interface.h

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/*
 Copyright (C) 2015 - 2022 by the authors of the ASPECT code.

 This file is part of ASPECT.

 ASPECT is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2, or (at your option)
 any later version.

 ASPECT is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with ASPECT; see the file LICENSE.  If not see
 <http://www.gnu.org/licenses/>.
 */

#ifndef _aspect_particle_integrator_interface_h
#define _aspect_particle_integrator_interface_h

#include <aspect/plugins.h>
#include <aspect/global.h>

#include <deal.II/particles/particle.h>
#include <deal.II/particles/particle_handler.h>
#include <deal.II/base/parameter_handler.h>

namespace aspect
{
  namespace Particle
  {
    namespace Integrator
    {
      using namespace dealii;
      using namespace ::Particles;

      template <int dim>
      class Interface
      {
        public:
          virtual ~Interface () = default;

          virtual
          void
          initialize ();

          virtual
          void
          local_integrate_step(const typename ParticleHandler<dim>::particle_iterator &begin_particle,
                               const typename ParticleHandler<dim>::particle_iterator &end_particle,
                               const std::vector<Tensor<1,dim>> &old_velocities,
                               const std::vector<Tensor<1,dim>> &velocities,
                               const double dt) = 0;

          virtual bool new_integration_step();

          virtual std::size_t get_data_size() const;

          virtual std::array<bool, 3> required_solution_vectors() const = 0;

          virtual
          const void *
          read_data(const typename ParticleHandler<dim>::particle_iterator &particle,
                    const void *data);

          virtual
          void *
          write_data(const typename ParticleHandler<dim>::particle_iterator &particle,
                     void *data) const;


          static
          void
          declare_parameters (ParameterHandler &prm);

          virtual
          void
          parse_parameters (ParameterHandler &prm);
      };


      std::string
      integrator_object_names ();


      template <int dim>
      void
      register_particle_integrator (const std::string &name,
                                    const std::string &description,
                                    void (*declare_parameters_function) (ParameterHandler &),
                                    std::unique_ptr<Interface<dim>> (*factory_function) ());

      template <int dim>
      std::unique_ptr<Interface<dim>>
      create_particle_integrator (ParameterHandler &prm);


      template <int dim>
      void
      declare_parameters (ParameterHandler &prm);


      template <int dim>
      void
      write_plugin_graph (std::ostream &output_stream);

#define ASPECT_REGISTER_PARTICLE_INTEGRATOR(classname, name, description) \
  template class classname<2>; \
  template class classname<3>; \
  namespace ASPECT_REGISTER_PARTICLE_INTEGRATOR_ ## classname \
  { \
    aspect::internal::Plugins::RegisterHelper<aspect::Particle::Integrator::Interface<2>,classname<2>> \
    dummy_ ## classname ## _2d (&aspect::Particle::Integrator::register_particle_integrator<2>, \
                                name, description); \
    aspect::internal::Plugins::RegisterHelper<aspect::Particle::Integrator::Interface<3>,classname<3>> \
    dummy_ ## classname ## _3d (&aspect::Particle::Integrator::register_particle_integrator<3>, \
                                name, description); \
  }
    }
  }
}


#endif