chunk.h

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// ------------------------------------------------------
//
// SPDX-License-Identifier: GPL-2.0-or-later
//
// SPDX-FileCopyrightText: Copyright (C) 2011-2026 by the ASPECT authors.
//
// This file is part of ASPECT.
//
// Detailed license information governing the source code and
// contributions can be found in the folder LICENSES and in
// LICENSE and CONTRIBUTING.md at the top level directory.
//
// ------------------------------------------------------


#ifndef _aspect_geometry_model_chunk_h
#define _aspect_geometry_model_chunk_h

#include <aspect/geometry_model/interface.h>
#include <aspect/simulator_access.h>

#include <deal.II/grid/manifold.h>
#include <deal.II/base/function_lib.h>
#include <deal.II/grid/grid_out.h>

namespace aspect
{
  namespace GeometryModel
  {
    namespace internal
    {
      template <int dim>
      class ChunkGeometry : public ChartManifold<dim,dim>
      {
        public:
          ChunkGeometry(const std::shared_ptr<const InitialTopographyModel::Interface<dim>> &topography,
                        const double min_longitude,
                        const double min_radius,
                        const double max_depth);

          ChunkGeometry(const ChunkGeometry &other) = default;

          Point<dim>
          pull_back(const Point<dim> &space_point) const override;

          Point<dim>
          push_forward(const Point<dim> &chart_point) const override;

          DerivativeForm<1, dim, dim>
          push_forward_gradient(const Point<dim> &chart_point) const override;

          Point<dim>
          pull_back_sphere(const Point<dim> &space_point) const;

          Point<dim>
          push_forward_sphere(const Point<dim> &chart_point) const;

          virtual Tensor<1, dim>
          normal_vector(
            const typename Triangulation<dim>::face_iterator &face,
            const Point<dim> &p) const override;

          std::unique_ptr<Manifold<dim,dim>>
          clone() const override;

          double topography_for_point(const Point<dim> &x_y_z) const;

        private:
          const std::shared_ptr<const InitialTopographyModel::Interface<dim>> topo;

          double point1_lon;

          double inner_radius;

          double max_depth;

          virtual
          Point<dim>
          pull_back_topo(const Point<dim> &space_point) const;

          virtual
          Point<dim>
          push_forward_topo(const Point<dim> &chart_point) const;
      };
    }

    template <int dim>
    class Chunk : public Interface<dim>, public SimulatorAccess<dim>
    {
      public:

        void initialize () override;

        void create_coarse_mesh (parallel::distributed::Triangulation<dim> &coarse_grid) const override;


        std::set<types::boundary_id>
        get_used_boundary_indicators () const override;

        std::map<std::string,types::boundary_id>
        get_symbolic_boundary_names_map () const override;


        double length_scale () const override;

        double depth(const Point<dim> &position) const override;

        double height_above_reference_surface(const Point<dim> &position) const override;

        Point<dim> representative_point(const double depth) const override;

        virtual
        double west_longitude() const;

        virtual
        double east_longitude() const;

        virtual
        double longitude_range() const;

        virtual
        double south_latitude() const;

        virtual
        double north_latitude() const;

        virtual
        double latitude_range() const;

        double maximal_depth() const override;

        virtual
        double inner_radius() const;

        virtual
        double outer_radius() const;


        bool
        has_curved_elements() const override;

        bool
        point_is_in_domain(const Point<dim> &point) const override;

        aspect::Utilities::Coordinates::CoordinateSystem natural_coordinate_system() const override;

        std::array<double,dim> cartesian_to_natural_coordinates(const Point<dim> &position) const override;

        Point<dim> natural_to_cartesian_coordinates(const std::array<double,dim> &position) const override;

        static
        void
        declare_parameters (ParameterHandler &prm);

        void
        parse_parameters (ParameterHandler &prm) override;

      private:
        Point<dim> point1;

        Point<dim> point2;

        std::array<unsigned int, dim> repetitions;

        std::unique_ptr<const internal::ChunkGeometry<dim>> manifold;

        static constexpr types::manifold_id my_manifold_id = 15;
    };
  }
}


#endif