src/Plugins/VoroGauss/IO/vtkVoroGauss.cxx

   1 // Copyright (C) 2017-2019  EDF R&D
   2 //
   3 // This library is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU Lesser General Public
   5 // License as published by the Free Software Foundation; either
   6 // version 2.1 of the License, or (at your option) any later version.
   7 //
   8 // This library is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // Lesser General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU Lesser General Public
  14 // License along with this library; if not, write to the Free Software
  15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  16 //
  17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  18 //
  19 // Author : Anthony Geay (EDF R&D)
  20
  21 #include "vtkVoroGauss.h"
  22
  23 #include "vtkAdjacentVertexIterator.h"
  24 #include "vtkIntArray.h"
  25 #include "vtkCellData.h"
  26 #include "vtkPointData.h"
  27 #include "vtkCellType.h"
  28 #include "vtkCell.h"
  29 #include "vtkCellArray.h"
  30 #include "vtkIdTypeArray.h"
  31
  32 #include "vtkStreamingDemandDrivenPipeline.h"
  33 #include "vtkUnstructuredGrid.h"
  34 #include  "vtkMultiBlockDataSet.h"
  35
  36 #include "vtkInformationStringKey.h"
  37 #include "vtkAlgorithmOutput.h"
  38 #include "vtkObjectFactory.h"
  39 #include "vtkMutableDirectedGraph.h"
  40 #include "vtkMultiBlockDataSet.h"
  41 #include "vtkDataSet.h"
  42 #include "vtkInformationVector.h"
  43 #include "vtkInformation.h"
  44 #include "vtkDataArraySelection.h"
  45 #include "vtkTimeStamp.h"
  46 #include "vtkInEdgeIterator.h"
  47 #include "vtkInformationDataObjectKey.h"
  48 #include "vtkInformationDataObjectMetaDataKey.h"
  49 #include "vtkInformationDoubleVectorKey.h"
  50 #include "vtkExecutive.h"
  51 #include "vtkVariantArray.h"
  52 #include "vtkStringArray.h"
  53 #include "vtkDoubleArray.h"
  54 #include "vtkFloatArray.h"
  55 #include "vtkCharArray.h"
  56 #include "vtkLongArray.h"
  57 #include "vtkUnsignedCharArray.h"
  58 #include "vtkDataSetAttributes.h"
  59 #include "vtkDemandDrivenPipeline.h"
  60 #include "vtkDataObjectTreeIterator.h"
  61 #include "vtkWarpScalar.h"
  62 #include "vtkQuadratureSchemeDefinition.h"
  63 #include "vtkInformationQuadratureSchemeDefinitionVectorKey.h"
  64 #include "vtkCompositeDataToUnstructuredGridFilter.h"
  65 #include "vtkMultiBlockDataGroupFilter.h"
  66
  67 #include "MEDCouplingMemArray.hxx"
  68 #include "MEDCouplingMemArray.txx"
  69 #include "MEDCouplingUMesh.hxx"
  70 #include "MEDCouplingFieldDouble.hxx"
  71 #include "InterpKernelAutoPtr.hxx"
  72 #include "InterpKernelGaussCoords.hxx"
  73
  74 #include <map>
  75 #include <set>
  76 #include <deque>
  77 #include <sstream>
  78
  79 using MEDCoupling::DataArray;
  80 using MEDCoupling::DataArrayInt32;
  81 using MEDCoupling::DataArrayInt64;
  82 using MEDCoupling::DataArrayDouble;
  83 using MEDCoupling::MEDCouplingMesh;
  84 using MEDCoupling::MEDCouplingUMesh;
  85 using MEDCoupling::DynamicCastSafe;
  86 using MEDCoupling::MEDCouplingFieldDouble;
  87 using MEDCoupling::ON_GAUSS_PT;
  88 using MEDCoupling::MCAuto;
  89
  90 vtkStandardNewMacro(vtkVoroGauss);
  91 ///////////////////
  92
  93 std::map<int,int> ComputeMapOfType()
  94 {
  95   std::map<int,int> ret;
  96   int nbOfTypesInMC(sizeof(MEDCOUPLING2VTKTYPETRADUCER)/sizeof( decltype(MEDCOUPLING2VTKTYPETRADUCER[0]) ));
  97   for(int i=0;i<nbOfTypesInMC;i++)
  98     {
  99       auto vtkId(MEDCOUPLING2VTKTYPETRADUCER[i]);
 100       if(vtkId!=MEDCOUPLING2VTKTYPETRADUCER_NONE)
 101         ret[vtkId]=i;
 102     }
 103   return ret;
 104 }
 105
 106 std::map<int,int> ComputeRevMapOfType()
 107 {
 108   std::map<int,int> ret;
 109   int nbOfTypesInMC(sizeof(MEDCOUPLING2VTKTYPETRADUCER)/sizeof( decltype(MEDCOUPLING2VTKTYPETRADUCER[0]) ));
 110   for(int i=0;i<nbOfTypesInMC;i++)
 111     {
 112       auto vtkId(MEDCOUPLING2VTKTYPETRADUCER[i]);
 113       if(vtkId!=MEDCOUPLING2VTKTYPETRADUCER_NONE)
 114         ret[i]=vtkId;
 115     }
 116   return ret;
 117 }
 118
 119 ///////////////////
 120
 121 vtkInformationDoubleVectorKey *GetMEDReaderMetaDataIfAny()
 122 {
 123   static const char ZE_KEY[]="vtkMEDReader::GAUSS_DATA";
 124   MEDCoupling::GlobalDict *gd(MEDCoupling::GlobalDict::GetInstance());
 125   if(!gd->hasKey(ZE_KEY))
 126     return 0;
 127   std::string ptSt(gd->value(ZE_KEY));
 128   void *pt(0);
 129   std::istringstream iss(ptSt); iss >> pt;
 130   return reinterpret_cast<vtkInformationDoubleVectorKey *>(pt);
 131 }
 132
 133 bool IsInformationOK(vtkInformation *info, std::vector<double>& data)
 134 {
 135   vtkInformationDoubleVectorKey *key(GetMEDReaderMetaDataIfAny());
 136   if(!key)
 137     return false;
 138   // Check the information contain meta data key
 139   if(!info->Has(key))
 140     return false;
