aBounds[6];
@@ -350,20 +390,39 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
           const SMDS_MeshNode* aNode = aNodesIter->next();
           aBounds[0] = min(aBounds[0],aNode->X());
           aBounds[1] = max(aBounds[1],aNode->X());
-          
+
           aBounds[2] = min(aBounds[2],aNode->Y());
           aBounds[3] = max(aBounds[3],aNode->Y());
-          
+
           aBounds[4] = min(aBounds[4],aNode->Z());
           aBounds[5] = max(aBounds[5],aNode->Z());
         }
 
         double EPS = 1.0E-7;
+        TopoDS_Shape mainShape = myMesh->ShapeToMesh();
+        bool    hasShapeToMesh = ( myMesh->SubMeshIndices().size() > 1 );
+        if ( !mainShape.IsNull() && hasShapeToMesh )
+        {
+          // define EPS by max tolerance of the mainShape (IPAL53097)
+          TopExp_Explorer subShape;
+          for ( subShape.Init( mainShape, TopAbs_FACE ); subShape.More(); subShape.Next() ) {
+            EPS = Max( EPS, BRep_Tool::Tolerance( TopoDS::Face( subShape.Current() )));
+          }
+          for ( subShape.Init( mainShape, TopAbs_EDGE ); subShape.More(); subShape.Next() ) {
+            EPS = Max( EPS, BRep_Tool::Tolerance( TopoDS::Edge( subShape.Current() )));
+          }
+          for ( subShape.Init( mainShape, TopAbs_VERTEX ); subShape.More(); subShape.Next() ) {
+            EPS = Max( EPS, BRep_Tool::Tolerance( TopoDS::Vertex( subShape.Current() )));
+          }
+          EPS *= 2.;
+        }
         anIsXDimension = (aBounds[1] - aBounds[0]) + abs(aBounds[1]) + abs(aBounds[0]) > EPS;
         anIsYDimension = (aBounds[3] - aBounds[2]) + abs(aBounds[3]) + abs(aBounds[2]) > EPS;
         anIsZDimension = (aBounds[5] - aBounds[4]) + abs(aBounds[5]) + abs(aBounds[4]) > EPS;
-        aSpaceDimension = anIsXDimension + anIsYDimension + anIsZDimension;
-        if(!aSpaceDimension)
+        if ( myZTolerance > 0 && anIsZDimension )
+          anIsZDimension = (aBounds[5] > myZTolerance || aBounds[4] < -myZTolerance );
+        aSpaceDimension = Max( aMeshDimension, anIsXDimension + anIsYDimension + anIsZDimension );
+        if ( !aSpaceDimension )
           aSpaceDimension = 3;
         // PAL16857(SMESH not conform to the MED convention):
         if ( aSpaceDimension == 2 && anIsZDimension ) // 2D only if mesh is in XOY plane
@@ -379,8 +438,8 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
         }
       }
 
-      SMDS_NodeIteratorPtr aNodesIter = myMesh->nodesIterator(/*idInceasingOrder=*/true);
-      switch(aSpaceDimension){
+      SMDS_NodeIteratorPtr aNodesIter = myMesh->nodesIterator();
+      switch ( aSpaceDimension ) {
       case 3:
         aCoordHelperPtr.reset(new TCoordHelper(aNodesIter,aXYZGetCoord,aXYZName));
         break;
@@ -402,17 +461,10 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
         break;
       }
     }
-    TInt aMeshDimension = 0;
-    if ( myMesh->NbEdges() > 0 )
-      aMeshDimension = 1;
-    if ( myMesh->NbFaces() > 0 )
-      aMeshDimension = 2;
-    if ( myMesh->NbVolumes() > 0 )
-      aMeshDimension = 3;
-    
-    MED::PWrapper myMed = CrWrapper(myFile,myMedVersion);
+
+    MED::PWrapper myMed = CrWrapperW(myFile, myVersion);
     PMeshInfo aMeshInfo = myMed->CrMeshInfo(aMeshDimension,aSpaceDimension,aMeshName);
-    MESSAGE("Add - aMeshName : "<<aMeshName<<"; "<<aMeshInfo->GetName());
+    //MESSAGE("Add - aMeshName : "<<aMeshName<<"; "<<aMeshInfo->GetName());
     myMed->SetMeshInfo(aMeshInfo);
 
