mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-20 02:55:47 +00:00
139 lines
4.7 KiB
C++
139 lines
4.7 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 2014 Sandia Corporation.
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// Copyright 2014 UT-Battelle, LLC.
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// Copyright 2014 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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#include <vtkm/worklet/ScatterCounting.h>
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#include <vtkm/worklet/DispatcherMapField.h>
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namespace vtkm {
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namespace filter {
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struct DistributeCellData : public vtkm::worklet::WorkletMapField
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{
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typedef void ControlSignature(FieldIn<> inIndices,
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FieldOut<> outIndices);
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typedef void ExecutionSignature(_1, _2);
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typedef vtkm::worklet::ScatterCounting ScatterType;
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VTKM_CONT
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ScatterType GetScatter() const { return this->Scatter; }
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template <typename CountArrayType, typename DeviceAdapter>
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VTKM_CONT
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DistributeCellData(const CountArrayType &countArray,
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DeviceAdapter device) :
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Scatter(countArray, device) { }
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template <typename T>
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VTKM_EXEC
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void operator()(T inputIndex,
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T &outputIndex) const
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{
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outputIndex = inputIndex;
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}
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private:
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ScatterType Scatter;
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};
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//-----------------------------------------------------------------------------
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inline VTKM_CONT
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Tetrahedralize::Tetrahedralize():
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vtkm::filter::FilterDataSet<Tetrahedralize>()
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{
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}
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//-----------------------------------------------------------------------------
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template<typename DerivedPolicy,
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typename DeviceAdapter>
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inline VTKM_CONT
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vtkm::filter::ResultDataSet Tetrahedralize::DoExecute(
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const vtkm::cont::DataSet& input,
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const vtkm::filter::PolicyBase<DerivedPolicy>& policy,
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const DeviceAdapter& device)
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{
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typedef vtkm::cont::DeviceAdapterAlgorithm<DeviceAdapter> DeviceAlgorithm;
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typedef vtkm::cont::CellSetStructured<3> CellSetStructuredType;
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typedef vtkm::cont::CellSetExplicit<> CellSetExplicitType;
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const vtkm::cont::DynamicCellSet& cells =
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input.GetCellSet(this->GetActiveCellSetIndex());
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vtkm::Id numberOfCells = cells.GetNumberOfCells();
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vtkm::cont::CellSetSingleType<> outCellSet;
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vtkm::worklet::Tetrahedralize<DeviceAdapter> worklet;
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if (cells.IsType<CellSetStructuredType>())
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{
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DeviceAlgorithm::Copy(vtkm::cont::ArrayHandleConstant<vtkm::IdComponent>(5, numberOfCells),
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this->OutCellsPerCell);
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outCellSet = worklet.Run(cells.Cast<CellSetStructuredType>());
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}
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else
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{
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outCellSet = worklet.Run(cells.Cast<CellSetExplicitType>(), this->OutCellsPerCell);
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}
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// create the output dataset
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vtkm::cont::DataSet output;
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output.AddCellSet(outCellSet);
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output.AddCoordinateSystem(input.GetCoordinateSystem(this->GetActiveCoordinateSystemIndex()) );
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return vtkm::filter::ResultDataSet(output);
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}
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//-----------------------------------------------------------------------------
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template<typename T,
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typename StorageType,
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typename DerivedPolicy,
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typename DeviceAdapter>
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inline VTKM_CONT
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bool Tetrahedralize::DoMapField(
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vtkm::filter::ResultDataSet& result,
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const vtkm::cont::ArrayHandle<T, StorageType>& input,
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const vtkm::filter::FieldMetadata& fieldMeta,
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const vtkm::filter::PolicyBase<DerivedPolicy>& policy,
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const DeviceAdapter& device)
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{
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// point data is copied as is because it was not collapsed
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if(fieldMeta.IsPointField())
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{
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result.GetDataSet().AddField(fieldMeta.AsField(input));
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return true;
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}
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// cell data must be scattered to the cells created per input cell
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if(fieldMeta.IsCellField())
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{
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vtkm::cont::ArrayHandle<T, StorageType> output;
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DistributeCellData distribute(this->OutCellsPerCell, device);
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vtkm::worklet::DispatcherMapField<DistributeCellData, DeviceAdapter> dispatcher(distribute);
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dispatcher.Invoke(input, output);
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result.GetDataSet().AddField(fieldMeta.AsField(output));
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return true;
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}
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return false;
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}
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}
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}
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