src/DriverMED/DriverMED_W_SMESHDS_Mesh.cxx

   1 // Copyright (C) 2007-2021  CEA/DEN, EDF R&D, OPEN CASCADE
   2 //
   3 // Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
   4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
   5 //
   6 // This library is free software; you can redistribute it and/or
   7 // modify it under the terms of the GNU Lesser General Public
   8 // License as published by the Free Software Foundation; either
   9 // version 2.1 of the License, or (at your option) any later version.
  10 //
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 // Lesser General Public License for more details.
  15 //
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  17 // License along with this library; if not, write to the Free Software
  18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19 //
  20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  21 //
  22
  23 //  SMESH DriverMED : driver to read and write 'med' files
  24 //  File   : DriverMED_W_SMESHDS_Mesh.cxx
  25 //  Module : SMESH
  26 //
  27
  28 #include "DriverMED_W_SMESHDS_Mesh.h"
  29
  30 #include "DriverMED_Family.h"
  31 #include "MED_Factory.hxx"
  32 #include "MED_Utilities.hxx"
  33 #include "MEDCoupling_Wrapper.hxx"
  34 #include "SMDS_IteratorOnIterators.hxx"
  35 #include "SMDS_MeshNode.hxx"
  36 #include "SMDS_SetIterator.hxx"
  37 #include "SMESHDS_Mesh.hxx"
  38 #include "MED_Common.hxx"
  39
  40 #include <med.h>
  41
  42 #include <BRep_Tool.hxx>
  43 #include <TopExp_Explorer.hxx>
  44 #include <TopoDS.hxx>
  45
  46 #include <utilities.h>
  47
  48
  49 #define _EDF_NODE_IDS_
  50 //#define _ELEMENTS_BY_DIM_
  51
  52 using namespace std;
  53 using namespace MED;
  54
  55
  56 DriverMED_W_SMESHDS_Mesh::DriverMED_W_SMESHDS_Mesh():
  57   myAllSubMeshes (false),
  58   myDoGroupOfNodes (false),
  59   myDoGroupOfEdges (false),
  60   myDoGroupOfFaces (false),
  61   myDoGroupOfVolumes (false),
  62   myDoGroupOf0DElems(false),
  63   myDoGroupOfBalls(false),
  64   myAutoDimension(false),
  65   myAddODOnVertices(false),
  66   myDoAllInGroups(false),
  67   myVersion(-1),
  68   myZTolerance(-1.)
  69 {}
  70
  71 void DriverMED_W_SMESHDS_Mesh::SetFile(const std::string& theFileName, int theVersion)
  72 {
  73   myVersion = theVersion;
  74   Driver_SMESHDS_Mesh::SetFile(theFileName);
  75 }
  76
  77 /*!
  78  * MED version is either the latest available, or with an inferior minor,
  79  * to ensure backward compatibility on writing med files.
  80  */
  81 string DriverMED_W_SMESHDS_Mesh::GetVersionString(int theMinor, int theNbDigits)
  82 {
  83   TInt majeur, mineur, release;
  84   majeur=MED_MAJOR_NUM;
  85   mineur=MED_MINOR_NUM;
  86   release=MED_RELEASE_NUM;
  87   TInt imposedMineur = mineur;
  88
  89   if (theMinor < 0)
  90     imposedMineur = mineur;
  91   else if (theMinor > MED_MINOR_NUM)
  92     imposedMineur = mineur;
  93   else
  94     imposedMineur = theMinor;
  95
  96   ostringstream name;
  97   if ( theNbDigits > 0 )
  98     name << majeur;
  99   if ( theNbDigits > 1 )
 100     name << "." << imposedMineur;
 101   if ( theNbDigits > 2 )
 102     name << "." << release;
 103   return name.str();
 104 }
 105
 106 void DriverMED_W_SMESHDS_Mesh::AddGroup(SMESHDS_GroupBase* theGroup)
 107 {
 108   myGroups.push_back(theGroup);
 109 }
 110
 111 void DriverMED_W_SMESHDS_Mesh::AddAllSubMeshes()
 112 {
 113   myAllSubMeshes = true;
 114 }
 115
 116 void DriverMED_W_SMESHDS_Mesh::AddSubMesh(SMESHDS_SubMesh* theSubMesh, int /*theID*/)
 117 {
 118   mySubMeshes.push_back( theSubMesh );
 119 }
 120
 121 void DriverMED_W_SMESHDS_Mesh::AddGroupOfNodes()
 122 {
 123   myDoGroupOfNodes = true;
 124 }
 125
 126 void DriverMED_W_SMESHDS_Mesh::AddGroupOfEdges()
 127 {
 128   myDoGroupOfEdges = true;
 129 }
 130
 131 void DriverMED_W_SMESHDS_Mesh::AddGroupOfFaces()
 132 {
 133   myDoGroupOfFaces = true;
 134 }
 135
 136 void DriverMED_W_SMESHDS_Mesh::AddGroupOfVolumes()
 137 {
 138   myDoGroupOfVolumes = true;
 139 }
 140
 141 void DriverMED_W_SMESHDS_Mesh::AddGroupOf0DElems()
 142 {
 143   myDoGroupOf0DElems = true;
 144 }
 145
 146 void DriverMED_W_SMESHDS_Mesh::AddGroupOfBalls()
 147 {
 148   myDoGroupOfBalls = true;
 149 }
 150
 151 //================================================================================
 152 /*!
 153  * \brief Set up a flag to add all elements not belonging to any group to
 154  *        some auxiliary group. This is needed for SMESH -> SAUVE -> SMESH conversion,
 155  *        which since PAL0023285 reads only SAUVE elements belonging to any group,
 156  *        and hence can lose some elements. That auxiliary group is ignored while
 157  *        reading a MED file.
