Method RequestData

Filters/Parallel/vtkGenerateProcessIds.cxx:29–68

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
int vtkGenerateProcessIds::RequestData(vtkInformation* vtkNotUsed(request),
  vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
  // get the info objects
  vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
  vtkInformation* outInfo = outputVector->GetInformationObject(0);
  if (!inInfo || !outInfo)
  {
    return 0;
  }

  // get the input and output
  vtkDataSet* input = vtkDataSet::SafeDownCast(inInfo->Get(vtkDataObject::DATA_OBJECT()));
  vtkDataSet* output = vtkDataSet::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT()));
  if (!input || !output)
  {
    return 0;
  }

  vtkIdType piece =
    this->Controller ? static_cast<vtkIdType>(this->Controller->GetLocalProcessId()) : 0;
  output->ShallowCopy(input);

  if (this->GeneratePointData)
  {
    vtkIdType numberOfPoints = input->GetNumberOfPoints();
    auto processIds = this->GenerateProcessIds(piece, numberOfPoints);
    processIds->SetName("PointProcessIds");
    output->GetPointData()->SetProcessIds(processIds);
  }
  if (this->GenerateCellData)
  {
    vtkIdType numberOfCells = input->GetNumberOfCells();
    auto processIds = this->GenerateProcessIds(piece, numberOfCells);
    processIds->SetName("CellProcessIds");
    output->GetCellData()->SetProcessIds(processIds);
  }

  return 1;
}

//------------------------------------------------------------------------------
vtkSmartPointer<vtkConstantArray<vtkIdType>> vtkGenerateProcessIds::GenerateProcessIds(