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//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//
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// Copyright 2015 Sandia Corporation.
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// Copyright 2015 UT-Battelle, LLC.
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// Copyright 2015 Los Alamos National Security.
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#ifndef vtk_m_cont_CellSetPermutation_h
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#define vtk_m_cont_CellSetPermutation_h
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#include <vtkm/CellShape.h>
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#include <vtkm/CellTraits.h>
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#include <vtkm/cont/ArrayHandlePermutation.h>
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#include <vtkm/cont/CellSet.h>
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#include <vtkm/exec/ConnectivityPermuted.h>
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namespace vtkm
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{
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namespace cont
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{
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template <typename OriginalCellSet, typename ValidCellArrayHandleType>
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class CellSetPermutation;
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namespace internal
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{
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template <typename OriginalCellSet, typename PermutationArrayHandleType>
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class CellSetGeneralPermutation : public CellSet
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{
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public:
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VTKM_CONT
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CellSetGeneralPermutation(const PermutationArrayHandleType& validCellIds,
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const OriginalCellSet& cellset,
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const std::string& name)
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: CellSet(name)
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, ValidCellIds(validCellIds)
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, FullCellSet(cellset)
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{
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}
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VTKM_CONT
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CellSetGeneralPermutation(const std::string& name)
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: CellSet(name)
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, ValidCellIds()
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, FullCellSet()
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{
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}
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VTKM_CONT
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vtkm::Id GetNumberOfCells() const VTKM_OVERRIDE { return this->ValidCellIds.GetNumberOfValues(); }
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VTKM_CONT
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vtkm::Id GetNumberOfPoints() const VTKM_OVERRIDE { return this->FullCellSet.GetNumberOfPoints(); }
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vtkm::Id GetNumberOfFaces() const VTKM_OVERRIDE { return -1; }
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vtkm::Id GetNumberOfEdges() const VTKM_OVERRIDE { return -1; }
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//This is the way you can fill the memory from another system without copying
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VTKM_CONT
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void Fill(const PermutationArrayHandleType& validCellIds, const OriginalCellSet& cellset)
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{
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ValidCellIds = validCellIds;
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FullCellSet = cellset;
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}
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template <typename TopologyElement>
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VTKM_CONT vtkm::Id GetSchedulingRange(TopologyElement) const
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{
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VTKM_IS_TOPOLOGY_ELEMENT_TAG(TopologyElement);
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return this->ValidCellIds.GetNumberOfValues();
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}
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template <typename Device, typename FromTopology, typename ToTopology>
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struct ExecutionTypes
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{
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VTKM_IS_DEVICE_ADAPTER_TAG(Device);
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VTKM_IS_TOPOLOGY_ELEMENT_TAG(FromTopology);
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VTKM_IS_TOPOLOGY_ELEMENT_TAG(ToTopology);
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typedef typename PermutationArrayHandleType::template ExecutionTypes<Device>::PortalConst
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ExecPortalType;
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typedef typename OriginalCellSet::template ExecutionTypes<Device, FromTopology, ToTopology>::
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ExecObjectType OrigExecObjectType;
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typedef vtkm::exec::ConnectivityPermuted<ExecPortalType, OrigExecObjectType> ExecObjectType;
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};
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template <typename Device, typename FromTopology, typename ToTopology>
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typename ExecutionTypes<Device, FromTopology, ToTopology>::ExecObjectType
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PrepareForInput(Device, FromTopology, ToTopology) const
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{
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// Developer's note: I looked into supporting cell to point connectivity in a permutation cell
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// set and found it to be complex. It is not straightforward to implement this on top of the
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// original cell set's cell to point because points could be attached to cells that do not
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// exist in the permuted topology. Ultimately, you will probably have to rebuild these
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// connections in a way very similar to how CellSetExplicit already does it. In fact, the
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// easiest implementation will probably be to just convert to a CellSetExplicit and use that.
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// In fact, it may be possible to change this whole implementation to just be a subclass of
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// CellSetExplicit with some fancy arrays for its point to cell arrays.