 158  */
 159 //================================================================================
 160
 161 void DriverMED_W_SMESHDS_Mesh::AddAllToGroup()
 162 {
 163   myDoAllInGroups = true;
 164 }
 165
 166
 167 namespace
 168 {
 169   typedef double (SMDS_MeshNode::* TGetCoord)() const;
 170   typedef const char* TName;
 171   typedef const char* TUnit;
 172
 173   // name length in a mesh must be equal to 16 :
 174   //         1234567890123456
 175   TName M = "m               ";
 176   TName X = "x               ";
 177   TName Y = "y               ";
 178   TName Z = "z               ";
 179
 180   TUnit aUnit[3] = {M,M,M};
 181
 182   // 3 dim
 183   TGetCoord aXYZGetCoord[3] = {
 184     &SMDS_MeshNode::X,
 185     &SMDS_MeshNode::Y,
 186     &SMDS_MeshNode::Z
 187   };
 188   TName aXYZName[3] = {X,Y,Z};
 189
 190   // 2 dim
 191   TGetCoord aXYGetCoord[2] = {
 192     &SMDS_MeshNode::X,
 193     &SMDS_MeshNode::Y
 194   };
 195   TName aXYName[2] = {X,Y};
 196
 197   TGetCoord aYZGetCoord[2] = {
 198     &SMDS_MeshNode::Y,
 199     &SMDS_MeshNode::Z
 200   };
 201   TName aYZName[2] = {Y,Z};
 202
 203   TGetCoord aXZGetCoord[2] = {
 204     &SMDS_MeshNode::X,
 205     &SMDS_MeshNode::Z
 206   };
 207   TName aXZName[2] = {X,Z};
 208
 209   // 1 dim
 210   TGetCoord aXGetCoord[1] = {
 211     &SMDS_MeshNode::X
 212   };
 213   TName aXName[1] = {X};
 214
 215   TGetCoord aYGetCoord[1] = {
 216     &SMDS_MeshNode::Y
 217   };
 218   TName aYName[1] = {Y};
 219
 220   TGetCoord aZGetCoord[1] = {
 221     &SMDS_MeshNode::Z
 222   };
 223   TName aZName[1] = {Z};
 224
 225
 226   class TCoordHelper{
 227     SMDS_NodeIteratorPtr myNodeIter;
 228     const SMDS_MeshNode* myCurrentNode;
 229     TGetCoord* myGetCoord;
 230     TName* myName;
 231     TUnit* myUnit;
 232   public:
 233     TCoordHelper(const SMDS_NodeIteratorPtr& theNodeIter,
 234                  TGetCoord* theGetCoord,
 235                  TName* theName,
 236                  TUnit* theUnit = aUnit):
 237       myNodeIter(theNodeIter),
 238       myGetCoord(theGetCoord),
 239       myName(theName),
 240       myUnit(theUnit)
 241     {}
 242     virtual ~TCoordHelper(){}
 243     bool Next(){
 244       return myNodeIter->more() &&
 245         (myCurrentNode = myNodeIter->next());
 246     }
 247     const SMDS_MeshNode* GetNode(){
 248       return myCurrentNode;
 249     }
 250     MED::TIDVector::value_type GetID(){
 251       return myCurrentNode->GetID();
 252     }
 253     MED::TFloatVector::value_type GetCoord(TInt theCoodId){
 254       return (myCurrentNode->*myGetCoord[theCoodId])();
 255     }
 256     MED::TStringVector::value_type GetName(TInt theDimId){
 257       return myName[theDimId];
 258     }
 259     MED::TStringVector::value_type GetUnit(TInt theDimId){
 260       return myUnit[theDimId];
 261     }
 262   };
 263   typedef boost::shared_ptr<TCoordHelper> TCoordHelperPtr;
 264
 265   //-------------------------------------------------------
 266   /*!
 267    * \brief Structure describing element type
 268    */
 269   //-------------------------------------------------------
 270   struct TElemTypeData
 271   {
 272     EEntiteMaillage     _entity;
 273     EGeometrieElement   _geomType;
 274     TInt                _nbElems;
 275     SMDSAbs_ElementType _smdsType;
 276
 277     TElemTypeData (EEntiteMaillage entity, EGeometrieElement geom, TInt nb, SMDSAbs_ElementType type)
 278       : _entity(entity), _geomType(geom), _nbElems( nb ), _smdsType( type ) {}
 279   };
 280
 281
 282   typedef NCollection_DataMap< Standard_Address, int > TElemFamilyMap;
 283
 284   //================================================================================
 285   /*!
 286    * \brief Fills element to famaly ID map for element type.
 287    * Removes all families of anElemType
 288    */
 289   //================================================================================
 290
 291   void fillElemFamilyMap( TElemFamilyMap &            anElemFamMap,
 292                           list<DriverMED_FamilyPtr> & aFamilies,
 293                           const SMDSAbs_ElementType   anElemType)
 294   {
 295     anElemFamMap.Clear();
 296     list<DriverMED_FamilyPtr>::iterator aFamsIter = aFamilies.begin();
 297     while ( aFamsIter != aFamilies.end() )
 298     {
 299       if ((*aFamsIter)->GetType() != anElemType) {
 300         aFamsIter++;
 301       }
 302       else {
 303         int aFamId = (*aFamsIter)->GetId();
 304         const ElementsSet&              anElems = (*aFamsIter)->GetElements();
 305         ElementsSet::const_iterator anElemsIter = anElems.begin();
 306         for (; anElemsIter != anElems.end(); anElemsIter++)
 307         {
 308           anElemFamMap.Bind( (Standard_Address)*anElemsIter, aFamId );
 309         }
 310         // remove a family from the list
 311         aFamilies.erase( aFamsIter++ );
 312       }
 313     }
 314   }
 315
 316   //================================================================================
 317   /*!
 318    * \brief For an element, return family ID found in the map or a default one
 319    */
 320   //================================================================================
 321
 322   int getFamilyId( const TElemFamilyMap &  anElemFamMap,
 323                    const SMDS_MeshElement* anElement,
 324                    const int               aDefaultFamilyId)
 325   {
 326     if ( anElemFamMap.IsBound( (Standard_Address) anElement ))
 327       return anElemFamMap( (Standard_Address) anElement );
 328
 329     return aDefaultFamilyId;
 330   }
 331
 332   //================================================================================
 333   /*!