 141   int lgth(key->Length(info));
 142   const double *data2(info->Get(key));
 143   data.insert(data.end(),data2,data2+lgth);
 144   return true;
 145 }
 146
 147 void ExtractInfo(vtkInformationVector *inputVector, vtkUnstructuredGrid *& usgIn)
 148 {
 149   vtkInformation *inputInfo(inputVector->GetInformationObject(0));
 150   vtkDataSet *input(0);
 151   vtkDataSet *input0(vtkDataSet::SafeDownCast(inputInfo->Get(vtkDataObject::DATA_OBJECT())));
 152   vtkMultiBlockDataSet *input1(vtkMultiBlockDataSet::SafeDownCast(inputInfo->Get(vtkDataObject::DATA_OBJECT())));
 153   if(input0)
 154     input=input0;
 155   else
 156     {
 157       if(!input1)
 158         throw INTERP_KERNEL::Exception("Input dataSet must be a DataSet or single elt multi block dataset expected !");
 159       if(input1->GetNumberOfBlocks()!=1)
 160         throw INTERP_KERNEL::Exception("Input dataSet is a multiblock dataset with not exactly one block ! Use MergeBlocks or ExtractBlocks filter before calling this filter !");
 161       vtkDataObject *input2(input1->GetBlock(0));
 162       if(!input2)
 163         throw INTERP_KERNEL::Exception("Input dataSet is a multiblock dataset with exactly one block but this single element is NULL !");
 164       vtkDataSet *input2c(vtkDataSet::SafeDownCast(input2));
 165       if(!input2c)
 166         throw INTERP_KERNEL::Exception("Input dataSet is a multiblock dataset with exactly one block but this single element is not a dataset ! Use MergeBlocks or ExtractBlocks filter before calling this filter !");
 167       input=input2c;
 168     }
 169   if(!input)
 170     throw INTERP_KERNEL::Exception("Input data set is NULL !");
 171   usgIn=vtkUnstructuredGrid::SafeDownCast(input);
 172   if(!usgIn)
 173     throw INTERP_KERNEL::Exception("Input data set is not an unstructured mesh ! This filter works only on unstructured meshes !");
 174 }
 175
 176 DataArrayIdType *ConvertVTKArrayToMCArrayInt(vtkDataArray *data)
 177 {
 178   if(!data)
 179     throw INTERP_KERNEL::Exception("ConvertVTKArrayToMCArrayInt : internal error !");
 180   int nbTuples(data->GetNumberOfTuples()),nbComp(data->GetNumberOfComponents());
 181   std::size_t nbElts(nbTuples*nbComp);
 182   MCAuto<DataArrayIdType> ret(DataArrayIdType::New());
 183   ret->alloc(nbTuples,nbComp);
 184   for(int i=0;i<nbComp;i++)
 185     {
 186       const char *comp(data->GetComponentName(i));
 187       if(comp)
 188         ret->setInfoOnComponent(i,comp);
 189     }
 190   mcIdType *ptOut(ret->getPointer());
 191   vtkIntArray *d0(vtkIntArray::SafeDownCast(data));
 192   if(d0)
 193     {
 194       const int *pt(d0->GetPointer(0));
 195       std::copy(pt,pt+nbElts,ptOut);
 196       return ret.retn();
 197     }
 198   vtkLongArray *d1(vtkLongArray::SafeDownCast(data));
 199   if(d1)
 200     {
 201       const long *pt(d1->GetPointer(0));
 202       std::copy(pt,pt+nbElts,ptOut);
 203       return ret.retn();
 204     }
 205   vtkIdTypeArray *d2(vtkIdTypeArray::SafeDownCast(data));
 206   if(d2)
 207     {
 208       const int *pt(d2->GetPointer(0));
 209       std::copy(pt,pt+nbElts,ptOut);
 210       return ret.retn();
 211     }
 212   std::ostringstream oss;
 213   oss << "ConvertVTKArrayToMCArrayInt : unrecognized array \"" << typeid(*data).name() << "\" type !";
 214   throw INTERP_KERNEL::Exception(oss.str());
 215 }
 216
 217 DataArrayDouble *ConvertVTKArrayToMCArrayDouble(vtkDataArray *data)
 218 {
 219   if(!data)
 220     throw INTERP_KERNEL::Exception("ConvertVTKArrayToMCArrayDouble : internal error !");
 221   int nbTuples(data->GetNumberOfTuples()),nbComp(data->GetNumberOfComponents());
 222   std::size_t nbElts(nbTuples*nbComp);
 223   MCAuto<DataArrayDouble> ret(DataArrayDouble::New());
 224   ret->alloc(nbTuples,nbComp);
 225   for(int i=0;i<nbComp;i++)
 226     {
 227       const char *comp(data->GetComponentName(i));
 228       if(comp)
 229         ret->setInfoOnComponent(i,comp);
 230     }
 231   double *ptOut(ret->getPointer());
 232   vtkFloatArray *d0(vtkFloatArray::SafeDownCast(data));
 233   if(d0)
 234     {
 235       const float *pt(d0->GetPointer(0));
 236       for(std::size_t i=0;i<nbElts;i++)
 237         ptOut[i]=pt[i];
 238       return ret.retn();
 239     }
 240   vtkDoubleArray *d1(vtkDoubleArray::SafeDownCast(data));
 241   if(d1)
 242     {
 243       const double *pt(d1->GetPointer(0));
 244       std::copy(pt,pt+nbElts,ptOut);
 245       return ret.retn();
 246     }
 247   std::ostringstream oss;
 248   oss << "ConvertVTKArrayToMCArrayDouble : unrecognized array \"" << typeid(*data).name() << "\" type !";
 249   throw INTERP_KERNEL::Exception(oss.str());
 250 }
 251
 252 DataArray *ConvertVTKArrayToMCArray(vtkDataArray *data)
 253 {
 254   if(!data)
 255     throw INTERP_KERNEL::Exception("ConvertVTKArrayToMCArray : internal error !");
