AugmentBoundaryWithNecessaryInteriorSupernodesAppendNecessarySupernodesWorklet.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_distributed_bract_maker_augment_boundary_with_necessary_interior_supernodes_append_necessary_supernodes_worklet_h
#define vtk_m_worklet_contourtree_distributed_bract_maker_augment_boundary_with_necessary_interior_supernodes_append_necessary_supernodes_worklet_h
 
#include <vtkm/filter/scalar_topology/worklet/contourtree_augmented/Types.h>
#include <vtkm/worklet/WorkletMapField.h>
 
namespace vtkm
{
namespace worklet
{
namespace contourtree_distributed
{
namespace bract_maker
{
 
class AugmentBoundaryWithNecessaryInteriorSupernodesAppendNecessarySupernodesWorklet
  : public vtkm::worklet::WorkletMapField
{
public:
  using ControlSignature = void(FieldIn supernodes,               // input
                                FieldIn isNecessaryAndInterior,   // input
                                FieldIn boundaryNecessaryId,      // input
                                WholeArrayIn meshSortOrder,       // input
                                WholeArrayOut boundaryIndices,    //output
                                WholeArrayOut bractVertexSuperset // output
  );
  using ExecutionSignature = void(_1, _2, _3, _4, _5, _6);
  using InputDomain = _1;
 
  // Default Constructor
  VTKM_EXEC_CONT
  AugmentBoundaryWithNecessaryInteriorSupernodesAppendNecessarySupernodesWorklet(
    vtkm::Id numBoundary)
    : NumBoundary(numBoundary)
  {
  }
 
  template <typename InFieldPortalType, typename OutFieldPortalType>
  VTKM_EXEC void operator()(const vtkm::Id& supernode,
                            const bool& isNecessaryAndInterior,
                            const vtkm::Id boundaryNecessaryId,
                            const InFieldPortalType meshSortOrderPortal,
                            const OutFieldPortalType& boundaryIndicesPortal,
                            const OutFieldPortalType& bractVertexSupersetPortal) const
  {
    // per supernode
    if (isNecessaryAndInterior)
    { // if necessary
      vtkm::Id sortIndex = vtkm::worklet::contourtree_augmented::MaskedIndex(supernode);
      // add to last index in old boundary to find where to put it
      vtkm::Id wherePut = this->NumBoundary - 1 + boundaryNecessaryId;
      boundaryIndicesPortal.Set(wherePut, sortIndex);
      bractVertexSupersetPortal.Set(wherePut, meshSortOrderPortal.Get(sortIndex));
    } // if necessary
 
    // In serial this worklet implements the following operation
    /*
    for (indexType supernode = 0; supernode < contourTree->supernodes.size(); supernode++)
    { // per supernode
      if (isNecessaryAndInterior[supernode])
        { // if necessary
        indexType sortIndex = maskedIndex(contourTree->supernodes[supernode]);
        // add to last index in old boundary to find where to put it
        indexType wherePut = nBoundary - 1 + boundaryNecessaryID[supernode];
        boundaryIndices[wherePut] = sortIndex;
        bractVertexSuperset[wherePut] = mesh->SortOrder(sortIndex);
        } // if necessary
    } // per supernode
    */
  }
 
private:
  vtkm::Id NumBoundary;
 
}; // AugmentBoundaryWithNecessaryInteriorSupernodesAppendNecessarySupernodesWorklet
 
 
} // namespace bract_maker
} // namespace contourtree_distributed
} // namespace worklet
} // namespace vtkm
 
#endif