mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-07-30 18:50:59 +00:00
111 lines
3.5 KiB
C++
111 lines
3.5 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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//
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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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#include <vtkm/cont/Initialize.h>
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#include <vtkm/io/reader/VTKDataSetReader.h>
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#include <vtkm/io/writer/VTKDataSetWriter.h>
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#include <vtkm/worklet/WorkletMapTopology.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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struct ConvertPointFieldToCells : vtkm::worklet::WorkletVisitCellsWithPoints
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{
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using ControlSignature = void(CellSetIn topology,
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FieldInPoint inPointField,
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FieldOutCell outCellField);
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using ExecutionSignature = void(_2 inPointField, _3 outCellField);
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using InputDomain = _1;
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template <typename InPointFieldVecType, typename OutCellFieldType>
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void operator()(const InPointFieldVecType& inPointFieldVec, OutCellFieldType& outCellField) const
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{
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vtkm::IdComponent numPoints = inPointFieldVec.GetNumberOfComponents();
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outCellField = OutCellFieldType(0);
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for (vtkm::IdComponent pointIndex = 0; pointIndex < numPoints; ++pointIndex)
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{
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outCellField = outCellField + inPointFieldVec[pointIndex];
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}
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outCellField = outCellField / OutCellFieldType(numPoints);
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}
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};
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} // namespace worklet
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} // namespace vtkm
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#include <vtkm/filter/FilterField.h>
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namespace vtkm
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{
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namespace filter
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{
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struct ConvertPointFieldToCells : vtkm::filter::FilterField<ConvertPointFieldToCells>
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{
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template <typename ArrayHandleType, typename Policy>
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VTKM_CONT vtkm::cont::DataSet DoExecute(const vtkm::cont::DataSet& inDataSet,
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const ArrayHandleType& inField,
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const vtkm::filter::FieldMetadata& fieldMetadata,
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vtkm::filter::PolicyBase<Policy>);
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};
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template <typename ArrayHandleType, typename Policy>
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VTKM_CONT cont::DataSet ConvertPointFieldToCells::DoExecute(
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const vtkm::cont::DataSet& inDataSet,
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const ArrayHandleType& inField,
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const vtkm::filter::FieldMetadata& fieldMetadata,
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vtkm::filter::PolicyBase<Policy> policy)
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{
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VTKM_IS_ARRAY_HANDLE(ArrayHandleType);
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using ValueType = typename ArrayHandleType::ValueType;
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vtkm::cont::ArrayHandle<ValueType> outField;
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this->Invoke(vtkm::worklet::ConvertPointFieldToCells{},
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vtkm::filter::ApplyPolicyCellSet(inDataSet.GetCellSet(), policy, *this),
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inField,
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outField);
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std::string outFieldName = this->GetOutputFieldName();
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if (outFieldName == "")
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{
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outFieldName = fieldMetadata.GetName();
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}
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return vtkm::filter::CreateResultFieldCell(inDataSet, outField, outFieldName);
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}
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} // namespace filter
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} // namespace vtkm
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int main(int argc, char** argv)
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{
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auto opts = vtkm::cont::InitializeOptions::DefaultAnyDevice;
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vtkm::cont::InitializeResult config = vtkm::cont::Initialize(argc, argv, opts);
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const char* input = "data/kitchen.vtk";
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vtkm::io::VTKDataSetReader reader(input);
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vtkm::cont::DataSet ds_from_file = reader.ReadDataSet();
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vtkm::filter::ConvertPointFieldToCells pointToCell;
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pointToCell.SetActiveField("c1");
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vtkm::cont::DataSet ds_from_convert = pointToCell.Execute(ds_from_file);
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vtkm::io::VTKDataSetWriter writer("out_point_to_cell.vtk");
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writer.WriteDataSet(ds_from_convert);
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return 0;
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}
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