     // Storing SMDS groups and sub-meshes as med families
@@ -429,14 +481,22 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
     int nbEdges      = myMesh->NbEdges();
     int nbFaces      = myMesh->NbFaces();
     int nbVolumes    = myMesh->NbVolumes();
-    if (myDoGroupOfNodes && nbNodes) myNodesDefaultFamilyId = REST_NODES_FAMILY;
-    if (myDoGroupOfEdges && nbEdges) myEdgesDefaultFamilyId = REST_EDGES_FAMILY;
-    if (myDoGroupOfFaces && nbFaces) myFacesDefaultFamilyId = REST_FACES_FAMILY;
-    if (myDoGroupOfVolumes && nbVolumes) myVolumesDefaultFamilyId = REST_VOLUMES_FAMILY;
-    if (myDoGroupOf0DElems && nb0DElements) my0DElementsDefaultFamilyId = REST_0DELEM_FAMILY;
-    if (myDoGroupOfBalls && nbBalls) myBallsDefaultFamilyId = REST_BALL_FAMILY;
-
-    MESSAGE("Perform - aFamilyInfo");
+    if (myDoGroupOfNodes)   myNodesDefaultFamilyId      = REST_NODES_FAMILY;
+    if (myDoGroupOfEdges)   myEdgesDefaultFamilyId      = REST_EDGES_FAMILY;
+    if (myDoGroupOfFaces)   myFacesDefaultFamilyId      = REST_FACES_FAMILY;
+    if (myDoGroupOfVolumes) myVolumesDefaultFamilyId    = REST_VOLUMES_FAMILY;
+    if (myDoGroupOf0DElems) my0DElementsDefaultFamilyId = REST_0DELEM_FAMILY;
+    if (myDoGroupOfBalls)   myBallsDefaultFamilyId      = REST_BALL_FAMILY;
+    if (myDoAllInGroups )
+    {
+      if (!myDoGroupOfEdges)   myEdgesDefaultFamilyId      = NIG_EDGES_FAMILY   ;
+      if (!myDoGroupOfFaces)   myFacesDefaultFamilyId      = NIG_FACES_FAMILY   ;
+      if (!myDoGroupOfVolumes) myVolumesDefaultFamilyId    = NIG_VOLS_FAMILY    ;
+      if (!myDoGroupOf0DElems) my0DElementsDefaultFamilyId = NIG_0DELEM_FAMILY  ;
+      if (!myDoGroupOfBalls)   myBallsDefaultFamilyId      = NIG_BALL_FAMILY    ;
+    }
+
+    //MESSAGE("Perform - aFamilyInfo");
     list<DriverMED_FamilyPtr> aFamilies;
     if (myAllSubMeshes) {
       aFamilies = DriverMED_Family::MakeFamilies
@@ -446,8 +506,10 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
          myDoGroupOfFaces   && nbFaces,
          myDoGroupOfVolumes && nbVolumes,
          myDoGroupOf0DElems && nb0DElements,
-         myDoGroupOfBalls   && nbBalls);
-    } else {
+         myDoGroupOfBalls   && nbBalls,
+         myDoAllInGroups);
+    }
+    else {
       aFamilies = DriverMED_Family::MakeFamilies
         (getIterator( mySubMeshes ), myGroups,
          myDoGroupOfNodes   && nbNodes,
@@ -455,7 +517,8 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
          myDoGroupOfFaces   && nbFaces,
          myDoGroupOfVolumes && nbVolumes,
          myDoGroupOf0DElems && nb0DElements,
-         myDoGroupOfBalls   && nbBalls);
+         myDoGroupOfBalls   && nbBalls,
+         myDoAllInGroups);
     }
     list<DriverMED_FamilyPtr>::iterator aFamsIter;
     for (aFamsIter = aFamilies.begin(); aFamsIter != aFamilies.end(); aFamsIter++)
@@ -480,7 +543,6 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
     PNodeInfo aNodeInfo = myMed->CrNodeInfo(aMeshInfo, aNbNodes,
                                             theMode, theSystem, theIsElemNum, theIsElemNames);
 
-    //cout << " fillElemFamilyMap( SMDSAbs_Node )" << endl;
     // find family numbers for nodes
     TElemFamilyMap anElemFamMap;
     fillElemFamilyMap( anElemFamMap, aFamilies, SMDSAbs_Node );
@@ -492,6 +554,10 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
       for(TInt iCoord = 0; iCoord < aSpaceDimension; iCoord++){
         aTCoordSlice[iCoord] = aCoordHelperPtr->GetCoord(iCoord);
       }
+      if ( aSpaceDimension == 3 &&
+           -myZTolerance < aTCoordSlice[2] && aTCoordSlice[2] < myZTolerance )
+        aTCoordSlice[2] = 0.;
+
       // node number
       int aNodeID = aCoordHelperPtr->GetID();
       aNodeInfo->SetElemNum( iNode, aNodeID );
@@ -511,8 +577,7 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
       aNodeInfo->SetCoordUnit( iCoord, aCoordHelperPtr->GetUnit(iCoord));
     }
 