 334    * \brief Returns iterator on sub-meshes
 335    */
 336   //================================================================================
 337
 338   SMESHDS_SubMeshIteratorPtr getIterator( std::vector<SMESHDS_SubMesh*>& mySubMeshes )
 339   {
 340     return SMESHDS_SubMeshIteratorPtr
 341       ( new SMDS_SetIterator
 342         < const SMESHDS_SubMesh*, std::vector< SMESHDS_SubMesh* >::iterator >( mySubMeshes.begin(),
 343                                                                                mySubMeshes.end() ));
 344   }
 345 }
 346
 347 Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::Perform()
 348 {
 349   MED::PWrapper myMed = CrWrapperW(myFile, myVersion);
 350   return this->PerformInternal<MED::PWrapper>(myMed);
 351 }
 352
 353 Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::PerformMedcoupling()
 354 {
 355   MED::MCPWrapper myMed(new MED::MCTWrapper);
 356   return this->PerformInternal<MED::MCPWrapper>(myMed);
 357 }
 358
 359 //================================================================================
 360 /*!
 361  * \brief Write my mesh
 362  */
 363 //================================================================================
 364
 365 template<class LowLevelWriter>
 366 Driver_Mesh::Status DriverMED_W_SMESHDS_Mesh::PerformInternal(LowLevelWriter myMed)
 367 {
 368   Status aResult = DRS_OK;
 369   try {
 370     //MESSAGE("Perform - myFile : "<<myFile);
 371
 372     if ( Driver_Mesh::IsMeshTooLarge< TInt >( myMesh, /*checkIDs =*/ true ))
 373       return DRS_TOO_LARGE_MESH;
 374
 375     // Creating the MED mesh for corresponding SMDS structure
 376     //-------------------------------------------------------
 377     string aMeshName;
 378     if (myMeshId != -1) {
 379       ostringstream aMeshNameStr;
 380       aMeshNameStr<<myMeshId;
 381       aMeshName = aMeshNameStr.str();
 382     } else {
 383       aMeshName = myMeshName;
 384     }
 385
 386     // Mesh dimension definition
 387
 388     TInt aMeshDimension = 0;
 389     if ( myMesh->NbEdges() > 0 )
 390       aMeshDimension = 1;
 391     if ( myMesh->NbFaces() > 0 )
 392       aMeshDimension = 2;
 393     if ( myMesh->NbVolumes() > 0 )
 394       aMeshDimension = 3;
 395
 396     TInt aSpaceDimension = 3;
 397     TCoordHelperPtr aCoordHelperPtr;
 398     {
 399       bool anIsXDimension = false;
 400       bool anIsYDimension = false;
 401       bool anIsZDimension = false;
 402       if ( myAutoDimension && aMeshDimension < 3 )
 403       {
 404         SMDS_NodeIteratorPtr aNodesIter = myMesh->nodesIterator();
 405         double aBounds[6] = {0.,0.,0.,0.,0.,0.};
 406         if(aNodesIter->more()){
 407           const SMDS_MeshNode* aNode = aNodesIter->next();
 408           aBounds[0] = aBounds[1] = aNode->X();
 409           aBounds[2] = aBounds[3] = aNode->Y();
 410           aBounds[4] = aBounds[5] = aNode->Z();
 411         }
 412         while(aNodesIter->more()){
 413           const SMDS_MeshNode* aNode = aNodesIter->next();
 414           aBounds[0] = min(aBounds[0],aNode->X());
 415           aBounds[1] = max(aBounds[1],aNode->X());
 416
 417           aBounds[2] = min(aBounds[2],aNode->Y());
 418           aBounds[3] = max(aBounds[3],aNode->Y());
 419
 420           aBounds[4] = min(aBounds[4],aNode->Z());
 421           aBounds[5] = max(aBounds[5],aNode->Z());
 422         }
 423
 424         double EPS = 1.0E-7;
 425         TopoDS_Shape mainShape = myMesh->ShapeToMesh();
 426         bool    hasShapeToMesh = ( myMesh->SubMeshIndices().size() > 1 );
 427         if ( !mainShape.IsNull() && hasShapeToMesh )
 428         {
 429           // define EPS by max tolerance of the mainShape (IPAL53097)
 430           TopExp_Explorer subShape;
 431           for ( subShape.Init( mainShape, TopAbs_FACE ); subShape.More(); subShape.Next() ) {
 432             EPS = Max( EPS, BRep_Tool::Tolerance( TopoDS::Face( subShape.Current() )));
 433           }
 434           for ( subShape.Init( mainShape, TopAbs_EDGE ); subShape.More(); subShape.Next() ) {
 435             EPS = Max( EPS, BRep_Tool::Tolerance( TopoDS::Edge( subShape.Current() )));
 436           }
 437           for ( subShape.Init( mainShape, TopAbs_VERTEX ); subShape.More(); subShape.Next() ) {
 438             EPS = Max( EPS, BRep_Tool::Tolerance( TopoDS::Vertex( subShape.Current() )));
 439           }
 440           EPS *= 2.;
 441         }
 442         anIsXDimension = (aBounds[1] - aBounds[0]) + abs(aBounds[1]) + abs(aBounds[0]) > EPS;
 443         anIsYDimension = (aBounds[3] - aBounds[2]) + abs(aBounds[3]) + abs(aBounds[2]) > EPS;
 444         anIsZDimension = (aBounds[5] - aBounds[4]) + abs(aBounds[5]) + abs(aBounds[4]) > EPS;
 445         if ( myZTolerance > 0 && anIsZDimension )
 446           anIsZDimension = (aBounds[5] > myZTolerance || aBounds[4] < -myZTolerance );
 447         aSpaceDimension = Max( aMeshDimension, anIsXDimension + anIsYDimension + anIsZDimension );
 448         if ( !aSpaceDimension )
 449           aSpaceDimension = 3;
 450         // PAL16857(SMESH not conform to the MED convention):
 451         if ( aSpaceDimension == 2 && anIsZDimension ) // 2D only if mesh is in XOY plane
 452           aSpaceDimension = 3;
 453         // PAL18941(a saved study with a mesh belong Z is opened and the mesh is belong X)
 454         if ( aSpaceDimension == 1 && !anIsXDimension ) {// 1D only if mesh is along OX
 455           if ( anIsYDimension ) {
 456             aSpaceDimension = 2;
 457             anIsXDimension = true;
 458           } else {
 459             aSpaceDimension = 3;
 460           }
 461         }
 462       }
 463
 464       SMDS_NodeIteratorPtr aNodesIter = myMesh->nodesIterator();
 465       switch ( aSpaceDimension ) {
 466       case 3:
 467         aCoordHelperPtr.reset(new TCoordHelper(aNodesIter,aXYZGetCoord,aXYZName));
 468         break;
 469       case 2:
