Method RequestData

Common/ExecutionModel/vtkHyperTreeGridAlgorithm.cxx:239–280

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//------------------------------------------------------------------------------
int vtkHyperTreeGridAlgorithm::RequestData(vtkInformation* vtkNotUsed(request),
  vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
  // Update progress
  this->UpdateProgress(0.);

  // Retrieve input and output
  vtkHyperTreeGrid* input = vtkHyperTreeGrid::GetData(inputVector[0], 0);
  if (!input)
  {
    vtkErrorMacro("No input available. Cannot proceed with hyper tree grid algorithm.");
    return 0;
  }
  vtkDataObject* outputDO = vtkDataObject::GetData(outputVector, 0);
  if (!outputDO)
  {
    vtkErrorMacro("No output available. Cannot proceed with hyper tree grid algorithm.");
    return 0;
  }

  this->OutData = nullptr;

  // Process all trees in input grid and generate input data object
  // only if extents are correct
  if ((input->GetExtent()[0] <= input->GetExtent()[1] ||
        input->GetExtent()[2] <= input->GetExtent()[3] ||
        input->GetExtent()[4] <= input->GetExtent()[5]) &&
    !this->ProcessTrees(input, outputDO))
  {
    return 0;
  }

  // Squeeze output data if present
  if (this->OutData)
  {
    this->OutData->Squeeze();
  }

  // Update progress and return
  this->UpdateProgress(1.);
  return 1;
}

//------------------------------------------------------------------------------
void vtkHyperTreeGridAlgorithm::SetInputData(vtkDataObject* input)