93506d25e2
Also cleaned up some lingering type typedefs.
149 lines
5.3 KiB
C++
149 lines
5.3 KiB
C++
//============================================================================
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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 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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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-NA0003525 with NTESS,
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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_worklet_TetrahedralizeExplicit_h
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#define vtk_m_worklet_TetrahedralizeExplicit_h
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/ArrayHandleGroupVec.h>
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#include <vtkm/cont/CellSetExplicit.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/cont/DeviceAdapter.h>
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#include <vtkm/cont/DynamicArrayHandle.h>
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#include <vtkm/cont/Field.h>
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#include <vtkm/worklet/DispatcherMapField.h>
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#include <vtkm/worklet/DispatcherMapTopology.h>
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#include <vtkm/worklet/ScatterCounting.h>
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#include <vtkm/worklet/WorkletMapField.h>
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#include <vtkm/worklet/WorkletMapTopology.h>
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#include <vtkm/worklet/internal/TriangulateTables.h>
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namespace vtkm
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{
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namespace worklet
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{
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/// \brief Compute the tetrahedralize cells for an explicit grid data set
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template <typename DeviceAdapter>
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class TetrahedralizeExplicit
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{
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public:
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TetrahedralizeExplicit() {}
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//
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// Worklet to count the number of tetrahedra generated per cell
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//
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class TetrahedraPerCell : public vtkm::worklet::WorkletMapField
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{
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public:
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using ControlSignature = void(FieldIn<> shapes, ExecObject tables, FieldOut<> tetrahedronCount);
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using ExecutionSignature = _3(_1, _2);
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using InputDomain = _1;
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VTKM_CONT
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TetrahedraPerCell() {}
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VTKM_EXEC
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vtkm::IdComponent operator()(
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vtkm::UInt8 shape,
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const vtkm::worklet::internal::TetrahedralizeTablesExecutionObject<DeviceAdapter>& tables)
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const
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{
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return tables.GetCount(vtkm::CellShapeTagGeneric(shape));
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}
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};
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//
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// Worklet to turn cells into tetrahedra
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// Vertices remain the same and each cell is processed with needing topology
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//
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class TetrahedralizeCell : public vtkm::worklet::WorkletMapPointToCell
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{
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public:
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using ControlSignature = void(CellSetIn cellset,
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ExecObject tables,
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FieldOutCell<> connectivityOut);
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using ExecutionSignature = void(CellShape, PointIndices, _2, _3, VisitIndex);
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using InputDomain = _1;
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using ScatterType = vtkm::worklet::ScatterCounting;
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template <typename CellArrayType>
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VTKM_CONT static ScatterType MakeScatter(const CellArrayType& cellArray)
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{
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return ScatterType(cellArray, DeviceAdapter());
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}
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// Each cell produces tetrahedra and write result at the offset
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template <typename CellShapeTag, typename ConnectivityInVec, typename ConnectivityOutVec>
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VTKM_EXEC void operator()(
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CellShapeTag shape,
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const ConnectivityInVec& connectivityIn,
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const vtkm::worklet::internal::TetrahedralizeTablesExecutionObject<DeviceAdapter>& tables,
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ConnectivityOutVec& connectivityOut,
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vtkm::IdComponent visitIndex) const
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{
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vtkm::Vec<vtkm::IdComponent, 4> tetIndices = tables.GetIndices(shape, visitIndex);
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connectivityOut[0] = connectivityIn[tetIndices[0]];
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connectivityOut[1] = connectivityIn[tetIndices[1]];
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connectivityOut[2] = connectivityIn[tetIndices[2]];
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connectivityOut[3] = connectivityIn[tetIndices[3]];
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}
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};
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template <typename CellSetType>
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vtkm::cont::CellSetSingleType<> Run(const CellSetType& cellSet,
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vtkm::cont::ArrayHandle<vtkm::IdComponent>& outCellsPerCell)
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{
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vtkm::cont::CellSetSingleType<> outCellSet(cellSet.GetName());
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// Input topology
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auto inShapes =
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cellSet.GetShapesArray(vtkm::TopologyElementTagPoint(), vtkm::TopologyElementTagCell());
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auto inNumIndices =
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cellSet.GetNumIndicesArray(vtkm::TopologyElementTagPoint(), vtkm::TopologyElementTagCell());
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// Output topology
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vtkm::cont::ArrayHandle<vtkm::Id> outConnectivity;
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vtkm::worklet::internal::TetrahedralizeTables tables;
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// Determine the number of output cells each input cell will generate
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vtkm::worklet::DispatcherMapField<TetrahedraPerCell, DeviceAdapter> tetPerCellDispatcher;
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tetPerCellDispatcher.Invoke(inShapes, tables.PrepareForInput(), outCellsPerCell);
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// Build new cells
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vtkm::worklet::DispatcherMapTopology<TetrahedralizeCell, DeviceAdapter>
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tetrahedralizeDispatcher(TetrahedralizeCell::MakeScatter(outCellsPerCell));
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tetrahedralizeDispatcher.Invoke(
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cellSet, tables.PrepareForInput(), vtkm::cont::make_ArrayHandleGroupVec<4>(outConnectivity));
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// Add cells to output cellset
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outCellSet.Fill(cellSet.GetNumberOfPoints(), vtkm::CellShapeTagTetra::Id, 4, outConnectivity);
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return outCellSet;
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}
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};
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}
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} // namespace vtkm::worklet
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#endif // vtk_m_worklet_TetrahedralizeExplicit_h
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