text: //============================================================================
  //  Copyright (c) Kitware, Inc.
  //  All rights reserved.
  //  See LICENSE.txt for details.
  //
  //  This software is distributed WITHOUT ANY WARRANTY; without even
  //  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  //  PURPOSE.  See the above copyright notice for more information.
  //============================================================================
  
  #ifndef vtk_m_filter_Lagrangian_h
  #define vtk_m_filter_Lagrangian_h
  
  #include <vtkm/filter/FilterDataSetWithField.h>
  
  namespace vtkm
  {
  namespace filter
  {
  
  class Lagrangian : public vtkm::filter::FilterDataSetWithField<Lagrangian>
  {
  public:
    using SupportedTypes = vtkm::TypeListTagFieldVec3;
  
    VTKM_CONT
    Lagrangian();
  
    VTKM_CONT
    void SetRank(vtkm::Id val) { this->rank = val; }
  
    VTKM_CONT
    void SetInitFlag(bool val) { this->initFlag = val; }
  
    VTKM_CONT
    void SetExtractFlows(bool val) { this->extractFlows = val; }
  
    VTKM_CONT
    void SetResetParticles(bool val) { this->resetParticles = val; }
  
    VTKM_CONT
    void SetStepSize(vtkm::Float32 val) { this->stepSize = val; }
  
    VTKM_CONT
    void SetWriteFrequency(vtkm::Id val) { this->writeFrequency = val; }
  
    VTKM_CONT
    void SetSeedResolutionInX(vtkm::Id val) { this->x_res = val; }
  
    VTKM_CONT
    void SetSeedResolutionInY(vtkm::Id val) { this->y_res = val; }
  
    VTKM_CONT
    void SetSeedResolutionInZ(vtkm::Id val) { this->z_res = val; }
  
    VTKM_CONT
    void SetCustomSeedResolution(vtkm::Id val) { this->cust_res = val; }
  
    VTKM_CONT
    void SetSeedingResolution(vtkm::Id3 val) { this->SeedRes = val; }
  
    VTKM_CONT
    void UpdateSeedResolution(vtkm::cont::DataSet input);
  
    VTKM_CONT
    void WriteDataSet(vtkm::Id cycle, const std::string& filename, vtkm::cont::DataSet dataset);
  
    VTKM_CONT
    void InitializeUniformSeeds(const vtkm::cont::DataSet& input);
  
    template <typename T, typename StorageType, typename DerivedPolicy>
    VTKM_CONT vtkm::cont::DataSet DoExecute(
      const vtkm::cont::DataSet& input,
      const vtkm::cont::ArrayHandle<vtkm::Vec<T, 3>, StorageType>& field,
      const vtkm::filter::FieldMetadata& fieldMeta,
      vtkm::filter::PolicyBase<DerivedPolicy> policy);
  
  
    template <typename T, typename StorageType, typename DerivedPolicy>
    VTKM_CONT bool DoMapField(vtkm::cont::DataSet& result,
                              const vtkm::cont::ArrayHandle<T, StorageType>& input,
                              const vtkm::filter::FieldMetadata& fieldMeta,
                              vtkm::filter::PolicyBase<DerivedPolicy> policy);
  
  private:
    vtkm::Id rank;
    bool initFlag;
    bool extractFlows;
    bool resetParticles;
    vtkm::Float32 stepSize;
    vtkm::Id x_res, y_res, z_res;
    vtkm::Id cust_res;
    vtkm::Id3 SeedRes;
    vtkm::Id writeFrequency;
  };
  }
  } // namespace vtkm::filter
  
  #include <vtkm/filter/Lagrangian.hxx>
  
  #endif // vtk_m_filter_Lagrangian_h
  