VTK-m  2.0
processcontourtree/PointerDoubling.h
Go to the documentation of this file.
1 //============================================================================
2 // Copyright (c) Kitware, Inc.
3 // All rights reserved.
4 // See LICENSE.txt for details.
5 //
6 // This software is distributed WITHOUT ANY WARRANTY; without even
7 // the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
8 // PURPOSE. See the above copyright notice for more information.
9 //============================================================================
10 // Copyright (c) 2018, The Regents of the University of California, through
11 // Lawrence Berkeley National Laboratory (subject to receipt of any required approvals
12 // from the U.S. Dept. of Energy). All rights reserved.
13 //
14 // Redistribution and use in source and binary forms, with or without modification,
15 // are permitted provided that the following conditions are met:
16 //
17 // (1) Redistributions of source code must retain the above copyright notice, this
18 // list of conditions and the following disclaimer.
19 //
20 // (2) Redistributions in binary form must reproduce the above copyright notice,
21 // this list of conditions and the following disclaimer in the documentation
22 // and/or other materials provided with the distribution.
23 //
24 // (3) Neither the name of the University of California, Lawrence Berkeley National
25 // Laboratory, U.S. Dept. of Energy nor the names of its contributors may be
26 // used to endorse or promote products derived from this software without
27 // specific prior written permission.
28 //
29 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
30 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
31 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
32 // IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
33 // INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
34 // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
36 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
37 // OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
38 // OF THE POSSIBILITY OF SUCH DAMAGE.
39 //
40 //=============================================================================
41 //
42 // This code is an extension of the algorithm presented in the paper:
43 // Parallel Peak Pruning for Scalable SMP Contour Tree Computation.
44 // Hamish Carr, Gunther Weber, Christopher Sewell, and James Ahrens.
45 // Proceedings of the IEEE Symposium on Large Data Analysis and Visualization
46 // (LDAV), October 2016, Baltimore, Maryland.
47 //
48 // The PPP2 algorithm and software were jointly developed by
49 // Hamish Carr (University of Leeds), Gunther H. Weber (LBNL), and
50 // Oliver Ruebel (LBNL)
51 //==============================================================================
52 
53 #ifndef vtk_m_worklet_contourtree_augmented_process_contourtree_inc_pointer_doubling_h
54 #define vtk_m_worklet_contourtree_augmented_process_contourtree_inc_pointer_doubling_h
55 
58 
59 /*
60  *
61 * This code is written by Petar Hristov in 03.2020
62 *
63 * It does pointer doubling on an array.
64 *
65 *
66 */
67 namespace vtkm
68 {
69 namespace worklet
70 {
71 namespace contourtree_augmented
72 {
73 namespace process_contourtree_inc
74 {
76 {
77 public:
78  typedef void ControlSignature(WholeArrayInOut whichBranch);
79 
80  typedef void ExecutionSignature(InputIndex, _1);
81  using InputDomain = _1;
82 
84 
85  // Default Constructor
87  : NumSupernodes(_NumSupernodes)
88  {
89  }
90 
91  template <typename WhichBranchArrayPortalType>
92  VTKM_EXEC void operator()(const vtkm::Id supernode,
93  const WhichBranchArrayPortalType& whichBranchPortal) const
94  {
95  if (!IsTerminalElement(whichBranchPortal.Get(supernode)))
96  {
97  const auto currentValue =
98  MaskedIndex(whichBranchPortal.Get(MaskedIndex(whichBranchPortal.Get(supernode))));
99  whichBranchPortal.Set(supernode, currentValue);
100  }
101  }
102 }; // ComputeMinMaxValues
103 } // process_contourtree_inc
104 } // namespace contourtree_augmented
105 } // namespace worklet
106 } // namespace vtkm
107 
108 
109 #endif
VTKM_EXEC
#define VTKM_EXEC
Definition: ExportMacros.h:51
vtkm::worklet::contourtree_augmented::IsTerminalElement
VTKM_EXEC_CONT bool IsTerminalElement(vtkm::Id flaggedIndex)
Definition: filter/scalar_topology/worklet/contourtree_augmented/Types.h:103
vtkm
Groups connected points that have the same field value.
Definition: Atomic.h:19
WorkletMapField.h
VTKM_EXEC_CONT
#define VTKM_EXEC_CONT
Definition: ExportMacros.h:52
vtkm::worklet::contourtree_augmented::process_contourtree_inc::PointerDoubling::InputDomain
_1 InputDomain
Definition: processcontourtree/PointerDoubling.h:81
vtkm::worklet::contourtree_augmented::process_contourtree_inc::PointerDoubling::operator()
VTKM_EXEC void operator()(const vtkm::Id supernode, const WhichBranchArrayPortalType &whichBranchPortal) const
Definition: processcontourtree/PointerDoubling.h:92
vtkm::worklet::contourtree_augmented::process_contourtree_inc::PointerDoubling::PointerDoubling
VTKM_EXEC_CONT PointerDoubling(vtkm::Id _NumSupernodes)
Definition: processcontourtree/PointerDoubling.h:86
vtkm::worklet::contourtree_augmented::MaskedIndex
VTKM_EXEC_CONT vtkm::Id MaskedIndex(vtkm::Id flaggedIndex)
Definition: filter/scalar_topology/worklet/contourtree_augmented/Types.h:127
vtkm::Id
vtkm::Int32 Id
Represents an ID (index into arrays).
Definition: Types.h:191
vtkm::worklet::contourtree_augmented::process_contourtree_inc::PointerDoubling::ControlSignature
void ControlSignature(WholeArrayInOut whichBranch)
Definition: processcontourtree/PointerDoubling.h:78
vtkm::worklet::contourtree_augmented::process_contourtree_inc::PointerDoubling
Definition: processcontourtree/PointerDoubling.h:75
vtkm::worklet::contourtree_augmented::process_contourtree_inc::PointerDoubling::ExecutionSignature
void ExecutionSignature(InputIndex, _1)
Definition: processcontourtree/PointerDoubling.h:80
Types.h
vtkm::worklet::contourtree_augmented::process_contourtree_inc::PointerDoubling::NumSupernodes
vtkm::Id NumSupernodes
Definition: processcontourtree/PointerDoubling.h:83
vtkm::exec::arg::InputIndex
The ExecutionSignature tag to use to get the input index.
Definition: InputIndex.h:42
vtkm::worklet::WorkletMapField
Base class for worklets that do a simple mapping of field arrays.
Definition: WorkletMapField.h:38