X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;f=src%2FMEDLoader%2FMEDFileMesh.cxx;h=66355a7dc44770bba2ca97bd4d0866471f271d82;hb=68a0c40d78df28a0ecf45af75c138c6789f25bf1;hp=f9074f9709045520a4c6016ecb4919b785ec95eb;hpb=c7bf7fbf92e3677edc83d51fcc5e5e8aabb53b68;p=tools%2Fmedcoupling.git

diff --git a/src/MEDLoader/MEDFileMesh.cxx b/src/MEDLoader/MEDFileMesh.cxx
index f9074f970..66355a7dc 100644
--- a/src/MEDLoader/MEDFileMesh.cxx
+++ b/src/MEDLoader/MEDFileMesh.cxx
@@ -1,4 +1,4 @@
-// Copyright (C) 2007-2014  CEA/DEN, EDF R&D
+// Copyright (C) 2007-2015  CEA/DEN, EDF R&D
 //
 // This library is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Lesser General Public
@@ -660,6 +660,81 @@ std::vector<std::string> MEDFileMesh::removeOrphanFamilies()
   return ret;
 }
 
+/*!
+ * This method operates only on maps in \a this. The arrays are not considered here. So this method will remove a family (except "FAMILLE_ZERO" family) if no group lies on it whatever
+ * this family is orphan or not.
+ *
+ * \warning this method is different from removeOrphanFamilies that scans family field array to find orphan families.
+ */
+void MEDFileMesh::removeFamiliesReferedByNoGroups()
+{
+  std::map<std::string,int> fams;
+  std::set<std::string> sfams;
+  for(std::map<std::string,int>::const_iterator it=_families.begin();it!=_families.end();it++)
+    sfams.insert((*it).first);
+  for(std::map<std::string, std::vector<std::string> >::const_iterator it0=_groups.begin();it0!=_groups.end();it0++)
+    for(std::vector<std::string>::const_iterator it1=(*it0).second.begin();it1!=(*it0).second.end();it1++)
+      sfams.erase(*it1);
+  for(std::set<std::string>::const_iterator it=sfams.begin();it!=sfams.end();it++)
+    if(*it!=DFT_FAM_NAME)
+      _families.erase(*it);
+}
+
+/*!
+ * This method has no impact on groups. This method only works on families. This method firstly removes families not refered by any groups in \a this, then all unused entities
+ * are put as belonging to family 0 ("FAMILLE_ZERO"). Finally, all orphanFamilies are killed.
+ * This method raises an exception if "FAMILLE_ZERO" is already belonging to a group.
+ *
+ * \sa MEDFileMesh::removeOrphanFamilies
+ */
+void MEDFileMesh::rearrangeFamilies()
+{
+  checkOrphanFamilyZero();
+  removeFamiliesReferedByNoGroups();
+  //
+  std::vector<int> levels(getNonEmptyLevelsExt());
+  std::set<int> idsRefed;
+  for(std::map<std::string,int>::const_iterator it=_families.begin();it!=_families.end();it++)
+    idsRefed.insert((*it).second);
+  for(std::vector<int>::const_iterator it=levels.begin();it!=levels.end();it++)
+    {
+      const DataArrayInt *fams(0);
+      try
+      {
+          fams=getFamilyFieldAtLevel(*it);
+      }
+      catch(INTERP_KERNEL::Exception& e) { }
+      if(!fams)
+        continue;
+      std::vector<bool> v(fams->getNumberOfTuples(),false);
+      for(std::set<int>::const_iterator pt=idsRefed.begin();pt!=idsRefed.end();pt++)
+        fams->switchOnTupleEqualTo(*pt,v);
+      MEDCouplingAutoRefCountObjectPtr<DataArrayInt> unfetchedIds(DataArrayInt::BuildListOfSwitchedOff(v));
+      if(!unfetchedIds->empty())
+        {
+          MEDCouplingAutoRefCountObjectPtr<DataArrayInt> newFams(fams->deepCpy());
+          newFams->setPartOfValuesSimple3(0,unfetchedIds->begin(),unfetchedIds->end(),0,1,1);
+          setFamilyFieldArr(*it,newFams);
+        }
+    }
+  removeOrphanFamilies();
+}
+
+/*!
+ * This method only checks that "FAMILLE_ZERO" is orphan (not belonging to a group).
+ */
+void MEDFileMesh::checkOrphanFamilyZero() const
+{
+  for(std::map<std::string, std::vector<std::string> >::const_iterator it=_groups.begin();it!=_groups.end();it++)
+    {
+      if(std::find((*it).second.begin(),(*it).second.end(),DFT_FAM_NAME)!=(*it).second.end())
+        {
+          std::ostringstream oss; oss << "MEDFileMesh::rearrangeFamilies : Groups \"" << (*it).first << "\" is lying on family \"" << DFT_FAM_NAME << "\" !";
+          throw INTERP_KERNEL::Exception(oss.str().c_str());
+        }
+    }
+}
+
 /*!
  * Renames a group in \a this mesh.
  *  \param [in] oldName - a current name of the group to rename.