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throw vtkm::cont::ErrorBadType(
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"CellSetPermutation currently only supports point to cell connectivity. "
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"To support other connectivity, convert to an explicit grid with the CellDeepCopy "
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"worklet or the CleanGrid filter.");
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}
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template <typename Device>
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typename ExecutionTypes<Device,
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vtkm::TopologyElementTagPoint,
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vtkm::TopologyElementTagCell>::ExecObjectType
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PrepareForInput(Device d, vtkm::TopologyElementTagPoint f, vtkm::TopologyElementTagCell t) const
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{
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using FromTopology = vtkm::TopologyElementTagPoint;
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using ToTopology = vtkm::TopologyElementTagCell;
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using ConnectivityType =
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typename ExecutionTypes<Device, FromTopology, ToTopology>::ExecObjectType;
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return ConnectivityType(this->ValidCellIds.PrepareForInput(d),
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this->FullCellSet.PrepareForInput(d, f, t));
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}
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void PrintSummary(std::ostream& out) const VTKM_OVERRIDE
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{
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out << " CellSetGeneralPermutation of: " << std::endl;
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this->FullCellSet.PrintSummary(out);
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}
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private:
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PermutationArrayHandleType ValidCellIds;
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OriginalCellSet FullCellSet;
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};
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} //namespace internal
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#ifndef VTKM_DEFAULT_CELLSET_PERMUTATION_STORAGE_TAG
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#define VTKM_DEFAULT_CELLSET_PERMUTATION_STORAGE_TAG VTKM_DEFAULT_STORAGE_TAG
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#endif
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template <typename OriginalCellSet,
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typename PermutationArrayHandleType =
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vtkm::cont::ArrayHandle<vtkm::Id, VTKM_DEFAULT_CELLSET_PERMUTATION_STORAGE_TAG>>
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class CellSetPermutation
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: public vtkm::cont::internal::CellSetGeneralPermutation<OriginalCellSet,
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PermutationArrayHandleType>
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{
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VTKM_IS_CELL_SET(OriginalCellSet);
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VTKM_IS_ARRAY_HANDLE(PermutationArrayHandleType);
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typedef typename vtkm::cont::internal::CellSetGeneralPermutation<OriginalCellSet,
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PermutationArrayHandleType>
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ParentType;
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public:
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VTKM_CONT
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CellSetPermutation(const PermutationArrayHandleType& validCellIds,
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const OriginalCellSet& cellset,
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const std::string& name = std::string())
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: ParentType(validCellIds, cellset, name)
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{
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}
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VTKM_CONT
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CellSetPermutation(const std::string& name = std::string())
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: ParentType(name)
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{
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}
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VTKM_CONT
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CellSetPermutation<OriginalCellSet, PermutationArrayHandleType>& operator=(
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const CellSetPermutation<OriginalCellSet, PermutationArrayHandleType>& src)
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{
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ParentType::operator=(src);
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return *this;
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}
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};
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template <typename OriginalCellSet, typename PermutationArrayHandleType>
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vtkm::cont::CellSetPermutation<OriginalCellSet, PermutationArrayHandleType> make_CellSetPermutation(
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const PermutationArrayHandleType& cellIndexMap,
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const OriginalCellSet& cellSet,
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const std::string& name)
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{
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VTKM_IS_CELL_SET(OriginalCellSet);
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VTKM_IS_ARRAY_HANDLE(PermutationArrayHandleType);
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return vtkm::cont::CellSetPermutation<OriginalCellSet, PermutationArrayHandleType>(
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cellIndexMap, cellSet, name);
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}
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template <typename OriginalCellSet, typename PermutationArrayHandleType>
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vtkm::cont::CellSetPermutation<OriginalCellSet, PermutationArrayHandleType> make_CellSetPermutation(
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const PermutationArrayHandleType& cellIndexMap,
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const OriginalCellSet& cellSet)
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{
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VTKM_IS_CELL_SET(OriginalCellSet);
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VTKM_IS_ARRAY_HANDLE(PermutationArrayHandleType);
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return vtkm::cont::make_CellSetPermutation(cellIndexMap, cellSet, cellSet.GetName());
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}
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}
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} // namespace vtkm::cont
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#endif //vtk_m_cont_CellSetPermutation_h
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