 256   vtkFloatArray *d0(vtkFloatArray::SafeDownCast(data));
 257   vtkDoubleArray *d1(vtkDoubleArray::SafeDownCast(data));
 258   if(d0 || d1)
 259     return ConvertVTKArrayToMCArrayDouble(data);
 260   vtkIntArray *d2(vtkIntArray::SafeDownCast(data));
 261   vtkLongArray *d3(vtkLongArray::SafeDownCast(data));
 262   if(d2 || d3)
 263     return ConvertVTKArrayToMCArrayInt(data);
 264   std::ostringstream oss;
 265   oss << "ConvertVTKArrayToMCArray : unrecognized array \"" << typeid(*data).name() << "\" type !";
 266   throw INTERP_KERNEL::Exception(oss.str());
 267 }
 268
 269 DataArrayDouble *BuildCoordsFrom(vtkPointSet *ds)
 270 {
 271   if(!ds)
 272     throw INTERP_KERNEL::Exception("BuildCoordsFrom : internal error !");
 273   vtkPoints *pts(ds->GetPoints());
 274   if(!pts)
 275     throw INTERP_KERNEL::Exception("BuildCoordsFrom : internal error 2 !");
 276   vtkDataArray *data(pts->GetData());
 277   if(!data)
 278     throw INTERP_KERNEL::Exception("BuildCoordsFrom : internal error 3 !");
 279   MCAuto<DataArrayDouble> coords(ConvertVTKArrayToMCArrayDouble(data));
 280   return coords.retn();
 281 }
 282
 283 void ConvertFromUnstructuredGrid(vtkUnstructuredGrid *ds, std::vector< MCAuto<MEDCouplingUMesh> >& ms, std::vector< MCAuto<DataArrayIdType> >& ids)
 284 {
 285   MCAuto<DataArrayDouble> coords(BuildCoordsFrom(ds));
 286   vtkIdType nbCells(ds->GetNumberOfCells());
 287   vtkCellArray *ca(ds->GetCells());
 288   if(!ca)
 289     return ;
 290   vtkIdType nbEnt(ca->GetNumberOfConnectivityEntries());
 291   vtkIdType *caPtr(ca->GetPointer());
 292   vtkUnsignedCharArray *ct(ds->GetCellTypesArray());
 293   if(!ct)
 294     throw INTERP_KERNEL::Exception("ConvertFromUnstructuredGrid : internal error");
 295   vtkIdTypeArray *cla(ds->GetCellLocationsArray());
 296   const vtkIdType *claPtr(cla->GetPointer(0));
 297   if(!cla)
 298     throw INTERP_KERNEL::Exception("ConvertFromUnstructuredGrid : internal error 2");
 299   const unsigned char *ctPtr(ct->GetPointer(0));
 300   std::map<int,int> m(ComputeMapOfType());
 301   MCAuto<DataArrayInt> lev(DataArrayInt::New()) ;  lev->alloc(nbCells,1);
 302   int *levPtr(lev->getPointer());
 303   for(vtkIdType i=0;i<nbCells;i++)
 304     {
 305       std::map<int,int>::iterator it(m.find(ctPtr[i]));
 306       if(it!=m.end())
 307         {
 308           const INTERP_KERNEL::CellModel& cm(INTERP_KERNEL::CellModel::GetCellModel((INTERP_KERNEL::NormalizedCellType)(*it).second));
 309           levPtr[i]=cm.getDimension();
 310         }
 311       else
 312         {
 313           std::ostringstream oss; oss << "ConvertFromUnstructuredGrid : at pos #" << i << " unrecognized VTK cell with type =" << ctPtr[i];
 314           throw INTERP_KERNEL::Exception(oss.str());
 315         }
 316     }
 317   MCAuto<DataArrayInt> levs(lev->getDifferentValues());
 318   vtkIdTypeArray *faces(ds->GetFaces()),*faceLoc(ds->GetFaceLocations());
 319   for(const int *curLev=levs->begin();curLev!=levs->end();curLev++)
 320     {
 321       MCAuto<MEDCouplingUMesh> m0(MEDCouplingUMesh::New("",*curLev));
 322       m0->setCoords(coords); m0->allocateCells();
 323       MCAuto<DataArrayIdType> cellIdsCurLev(lev->findIdsEqual(*curLev));
 324       for(const mcIdType *cellId=cellIdsCurLev->begin();cellId!=cellIdsCurLev->end();cellId++)
 325         {
 326           std::map<int,int>::iterator it(m.find(ctPtr[*cellId]));
 327           vtkIdType offset(claPtr[*cellId]);
 328           vtkIdType sz(caPtr[offset]);
 329           INTERP_KERNEL::NormalizedCellType ct((INTERP_KERNEL::NormalizedCellType)(*it).second);
 330           if(ct!=INTERP_KERNEL::NORM_POLYHED)
 331             {
 332               std::vector<mcIdType> conn2(sz);
 333               for(int kk=0;kk<sz;kk++)
 334                 conn2[kk]=caPtr[offset+1+kk];
 335               m0->insertNextCell(ct,sz,&conn2[0]);
 336             }
 337           else
 338             {
 339               if(!faces || !faceLoc)
 340                 throw INTERP_KERNEL::Exception("ConvertFromUnstructuredGrid : faces are expected when there are polyhedra !");
 341               const vtkIdType *facPtr(faces->GetPointer(0)),*facLocPtr(faceLoc->GetPointer(0));
 342               std::vector<mcIdType> conn;
 343               int off0(facLocPtr[*cellId]);
 344               int nbOfFaces(facPtr[off0++]);
 345               for(int k=0;k<nbOfFaces;k++)
 346                 {
 347                   int nbOfNodesInFace(facPtr[off0++]);
 348                   std::copy(facPtr+off0,facPtr+off0+nbOfNodesInFace,std::back_inserter(conn));
 349                   off0+=nbOfNodesInFace;
 350                   if(k<nbOfFaces-1)
 351                     conn.push_back(-1);
 352                 }
 353               m0->insertNextCell(ct,ToIdType(conn.size()),&conn[0]);