@@ -2068,6 +2143,8 @@ MEDFileMesh *MEDFileUMesh::deepCpy() const
       if((const MEDFileUMeshSplitL1 *)(*it))
         ret->_ms[i]=(*it)->deepCpy(ret->_coords);
     }
+  if((const PartDefinition*)_part_coords)
+    ret->_part_coords=_part_coords->deepCpy();
   return ret.retn();
 }
 
@@ -2176,7 +2253,15 @@ bool MEDFileUMesh::isEqual(const MEDFileMesh *other, double eps, std::string& wh
             return false;
         }
     }
-  return true;
+  const PartDefinition *pd0(_part_coords),*pd1(otherC->_part_coords);
+  if(!pd0 && !pd1)
+    return true;
+  if((!pd0 && pd1) || (pd0 && !pd1))
+    {
+      what=std::string("node part def is defined only for one among this or other !");
+      return false;
+    }
+  return pd0->isEqual(pd1,what);
 }
 
 /*!
@@ -2782,6 +2867,12 @@ int MEDFileUMesh::getNumberOfNodes() const
   return coo->getNumberOfTuples();
 }
 
+int MEDFileUMesh::getNumberOfCellsAtLevel(int meshDimRelToMaxExt) const
+{
+  const MEDFileUMeshSplitL1 *l1=getMeshAtLevSafe(meshDimRelToMaxExt);
+  return l1->getNumberOfCells();
+}
+
 bool MEDFileUMesh::hasImplicitPart() const
 {
   return false;
@@ -3203,7 +3294,7 @@ const MEDFileUMeshSplitL1 *MEDFileUMesh::getMeshAtLevSafe(int meshDimRelToMaxExt
     throw INTERP_KERNEL::Exception("Dimension request is invalid (>1) !");
   int tracucedRk=-meshDimRelToMaxExt;
   if(tracucedRk>=(int)_ms.size())
-    throw INTERP_KERNEL::Exception("Invalid mesh dim relative to max given ! To low !");
+    throw INTERP_KERNEL::Exception("Invalid mesh dim relative to max given ! Too low !");
   if((const MEDFileUMeshSplitL1 *)_ms[tracucedRk]==0)
     throw INTERP_KERNEL::Exception("On specified lev (or entity) no cells exists !");
   return _ms[tracucedRk];
@@ -3217,7 +3308,7 @@ MEDFileUMeshSplitL1 *MEDFileUMesh::getMeshAtLevSafe(int meshDimRelToMaxExt)
     throw INTERP_KERNEL::Exception("Dimension request is invalid (>1) !");
   int tracucedRk=-meshDimRelToMaxExt;
   if(tracucedRk>=(int)_ms.size())
-    throw INTERP_KERNEL::Exception("Invalid mesh dim relative to max given ! To low !");
+    throw INTERP_KERNEL::Exception("Invalid mesh dim relative to max given ! Too low !");
   if((const MEDFileUMeshSplitL1 *)_ms[tracucedRk]==0)
     throw INTERP_KERNEL::Exception("On specified lev (or entity) no cells exists !");
   return _ms[tracucedRk];
@@ -3499,24 +3590,35 @@ struct MEDLoaderAccVisit1
  */
 DataArrayInt *MEDFileUMesh::zipCoords()
 {
-  const DataArrayDouble *coo=getCoords();
+  const DataArrayDouble *coo(getCoords());
   if(!coo)
     throw INTERP_KERNEL::Exception("MEDFileUMesh::zipCoords : no coordinates set in this !");
-  int nbOfNodes=coo->getNumberOfTuples();
+  int nbOfNodes(coo->getNumberOfTuples());
   std::vector<bool> nodeIdsInUse(nbOfNodes,false);
-  std::vector<int> neLevs=getNonEmptyLevels();
+  std::vector<int> neLevs(getNonEmptyLevels());
   for(std::vector<int>::const_iterator lev=neLevs.begin();lev!=neLevs.end();lev++)
     {
-      MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> m=getMeshAtLevel(*lev);
-      m->computeNodeIdsAlg(nodeIdsInUse);
+      const MEDFileUMeshSplitL1 *zeLev(getMeshAtLevSafe(*lev));
+      if(zeLev->isMeshStoredSplitByType())
+        {
+          std::vector<MEDCoupling1GTUMesh *> ms(zeLev->getDirectUndergroundSingleGeoTypeMeshes());
+          for(std::vector<MEDCoupling1GTUMesh *>::const_iterator it=ms.begin();it!=ms.end();it++)
+            if(*it)
+              (*it)->computeNodeIdsAlg(nodeIdsInUse);
+        }
+      else
+        {
+          MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> mesh(zeLev->getWholeMesh(false));
+          mesh->computeNodeIdsAlg(nodeIdsInUse);
+        }
     }
-  int nbrOfNodesInUse=(int)std::count(nodeIdsInUse.begin(),nodeIdsInUse.end(),true);
+  int nbrOfNodesInUse((int)std::count(nodeIdsInUse.begin(),nodeIdsInUse.end(),true));
   if(nbrOfNodesInUse==nbOfNodes)
-    return 0;
-  MEDCouplingAutoRefCountObjectPtr<DataArrayInt> ret=DataArrayInt::New(); ret->alloc(nbOfNodes,1);
+    return 0;//no need to update _part_coords
+  MEDCouplingAutoRefCountObjectPtr<DataArrayInt> ret(DataArrayInt::New()); ret->alloc(nbOfNodes,1);
   std::transform(nodeIdsInUse.begin(),nodeIdsInUse.end(),ret->getPointer(),MEDLoaderAccVisit1());
-  MEDCouplingAutoRefCountObjectPtr<DataArrayInt> ret2=ret->invertArrayO2N2N2OBis(nbrOfNodesInUse);
-  MEDCouplingAutoRefCountObjectPtr<DataArrayDouble> newCoords=coo->selectByTupleIdSafe(ret2->begin(),ret2->end());