 470         if(anIsXDimension && anIsYDimension)
 471           aCoordHelperPtr.reset(new TCoordHelper(aNodesIter,aXYGetCoord,aXYName));
 472         if(anIsYDimension && anIsZDimension)
 473           aCoordHelperPtr.reset(new TCoordHelper(aNodesIter,aYZGetCoord,aYZName));
 474         if(anIsXDimension && anIsZDimension)
 475           aCoordHelperPtr.reset(new TCoordHelper(aNodesIter,aXZGetCoord,aXZName));
 476         break;
 477       case 1:
 478         if(anIsXDimension)
 479           aCoordHelperPtr.reset(new TCoordHelper(aNodesIter,aXGetCoord,aXName));
 480         if(anIsYDimension)
 481           aCoordHelperPtr.reset(new TCoordHelper(aNodesIter,aYGetCoord,aYName));
 482         if(anIsZDimension)
 483           aCoordHelperPtr.reset(new TCoordHelper(aNodesIter,aZGetCoord,aZName));
 484         break;
 485       }
 486     }
 487
 488     PMeshInfo aMeshInfo = myMed->CrMeshInfo(aMeshDimension,aSpaceDimension,aMeshName);
 489     //MESSAGE("Add - aMeshName : "<<aMeshName<<"; "<<aMeshInfo->GetName());
 490     myMed->SetMeshInfo(aMeshInfo);
 491
 492     // Storing SMDS groups and sub-meshes as med families
 493     //----------------------------------------------------
 494     int myNodesDefaultFamilyId      = 0;
 495     int my0DElementsDefaultFamilyId = 0;
 496     int myBallsDefaultFamilyId      = 0;
 497     int myEdgesDefaultFamilyId      = 0;
 498     int myFacesDefaultFamilyId      = 0;
 499     int myVolumesDefaultFamilyId    = 0;
 500     smIdType nbNodes      = myMesh->NbNodes();
 501     smIdType nb0DElements = myMesh->Nb0DElements();
 502     smIdType nbBalls      = myMesh->NbBalls();
 503     smIdType nbEdges      = myMesh->NbEdges();
 504     smIdType nbFaces      = myMesh->NbFaces();
 505     smIdType nbVolumes    = myMesh->NbVolumes();
 506     if (myDoGroupOfNodes)   myNodesDefaultFamilyId      = REST_NODES_FAMILY;
 507     if (myDoGroupOfEdges)   myEdgesDefaultFamilyId      = REST_EDGES_FAMILY;
 508     if (myDoGroupOfFaces)   myFacesDefaultFamilyId      = REST_FACES_FAMILY;
 509     if (myDoGroupOfVolumes) myVolumesDefaultFamilyId    = REST_VOLUMES_FAMILY;
 510     if (myDoGroupOf0DElems) my0DElementsDefaultFamilyId = REST_0DELEM_FAMILY;
 511     if (myDoGroupOfBalls)   myBallsDefaultFamilyId      = REST_BALL_FAMILY;
 512     if (myDoAllInGroups )
 513     {
 514       if (!myDoGroupOfEdges)   myEdgesDefaultFamilyId      = NIG_EDGES_FAMILY   ;
 515       if (!myDoGroupOfFaces)   myFacesDefaultFamilyId      = NIG_FACES_FAMILY   ;
 516       if (!myDoGroupOfVolumes) myVolumesDefaultFamilyId    = NIG_VOLS_FAMILY    ;
 517       if (!myDoGroupOf0DElems) my0DElementsDefaultFamilyId = NIG_0DELEM_FAMILY  ;
 518       if (!myDoGroupOfBalls)   myBallsDefaultFamilyId      = NIG_BALL_FAMILY    ;
 519     }
 520
 521     //MESSAGE("Perform - aFamilyInfo");
 522     list<DriverMED_FamilyPtr> aFamilies;
 523     if (myAllSubMeshes) {
 524       aFamilies = DriverMED_Family::MakeFamilies
 525         (myMesh->SubMeshes(), myGroups,
 526          myDoGroupOfNodes   && nbNodes,
 527          myDoGroupOfEdges   && nbEdges,
 528          myDoGroupOfFaces   && nbFaces,
 529          myDoGroupOfVolumes && nbVolumes,
 530          myDoGroupOf0DElems && nb0DElements,
 531          myDoGroupOfBalls   && nbBalls,
 532          myDoAllInGroups);
 533     }
 534     else {
 535       aFamilies = DriverMED_Family::MakeFamilies
 536         (getIterator( mySubMeshes ), myGroups,
 537          myDoGroupOfNodes   && nbNodes,
 538          myDoGroupOfEdges   && nbEdges,
 539          myDoGroupOfFaces   && nbFaces,
 540          myDoGroupOfVolumes && nbVolumes,
 541          myDoGroupOf0DElems && nb0DElements,
 542          myDoGroupOfBalls   && nbBalls,
 543          myDoAllInGroups);
 544     }
 545     list<DriverMED_FamilyPtr>::iterator aFamsIter;
 546     for (aFamsIter = aFamilies.begin(); aFamsIter != aFamilies.end(); aFamsIter++)
 547     {
 548       PFamilyInfo aFamilyInfo = (*aFamsIter)->GetFamilyInfo<LowLevelWriter>(myMed,aMeshInfo);
 549       myMed->SetFamilyInfo(aFamilyInfo);
 550     }
 551
 552     // Storing SMDS nodes to the MED file for the MED mesh
 553     //----------------------------------------------------
 554 #ifdef _EDF_NODE_IDS_
 555     typedef map<TInt,TInt> TNodeIdMap;
 556     TNodeIdMap aNodeIdMap;
 557 #endif
 558     const EModeSwitch   theMode        = eFULL_INTERLACE;
 559     const ERepere       theSystem      = eCART;
 560     const EBooleen      theIsElemNum   = eVRAI;
 561     const EBooleen      theIsElemNames = eFAUX;
 562     const EConnectivite theConnMode    = eNOD;
 563
 564     TInt aNbNodes = FromSmIdType<TInt>( myMesh->NbNodes() );
 565     PNodeInfo aNodeInfo = myMed->CrNodeInfo(aMeshInfo, aNbNodes,
 566                                             theMode, theSystem, theIsElemNum, theIsElemNames);
 567
 568     // find family numbers for nodes
 569     TElemFamilyMap anElemFamMap;
 570     fillElemFamilyMap( anElemFamMap, aFamilies, SMDSAbs_Node );
 571
 572     for (TInt iNode = 0; aCoordHelperPtr->Next(); iNode++)
 573     {
 574       // coordinates
 575       TCoordSlice aTCoordSlice = aNodeInfo->GetCoordSlice( iNode );
 576       for(TInt iCoord = 0; iCoord < aSpaceDimension; iCoord++){
 577         aTCoordSlice[iCoord] = aCoordHelperPtr->GetCoord(iCoord);
 578       }
 579       if ( aSpaceDimension == 3 &&
 580            -myZTolerance < aTCoordSlice[2] && aTCoordSlice[2] < myZTolerance )
 581         aTCoordSlice[2] = 0.;
 582
 583       // node number
 584       TInt aNodeID = FromSmIdType<TInt>( aCoordHelperPtr->GetID() );
 585       aNodeInfo->SetElemNum( iNode, aNodeID );
 586 #ifdef _EDF_NODE_IDS_
 587       aNodeIdMap.insert( aNodeIdMap.end(), make_pair( aNodeID, iNode+1 ));
 588 #endif
 589       // family number
 590       const SMDS_MeshNode* aNode = aCoordHelperPtr->GetNode();
 591       int famNum = getFamilyId( anElemFamMap, aNode, myNodesDefaultFamilyId );
