Function EnsureComposite

Rendering/HyperTreeGrid/vtkHyperTreeGridMapper.cxx:25–39

namespace
{
vtkSmartPointer<vtkCompositeDataSet> EnsureComposite(vtkDataObject* dobj)
{
  if (auto cds = vtkCompositeDataSet::SafeDownCast(dobj))
  {
    return cds;
  }
  vtkNew<vtkGroupDataSetsFilter> toComposite;
  toComposite->SetInputDataObject(dobj);
  toComposite->SetOutputTypeToMultiBlockDataSet();
  toComposite->Update();
  auto outCds = vtkCompositeDataSet::SafeDownCast(toComposite->GetOutputDataObject(0));
  auto cds = vtkSmartPointer<vtkCompositeDataSet>::Take(outCds->NewInstance());
  cds->CompositeShallowCopy(outCds);
  return cds;
}
}

vtkObjectFactoryNewMacro(vtkHyperTreeGridMapper);