+  MEDCouplingAutoRefCountObjectPtr<DataArrayInt> ret2(ret->invertArrayO2N2N2OBis(nbrOfNodesInUse));
+  MEDCouplingAutoRefCountObjectPtr<DataArrayDouble> newCoords(coo->selectByTupleIdSafe(ret2->begin(),ret2->end()));
   MEDCouplingAutoRefCountObjectPtr<DataArrayInt> newFamCoords;
   MEDCouplingAutoRefCountObjectPtr<DataArrayAsciiChar> newNameCoords;
   if((const DataArrayInt *)_fam_coords)
@@ -3530,15 +3632,443 @@ DataArrayInt *MEDFileUMesh::zipCoords()
   for(std::vector< MEDCouplingAutoRefCountObjectPtr<MEDFileUMeshSplitL1> >::iterator it=_ms.begin();it!=_ms.end();it++)
     {
       if((MEDFileUMeshSplitL1*)*it)
-        (*it)->renumberNodesInConn(ret->begin());
+        {
+          (*it)->renumberNodesInConn(ret->begin());
+          (*it)->setCoords(_coords);
+        }
+    }
+  // updates _part_coords
+  const PartDefinition *pc(_part_coords);
+  if(pc)
+    {
+      MEDCouplingAutoRefCountObjectPtr<PartDefinition> tmpPD(DataArrayPartDefinition::New(ret2));
+      _part_coords=tmpPD->composeWith(pc);
+    }
+  return ret.retn();
+}
+
+/*!
+ * This method performs an extrusion along a path defined by \a m1D.
+ * \a this is expected to be a mesh with max mesh dimension equal to 2.
+ * \a m1D is expected to be a mesh with space dimesion equal to 3 and mesh dimension equal to 1.
+ * Mesh dimensions of returned mesh is incremented by one compared to thoose in \a this.
+ * This method scans all levels in \a this
+ * and put them in the returned mesh. All groups in \a this are also put in the returned mesh.
+ *
+ * \param [in] m1D - the mesh defining the extrusion path.
+ * \param [in] policy - defines the policy of extrusion (see MEDCouplingUMesh::buildExtrudedMesh for more details)
+ * \return - a new reference on mesh (you have to deal with using decrRef). The returned mesh will have the same name than \a this.
+ *
+ * \sa MEDCouplingUMesh::buildExtrudedMesh
+ */
+MEDFileUMesh *MEDFileUMesh::buildExtrudedMesh(const MEDCouplingUMesh *m1D, int policy) const
+{
+  if(getMeshDimension()!=2)
+    throw INTERP_KERNEL::Exception("MEDFileUMesh::buildExtrudedMesh : this is expected to be with mesh dimension equal to 2 !");
+  MEDCouplingAutoRefCountObjectPtr<MEDFileUMesh> ret(MEDFileUMesh::New());
+  m1D->checkCoherency();
+  if(m1D->getMeshDimension()!=1)
+    throw INTERP_KERNEL::Exception("MEDFileUMesh::buildExtrudedMesh : input mesh must have a mesh dimension equal to one !");
+  int nbRep(m1D->getNumberOfCells());
+  std::vector<int> levs(getNonEmptyLevels());
+  std::vector<std::string> grps(getGroupsNames());
+  std::vector< MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> > zeList;
+  DataArrayDouble *coords(0);
+  std::size_t nbOfLevsOut(levs.size()+1);
+  std::vector< MEDCouplingAutoRefCountObjectPtr<DataArrayInt> > o2ns(nbOfLevsOut);
+  for(std::vector<int>::const_iterator lev=levs.begin();lev!=levs.end();lev++)
+    {
+      MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> item(getMeshAtLevel(*lev));
+      item=item->clone(false);
+      item->changeSpaceDimension(3+(*lev),0.);//no problem non const but change DataArrayDouble for coordinates do not alter data
+      MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> tmp(static_cast<MEDCouplingUMesh *>(m1D->deepCpy()));
+      tmp->changeSpaceDimension(3+(*lev),0.);
+      MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> elt(item->buildExtrudedMesh(tmp,policy));
+      zeList.push_back(elt);
+      if(*lev==0)
+        coords=elt->getCoords();
+    }
+  if(!coords)
+    throw INTERP_KERNEL::Exception("MEDFileUMesh::buildExtrudedMesh : internal error !");
+  for(std::vector< MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> >::iterator it=zeList.begin();it!=zeList.end();it++)
+    {
+      (*it)->setName(getName());
+      (*it)->setCoords(coords);
+    }
+  for(std::size_t ii=0;ii!=zeList.size();ii++)
+    {
+      int lev(levs[ii]);
+      MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> elt(zeList[ii]);
+      if(lev<=-1)
+        {
+          MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> elt1(getMeshAtLevel(lev+1));
+          MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> elt2(elt1->clone(false));
+          MEDCouplingAutoRefCountObjectPtr<DataArrayInt> tmp(elt2->getNodalConnectivity()->deepCpy());
+          elt2->setConnectivity(tmp,elt2->getNodalConnectivityIndex());
