vtk-m2/vtkm/worklet/contourtree_distributed/tree_grafter/InitActiceSuperarcIdWorklet.h
2020-12-02 14:29:11 -08:00

120 lines
5.2 KiB
C++

//============================================================================
// 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
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// 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,
// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
// OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
// OF THE POSSIBILITY OF SUCH DAMAGE.
//
//=============================================================================
//
// 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_tree_grafter_init_active_superarc_id_worklet_h
#define vtk_m_worklet_contourtree_distributed_tree_grafter_init_active_superarc_id_worklet_h
#include <vtkm/worklet/WorkletMapField.h>
#include <vtkm/worklet/contourtree_augmented/Types.h>
namespace vtkm
{
namespace worklet
{
namespace contourtree_distributed
{
namespace tree_grafter
{
// In TreeGrafter.InitializeActiveSuperarcs set the temporary variable activeSuperarcId
class InitActiceSuperarcIdWorklet : public vtkm::worklet::WorkletMapField
{
public:
using ControlSignature = void(
FieldIn
superarcIndex, // input iteration index. loop to one less than ContourTree->Supernodes.GetNumberOfValues()
WholeArrayIn contourtreeSuperarcs, // input
WholeArrayIn interiorForestIsNecessary, // input
FieldOut activeSuperarcId // output
);
using ExecutionSignature = _4(_1, _2, _3);
using InputDomain = _1;
// Default Constructor
VTKM_EXEC_CONT
InitActiceSuperarcIdWorklet() {}
template <typename InFieldPortalType>
VTKM_EXEC vtkm::Id operator()(const vtkm::Id& superarcIndex,
const InFieldPortalType& contourtreeSuperarcPortal,
const InFieldPortalType& isNecessaryPortal) const
{ // operator ()
// retrieve the target
vtkm::Id superarcTo = vtkm::worklet::contourtree_augmented::MaskedIndex(
contourtreeSuperarcPortal.Get(superarcIndex));
// now set the flag for which ones are needed
return (!isNecessaryPortal.Get(superarcIndex) || !isNecessaryPortal.Get(superarcTo));
// In serial this worklet implements the following operation
/*
// loop to one less, i.e. excluding null superarc from root
for (indexType superarc = 0; superarc < contourTree->supernodes.size() - 1; superarc++)
{ // per superarc
// retrieve the target
indexType superarcTo = maskedIndex(contourTree->superarcs[superarc]);
// now set the flag for which ones are needed
activeSuperarcID[superarc] = !residue->isNecessary[superarc] || !residue->isNecessary[superarcTo];
} // per superarc
*/
} // operator ()
}; // BoundaryVerticiesPerSuperArcStepOneWorklet
} // namespace tree_grafter
} // namespace contourtree_distributed
} // namespace worklet
} // namespace vtkm
#endif