 354             }
 355         }
 356       ms.push_back(m0); ids.push_back(cellIdsCurLev);
 357     }
 358 }
 359
 360 vtkSmartPointer<vtkUnstructuredGrid> ConvertUMeshFromMCToVTK(const MEDCouplingUMesh *mVor)
 361 {
 362   std::map<int,int> zeMapRev(ComputeRevMapOfType());
 363   int nbCells(mVor->getNumberOfCells());
 364   vtkSmartPointer<vtkUnstructuredGrid> ret(vtkSmartPointer<vtkUnstructuredGrid>::New());
 365   ret->Initialize();
 366   ret->Allocate();
 367   vtkSmartPointer<vtkPoints> points(vtkSmartPointer<vtkPoints>::New());
 368   {
 369     const DataArrayDouble *vorCoords(mVor->getCoords());
 370     vtkSmartPointer<vtkDoubleArray> da(vtkSmartPointer<vtkDoubleArray>::New());
 371     da->SetNumberOfComponents((vtkIdType)vorCoords->getNumberOfComponents());
 372     da->SetNumberOfTuples((vtkIdType)vorCoords->getNumberOfTuples());
 373     std::copy(vorCoords->begin(),vorCoords->end(),da->GetPointer(0));
 374     points->SetData(da);
 375   }
 376   mVor->checkConsistencyLight();
 377   switch(mVor->getMeshDimension())
 378     {
 379     case 3:
 380       {
 381         int *cPtr(nullptr),*dPtr(nullptr);
 382         unsigned char *aPtr(nullptr);
 383         vtkSmartPointer<vtkUnsignedCharArray> cellTypes(vtkSmartPointer<vtkUnsignedCharArray>::New());
 384         {
 385           cellTypes->SetNumberOfComponents(1);
 386           cellTypes->SetNumberOfTuples(nbCells);
 387           aPtr=cellTypes->GetPointer(0);
 388         }
 389         vtkSmartPointer<vtkIdTypeArray> cellLocations(vtkSmartPointer<vtkIdTypeArray>::New());
 390         {
 391           cellLocations->SetNumberOfComponents(1);
 392           cellLocations->SetNumberOfTuples(nbCells);
 393           cPtr=cellLocations->GetPointer(0);
 394         }
 395         vtkSmartPointer<vtkIdTypeArray> cells(vtkSmartPointer<vtkIdTypeArray>::New());
 396         {
 397           MCAuto<DataArrayIdType> tmp2(mVor->computeEffectiveNbOfNodesPerCell());
 398           cells->SetNumberOfComponents(1);
 399           cells->SetNumberOfTuples(tmp2->accumulate((std::size_t)0)+nbCells);
 400           dPtr=cells->GetPointer(0);
 401         }
 402         const mcIdType *connPtr(mVor->getNodalConnectivity()->begin()),*connIPtr(mVor->getNodalConnectivityIndex()->begin());
 403         int k(0),kk(0);
 404         std::vector<vtkIdType> ee,ff;
 405         for(int i=0;i<nbCells;i++,connIPtr++)
 406           {
 407             INTERP_KERNEL::NormalizedCellType ct(static_cast<INTERP_KERNEL::NormalizedCellType>(connPtr[connIPtr[0]]));
 408             *aPtr++=(unsigned char)zeMapRev[connPtr[connIPtr[0]]];
 409             if(ct!=INTERP_KERNEL::NORM_POLYHED)
 410               {
 411                 int sz(connIPtr[1]-connIPtr[0]-1);
 412                 *dPtr++=sz;
 413                 dPtr=std::copy(connPtr+connIPtr[0]+1,connPtr+connIPtr[1],dPtr);
 414                 *cPtr++=k; k+=sz+1;
 415                 ee.push_back(kk);
 416               }
 417             else
 418               {
 419                 std::set<int> s(connPtr+connIPtr[0]+1,connPtr+connIPtr[1]); s.erase(-1);
 420                 vtkIdType nbFace((vtkIdType)(std::count(connPtr+connIPtr[0]+1,connPtr+connIPtr[1],-1)+1));
 421                 ff.push_back(nbFace);
 422                 const mcIdType *work(connPtr+connIPtr[0]+1);
 423                 for(int j=0;j<nbFace;j++)
 424                   {
 425                     const mcIdType *work2=std::find(work,connPtr+connIPtr[1],-1);
 426                     ff.push_back((vtkIdType)std::distance(work,work2));
 427                     ff.insert(ff.end(),work,work2);
 428                     work=work2+1;
 429                   }
 430                 *dPtr++=(int)s.size();
 431                 dPtr=std::copy(s.begin(),s.end(),dPtr);
 432                 *cPtr++=k; k+=(int)s.size()+1;
 433                 ee.push_back(kk); kk+=connIPtr[1]-connIPtr[0]+1;
 434               }
 435           }
 436         //
 437         vtkSmartPointer<vtkIdTypeArray> faceLocations(vtkSmartPointer<vtkIdTypeArray>::New());
 438         {
 439           faceLocations->SetNumberOfComponents(1);
 440           faceLocations->SetNumberOfTuples((vtkIdType)ee.size());
 441           std::copy(ee.begin(),ee.end(),faceLocations->GetPointer(0));
 442         }
 443         vtkSmartPointer<vtkIdTypeArray> faces(vtkSmartPointer<vtkIdTypeArray>::New());
 444         {
 445           faces->SetNumberOfComponents(1);
 446           faces->SetNumberOfTuples((vtkIdType)ff.size());
 447           std::copy(ff.begin(),ff.end(),faces->GetPointer(0));
 448         }
 449         vtkSmartPointer<vtkCellArray> cells2(vtkSmartPointer<vtkCellArray>::New());
 450         cells2->SetCells(nbCells,cells);
 451         ret->SetCells(cellTypes,cellLocations,cells2,faceLocations,faces);
 452         break;