+          elt2->shiftNodeNumbersInConn(nbRep*elt1->getNumberOfNodes());
+          elt1->setCoords(elt->getCoords()); elt2->setCoords(elt->getCoords());
+          std::vector<const MEDCouplingUMesh *> elts(3);
+          elts[0]=elt; elts[1]=elt1; elts[2]=elt2;
+          elt=MEDCouplingUMesh::MergeUMeshesOnSameCoords(elts);
+          elt->setName(getName());
+        }
+      //
+      o2ns[ii]=elt->sortCellsInMEDFileFrmt();
+      ret->setMeshAtLevel(lev,elt);
+    }
+  MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> endLev(getMeshAtLevel(levs.back())),endLev2;
+  endLev=endLev->clone(false); endLev->setCoords(coords);
+  MEDCouplingAutoRefCountObjectPtr<DataArrayInt> tmp(endLev->getNodalConnectivity()->deepCpy());
+  endLev2=endLev->clone(false); endLev2->setConnectivity(tmp,endLev->getNodalConnectivityIndex());
+  endLev2->shiftNodeNumbersInConn(nbRep*getNumberOfNodes());
+  endLev=MEDCouplingUMesh::MergeUMeshesOnSameCoords(endLev,endLev2);
+  o2ns[levs.size()]=endLev->sortCellsInMEDFileFrmt();
+  endLev->setName(getName());
+  ret->setMeshAtLevel(levs.back()-1,endLev);
+  //
+  for(std::size_t ii=0;ii!=zeList.size();ii++)
+    {
+      int lev(levs[ii]);
+      std::vector< MEDCouplingAutoRefCountObjectPtr<DataArrayInt> > outGrps;
+      std::vector< const DataArrayInt * > outGrps2;
+      if(lev<=-1)
+        {
+          for(std::vector<std::string>::const_iterator grp=grps.begin();grp!=grps.end();grp++)
+            {
+              MEDCouplingAutoRefCountObjectPtr<DataArrayInt> grpArr(getGroupArr(lev+1,*grp));
+              if(!grpArr->empty())
+                {
+                  MEDCouplingAutoRefCountObjectPtr<DataArrayInt> grpArr1(grpArr->deepCpy()),grpArr2(grpArr->deepCpy());
+                  int offset0(zeList[ii]->getNumberOfCells());
+                  int offset1(offset0+getNumberOfCellsAtLevel(lev+1));
+                  grpArr1->applyLin(1,offset0); grpArr2->applyLin(1,offset1);
+                  std::ostringstream oss; oss << grpArr2->getName() << "_top";
+                  grpArr2->setName(oss.str());
+                  grpArr1->transformWithIndArr(o2ns[ii]->begin(),o2ns[ii]->end());
+                  grpArr2->transformWithIndArr(o2ns[ii]->begin(),o2ns[ii]->end());
+                  outGrps.push_back(grpArr1); outGrps.push_back(grpArr2);
+                  outGrps2.push_back(grpArr1); outGrps2.push_back(grpArr2);
+                }
+            }
+        }
+      //
+      for(std::vector<std::string>::const_iterator grp=grps.begin();grp!=grps.end();grp++)
+        {
+          MEDCouplingAutoRefCountObjectPtr<DataArrayInt> grpArr(getGroupArr(lev,*grp));
+          if(!grpArr->empty())
+            {
+              int nbCellsB4Extrusion(getNumberOfCellsAtLevel(lev));
+              std::vector< MEDCouplingAutoRefCountObjectPtr<DataArrayInt> > grpArrs(nbRep);
+              std::vector< const DataArrayInt *> grpArrs2(nbRep);
+              for(int iii=0;iii<nbRep;iii++)
+                {
+                  grpArrs[iii]=grpArr->deepCpy(); grpArrs[iii]->applyLin(1,iii*nbCellsB4Extrusion);
+                  grpArrs2[iii]=grpArrs[iii];
+                }
+              MEDCouplingAutoRefCountObjectPtr<DataArrayInt> grpArrExt(DataArrayInt::Aggregate(grpArrs2));
+              grpArrExt->transformWithIndArr(o2ns[ii]->begin(),o2ns[ii]->end());
+              std::ostringstream grpName; grpName << *grp << "_extruded";
+              grpArrExt->setName(grpName.str());
+              outGrps.push_back(grpArrExt);
+              outGrps2.push_back(grpArrExt);
+            }
+        }
+      ret->setGroupsAtLevel(lev,outGrps2);
+    }
+  std::vector< MEDCouplingAutoRefCountObjectPtr<DataArrayInt> > outGrps;
+  std::vector< const DataArrayInt * > outGrps2;
+  for(std::vector<std::string>::const_iterator grp=grps.begin();grp!=grps.end();grp++)
+    {
+      MEDCouplingAutoRefCountObjectPtr<DataArrayInt> grpArr1(getGroupArr(levs.back(),*grp));
+      if(grpArr1->empty())
+        continue;
+      MEDCouplingAutoRefCountObjectPtr<DataArrayInt> grpArr2(grpArr1->deepCpy());
+      std::ostringstream grpName; grpName << *grp << "_top";
+      grpArr2->setName(grpName.str());
+      grpArr2->applyLin(1,getNumberOfCellsAtLevel(levs.back()));
+      outGrps.push_back(grpArr1); outGrps.push_back(grpArr2);
+      outGrps2.push_back(grpArr1); outGrps2.push_back(grpArr2);
+    }
+  ret->setGroupsAtLevel(levs.back()-1,outGrps2);
+  return ret.retn();
+}
+
+/*!