-    //cout << " SetNodeInfo(aNodeInfo)" << endl;
-    MESSAGE("Perform - aNodeInfo->GetNbElem() = "<<aNbNodes);
+    //MESSAGE("Perform - aNodeInfo->GetNbElem() = "<<aNbNodes);
     myMed->SetNodeInfo(aNodeInfo);
     aNodeInfo.reset(); // free memory used for arrays
 
@@ -524,7 +589,7 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
     const SMDS_MeshInfo& nbElemInfo = myMesh->GetMeshInfo();
 
     // poly elements are not supported by med-2.1
-    bool polyTypesSupported = myMed->CrPolygoneInfo(aMeshInfo,eMAILLE,ePOLYGONE,0,0);
+    bool polyTypesSupported = ( myMed->CrPolygoneInfo(aMeshInfo,eMAILLE,ePOLYGONE,0,0).get() != 0 );
     TInt nbPolygonNodes = 0, nbPolyhedronNodes = 0, nbPolyhedronFaces = 0;
 
     // nodes on VERTEXes where 0D elements are absent
@@ -605,12 +670,21 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
     if ( polyTypesSupported ) {
       aTElemTypeDatas.push_back( TElemTypeData(anEntity,
                                                ePOLYGONE,
-                                               nbElemInfo.NbPolygons(),
+                                               nbElemInfo.NbPolygons( ORDER_LINEAR ),
                                                SMDSAbs_Face));
       // we need one more loop on poly elements to count nb of their nodes
       aTElemTypeDatas.push_back( TElemTypeData(anEntity,
                                                ePOLYGONE,
-                                               nbElemInfo.NbPolygons(),
+                                               nbElemInfo.NbPolygons( ORDER_LINEAR ),
+                                               SMDSAbs_Face));
+      aTElemTypeDatas.push_back( TElemTypeData(anEntity,
+                                               ePOLYGON2,
+                                               nbElemInfo.NbPolygons( ORDER_QUADRATIC ),
+                                               SMDSAbs_Face));
+      // we need one more loop on QUAD poly elements to count nb of their nodes
+      aTElemTypeDatas.push_back( TElemTypeData(anEntity,
+                                               ePOLYGON2,
+                                               nbElemInfo.NbPolygons( ORDER_QUADRATIC ),
                                                SMDSAbs_Face));
     }
 #ifdef _ELEMENTS_BY_DIM_
@@ -638,7 +712,11 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
                                              SMDSAbs_Volume));
     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
                                              ePENTA15,
-                                             nbElemInfo.NbPrisms( ORDER_QUADRATIC ),
+                                             nbElemInfo.NbQuadPrisms(),
+                                             SMDSAbs_Volume));
+    aTElemTypeDatas.push_back( TElemTypeData(anEntity,
+                                             ePENTA18,
+                                             nbElemInfo.NbBiQuadPrisms(),
                                              SMDSAbs_Volume));
     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
                                              eHEXA8,
@@ -681,34 +759,36 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
 
       int defaultFamilyId = 0;
       switch ( aElemTypeData->_smdsType ) {
-      case SMDSAbs_0DElement:
-        defaultFamilyId = my0DElementsDefaultFamilyId;
-        break;
-      case SMDSAbs_Ball:
-        defaultFamilyId = myBallsDefaultFamilyId;
-        break;
-      case SMDSAbs_Edge:
-        defaultFamilyId = myEdgesDefaultFamilyId;
-        break;
-      case SMDSAbs_Face:
-        defaultFamilyId = myFacesDefaultFamilyId;
-        break;
-      case SMDSAbs_Volume:
-        defaultFamilyId = myVolumesDefaultFamilyId;
-        break;
+      case SMDSAbs_0DElement: defaultFamilyId = my0DElementsDefaultFamilyId; break;
+      case SMDSAbs_Ball:      defaultFamilyId = myBallsDefaultFamilyId;      break;
+      case SMDSAbs_Edge:      defaultFamilyId = myEdgesDefaultFamilyId;      break;
+      case SMDSAbs_Face:      defaultFamilyId = myFacesDefaultFamilyId;      break;
+      case SMDSAbs_Volume:    defaultFamilyId = myVolumesDefaultFamilyId;    break;
       default:
         continue;
       }
 
+      // build map of family numbers for this type
+      if ( !isElemFamMapBuilt[ aElemTypeData->_smdsType ])
+      {
+        fillElemFamilyMap( anElemFamMap, aFamilies, aElemTypeData->_smdsType );
+        isElemFamMapBuilt[ aElemTypeData->_smdsType ] = true;
+      }
+
       // iterator on elements of a current type
       SMDS_ElemIteratorPtr elemIterator;
       int iElem = 0;
 