 453       }
 454     case 2:
 455       {
 456         vtkSmartPointer<vtkUnsignedCharArray> cellTypes(vtkSmartPointer<vtkUnsignedCharArray>::New());
 457         {
 458           cellTypes->SetNumberOfComponents(1);
 459           cellTypes->SetNumberOfTuples(nbCells);
 460           unsigned char *ptr(cellTypes->GetPointer(0));
 461           std::fill(ptr,ptr+nbCells,zeMapRev[(int)INTERP_KERNEL::NORM_POLYGON]);
 462         }
 463         int *cPtr(0),*dPtr(0);
 464         vtkSmartPointer<vtkIdTypeArray> cellLocations(vtkSmartPointer<vtkIdTypeArray>::New());
 465         {
 466           cellLocations->SetNumberOfComponents(1);
 467           cellLocations->SetNumberOfTuples(nbCells);
 468           cPtr=cellLocations->GetPointer(0);
 469         }
 470         vtkSmartPointer<vtkIdTypeArray> cells(vtkSmartPointer<vtkIdTypeArray>::New());
 471         {
 472           cells->SetNumberOfComponents(1);
 473           cells->SetNumberOfTuples(mVor->getNodalConnectivity()->getNumberOfTuples());
 474           dPtr=cells->GetPointer(0);
 475         }
 476         const mcIdType *connPtr(mVor->getNodalConnectivity()->begin()),*connIPtr(mVor->getNodalConnectivityIndex()->begin());
 477         int k(0);
 478         for(int i=0;i<nbCells;i++,connIPtr++)
 479           {
 480             *dPtr++=connIPtr[1]-connIPtr[0]-1;
 481             dPtr=std::copy(connPtr+connIPtr[0]+1,connPtr+connIPtr[1],dPtr);
 482             *cPtr++=k; k+=connIPtr[1]-connIPtr[0];
 483           }
 484         vtkSmartPointer<vtkCellArray> cells2(vtkSmartPointer<vtkCellArray>::New());
 485         cells2->SetCells(nbCells,cells);
 486         ret->SetCells(cellTypes,cellLocations,cells2);
 487         break;
 488       }
 489     case 1:
 490       {
 491         vtkSmartPointer<vtkUnsignedCharArray> cellTypes(vtkSmartPointer<vtkUnsignedCharArray>::New());
 492         {
 493           cellTypes->SetNumberOfComponents(1);
 494           cellTypes->SetNumberOfTuples(nbCells);
 495           unsigned char *ptr(cellTypes->GetPointer(0));
 496           std::fill(ptr,ptr+nbCells,zeMapRev[(int)INTERP_KERNEL::NORM_SEG2]);
 497         }
 498         int *cPtr(0),*dPtr(0);
 499         vtkSmartPointer<vtkIdTypeArray> cellLocations(vtkSmartPointer<vtkIdTypeArray>::New());
 500         {
 501           cellLocations->SetNumberOfComponents(1);
 502           cellLocations->SetNumberOfTuples(nbCells);
 503           cPtr=cellLocations->GetPointer(0);
 504         }
 505         vtkSmartPointer<vtkIdTypeArray> cells(vtkSmartPointer<vtkIdTypeArray>::New());
 506         {
 507           cells->SetNumberOfComponents(1);
 508           cells->SetNumberOfTuples(mVor->getNodalConnectivity()->getNumberOfTuples());
 509           dPtr=cells->GetPointer(0);
 510         }
 511         const mcIdType *connPtr(mVor->getNodalConnectivity()->begin()),*connIPtr(mVor->getNodalConnectivityIndex()->begin());
 512         for(int i=0;i<nbCells;i++,connIPtr++)
 513           {
 514             *dPtr++=2;
 515             dPtr=std::copy(connPtr+connIPtr[0]+1,connPtr+connIPtr[1],dPtr);
 516             *cPtr++=3*i;
 517           }
 518         vtkSmartPointer<vtkCellArray> cells2(vtkSmartPointer<vtkCellArray>::New());
 519         cells2->SetCells(nbCells,cells);
 520         ret->SetCells(cellTypes,cellLocations,cells2);
 521         break;
 522       }
 523     default:
 524       throw INTERP_KERNEL::Exception("Not implemented yet !");
 525     }
 526   ret->SetPoints(points);
 527   return ret;
 528 }
 529
 530 class OffsetKeeper
 531 {
 532 public:
 533   OffsetKeeper():_vtk_arr(0) { }
 534   void pushBack(vtkDataArray *da) { _da_on.push_back(da); }
 535   void setVTKArray(vtkIdTypeArray *arr) {
 536     MCAuto<DataArrayIdType> offmc(ConvertVTKArrayToMCArrayInt(arr));
 537     _off_arr=offmc; _vtk_arr=arr; }
 538   const std::vector<vtkDataArray *>& getArrayGauss() const { return _da_on; }
 539   const DataArrayIdType *getOffsets() const { return _off_arr; }
 540   vtkIdTypeArray *getVTKOffsets() const { return _vtk_arr; }
 541 private:
 542   std::vector<vtkDataArray *> _da_on;
 543   MCAuto<DataArrayIdType> _off_arr;
 544   vtkIdTypeArray *_vtk_arr;
 545 };
 546
 547 void FillAdvInfoFrom(int vtkCT, const std::vector<double>& GaussAdvData, int nbGaussPt, int nbNodesPerCell, std::vector<double>& refCoo,std::vector<double>& posInRefCoo)
 548 {
 549   int nbOfCTS((int)GaussAdvData[0]),pos(1);
 550   for(int i=0;i<nbOfCTS;i++)
 551     {
 552       int lgth((int)GaussAdvData[pos]);
 553       int curCT((int)GaussAdvData[pos+1]),dim((int)GaussAdvData[pos+2]);
 554       if(curCT!=vtkCT)
 555         {
 556           pos+=lgth+1;
 557           continue;
 558         }
 559       int lgthExp(nbNodesPerCell*dim+nbGaussPt*dim);
 560       if(lgth!=lgthExp+2)//+2 for cell type and dimension !