+ * This method converts all linear cells in \a this into quadratic cells (following the \a conversionType policy).
+ * All the cells converted are put in the returned instance. This method applies all the groups and families in \a this to returned instance.
+ * Groups on nodes and families on nodes are copied directly to the returned instance without transformation.
+ *
+ * \param [in] conversionType - conversionType specifies the type of conversion expected. Only 0 (default) and 1 are supported presently. 0 those that creates the 'most' simple
+ *             corresponding quadratic cells. 1 is those creating the 'most' complex.
+ * \param [in] eps - detection threshold for coordinates.
+ * \return A new instance that is the result of the conversion. The caller has the ownership of this returned instance.
+ *
+ * \sa MEDCouplingUMesh::convertLinearCellsToQuadratic , quadraticToLinear
+ */
+MEDFileUMesh *MEDFileUMesh::linearToQuadratic(int conversionType, double eps) const
+{
+  MEDCouplingAutoRefCountObjectPtr<MEDFileUMesh> ret(MEDFileUMesh::New());
+  int initialNbNodes(getNumberOfNodes());
+  MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> m0Tmp(getMeshAtLevel(0));
+  MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> m0(dynamic_cast<MEDCouplingUMesh *>(m0Tmp->deepCpy()));
+  {
+    MEDCouplingAutoRefCountObjectPtr<DataArrayInt> notUsed(m0->convertLinearCellsToQuadratic(conversionType));
+  }
+  DataArrayDouble *zeCoords(m0->getCoords());
+  ret->setMeshAtLevel(0,m0);
+  std::vector<int> levs(getNonEmptyLevels());
+  const DataArrayInt *famField(getFamilyFieldAtLevel(0));
+  if(famField)
+    {
+      MEDCouplingAutoRefCountObjectPtr<DataArrayInt> famFieldCpy(famField->deepCpy());
+      ret->setFamilyFieldArr(0,famFieldCpy);
+    }
+  famField=getFamilyFieldAtLevel(1);
+  if(famField)
+    {
+      MEDCouplingAutoRefCountObjectPtr<DataArrayInt> fam(DataArrayInt::New()); fam->alloc(zeCoords->getNumberOfTuples(),1);
+      fam->fillWithZero();
+      fam->setPartOfValues1(famField,0,initialNbNodes,1,0,1,1);
+      ret->setFamilyFieldArr(1,fam);
+    }
+  ret->copyFamGrpMapsFrom(*this);
+  MEDCouplingAutoRefCountObjectPtr<DataArrayDouble> partZeCoords(zeCoords->selectByTupleId2(initialNbNodes,zeCoords->getNumberOfTuples(),1));
+  for(std::vector<int>::const_iterator lev=levs.begin();lev!=levs.end();lev++)
+    {
+      if(*lev==0)
+        continue;
+      MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> m1Tmp(getMeshAtLevel(*lev));
+      MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> m1(dynamic_cast<MEDCouplingUMesh *>(m1Tmp->deepCpy()));
+      {
+        MEDCouplingAutoRefCountObjectPtr<DataArrayInt> notUsed(m1->convertLinearCellsToQuadratic(conversionType));
+      }
+      MEDCouplingAutoRefCountObjectPtr<DataArrayDouble> m1Coords(m1->getCoords()->selectByTupleId2(initialNbNodes,m1->getNumberOfNodes(),1));
+      DataArrayInt *b(0);
+      bool a(partZeCoords->areIncludedInMe(m1Coords,eps,b));
+      MEDCouplingAutoRefCountObjectPtr<DataArrayInt> bSafe(b);
+      if(!a)
+        {
+          std::ostringstream oss; oss << "MEDFileUMesh::linearCellsToQuadratic : for level " << *lev << " problem to identify nodes generated !";
+          throw INTERP_KERNEL::Exception(oss.str().c_str());
+        }
+      b->applyLin(1,initialNbNodes);
+      MEDCouplingAutoRefCountObjectPtr<DataArrayInt> l0(DataArrayInt::New()); l0->alloc(initialNbNodes,1); l0->iota();
+      std::vector<const DataArrayInt *> v(2); v[0]=l0; v[1]=b;
+      MEDCouplingAutoRefCountObjectPtr<DataArrayInt> renum(DataArrayInt::Aggregate(v));
+      m1->renumberNodesInConn(renum->begin());
+      m1->setCoords(zeCoords);
+      ret->setMeshAtLevel(*lev,m1);
+      famField=getFamilyFieldAtLevel(*lev);
+      if(famField)
+        {
+          MEDCouplingAutoRefCountObjectPtr<DataArrayInt> famFieldCpy(famField->deepCpy());
+          ret->setFamilyFieldArr(*lev,famFieldCpy);
+        }
     }
   return ret.retn();
 }
 
+/*!
