CollapseBranchesPointerDoublingWorklet.h

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#ifndef vtk_m_filter_scalar_topology_worklet_branch_decomposition_hierarchical_volumetric_branch_decomposer_CollapseBranchesPointerDoublingWorklet_h
#define vtk_m_filter_scalar_topology_worklet_branch_decomposition_hierarchical_volumetric_branch_decomposer_CollapseBranchesPointerDoublingWorklet_h
 
#include <vtkm/filter/scalar_topology/worklet/contourtree_augmented/Types.h>
#include <vtkm/worklet/WorkletMapField.h>
 
namespace vtkm
{
namespace filter
{
namespace scalar_topology
{
namespace hierarchical_volumetric_branch_decomposer
{
 
class CollapseBranchesPointerDoublingWorklet : public vtkm::worklet::WorkletMapField
{
public:
  using ControlSignature = void(WholeArrayInOut branchRoot);
  using ExecutionSignature = void(InputIndex, _1);
  using InputDomain = _1;
 
  VTKM_EXEC_CONT
  CollapseBranchesPointerDoublingWorklet() {}
 
  template <typename InOutFieldPortalType>
  VTKM_EXEC void operator()(const vtkm::Id superarc,
                            const InOutFieldPortalType& branchRootPortal) const
  {
    vtkm::Id branchRootVal1 = branchRootPortal.Get(superarc);
    vtkm::Id branchRootVal2 = branchRootPortal.Get(branchRootPortal.Get(superarc));
    if (branchRootVal1 != branchRootVal2)
    {
      branchRootPortal.Set(superarc, branchRootVal2);
    }
  } // operator()()
 
 
}; // CollapseBranchesPointerDoublingWorklet
 
} // namespace hierarchical_volumetric_branch_decomposer
} // namespace contourtree_distributed
} // namespace worklet
} // namespace vtkm
 
#endif