mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 13:23:51 +00:00
58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
//=============================================================================
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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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//
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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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//=============================================================================
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#include <cmath>
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#include <string>
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#include <vector>
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#include <vtkm/cont/ArrayCopy.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/cont/DataSetBuilderUniform.h>
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#include <vtkm/cont/Initialize.h>
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#include <vtkm/io/VTKDataSetReader.h>
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#include <vtkm/io/VTKDataSetWriter.h>
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#include <vtkm/filter/LagrangianStructures.h>
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int main(int argc, char** argv)
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{
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vtkm::cont::Initialize(argc, argv);
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if (argc < 3)
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{
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std::cout << "Usage : flte <input dataset> <vector field name>" << std::endl;
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}
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std::string datasetName(argv[1]);
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std::string variableName(argv[2]);
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std::cout << "Reading input dataset" << std::endl;
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vtkm::cont::DataSet input;
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vtkm::io::VTKDataSetReader reader(datasetName);
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input = reader.ReadDataSet();
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std::cout << "Read input dataset" << std::endl;
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vtkm::filter::LagrangianStructures lcsFilter;
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lcsFilter.SetStepSize(0.025f);
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lcsFilter.SetNumberOfSteps(500);
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lcsFilter.SetAdvectionTime(0.025f * 500);
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lcsFilter.SetOutputFieldName("gradient");
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lcsFilter.SetActiveField(variableName);
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vtkm::cont::DataSet output = lcsFilter.Execute(input);
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vtkm::io::VTKDataSetWriter writer("out.vtk");
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writer.WriteDataSet(output);
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std::cout << "Written output dataset" << std::endl;
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return 0;
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}
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