+ * This method converts all quadratic cells in \a this into linear cells.
+ * All the cells converted are put in the returned instance. This method applies all the groups and families in \a this to returned instance.
+ * Groups on nodes and families on nodes are copied directly to the returned instance without transformation.
+ *
+ * \param [in] eps - detection threshold for coordinates.
+ * \return A new instance that is the result of the conversion. The caller has the ownership of this returned instance.
+ *
+ * \sa MEDCouplingUMesh::convertLinearCellsToQuadratic , linearToQuadratic
+ */
+MEDFileUMesh *MEDFileUMesh::quadraticToLinear(double eps) const
+{
+  MEDCouplingAutoRefCountObjectPtr<MEDFileUMesh> ret(MEDFileUMesh::New());
+  MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> m0Tmp(getMeshAtLevel(0));
+  MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> m0(dynamic_cast<MEDCouplingUMesh *>(m0Tmp->deepCpy()));
+  m0->convertQuadraticCellsToLinear();
+  m0->zipCoords();
+  DataArrayDouble *zeCoords(m0->getCoords());
+  ret->setMeshAtLevel(0,m0);
+  std::vector<int> levs(getNonEmptyLevels());
+  const DataArrayInt *famField(getFamilyFieldAtLevel(0));
+  if(famField)
+    {
+      MEDCouplingAutoRefCountObjectPtr<DataArrayInt> famFieldCpy(famField->deepCpy());
+      ret->setFamilyFieldArr(0,famFieldCpy);
+    }
+  famField=getFamilyFieldAtLevel(1);
+  if(famField)
+    {
+      MEDCouplingAutoRefCountObjectPtr<DataArrayInt> fam(famField->selectByTupleId2(0,zeCoords->getNumberOfTuples(),1));
+      ret->setFamilyFieldArr(1,fam);
+    }
+  ret->copyFamGrpMapsFrom(*this);
+  for(std::vector<int>::const_iterator lev=levs.begin();lev!=levs.end();lev++)
+    {
+      if(*lev==0)
+        continue;
+      MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> m1Tmp(getMeshAtLevel(*lev));
+      MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> m1(dynamic_cast<MEDCouplingUMesh *>(m1Tmp->deepCpy()));
+      m1->convertQuadraticCellsToLinear();
+      m1->zipCoords();
+      DataArrayInt *b(0);
+      bool a(zeCoords->areIncludedInMe(m1->getCoords(),eps,b));
+      MEDCouplingAutoRefCountObjectPtr<DataArrayInt> bSafe(b);
+      if(!a)
+        {
+          std::ostringstream oss; oss << "MEDFileUMesh::quadraticToLinear : for level " << *lev << " problem to identify nodes generated !";
+          throw INTERP_KERNEL::Exception(oss.str().c_str());
+        }
+      m1->renumberNodesInConn(b->begin());
+      m1->setCoords(zeCoords);
+      ret->setMeshAtLevel(*lev,m1);
+      famField=getFamilyFieldAtLevel(*lev);
+      if(famField)
+        {
+          MEDCouplingAutoRefCountObjectPtr<DataArrayInt> famFieldCpy(famField->deepCpy());
+          ret->setFamilyFieldArr(*lev,famFieldCpy);
+        }
+    }
+  return ret.retn();
+}
+
+void MEDFileUMesh::serialize(std::vector<double>& tinyDouble, std::vector<int>& tinyInt, std::vector<std::string>& tinyStr, std::vector< MEDCouplingAutoRefCountObjectPtr<DataArrayInt> >& bigArraysI, MEDCouplingAutoRefCountObjectPtr<DataArrayDouble>& bigArrayD)
+{
+  clearNonDiscrAttributes();
+  forceComputationOfParts();
+  tinyDouble.clear(); tinyInt.clear(); tinyStr.clear(); bigArraysI.clear(); bigArrayD=0;
+  std::vector<int> layer0;
+  layer0.push_back(_order); //0 i
+  layer0.push_back(_iteration);//1 i
+  layer0.push_back(getSpaceDimension());//2 i
+  tinyDouble.push_back(_time);//0 d
+  tinyStr.push_back(_name);//0 s
+  tinyStr.push_back(_desc_name);//1 s
+  for(int i=0;i<getSpaceDimension();i++)
+    tinyStr.push_back(_coords->getInfoOnComponent(i));
+  layer0.push_back((int)_families.size());//3 i <- key info aa layer#0
+  for(std::map<std::string,int>::const_iterator it=_families.begin();it!=_families.end();it++)
+    {
+      tinyStr.push_back((*it).first);
+      layer0.push_back((*it).second);
+    }
+  layer0.push_back((int)_groups.size());//3+aa i <- key info bb layer#0
+  for(std::map<std::string, std::vector<std::string> >::const_iterator it0=_groups.begin();it0!=_groups.end();it0++)
+    {
+      layer0.push_back((int)(*it0).second.size());
