Method GetTree

Common/DataModel/vtkHyperTreeGrid.cxx:1013–1043

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//------------------------------------------------------------------------------
vtkHyperTree* vtkHyperTreeGrid::GetTree(vtkIdType index, bool create)
{
  assert("pre: not_tree" && index < this->GetMaxNumberOfTrees());

  // Wrap convenience macro for outside use
  vtkHyperTree* tree = GetHyperTreeFromThisMacro(index);

  // Create a new cursor if only required to do so
  if (create && !tree)
  {
    tree = vtkHyperTree::New();
    if (!tree->Initialize(this->BranchFactor, this->Dimension))
    {
      vtkGenericWarningMacro("Failed to create hyper tree.");
      return nullptr;
    }
    tree->SetTreeIndex(index);
    this->HyperTrees[index] = tree;
    tree->Delete();

    if (!tree->HasScales())
    {
      double origin[3];
      double scale[3];
      this->GetLevelZeroOriginAndSizeFromIndex(tree->GetTreeIndex(), origin, scale);
      tree->SetScales(std::make_shared<vtkHyperTreeGridScales>(this->BranchFactor, scale));
    }
  }

  return tree;
}

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void vtkHyperTreeGrid::SetTree(vtkIdType index, vtkHyperTree* tree)