Method ProcessTrees

Filters/HyperTree/vtkHyperTreeGridDepthLimiter.cxx:69–142

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//------------------------------------------------------------------------------
int vtkHyperTreeGridDepthLimiter::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;
  }

  if (this->JustCreateNewMask)
  {
    output->ShallowCopy(input);
    output->SetDepthLimiter(this->Depth);
    return 1;
  }

  // Retrieve material mask
  this->InMask = input->HasMask() ? input->GetMask() : nullptr;

  // Set grid parameters
  output->SetDimensions(input->GetDimensions());
  output->SetTransposedRootIndexing(input->GetTransposedRootIndexing());
  output->SetBranchFactor(input->GetBranchFactor());
  output->CopyCoordinates(input);
  output->SetHasInterface(input->GetHasInterface());
  output->SetInterfaceNormalsName(input->GetInterfaceNormalsName());
  output->SetInterfaceInterceptsName(input->GetInterfaceInterceptsName());

  // Initialize output point data
  this->InData = input->GetCellData();
  this->OutData = output->GetCellData();
  this->OutData->CopyAllocate(this->InData);

  // Create material mask bit array if one is present on input
  if (!this->OutMask && input->HasMask())
  {
    this->OutMask = vtkBitArray::New();
  }

  // Output indices begin at 0
  this->CurrentId = 0;

  // Iterate over all input and output hyper trees
  vtkIdType inIndex;
  vtkHyperTreeGrid::vtkHyperTreeGridIterator it;
  input->InitializeTreeIterator(it);
  vtkNew<vtkHyperTreeGridNonOrientedCursor> inCursor;
  vtkNew<vtkHyperTreeGridNonOrientedCursor> outCursor;
  while (it.GetNextTree(inIndex))
  {
    if (this->CheckAbort())
    {
      break;
    }
    // Initialize new grid cursor at root of current input tree
    input->InitializeNonOrientedCursor(inCursor, inIndex);