+      tinyStr.push_back((*it0).first);
+      for(std::vector<std::string>::const_iterator it1=((*it0).second).begin();it1!=((*it0).second).end();it1++)
+        tinyStr.push_back(*it1);
+    }
+  // sizeof(layer0)==3+aa+1+bb layer#0
+  bigArrayD=_coords;// 0 bd
+  bigArraysI.push_back(_fam_coords);// 0 bi
+  bigArraysI.push_back(_num_coords);// 1 bi
+  const PartDefinition *pd(_part_coords);
+  if(!pd)
+    layer0.push_back(-1);
+  else
+    {
+      std::vector<int> tmp0;
+      pd->serialize(tmp0,bigArraysI);
+      tinyInt.push_back(tmp0.size());
+      tinyInt.insert(tinyInt.end(),tmp0.begin(),tmp0.end());
+    }
+  //
+  std::vector<int> layer1;
+  std::vector<int> levs(getNonEmptyLevels());
+  layer1.push_back((int)levs.size());// 0 i <- key
+  layer1.insert(layer1.end(),levs.begin(),levs.end());
+  for(std::vector<int>::const_iterator it=levs.begin();it!=levs.end();it++)
+    {
+      const MEDFileUMeshSplitL1 *lev(getMeshAtLevSafe(*it));
+      lev->serialize(layer1,bigArraysI);
+    }
+  // put layers all together.
+  tinyInt.push_back(layer0.size());
+  tinyInt.insert(tinyInt.end(),layer0.begin(),layer0.end());
+  tinyInt.push_back(layer1.size());
+  tinyInt.insert(tinyInt.end(),layer1.begin(),layer1.end());
+}
+
+void MEDFileUMesh::unserialize(std::vector<double>& tinyDouble, std::vector<int>& tinyInt, std::vector<std::string>& tinyStr,
+                               std::vector< MEDCouplingAutoRefCountObjectPtr<DataArrayInt> >& bigArraysI, MEDCouplingAutoRefCountObjectPtr<DataArrayDouble>& bigArrayD)
+{
+  int sz0(tinyInt[0]);
+  std::vector<int> layer0(tinyInt.begin()+1,tinyInt.begin()+1+sz0);
+  int sz1(tinyInt[sz0+1]);
+  std::vector<int> layer1(tinyInt.begin()+2+sz0,tinyInt.begin()+2+sz0+sz1);
+  //
+  std::reverse(layer0.begin(),layer0.end());
+  std::reverse(layer1.begin(),layer1.end());
+  std::reverse(tinyDouble.begin(),tinyDouble.end());
+  std::reverse(tinyStr.begin(),tinyStr.end());
+  std::reverse(bigArraysI.begin(),bigArraysI.end());
+  //
+  _order=layer0.back(); layer0.pop_back();
+  _iteration=layer0.back(); layer0.pop_back();
+  int spaceDim(layer0.back()); layer0.pop_back();
+  _time=tinyDouble.back(); tinyDouble.pop_back();
+  _name=tinyStr.back(); tinyStr.pop_back();
+  _desc_name=tinyStr.back(); tinyStr.pop_back();
+  _coords=bigArrayD; _coords->rearrange(spaceDim);
+  for(int i=0;i<spaceDim;i++)
+    {
+      _coords->setInfoOnComponent(i,tinyStr.back());
+      tinyStr.pop_back();
+    }
+  int nbOfFams(layer0.back()); layer0.pop_back();
+  _families.clear();
+  for(int i=0;i<nbOfFams;i++)
+    {
+      _families[tinyStr.back()]=layer0.back();
+      tinyStr.pop_back(); layer0.pop_back();
+    }
+  int nbGroups(layer0.back()); layer0.pop_back();
+  _groups.clear();
+  for(int i=0;i<nbGroups;i++)
+    {
+      std::string grpName(tinyStr.back()); tinyStr.pop_back();
+      int nbOfFamsOnGrp(layer0.back()); layer0.pop_back();
+      std::vector<std::string> fams(nbOfFamsOnGrp);
+      for(int j=0;j<nbOfFamsOnGrp;j++)
+        {
+          fams[j]=tinyStr.back(); tinyStr.pop_back();
+        }
+      _groups[grpName]=fams;
+    }
+  _fam_coords=bigArraysI.back(); bigArraysI.pop_back();
+  _num_coords=bigArraysI.back(); bigArraysI.pop_back();
+  _part_coords=0;
+  int isPd(layer0.back()); layer0.pop_back();
+  if(isPd!=-1)
+    {
+      std::vector<int> tmp0(layer0.begin(),layer0.begin()+isPd);
+      layer0.erase(layer0.begin(),layer0.begin()+isPd);
+      _part_coords=PartDefinition::Unserialize(tmp0,bigArraysI);
+    }
+  if(!layer0.empty())
+    throw INTERP_KERNEL::Exception("MEDFileUMesh::unserialize : something wrong during unserialization #1 !");
+  //
+  int nbLevs(layer1.back()); layer1.pop_back();
+  std::vector<int> levs(layer1.rbegin(),layer1.rbegin()+nbLevs); layer1.erase(layer1.end()-nbLevs,layer1.end());
+  _ms.clear();
+  int maxLev(-(*std::min_element(levs.begin(),levs.end())));
+  _ms.resize(maxLev+1);
+  for(int i=0;i<nbLevs;i++)
+    {
+      int lev(levs[i]);
+      int pos(-lev);
+      _ms[pos]=MEDFileUMeshSplitL1::Unserialize(_name,_coords,layer1,bigArraysI);
+    }
+}
+
 /*!
