Method RequestData

Filters/Extraction/vtkConvertSelection.cxx:1016–1049

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//------------------------------------------------------------------------------
int vtkConvertSelection::RequestData(vtkInformation* vtkNotUsed(request),
  vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
  vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
  vtkSelection* origInput = vtkSelection::SafeDownCast(inInfo->Get(vtkDataObject::DATA_OBJECT()));

  if (!this->SelectionExtractor)
  {
    vtkNew<vtkExtractSelection> se;
    this->SetSelectionExtractor(se);
  }

  vtkNew<vtkSelection> input;
  input->ShallowCopy(origInput);
  if (this->InputFieldType != -1)
  {
    for (unsigned int i = 0; i < input->GetNumberOfNodes(); ++i)
    {
      input->GetNode(i)->SetFieldType(this->InputFieldType);
    }
  }

  vtkInformation* dataInfo = inputVector[1]->GetInformationObject(0);
  vtkDataObject* data = dataInfo->Get(vtkDataObject::DATA_OBJECT());

  vtkInformation* outInfo = outputVector->GetInformationObject(0);
  vtkSelection* output = vtkSelection::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT()));
  if (data && data->IsA("vtkCompositeDataSet"))
  {
    return this->ConvertCompositeDataSet(input, vtkCompositeDataSet::SafeDownCast(data), output);
  }

  return this->Convert(input, data, output);
}

//------------------------------------------------------------------------------
void vtkConvertSelection::SetDataObjectConnection(vtkAlgorithmOutput* in)