 592       aNodeInfo->SetFamNum( iNode, famNum );
 593     }
 594     anElemFamMap.Clear();
 595
 596     // coordinate names and units
 597     for (TInt iCoord = 0; iCoord < aSpaceDimension; iCoord++) {
 598       aNodeInfo->SetCoordName( iCoord, aCoordHelperPtr->GetName(iCoord));
 599       aNodeInfo->SetCoordUnit( iCoord, aCoordHelperPtr->GetUnit(iCoord));
 600     }
 601
 602     //MESSAGE("Perform - aNodeInfo->GetNbElem() = "<<aNbNodes);
 603     myMed->SetNodeInfo(aNodeInfo);
 604     aNodeInfo.reset(); // free memory used for arrays
 605
 606
 607     // Storing SMDS elements to the MED file for the MED mesh
 608     //-------------------------------------------------------
 609     // Write one element type at once in order to minimize memory usage (PAL19276)
 610
 611     const SMDS_MeshInfo& nbElemInfo = myMesh->GetMeshInfo();
 612
 613     // poly elements are not supported by med-2.1
 614     bool polyTypesSupported = ( myMed->CrPolygoneInfo(aMeshInfo,eMAILLE,ePOLYGONE,0,0).get() != 0 );
 615     TInt nbPolygonNodes = 0, nbPolyhedronNodes = 0, nbPolyhedronFaces = 0;
 616
 617     // nodes on VERTEXes where 0D elements are absent
 618     std::vector<const SMDS_MeshElement*> nodesOf0D;
 619     std::vector< SMDS_ElemIteratorPtr > iterVec;
 620     SMDS_ElemIteratorPtr iterVecIter;
 621     if ( myAddODOnVertices && getNodesOfMissing0DOnVert( myMesh, nodesOf0D ))
 622     {
 623       iterVec.resize(2);
 624       iterVec[0] = myMesh->elementsIterator( SMDSAbs_0DElement );
 625       iterVec[1] = SMDS_ElemIteratorPtr
 626         ( new SMDS_ElementVectorIterator( nodesOf0D.begin(), nodesOf0D.end() ));
 627
 628       typedef SMDS_IteratorOnIterators
 629         < const SMDS_MeshElement *, std::vector< SMDS_ElemIteratorPtr > > TItIterator;
 630       iterVecIter = SMDS_ElemIteratorPtr( new TItIterator( iterVec ));
 631     }
 632
 633     // collect info on all geom types
 634
 635     list< TElemTypeData > aTElemTypeDatas;
 636
 637     EEntiteMaillage anEntity = eMAILLE;
 638 #ifdef _ELEMENTS_BY_DIM_
 639     anEntity = eNOEUD_ELEMENT;
 640 #endif
 641     aTElemTypeDatas.push_back(TElemTypeData(anEntity,
 642                                             ePOINT1,
 643                                             nbElemInfo.Nb0DElements() + nodesOf0D.size(),
 644                                             SMDSAbs_0DElement));
 645 #ifdef _ELEMENTS_BY_DIM_
 646     anEntity = eSTRUCT_ELEMENT;
 647 #endif
 648     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 649                                              eBALL,
 650                                              FromSmIdType<TInt>(nbElemInfo.NbBalls()),
 651                                              SMDSAbs_Ball));
 652 #ifdef _ELEMENTS_BY_DIM_
 653     anEntity = eARETE;
 654 #endif
 655     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 656                                              eSEG2,
 657                                              FromSmIdType<TInt>(nbElemInfo.NbEdges( ORDER_LINEAR )),
 658                                              SMDSAbs_Edge));
 659     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 660                                              eSEG3,
 661                                              FromSmIdType<TInt>(nbElemInfo.NbEdges( ORDER_QUADRATIC )),
 662                                              SMDSAbs_Edge));
 663 #ifdef _ELEMENTS_BY_DIM_
 664     anEntity = eFACE;
 665 #endif
 666     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 667                                              eTRIA3,
 668                                              FromSmIdType<TInt>(nbElemInfo.NbTriangles( ORDER_LINEAR )),
 669                                              SMDSAbs_Face));
 670     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 671                                              eTRIA6,
 672                                              FromSmIdType<TInt>(nbElemInfo.NbTriangles( ORDER_QUADRATIC ) -
 673                                              nbElemInfo.NbBiQuadTriangles()),
 674                                              SMDSAbs_Face));
 675     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 676                                              eTRIA7,
 677                                              FromSmIdType<TInt>(nbElemInfo.NbBiQuadTriangles()),
 678                                              SMDSAbs_Face));
 679     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 680                                              eQUAD4,
 681                                              FromSmIdType<TInt>(nbElemInfo.NbQuadrangles( ORDER_LINEAR )),
 682                                              SMDSAbs_Face));
 683     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 684                                              eQUAD8,
 685                                              FromSmIdType<TInt>(nbElemInfo.NbQuadrangles( ORDER_QUADRATIC ) -
 686                                              nbElemInfo.NbBiQuadQuadrangles()),
 687                                              SMDSAbs_Face));
 688     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 689                                              eQUAD9,
 690                                              FromSmIdType<TInt>(nbElemInfo.NbBiQuadQuadrangles()),
 691                                              SMDSAbs_Face));
 692     if ( polyTypesSupported ) {
 693       aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 694                                                ePOLYGONE,
 695                                                FromSmIdType<TInt>(nbElemInfo.NbPolygons( ORDER_LINEAR )),
 696                                                SMDSAbs_Face));
 697       // we need one more loop on poly elements to count nb of their nodes