  * Adds a group of nodes to \a this mesh.
  *  \param [in] ids - a DataArrayInt providing ids and a name of the group to add.
  *          The ids should be sorted and different each other (MED file norm).
+ *
+ *  \warning this method can alter default "FAMILLE_ZERO" family.
+ *  For users sensitive to this a call to MEDFileMesh::rearrangeFamilies will be necessary after addGroup session.
+ *
  *  \throw If the node coordinates array is not set.
  *  \throw If \a ids == \c NULL.
  *  \throw If \a ids->getName() == "".
@@ -3559,8 +4089,13 @@ void MEDFileUMesh::addNodeGroup(const DataArrayInt *ids)
 
 /*!
  * Adds a group of nodes/cells/faces/edges to \a this mesh.
+ *
  *  \param [in] ids - a DataArrayInt providing ids and a name of the group to add.
  *          The ids should be sorted and different each other (MED file norm).
+ *
+ * \warning this method can alter default "FAMILLE_ZERO" family.
+ * For users sensitive to this a call to MEDFileMesh::rearrangeFamilies will be necessary after addGroup session.
+ *
  *  \throw If the node coordinates array is not set.
  *  \throw If \a ids == \c NULL.
  *  \throw If \a ids->getName() == "".
@@ -3933,7 +4468,7 @@ void MEDFileUMesh::setFamilyFieldArr(int meshDimRelToMaxExt, DataArrayInt *famAr
     throw INTERP_KERNEL::Exception("MEDFileUMesh::setFamilyFieldArr : Dimension request is invalid (>1) !");
   int traducedRk=-meshDimRelToMaxExt;
   if(traducedRk>=(int)_ms.size())
-    throw INTERP_KERNEL::Exception("Invalid mesh dim relative to max given ! To low !");
+    throw INTERP_KERNEL::Exception("Invalid mesh dim relative to max given ! Too low !");
   if((MEDFileUMeshSplitL1 *)_ms[traducedRk]==0)
     throw INTERP_KERNEL::Exception("On specified lev (or entity) no cells exists !");
   return _ms[traducedRk]->setFamilyArr(famArr);
@@ -3969,7 +4504,7 @@ void MEDFileUMesh::setRenumFieldArr(int meshDimRelToMaxExt, DataArrayInt *renumA
     throw INTERP_KERNEL::Exception("MEDFileUMesh::setRenumArr : Dimension request is invalid (>1) !");
   int traducedRk=-meshDimRelToMaxExt;
   if(traducedRk>=(int)_ms.size())
-    throw INTERP_KERNEL::Exception("Invalid mesh dim relative to max given ! To low !");
+    throw INTERP_KERNEL::Exception("Invalid mesh dim relative to max given ! Too low !");
   if((MEDFileUMeshSplitL1 *)_ms[traducedRk]==0)
     throw INTERP_KERNEL::Exception("On specified lev (or entity) no cells exists !");
   return _ms[traducedRk]->setRenumArr(renumArr);
@@ -4003,7 +4538,7 @@ void MEDFileUMesh::setNameFieldAtLevel(int meshDimRelToMaxExt, DataArrayAsciiCha
     throw INTERP_KERNEL::Exception("MEDFileUMesh::setNameFieldAtLevel : Dimension request is invalid (>1) !");
   int traducedRk=-meshDimRelToMaxExt;
   if(traducedRk>=(int)_ms.size())
-    throw INTERP_KERNEL::Exception("Invalid mesh dim relative to max given ! To low !");
+    throw INTERP_KERNEL::Exception("Invalid mesh dim relative to max given ! Too low !");
   if((MEDFileUMeshSplitL1 *)_ms[traducedRk]==0)
     throw INTERP_KERNEL::Exception("On specified lev (or entity) no cells exists !");
   return _ms[traducedRk]->setNameArr(nameArr);