mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 10:35:42 +00:00
145 lines
4.0 KiB
C++
145 lines
4.0 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/ArrayHandleCast.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/cont/Initialize.h>
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#include <vtkm/cont/Timer.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/Clip.h>
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#include <algorithm>
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#include <fstream>
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#include <iostream>
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#include <stdexcept>
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#include <string>
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using FloatVec3 = vtkm::Vec<vtkm::Float32, 3>;
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namespace
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{
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struct FieldMapper
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{
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vtkm::cont::VariantArrayHandle& Output;
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vtkm::worklet::Clip& Worklet;
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bool IsCellField;
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FieldMapper(vtkm::cont::VariantArrayHandle& output,
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vtkm::worklet::Clip& worklet,
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bool isCellField)
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: Output(output)
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, Worklet(worklet)
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, IsCellField(isCellField)
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{
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}
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template <typename ArrayType>
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void operator()(const ArrayType& input) const
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{
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if (this->IsCellField)
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{
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this->Output = this->Worklet.ProcessCellField(input);
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}
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else
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{
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this->Output = this->Worklet.ProcessPointField(input);
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}
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}
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};
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} // end anon namespace
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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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if (argc < 4)
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{
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std::cout << "Usage: " << std::endl
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<< "$ " << argv[0]
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<< " [-d device] <input_vtk_file> [fieldName] <isoval> <output_vtk_file>"
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<< std::endl;
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return 1;
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}
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vtkm::io::reader::VTKDataSetReader reader(argv[1]);
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vtkm::cont::DataSet input = reader.ReadDataSet();
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vtkm::cont::Field scalarField = (argc == 5) ? input.GetField(argv[2]) : input.GetField(0);
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vtkm::Float32 clipValue = std::stof(argv[argc - 2]);
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vtkm::worklet::Clip clip;
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vtkm::cont::Timer total;
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total.Start();
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vtkm::cont::Timer timer;
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timer.Start();
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bool invertClip = false;
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vtkm::cont::CellSetExplicit<> outputCellSet =
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clip.Run(input.GetCellSet(0),
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scalarField.GetData().ResetTypes(vtkm::TypeListTagScalarAll()),
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clipValue,
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invertClip);
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vtkm::Float64 clipTime = timer.GetElapsedTime();
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vtkm::cont::DataSet output;
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output.AddCellSet(outputCellSet);
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auto inCoords = input.GetCoordinateSystem(0).GetData();
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timer.Start();
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auto outCoords = clip.ProcessCellField(inCoords);
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vtkm::Float64 processCoordinatesTime = timer.GetElapsedTime();
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output.AddCoordinateSystem(vtkm::cont::CoordinateSystem("coordinates", outCoords));
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timer.Start();
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for (vtkm::Id i = 0; i < input.GetNumberOfFields(); ++i)
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{
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vtkm::cont::Field inField = input.GetField(i);
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bool isCellField;
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switch (inField.GetAssociation())
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{
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case vtkm::cont::Field::Association::POINTS:
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isCellField = false;
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break;
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case vtkm::cont::Field::Association::CELL_SET:
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isCellField = true;
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break;
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default:
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continue;
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}
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vtkm::cont::VariantArrayHandle outField;
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FieldMapper fieldMapper(outField, clip, isCellField);
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inField.GetData().CastAndCall(fieldMapper);
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output.AddField(vtkm::cont::Field(inField.GetName(), inField.GetAssociation(), outField));
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}
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vtkm::Float64 processScalarsTime = timer.GetElapsedTime();
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vtkm::Float64 totalTime = total.GetElapsedTime();
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std::cout << "Timings: " << std::endl
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<< "clip: " << clipTime << std::endl
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<< "process coordinates: " << processCoordinatesTime << std::endl
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<< "process scalars: " << processScalarsTime << std::endl
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<< "Total: " << totalTime << std::endl;
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vtkm::io::writer::VTKDataSetWriter writer(argv[argc - 1]);
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writer.WriteDataSet(output);
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return 0;
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}
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