HyperSweepBlock.h

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//============================================================================
//  Copyright (c) Kitware, Inc.
//  All rights reserved.
//  See LICENSE.txt for details.
//
//  This software is distributed WITHOUT ANY WARRANTY; without even
//  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
//  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.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// (1) Redistributions of source code must retain the above copyright notice, this
//     list of conditions and the following disclaimer.
//
// (2) Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//
// (3) Neither the name of the University of California, Lawrence Berkeley National
//     Laboratory, U.S. Dept. of Energy nor the names of its contributors may be
//     used to endorse or promote products derived from this software without
//     specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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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_hypersweepblock_h
#define vtk_m_worklet_contourtree_distributed_hypersweepblock_h
 
#include <vtkm/Types.h>
#include <vtkm/cont/ArrayHandle.h>
#include <vtkm/filter/scalar_topology/worklet/contourtree_distributed/HierarchicalContourTree.h>
 
namespace vtkm
{
namespace worklet
{
namespace contourtree_distributed
{
 
template <typename ContourTreeDataFieldType>
struct HyperSweepBlock
{
  HyperSweepBlock(
    const vtkm::Id localBlockNo,
    const int globalBlockId,
    const vtkm::Id3& origin,
    const vtkm::Id3& size,
    const vtkm::Id3& globalSize,
    const vtkm::worklet::contourtree_distributed::HierarchicalContourTree<ContourTreeDataFieldType>&
      hierarchicalContourTree)
    : LocalBlockNo(localBlockNo)
    , GlobalBlockId(globalBlockId)
    , Origin(origin)
    , Size(size)
    , GlobalSize(globalSize)
    , HierarchicalContourTree(hierarchicalContourTree)
  {
  }
 
  // Mesh information
  vtkm::Id LocalBlockNo;
  int GlobalBlockId;
  vtkm::Id3 Origin;
  vtkm::Id3 Size;
  vtkm::Id3 GlobalSize;
 
  // Hierarchical contour tree for this block
  const vtkm::worklet::contourtree_distributed::HierarchicalContourTree<ContourTreeDataFieldType>&
    HierarchicalContourTree;
 
  // Computed values
  vtkm::cont::ArrayHandle<vtkm::Id> IntrinsicVolume;
  vtkm::cont::ArrayHandle<vtkm::Id> DependentVolume;
 
  // Destroy function allowing DIY to own blocks and clean them up after use
  static void Destroy(void* b)
  {
    delete static_cast<HyperSweepBlock<ContourTreeDataFieldType>*>(b);
  }
};
 
} // namespace contourtree_distributed
} // namespace worklet
} // namespace vtkm
 
#endif