Method AssignGlobalElementIds

Filters/ParallelGeometry/vtkPDistributedDataFilter.cxx:3187–3220

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//------------------------------------------------------------------------------
int vtkPDistributedDataFilter::AssignGlobalElementIds(vtkDataSet* in)
{
  TimeLog timer("AssignGlobalElementIds", this->Timing);
  (void)timer;

  vtkIdType i;
  vtkIdType myNumCells = in->GetNumberOfCells();
  vtkIdTypeArray* numCells = this->ExchangeCounts(myNumCells, 0x0017);

  vtkIdTypeArray* globalCellIds = vtkIdTypeArray::New();
  globalCellIds->SetNumberOfValues(myNumCells);
  // DDM - do we need to mark this as the GID array?
  globalCellIds->SetName(TEMP_ELEMENT_ID_NAME);

  vtkIdType StartId = 0;

  for (i = 0; i < this->MyId; i++)
  {
    StartId += numCells->GetValue(i);
  }

  numCells->Delete();

  for (i = 0; i < myNumCells; i++)
  {
    globalCellIds->SetValue(i, StartId++);
  }

  in->GetCellData()->SetGlobalIds(globalCellIds);

  globalCellIds->Delete();

  return 0;
}

//========================================================================
// Code related to acquiring ghost cells