GetOwnedVerticesByGlobalIdWorklet.h

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//  PURPOSE.  See the above copyright notice for more information.
//============================================================================
// Copyright (c) 2018, The Regents of the University of California, through
// Lawrence Berkeley National Laboratory (subject to receipt of any required approvals
// from the U.S. Dept. of Energy).  All rights reserved.
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//=============================================================================
//
//  This code is an extension of the algorithm presented in the paper:
//  Parallel Peak Pruning for Scalable SMP Contour Tree Computation.
//  Hamish Carr, Gunther Weber, Christopher Sewell, and James Ahrens.
//  Proceedings of the IEEE Symposium on Large Data Analysis and Visualization
//  (LDAV), October 2016, Baltimore, Maryland.
//
//  The PPP2 algorithm and software were jointly developed by
//  Hamish Carr (University of Leeds), Gunther H. Weber (LBNL), and
//  Oliver Ruebel (LBNL)
//==============================================================================
 
#ifndef vtk_m_worklet_contourtree_augmented_mesh_dem_get_owned_vertices_by_global_id_worklet_h
#define vtk_m_worklet_contourtree_augmented_mesh_dem_get_owned_vertices_by_global_id_worklet_h
 
#include <vtkm/filter/scalar_topology/worklet/contourtree_augmented/data_set_mesh/IdRelabeler.h>
#include <vtkm/worklet/WorkletMapField.h>
 
namespace vtkm
{
namespace worklet
{
namespace contourtree_augmented
{
namespace data_set_mesh
{
 
// Worklet for computing the sort indices from the sort order
class GetOwnedVerticesByGlobalIdWorklet : public vtkm::worklet::WorkletMapField
{
public:
  using ControlSignature = void(FieldIn meshIndices,      // (input) index into active vertices
                                ExecObject meshStructure, // (input) mesh structure execution object
                                FieldOut ownedVertices    // (output) vertices owned by the mesh
  );
  using ExecutionSignature = _3(_1, _2);
  using InputDomain = _1;
 
  // Constructor
  VTKM_EXEC_CONT
  GetOwnedVerticesByGlobalIdWorklet(
    const vtkm::worklet::contourtree_augmented::mesh_dem::IdRelabeler& localToGlobalIdRelabeler)
    : LocalToGlobalIdRelabeler(localToGlobalIdRelabeler)
  {
  }
 
  template <typename MeshStructureType>
  VTKM_EXEC vtkm::Id operator()(const vtkm::Id meshIndex,
                                const MeshStructureType& meshStructure) const
  {
    return meshStructure.GetVertexOwned(meshIndex, this->LocalToGlobalIdRelabeler);
  }
 
private:
  const vtkm::worklet::contourtree_augmented::mesh_dem::IdRelabeler LocalToGlobalIdRelabeler;
}; // Mesh2D_DEM_VertexStarter
 
} // namespace data_set_mesh
} // namespace contourtree_augmented
} // namespace worklet
} // namespace vtkm
 
#endif