 561         {
 562           std::ostringstream oss; oss << "FillAdvInfoFrom : Internal error. Unmatch with MEDReader version ? Expect size " << lgthExp << " and have " << lgth << " !";
 563           throw INTERP_KERNEL::Exception(oss.str());
 564         }
 565       refCoo.insert(refCoo.end(),GaussAdvData.begin()+pos+3,GaussAdvData.begin()+pos+3+nbNodesPerCell*dim);
 566       posInRefCoo.insert(posInRefCoo.end(),GaussAdvData.begin()+pos+3+nbNodesPerCell*dim,GaussAdvData.begin()+pos+3+nbNodesPerCell*dim+nbGaussPt*dim);
 567       //std::copy(refCoo.begin(),refCoo.end(),std::ostream_iterator<double>(std::cerr," ")); std::cerr << std::endl;
 568       //std::copy(posInRefCoo.begin(),posInRefCoo.end(),std::ostream_iterator<double>(std::cerr," ")); std::cerr << std::endl;
 569       return ;
 570     }
 571   std::ostringstream oss; oss << "FillAdvInfoFrom : Internal error ! Not found cell type " << vtkCT << " in advanced Gauss info !";
 572   throw INTERP_KERNEL::Exception(oss.str());
 573 }
 574
 575 template<class T, class U>
 576 vtkSmartPointer<T> ExtractFieldFieldArr(T *elt2, int sizeOfOutArr, int nbOfCellsOfInput, const mcIdType *offsetsPtr, const mcIdType *nbPtsPerCellPtr)
 577 {
 578   vtkSmartPointer<T> elt3(vtkSmartPointer<T>::New());
 579   int nbc(elt2->GetNumberOfComponents());
 580   elt3->SetNumberOfComponents(nbc);
 581   elt3->SetNumberOfTuples(sizeOfOutArr);
 582   for(int i=0;i<nbc;i++)
 583     {
 584       const char *name(elt2->GetComponentName(i));
 585       if(name)
 586         elt3->SetComponentName(i,name);
 587     }
 588   elt3->SetName(elt2->GetName());
 589   //
 590   U *ptr(elt3->GetPointer(0));
 591   const U *srcPtr(elt2->GetPointer(0));
 592   for(int i=0;i<nbOfCellsOfInput;i++)
 593     ptr=std::copy(srcPtr+nbc*offsetsPtr[i],srcPtr+nbc*(offsetsPtr[i]+nbPtsPerCellPtr[i]),ptr);
 594   return elt3;
 595 }
 596
 597 template<class T, class U>
 598 vtkSmartPointer<T> ExtractCellFieldArr(T *elt2, int sizeOfOutArr, int nbOfCellsOfInput, const mcIdType *idsPtr, const mcIdType *nbPtsPerCellPtr)
 599 {
 600   vtkSmartPointer<T> elt3(vtkSmartPointer<T>::New());
 601   int nbc(elt2->GetNumberOfComponents());
 602   elt3->SetNumberOfComponents(nbc);
 603   elt3->SetNumberOfTuples(sizeOfOutArr);
 604   for(int i=0;i<nbc;i++)
 605     {
 606       const char *name(elt2->GetComponentName(i));
 607       if(name)
 608         elt3->SetComponentName(i,name);
 609     }
 610   elt3->SetName(elt2->GetName());
 611   //
 612   U *ptr(elt3->GetPointer(0));
 613   const U *srcPtr(elt2->GetPointer(0));
 614   for(int i=0;i<nbOfCellsOfInput;i++)
 615     for(int j=0;j<nbPtsPerCellPtr[i];j++)
 616       ptr=std::copy(srcPtr+nbc*idsPtr[i],srcPtr+nbc*(idsPtr[i]+1),ptr);
 617   return elt3;
 618 }
 619
 620 vtkSmartPointer<vtkUnstructuredGrid> Voronize(const MEDCouplingUMesh *m, const DataArrayIdType *ids, vtkIdTypeArray *vtkOff, const DataArrayIdType *offsetsBase, const std::vector<vtkDataArray *>& arrGauss, const std::vector<double>& GaussAdvData, const std::vector<vtkDataArray *>& arrsOnCells)
 621 {
 622   if(arrGauss.empty())
 623     throw INTERP_KERNEL::Exception("Voronize : no Gauss array !");
 624   int nbTuples(arrGauss[0]->GetNumberOfTuples());
 625   for(std::vector<vtkDataArray *>::const_iterator it=arrGauss.begin();it!=arrGauss.end();it++)
 626     {
 627       if((*it)->GetNumberOfTuples()!=nbTuples)
 628         {
 629           std::ostringstream oss; oss << "Mismatch of number of tuples in Gauss arrays for array \"" << (*it)->GetName() << "\"";
 630           throw INTERP_KERNEL::Exception(oss.str());
 631         }
 632     }
 633   // Look at vtkOff has in the stomac
 634   vtkInformation *info(vtkOff->GetInformation());
 635   if(!info)
 636     throw INTERP_KERNEL::Exception("info is null ! Internal error ! Looks bad !");
 637   vtkInformationQuadratureSchemeDefinitionVectorKey *key(vtkQuadratureSchemeDefinition::DICTIONARY());
 638   if(!key->Has(info))
 639     throw INTERP_KERNEL::Exception("No quadrature key in info included in offets array ! Internal error ! Looks bad !");
 640   int dictSize(key->Size(info));
 641   INTERP_KERNEL::AutoPtr<vtkQuadratureSchemeDefinition *> dict(new vtkQuadratureSchemeDefinition *[dictSize]);
 642   key->GetRange(info,dict,0,0,dictSize);
 643   // Voronoize
 644   MCAuto<MEDCouplingFieldDouble> field(MEDCouplingFieldDouble::New(ON_GAUSS_PT));
 645   field->setMesh(m);
 646   // Gauss Part
 647   int nbOfCellsOfInput(m->getNumberOfCells());
 648   MCAuto<DataArrayIdType> nbPtsPerCellArr(DataArrayIdType::New()); nbPtsPerCellArr->alloc(nbOfCellsOfInput,1);
 649   std::map<int,int> zeMapRev(ComputeRevMapOfType()),zeMap(ComputeMapOfType());
 650   std::set<INTERP_KERNEL::NormalizedCellType> agt(m->getAllGeoTypes());
 651   for(std::set<INTERP_KERNEL::NormalizedCellType>::const_iterator it=agt.begin();it!=agt.end();it++)
 652     {
 653       const INTERP_KERNEL::CellModel& cm(INTERP_KERNEL::CellModel::GetCellModel(*it));
 654       std::map<int,int>::const_iterator it2(zeMapRev.find((int)*it));
 655       if(it2==zeMapRev.end())
 656         throw INTERP_KERNEL::Exception("Internal error ! no type conversion available !");
 657       vtkQuadratureSchemeDefinition *gaussLoc(dict[(*it2).second]);
 658       if(!gaussLoc)
 659         {
 660           std::ostringstream oss; oss << "For cell type " << cm.getRepr() << " no Gauss info !";
 661           throw INTERP_KERNEL::Exception(oss.str());
 662         }
 663       int np(gaussLoc->GetNumberOfQuadraturePoints()),nbPtsPerCell((int)cm.getNumberOfNodes());
 664       const double *sfw(gaussLoc->GetShapeFunctionWeights()),*w(gaussLoc->GetQuadratureWeights());;
 665       std::vector<double> refCoo,posInRefCoo,wCpp(w,w+np);
 666       FillAdvInfoFrom((*it2).second,GaussAdvData,np,nbPtsPerCell,refCoo,posInRefCoo);
 667       field->setGaussLocalizationOnType(*it,refCoo,posInRefCoo,wCpp);
 668       MCAuto<DataArrayIdType> ids2(m->giveCellsWithType(*it));
 669       nbPtsPerCellArr->setPartOfValuesSimple3(np,ids2->begin(),ids2->end(),0,1,1);
 670     }
 671   int zeSizeOfOutCellArr(nbPtsPerCellArr->accumulate((std::size_t)0));
 672   { MCAuto<DataArrayDouble> fakeArray(DataArrayDouble::New()); fakeArray->alloc(zeSizeOfOutCellArr,1); field->setArray(fakeArray); }
 673   field->checkConsistencyLight();
 674   MCAuto<MEDCouplingFieldDouble> vor(field->voronoize(1e-12));// The key is here !
 675   MEDCouplingUMesh *mVor(dynamic_cast<MEDCouplingUMesh *>(vor->getMesh()));
 676   //
 677   vtkSmartPointer<vtkUnstructuredGrid> ret(ConvertUMeshFromMCToVTK(mVor));
 678   // now fields...