 698       aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 699                                                ePOLYGONE,
 700                                                FromSmIdType<TInt>(nbElemInfo.NbPolygons( ORDER_LINEAR )),
 701                                                SMDSAbs_Face));
 702       aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 703                                                ePOLYGON2,
 704                                                FromSmIdType<TInt>(nbElemInfo.NbPolygons( ORDER_QUADRATIC )),
 705                                                SMDSAbs_Face));
 706       // we need one more loop on QUAD poly elements to count nb of their nodes
 707       aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 708                                                ePOLYGON2,
 709                                                FromSmIdType<TInt>(nbElemInfo.NbPolygons( ORDER_QUADRATIC )),
 710                                                SMDSAbs_Face));
 711     }
 712 #ifdef _ELEMENTS_BY_DIM_
 713     anEntity = eMAILLE;
 714 #endif
 715     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 716                                              eTETRA4,
 717                                              FromSmIdType<TInt>(nbElemInfo.NbTetras( ORDER_LINEAR )),
 718                                              SMDSAbs_Volume));
 719     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 720                                              eTETRA10,
 721                                              FromSmIdType<TInt>(nbElemInfo.NbTetras( ORDER_QUADRATIC )),
 722                                              SMDSAbs_Volume));
 723     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 724                                              ePYRA5,
 725                                              FromSmIdType<TInt>(nbElemInfo.NbPyramids( ORDER_LINEAR )),
 726                                              SMDSAbs_Volume));
 727     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 728                                              ePYRA13,
 729                                              FromSmIdType<TInt>(nbElemInfo.NbPyramids( ORDER_QUADRATIC )),
 730                                              SMDSAbs_Volume));
 731     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 732                                              ePENTA6,
 733                                              FromSmIdType<TInt>(nbElemInfo.NbPrisms( ORDER_LINEAR )),
 734                                              SMDSAbs_Volume));
 735     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 736                                              ePENTA15,
 737                                              FromSmIdType<TInt>(nbElemInfo.NbQuadPrisms()),
 738                                              SMDSAbs_Volume));
 739     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 740                                              ePENTA18,
 741                                              FromSmIdType<TInt>(nbElemInfo.NbBiQuadPrisms()),
 742                                              SMDSAbs_Volume));
 743     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 744                                              eHEXA8,
 745                                              FromSmIdType<TInt>(nbElemInfo.NbHexas( ORDER_LINEAR )),
 746                                              SMDSAbs_Volume));
 747     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 748                                              eHEXA20,
 749                                              FromSmIdType<TInt>(nbElemInfo.NbHexas( ORDER_QUADRATIC )-
 750                                              nbElemInfo.NbTriQuadHexas()),
 751                                              SMDSAbs_Volume));
 752     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 753                                              eHEXA27,
 754                                              FromSmIdType<TInt>(nbElemInfo.NbTriQuadHexas()),
 755                                              SMDSAbs_Volume));
 756     aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 757                                              eOCTA12,
 758                                              FromSmIdType<TInt>(nbElemInfo.NbHexPrisms()),
 759                                              SMDSAbs_Volume));
 760     if ( polyTypesSupported ) {
 761       aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 762                                                ePOLYEDRE,
 763                                                FromSmIdType<TInt>(nbElemInfo.NbPolyhedrons()),
 764                                                SMDSAbs_Volume));
 765       // we need one more loop on poly elements to count nb of their nodes
 766       aTElemTypeDatas.push_back( TElemTypeData(anEntity,
 767                                                ePOLYEDRE,
 768                                                FromSmIdType<TInt>(nbElemInfo.NbPolyhedrons()),
 769                                                SMDSAbs_Volume));
 770     }
 771
 772     vector< bool > isElemFamMapBuilt( SMDSAbs_NbElementTypes, false );
 773
 774     // loop on all geom types of elements
 775
 776     list< TElemTypeData >::iterator aElemTypeData = aTElemTypeDatas.begin();
 777     for ( ; aElemTypeData != aTElemTypeDatas.end(); ++aElemTypeData )
 778     {
 779       if ( aElemTypeData->_nbElems == 0 )
 780         continue;
 781
 782       int defaultFamilyId = 0;
 783       switch ( aElemTypeData->_smdsType ) {
 784       case SMDSAbs_0DElement: defaultFamilyId = my0DElementsDefaultFamilyId; break;
 785       case SMDSAbs_Ball:      defaultFamilyId = myBallsDefaultFamilyId;      break;
 786       case SMDSAbs_Edge:      defaultFamilyId = myEdgesDefaultFamilyId;      break;
 787       case SMDSAbs_Face:      defaultFamilyId = myFacesDefaultFamilyId;      break;