       // Treat POLYGONs
       // ---------------
-      if ( aElemTypeData->_geomType == ePOLYGONE )
+      if ( aElemTypeData->_geomType == ePOLYGONE ||
+           aElemTypeData->_geomType == ePOLYGON2 )
       {
-        elemIterator = myMesh->elementGeomIterator( SMDSGeom_POLYGON );
+        if ( aElemTypeData->_geomType == ePOLYGONE )
+          elemIterator = myMesh->elementEntityIterator( SMDSEntity_Polygon );
+        else
+          elemIterator = myMesh->elementEntityIterator( SMDSEntity_Quad_Polygon );
+
         if ( nbPolygonNodes == 0 ) {
           // Count nb of nodes
           while ( elemIterator->more() ) {
@@ -758,24 +838,23 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
               break;
           }
           myMed->SetPolygoneInfo(aPolygoneInfo);
-        }
 
-      } 
+          nbPolygonNodes = 0; // to treat next polygon type
+        }
+      }
 
       // Treat POLYEDREs
       // ----------------
-      else if (aElemTypeData->_geomType == ePOLYEDRE )
+      else if ( aElemTypeData->_geomType == ePOLYEDRE )
       {
         elemIterator = myMesh->elementGeomIterator( SMDSGeom_POLYHEDRA );
-        
+
         if ( nbPolyhedronNodes == 0 ) {
           // Count nb of nodes
           while ( elemIterator->more() ) {
-            const SMDS_MeshElement* anElem = elemIterator->next();
-            const SMDS_VtkVolume *aPolyedre = dynamic_cast<const SMDS_VtkVolume*>(anElem);
-            if ( !aPolyedre ) continue;
-            nbPolyhedronNodes += aPolyedre->NbNodes();
-            nbPolyhedronFaces += aPolyedre->NbFaces();
+            const SMDS_MeshElement*  anElem = elemIterator->next();
+            nbPolyhedronNodes += anElem->NbNodes();
+            nbPolyhedronFaces += anElem->NbFaces();
             if ( ++iElem == aElemTypeData->_nbElems )
               break;
           }
@@ -801,7 +880,7 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
           while ( elemIterator->more() )
           {
             const SMDS_MeshElement* anElem = elemIterator->next();
-            const SMDS_VtkVolume *aPolyedre = dynamic_cast<const SMDS_VtkVolume*>(anElem);
+            const SMDS_MeshVolume *aPolyedre = myMesh->DownCast< SMDS_MeshVolume >( anElem );
             if ( !aPolyedre ) continue;
             // index
             TInt aNbFaces = aPolyedre->NbFaces();
@@ -842,15 +921,7 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
       else if (aElemTypeData->_geomType == eBALL )
       {
         // allocate data arrays
-        PBallInfo aBallInfo = myMed->CrBallInfo( aMeshInfo,
-                                                 aElemTypeData->_nbElems );
-
-        // build map of family numbers for this type
-        if ( !isElemFamMapBuilt[ aElemTypeData->_smdsType ])
-        {
-          fillElemFamilyMap( anElemFamMap, aFamilies, aElemTypeData->_smdsType );
-          isElemFamMapBuilt[ aElemTypeData->_smdsType ] = true;
-        }
+        PBallInfo aBallInfo = myMed->CrBallInfo( aMeshInfo, aElemTypeData->_nbElems );
 
         elemIterator = myMesh->elementsIterator( SMDSAbs_Ball );
         while ( elemIterator->more() )
@@ -883,7 +954,6 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
       {
         // Treat standard types
         // ---------------------
-
         // allocate data arrays
         PCellInfo aCellInfo = myMed->CrCellInfo( aMeshInfo,
                                                  aElemTypeData->_entity,
@@ -892,13 +962,6 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
                                                  theConnMode,
                                                  theIsElemNum,
                                                  theIsElemNames);
-        // build map of family numbers for this type
-        if ( !isElemFamMapBuilt[ aElemTypeData->_smdsType ])
-        {
-          //cout << " fillElemFamilyMap()" << endl;
-          fillElemFamilyMap( anElemFamMap, aFamilies, aElemTypeData->_smdsType );
-          isElemFamMapBuilt[ aElemTypeData->_smdsType ] = true;
-        }
 
         TInt aNbNodes = MED::GetNbNodes(aElemTypeData->_geomType);
         elemIterator = myMesh->elementsIterator( aElemTypeData->_smdsType );
@@ -933,10 +996,7 @@ Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
         // store data in a file
         myMed->SetCellInfo(aCellInfo);
       }
-
     } // loop on geom types
-
-
   }
   catch(const std::exception& exc) {
     INFOS("The following exception was caught:\n\t"<<exc.what());