 679   MCAuto<DataArrayIdType> myOffsets(offsetsBase->selectByTupleIdSafe(ids->begin(),ids->end()));
 680   const mcIdType *myOffsetsPtr(myOffsets->begin()),*nbPtsPerCellArrPtr(nbPtsPerCellArr->begin());
 681   for(std::vector<vtkDataArray *>::const_iterator it=arrGauss.begin();it!=arrGauss.end();it++)
 682     {
 683       vtkDataArray *elt(*it);
 684       vtkDoubleArray *elt2(vtkDoubleArray::SafeDownCast(elt));
 685       vtkIntArray *elt3(vtkIntArray::SafeDownCast(elt));
 686       vtkIdTypeArray *elt4(vtkIdTypeArray::SafeDownCast(elt));
 687       if(elt2)
 688         {
 689           vtkSmartPointer<vtkDoubleArray> arr(ExtractFieldFieldArr<vtkDoubleArray,double>(elt2,zeSizeOfOutCellArr,nbOfCellsOfInput,myOffsetsPtr,nbPtsPerCellArrPtr));
 690           ret->GetCellData()->AddArray(arr);
 691           continue;
 692         }
 693       if(elt3)
 694         {
 695           vtkSmartPointer<vtkIntArray> arr(ExtractFieldFieldArr<vtkIntArray,int>(elt3,zeSizeOfOutCellArr,nbOfCellsOfInput,myOffsetsPtr,nbPtsPerCellArrPtr));
 696           ret->GetCellData()->AddArray(arr);
 697           continue;
 698         }
 699       if(elt4)
 700         {
 701           vtkSmartPointer<vtkIdTypeArray> arr(ExtractFieldFieldArr<vtkIdTypeArray,int>(elt4,zeSizeOfOutCellArr,nbOfCellsOfInput,myOffsetsPtr,nbPtsPerCellArrPtr));
 702           ret->GetCellData()->AddArray(arr);
 703           continue;
 704         }
 705     }
 706   for(std::vector<vtkDataArray *>::const_iterator it=arrsOnCells.begin();it!=arrsOnCells.end();it++)
 707     {
 708       vtkDataArray *elt(*it);
 709       vtkDoubleArray *elt2(vtkDoubleArray::SafeDownCast(elt));
 710       vtkIntArray *elt3(vtkIntArray::SafeDownCast(elt));
 711       vtkIdTypeArray *elt4(vtkIdTypeArray::SafeDownCast(elt));
 712       if(elt2)
 713         {
 714           vtkSmartPointer<vtkDoubleArray> arr(ExtractCellFieldArr<vtkDoubleArray,double>(elt2,zeSizeOfOutCellArr,nbOfCellsOfInput,ids->begin(),nbPtsPerCellArrPtr));
 715           ret->GetCellData()->AddArray(arr);
 716           continue;
 717         }
 718       if(elt3)
 719         {
 720           vtkSmartPointer<vtkIntArray> arr(ExtractCellFieldArr<vtkIntArray,int>(elt3,zeSizeOfOutCellArr,nbOfCellsOfInput,ids->begin(),nbPtsPerCellArrPtr));
 721           ret->GetCellData()->AddArray(arr);
 722           continue;
 723         }
 724       if(elt4)
 725         {
 726           vtkSmartPointer<vtkIdTypeArray> arr(ExtractCellFieldArr<vtkIdTypeArray,int>(elt4,zeSizeOfOutCellArr,nbOfCellsOfInput,ids->begin(),nbPtsPerCellArrPtr));
 727           ret->GetCellData()->AddArray(arr);
 728           continue;
 729         }
 730     }
 731   return ret;
 732 }
 733
 734 vtkSmartPointer<vtkUnstructuredGrid> ComputeVoroGauss(vtkUnstructuredGrid *usgIn, const std::vector<double>& GaussAdvData)
 735 {
 736   OffsetKeeper zeOffsets;
 737   std::string zeArrOffset;
 738   std::vector<std::string> cellFieldNamesToDestroy;
 739   {
 740     int nArrays(usgIn->GetFieldData()->GetNumberOfArrays());
 741     for(int i=0;i<nArrays;i++)
 742       {
 743         vtkDataArray *array(usgIn->GetFieldData()->GetArray(i));
 744         if(!array)
 745           continue;
 746         const char* arrayOffsetName(array->GetInformation()->Get(vtkQuadratureSchemeDefinition::QUADRATURE_OFFSET_ARRAY_NAME()));
 747         if(!arrayOffsetName)
 748           continue;
 749         std::string arrOffsetNameCpp(arrayOffsetName);
 750         cellFieldNamesToDestroy.push_back(arrOffsetNameCpp);
 751         if(arrOffsetNameCpp.find("ELGA@")==std::string::npos)
 752           continue;
 753         if(zeArrOffset.empty())
 754           zeArrOffset=arrOffsetNameCpp;
 755         else
 756           if(zeArrOffset!=arrOffsetNameCpp)
 757             {
 758               throw INTERP_KERNEL::Exception("ComputeVoroGauss : error in QUADRATURE_OFFSET_ARRAY_NAME for Gauss fields array !");
 759             }
 760         zeOffsets.pushBack(array);
 761       }
 762     if(zeArrOffset.empty())
 763       throw INTERP_KERNEL::Exception("ComputeVoroGauss : no Gauss points fields in DataSet !");
 764   }
 765   std::vector< MCAuto<MEDCouplingUMesh> > ms;
 766   std::vector< MCAuto<DataArrayIdType> > ids;
 767   ConvertFromUnstructuredGrid(usgIn,ms,ids);
 768   {
 769     vtkDataArray *offTmp(usgIn->GetCellData()->GetArray(zeArrOffset.c_str()));
 770     if(!offTmp)
 771       {
 772         std::ostringstream oss; oss << "ComputeVoroGauss : cell field " << zeArrOffset << " not found !";
 773         throw INTERP_KERNEL::Exception(oss.str());
 774       }
 775     vtkIdTypeArray *offsets(vtkIdTypeArray::SafeDownCast(offTmp));
 776     if(!offsets)
 777       {
 778         std::ostringstream oss; oss << "ComputeVoroGauss : cell field " << zeArrOffset << " exists but not with the right type of data !";
 779         throw INTERP_KERNEL::Exception(oss.str());
 780       }
 781     ///