 788       case SMDSAbs_Volume:    defaultFamilyId = myVolumesDefaultFamilyId;    break;
 789       default:
 790         continue;
 791       }
 792
 793       // build map of family numbers for this type
 794       if ( !isElemFamMapBuilt[ aElemTypeData->_smdsType ])
 795       {
 796         fillElemFamilyMap( anElemFamMap, aFamilies, aElemTypeData->_smdsType );
 797         isElemFamMapBuilt[ aElemTypeData->_smdsType ] = true;
 798       }
 799
 800       // iterator on elements of a current type
 801       SMDS_ElemIteratorPtr elemIterator;
 802       int iElem = 0;
 803
 804       // Treat POLYGONs
 805       // ---------------
 806       if ( aElemTypeData->_geomType == ePOLYGONE ||
 807            aElemTypeData->_geomType == ePOLYGON2 )
 808       {
 809         if ( aElemTypeData->_geomType == ePOLYGONE )
 810           elemIterator = myMesh->elementEntityIterator( SMDSEntity_Polygon );
 811         else
 812           elemIterator = myMesh->elementEntityIterator( SMDSEntity_Quad_Polygon );
 813
 814         if ( nbPolygonNodes == 0 ) {
 815           // Count nb of nodes
 816           while ( elemIterator->more() ) {
 817             const SMDS_MeshElement* anElem = elemIterator->next();
 818             nbPolygonNodes += anElem->NbNodes();
 819             if ( ++iElem == aElemTypeData->_nbElems )
 820               break;
 821           }
 822         }
 823         else {
 824           // Store in med file
 825           PPolygoneInfo aPolygoneInfo = myMed->CrPolygoneInfo(aMeshInfo,
 826                                                               aElemTypeData->_entity,
 827                                                               aElemTypeData->_geomType,
 828                                                               aElemTypeData->_nbElems,
 829                                                               nbPolygonNodes,
 830                                                               theConnMode, theIsElemNum,
 831                                                               theIsElemNames);
 832           TElemNum & index = *(aPolygoneInfo->myIndex.get());
 833           index[0] = 1;
 834
 835           while ( elemIterator->more() )
 836           {
 837             const SMDS_MeshElement* anElem = elemIterator->next();
 838             // index
 839             TInt aNbNodes = anElem->NbNodes();
 840             index[ iElem+1 ] = index[ iElem ] + aNbNodes;
 841
 842             // connectivity
 843             TConnSlice aTConnSlice = aPolygoneInfo->GetConnSlice( iElem );
 844             for(TInt iNode = 0; iNode < aNbNodes; iNode++) {
 845               const SMDS_MeshElement* aNode = anElem->GetNode( iNode );
 846 #ifdef _EDF_NODE_IDS_
 847               aTConnSlice[ iNode ] = aNodeIdMap[FromSmIdType<TInt>(aNode->GetID())];
 848 #else
 849               aTConnSlice[ iNode ] = aNode->GetID();
 850 #endif
 851             }
 852             // element number
 853             aPolygoneInfo->SetElemNum( iElem, FromSmIdType<TInt>(anElem->GetID()) );
 854
 855             // family number
 856             int famNum = getFamilyId( anElemFamMap, anElem, defaultFamilyId );
 857             aPolygoneInfo->SetFamNum( iElem, famNum );
 858
 859             if ( ++iElem == aPolygoneInfo->GetNbElem() )
 860               break;
 861           }
 862           myMed->SetPolygoneInfo(aPolygoneInfo);
 863
 864           nbPolygonNodes = 0; // to treat next polygon type
 865         }
 866       }
 867
 868       // Treat POLYEDREs
 869       // ----------------
 870       else if ( aElemTypeData->_geomType == ePOLYEDRE )
 871       {
 872         elemIterator = myMesh->elementGeomIterator( SMDSGeom_POLYHEDRA );
 873
 874         if ( nbPolyhedronNodes == 0 ) {
 875           // Count nb of nodes
 876           while ( elemIterator->more() ) {
 877             const SMDS_MeshElement*  anElem = elemIterator->next();
 878             nbPolyhedronNodes += anElem->NbNodes();
 879             nbPolyhedronFaces += anElem->NbFaces();
 880             if ( ++iElem == aElemTypeData->_nbElems )
 881               break;
 882           }
 883         }
 884         else {
 885           // Store in med file
 886           PPolyedreInfo aPolyhInfo = myMed->CrPolyedreInfo(aMeshInfo,
 887                                                            aElemTypeData->_entity,
 888                                                            aElemTypeData->_geomType,
 889                                                            aElemTypeData->_nbElems,
 890                                                            nbPolyhedronFaces+1,
 891                                                            nbPolyhedronNodes,
 892                                                            theConnMode,
 893                                                            theIsElemNum,
 894                                                            theIsElemNames);
 895           TElemNum & index = *(aPolyhInfo->myIndex.get());
 896           TElemNum & faces = *(aPolyhInfo->myFaces.get());
 897           TElemNum & conn  = *(aPolyhInfo->myConn.get());
 898           index[0] = 1;
 899           faces[0] = 1;
 900
 901           TInt iFace = 0, iNode = 0;
 902           while ( elemIterator->more() )
 903           {
 904             const SMDS_MeshElement* anElem = elemIterator->next();
 905             const SMDS_MeshVolume *aPolyedre = myMesh->DownCast< SMDS_MeshVolume >( anElem );
 906             if ( !aPolyedre ) continue;
 907             // index
 908             TInt aNbFaces = aPolyedre->NbFaces();
 909             index[ iElem+1 ] = index[ iElem ] + aNbFaces;
 910
 911             // face index
 912             for (TInt f = 1; f <= aNbFaces; ++f, ++iFace ) {
 913               int aNbFaceNodes = aPolyedre->NbFaceNodes( f );
 914               faces[ iFace+1 ] = faces[ iFace ] + aNbFaceNodes;
 915             }
