Method ProcessTrees

Filters/HyperTree/vtkHyperTreeGridGeometry.cxx:43–106

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

//------------------------------------------------------------------------------
int vtkHyperTreeGridGeometry::ProcessTrees(vtkHyperTreeGrid* input, vtkDataObject* outputDO)
{
  // Downcast output data object to polygonal data set
  vtkPolyData* output = vtkPolyData::SafeDownCast(outputDO);
  if (!output)
  {
    vtkErrorMacro("Incorrect type of output: " << outputDO->GetClassName());
    return 0;
  }

  // Retrieve useful grid parameters for speed of access
  unsigned int dimension = input->GetDimension();

  // Initialize output cell data
  this->InData = input->GetCellData();
  this->OutData = output->GetCellData();
  this->OutData->CopyAllOn(); // Should be set before CopyAllocate to be taken into account
  this->OutData->CopyAllocate(this->InData);

  vtkNew<vtkPoints> outPoints;
  vtkNew<vtkCellArray> outCells;

  std::unique_ptr<vtkHyperTreeGridGeometryImpl> implementation;

  // Create a custom internal class depending on the dimension of the input HTG.
  switch (dimension)
  {
    case 1:
      implementation = std::unique_ptr<vtkHyperTreeGridGeometry1DImpl>(
        new vtkHyperTreeGridGeometry1DImpl(input, outPoints, outCells, this->InData, this->OutData,
          this->PassThroughCellIds, this->OriginalCellIdArrayName, this->FillMaterial));
      break;
    case 2:
      implementation = std::unique_ptr<vtkHyperTreeGridGeometry2DImpl>(
        new vtkHyperTreeGridGeometry2DImpl(input, outPoints, outCells, this->InData, this->OutData,
          this->PassThroughCellIds, this->OriginalCellIdArrayName, this->FillMaterial));
      break;
    case 3:
      implementation =
        std::unique_ptr<vtkHyperTreeGridGeometry3DImpl>(new vtkHyperTreeGridGeometry3DImpl(
          this->Merging, input, outPoints, outCells, this->InData, this->OutData,
          this->PassThroughCellIds, this->OriginalCellIdArrayName, this->FillMaterial));
      break;
    default:
      vtkErrorMacro("Incorrect dimension of input: " << dimension);
      return 0;
  } // switch ( dimension )

  // Execute
  implementation->GenerateGeometry();

  // Set output geometry and topology
  output->SetPoints(outPoints);
  if (dimension == 1 || !this->FillMaterial)
  {
    output->SetLines(outCells);
  }
  else