Method ProcessTrees

Filters/HyperTree/vtkHyperTreeGridRemoveGhostCells.cxx:71–123

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

  output->ShallowCopy(input);

  // Retrieve ghost array
  if (!input->HasAnyGhostCells())
  {
    vtkWarningMacro(<< "Input does not have a ghost array. Filter will do nothing.");
    output->SetMask(input->GetMask());
    return 1;
  }

  // Retrieve and copy input mask if it exists
  vtkNew<vtkBitArray> outMask;
  if (input->HasMask())
  {
    outMask->DeepCopy(input->GetMask());
  }
  else
  {
    outMask->SetNumberOfTuples(output->GetNumberOfCells());
  }
  output->SetMask(outMask);

  // Iterate over output HTG and mask ghost cells
  vtkIdType inIndex = 0;
  vtkHyperTreeGrid::vtkHyperTreeGridIterator it;
  output->InitializeTreeIterator(it);
  vtkNew<vtkHyperTreeGridNonOrientedCursor> outCursor;
  while (it.GetNextTree(inIndex))
  {
    if (this->CheckAbort())
    {
      break;
    }

    output->InitializeNonOrientedCursor(outCursor, inIndex, true);
    ::RecursivelyMaskGhost(outCursor, input->GetMask(), input->GetGhostCells());
  }

  // Remove ghost cells array
  output->GetCellData()->RemoveArray(input->GetGhostCells()->GetName());

  return 1;
}
VTK_ABI_NAMESPACE_END