 916             // connectivity
 917             SMDS_ElemIteratorPtr nodeIt = anElem->nodesIterator();
 918             while ( nodeIt->more() ) {
 919               const SMDS_MeshElement* aNode = nodeIt->next();
 920 #ifdef _EDF_NODE_IDS_
 921               conn[ iNode ] = aNodeIdMap[FromSmIdType<TInt>(aNode->GetID())];
 922 #else
 923               conn[ iNode ] = aNode->GetID();
 924 #endif
 925               ++iNode;
 926             }
 927             // element number
 928             aPolyhInfo->SetElemNum( iElem, FromSmIdType<TInt>(anElem->GetID()) );
 929
 930             // family number
 931             int famNum = getFamilyId( anElemFamMap, anElem, defaultFamilyId );
 932             aPolyhInfo->SetFamNum( iElem, famNum );
 933
 934             if ( ++iElem == aPolyhInfo->GetNbElem() )
 935               break;
 936           }
 937           myMed->SetPolyedreInfo(aPolyhInfo);
 938         }
 939       } // if (aElemTypeData->_geomType == ePOLYEDRE )
 940
 941       // Treat BALLs
 942       // ----------------
 943       else if (aElemTypeData->_geomType == eBALL )
 944       {
 945         // allocate data arrays
 946         PBallInfo aBallInfo = myMed->CrBallInfo( aMeshInfo, aElemTypeData->_nbElems );
 947
 948         elemIterator = myMesh->elementsIterator( SMDSAbs_Ball );
 949         while ( elemIterator->more() )
 950         {
 951           const SMDS_MeshElement* anElem = elemIterator->next();
 952           // connectivity
 953           const SMDS_MeshElement* aNode = anElem->GetNode( 0 );
 954 #ifdef _EDF_NODE_IDS_
 955           (*aBallInfo->myConn)[ iElem ] = aNodeIdMap[FromSmIdType<TInt>(aNode->GetID())];
 956 #else
 957           (*aBallInfo->myConn)[ iElem ] = aNode->GetID();
 958 #endif
 959           // element number
 960           aBallInfo->SetElemNum( iElem, FromSmIdType<TInt>(anElem->GetID()) );
 961
 962           // diameter
 963           aBallInfo->myDiameters[ iElem ] =
 964             static_cast<const SMDS_BallElement*>( anElem )->GetDiameter();
 965
 966           // family number
 967           int famNum = getFamilyId( anElemFamMap, anElem, defaultFamilyId );
 968           aBallInfo->SetFamNum( iElem, famNum );
 969           ++iElem;
 970         }
 971         // store data in a file
 972         myMed->SetBallInfo(aBallInfo);
 973       }
 974
 975       else
 976       {
 977         // Treat standard types
 978         // ---------------------
 979         // allocate data arrays
 980         PCellInfo aCellInfo = myMed->CrCellInfo( aMeshInfo,
 981                                                  aElemTypeData->_entity,
 982                                                  aElemTypeData->_geomType,
 983                                                  aElemTypeData->_nbElems,
 984                                                  theConnMode,
 985                                                  theIsElemNum,
 986                                                  theIsElemNames);
 987
 988         TInt aNbNodes = MED::GetNbNodes(aElemTypeData->_geomType);
 989         elemIterator = myMesh->elementsIterator( aElemTypeData->_smdsType );
 990         if ( aElemTypeData->_smdsType == SMDSAbs_0DElement && ! nodesOf0D.empty() )
 991           elemIterator = iterVecIter;
 992         while ( elemIterator->more() )
 993         {
 994           const SMDS_MeshElement* anElem = elemIterator->next();
 995           if ( anElem->NbNodes() != aNbNodes || anElem->IsPoly() )
 996             continue; // other geometry
 997
 998           // connectivity
 999           TConnSlice aTConnSlice = aCellInfo->GetConnSlice( iElem );
1000           for (TInt iNode = 0; iNode < aNbNodes; iNode++) {
1001             const SMDS_MeshElement* aNode = anElem->GetNode( iNode );
1002 #ifdef _EDF_NODE_IDS_
1003             aTConnSlice[ iNode ] = aNodeIdMap[FromSmIdType<TInt>(aNode->GetID())];
1004 #else
1005             aTConnSlice[ iNode ] = aNode->GetID();
1006 #endif
1007           }
1008           // element number
1009           aCellInfo->SetElemNum( iElem, FromSmIdType<TInt>(anElem->GetID()) );
1010
1011           // family number
1012           int famNum = getFamilyId( anElemFamMap, anElem, defaultFamilyId );
1013           aCellInfo->SetFamNum( iElem, famNum );
1014
1015           if ( ++iElem == aCellInfo->GetNbElem() )
1016             break;
1017         }
1018         // store data in a file
1019         myMed->SetCellInfo(aCellInfo);
1020       }
1021     } // loop on geom types
1022   }
1023   catch(const std::exception& exc) {
1024     INFOS("The following exception was caught:\n\t"<<exc.what());
1025     throw;
1026   }
1027   catch(...) {
1028     INFOS("Unknown exception was caught !!!");
1029     throw;
1030   }
1031
1032   myMeshId = -1;
1033   myGroups.clear();
1034   mySubMeshes.clear();
1035   return aResult;
1036 }
1037
1038 //================================================================================
1039 /*!
1040  * \brief Returns nodes on VERTEXes where 0D elements are absent
1041  */
1042 //================================================================================
1043
1044 bool DriverMED_W_SMESHDS_Mesh::
1045 getNodesOfMissing0DOnVert(SMESHDS_Mesh*                         meshDS,
1046                           std::vector<const SMDS_MeshElement*>& nodes)
1047 {
1048   nodes.clear();
1049   for ( int i = 1; i <= meshDS->MaxShapeIndex(); ++i )
1050   {
1051     if ( meshDS->IndexToShape( i ).ShapeType() != TopAbs_VERTEX )
1052       continue;
1053     if ( SMESHDS_SubMesh* sm = meshDS->MeshElements(i) ) {
1054       SMDS_NodeIteratorPtr nIt= sm->GetNodes();
1055       while (nIt->more())
1056       {
1057         const SMDS_MeshNode* n = nIt->next();
1058         if ( n->NbInverseElements( SMDSAbs_0DElement ) == 0 )
1059           nodes.push_back( n );
1060       }
1061     }
1062   }
1063   return !nodes.empty();
1064 }