field_transfer.h

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// ---------------------------------------------------------------------
//
// Copyright (C) 2021 - 2023 by the deal.II authors
//
// This file is part of the deal.II library.
//
// The deal.II library is free software; you can use it, redistribute
// it, and/or modify it under the terms of the GNU Lesser General
// Public License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// The full text of the license can be found in the file LICENSE.md at
// the top level directory of deal.II.
//
// ---------------------------------------------------------------------
 
#ifndef dealii_distributed_field_transfer_h
#define dealii_distributed_field_transfer_h
 
#include <deal.II/base/config.h>
 
#include <deal.II/distributed/cell_data_transfer.templates.h>
 
#include <deal.II/dofs/dof_handler.h>
 
#include <memory>
 
DEAL_II_NAMESPACE_OPEN
 
namespace parallel
{
  namespace distributed
  {
    namespace experimental
    {
      template <int dim, typename VectorType, int spacedim = dim>
      class FieldTransfer
      {
      private:
        using Number = typename VectorType::value_type;
 
      public:
        FieldTransfer(const DoFHandler<dim, spacedim> &dof_handler);
 
        void
        prepare_for_coarsening_and_refinement(
          const VectorType & in,
          const unsigned int fe_nothing_index);
 
        void
        interpolate(const Number &                   new_value,
                    const AffineConstraints<Number> &affine_constraints,
                    VectorType &                     out);
 
      private:
        const DoFHandler<dim, spacedim> &dof_handler;
 
        std::vector<Vector<Number>> data_to_transfer;
 
        std::unique_ptr<
          CellDataTransfer<dim, spacedim, std::vector<Vector<Number>>>>
          cell_data_transfer;
      };
    } // namespace experimental
  }   // namespace distributed
} // namespace parallel
 
DEAL_II_NAMESPACE_CLOSE
 
#endif