 782     zeOffsets.setVTKArray(offsets);
 783   }
 784   //
 785   std::vector<vtkDataArray *> arrsOnCells;
 786   {
 787     int nArrays(usgIn->GetCellData()->GetNumberOfArrays());
 788     for(int i=0;i<nArrays;i++)
 789       {
 790         vtkDataArray *array(usgIn->GetCellData()->GetArray(i));
 791         if(!array)
 792           continue;
 793         std::string name(array->GetName());
 794         if(std::find(cellFieldNamesToDestroy.begin(),cellFieldNamesToDestroy.end(),name)==cellFieldNamesToDestroy.end())
 795           {
 796             arrsOnCells.push_back(array);
 797           }
 798       }
 799     {
 800       vtkDataArray *doNotKeepThis(zeOffsets.getVTKOffsets());
 801       std::vector<vtkDataArray *>::iterator it2(std::find(arrsOnCells.begin(),arrsOnCells.end(),doNotKeepThis));
 802       if(it2!=arrsOnCells.end())
 803         arrsOnCells.erase(it2);
 804     }
 805   }
 806   //
 807   std::size_t sz(ms.size());
 808   std::vector< vtkSmartPointer<vtkUnstructuredGrid> > res;
 809   for(std::size_t i=0;i<sz;i++)
 810     {
 811       MCAuto<MEDCouplingUMesh> mmc(ms[i]);
 812       MCAuto<DataArrayIdType> myIds(ids[i]);
 813       vtkSmartPointer<vtkUnstructuredGrid> vor(Voronize(mmc,myIds,zeOffsets.getVTKOffsets(),zeOffsets.getOffsets(),zeOffsets.getArrayGauss(),GaussAdvData,arrsOnCells));
 814       res.push_back(vor);
 815     }
 816   if(res.empty())
 817     throw INTERP_KERNEL::Exception("Dataset is empty !");
 818   vtkSmartPointer<vtkMultiBlockDataGroupFilter> mb(vtkSmartPointer<vtkMultiBlockDataGroupFilter>::New());
 819   vtkSmartPointer<vtkCompositeDataToUnstructuredGridFilter> cd(vtkSmartPointer<vtkCompositeDataToUnstructuredGridFilter>::New());
 820   for(std::vector< vtkSmartPointer<vtkUnstructuredGrid> >::const_iterator it=res.begin();it!=res.end();it++)
 821     mb->AddInputData(*it);
 822   cd->SetInputConnection(mb->GetOutputPort());
 823   cd->SetMergePoints(0);
 824   cd->Update();
 825   vtkSmartPointer<vtkUnstructuredGrid> ret;
 826   ret=cd->GetOutput();
 827   return ret;
 828 }
 829
 830 ////////////////////
 831
 832 vtkVoroGauss::vtkVoroGauss()
 833 {
 834   this->SetNumberOfInputPorts(1);
 835   this->SetNumberOfOutputPorts(1);
 836 }
 837
 838 vtkVoroGauss::~vtkVoroGauss()
 839 {
 840 }
 841
 842 int vtkVoroGauss::RequestInformation(vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
 843 {
 844   //std::cerr << "########################################## vtkVoroGauss::RequestInformation ##########################################" << std::endl;
 845   try
 846     {
 847       vtkUnstructuredGrid *usgIn(0);
 848       ExtractInfo(inputVector[0],usgIn);
 849     }
 850   catch(INTERP_KERNEL::Exception& e)
 851     {
 852       std::ostringstream oss;
 853       oss << "Exception has been thrown in vtkVoroGauss::RequestInformation : " << e.what() << std::endl;
 854       if(this->HasObserver("ErrorEvent") )
 855         this->InvokeEvent("ErrorEvent",const_cast<char *>(oss.str().c_str()));
 856       else
 857         vtkOutputWindowDisplayErrorText(const_cast<char *>(oss.str().c_str()));
 858       vtkObject::BreakOnError();
 859       return 0;
 860     }
 861   return 1;
 862 }
 863
 864 int vtkVoroGauss::RequestData(vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
 865 {
 866   //std::cerr << "########################################## vtkVoroGauss::RequestData        ##########################################" << std::endl;
 867   try
 868     {
 869
 870       std::vector<double> GaussAdvData;
 871       bool isOK(IsInformationOK(inputVector[0]->GetInformationObject(0),GaussAdvData));
 872       if(!isOK)
 873         throw INTERP_KERNEL::Exception("Sorry but no advanced gauss info found ! Expect to be called right after a MEDReader containing Gauss Points !");
 874       vtkUnstructuredGrid *usgIn(0);
 875       ExtractInfo(inputVector[0],usgIn);
 876       //
 877       vtkSmartPointer<vtkUnstructuredGrid> ret(ComputeVoroGauss(usgIn,GaussAdvData));
 878       vtkInformation *inInfo(inputVector[0]->GetInformationObject(0));
 879       vtkInformation *outInfo(outputVector->GetInformationObject(0));
 880       vtkUnstructuredGrid *output(vtkUnstructuredGrid::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT())));
 881       output->ShallowCopy(ret);
 882     }
 883   catch(INTERP_KERNEL::Exception& e)
 884     {
 885       std::ostringstream oss;
 886       oss << "Exception has been thrown in vtkVoroGauss::RequestData : " << e.what() << std::endl;
 887       if(this->HasObserver("ErrorEvent") )
 888         this->InvokeEvent("ErrorEvent",const_cast<char *>(oss.str().c_str()));
 889       else
 890         vtkOutputWindowDisplayErrorText(const_cast<char *>(oss.str().c_str()));
 891       vtkObject::BreakOnError();
 892       return 0;
 893     }
 894   return 1;
 895 }
 896
 897 void vtkVoroGauss::PrintSelf(ostream& os, vtkIndent indent)
 898 {
 899   this->Superclass::PrintSelf(os, indent);
 900 }