two_merged_boxes.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_two_merged_boxes_h
#define _aspect_geometry_model_two_merged_boxes_h

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

namespace aspect
{
  namespace GeometryModel
  {
    template <int dim>
    class TwoMergedBoxes : public Interface<dim>, public SimulatorAccess<dim>
    {
      public:

        void initialize () override;

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

        Point<dim> get_extents () const;

        const std::array<unsigned int, dim> &
        get_repetitions () const;

        Point<dim> get_origin () const;

        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;

        double maximal_depth() 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;

        std::set<std::pair<std::pair<types::boundary_id, types::boundary_id>, unsigned int>>
        get_periodic_boundary_pairs () const override;

        void
        adjust_positions_for_periodicity (Point<dim> &position,
                                          const ArrayView<Point<dim>> &connected_positions = {},
                                          const ArrayView<Tensor<1, dim>> &connected_velocities = {}) const override;

        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;

        double
        get_topography_at_point (const Point<dim> &position ) const;

      private:
        void add_topography_to_mesh (typename parallel::distributed::Triangulation<dim> &grid) const;

        Point<dim> add_topography_to_point (const Point<dim> &x_y_z) const;

        bool use_merged_grids;

        Point<dim> extents;

        Point<dim> lower_extents;

        Point<dim> lower_box_origin;

        Point<dim> upper_extents;

        Point<dim> upper_box_origin;

        bool periodic[dim+dim-1];

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

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

        double height_lith;

        void
        set_boundary_indicators (parallel::distributed::Triangulation<dim> &triangulation) const;
    };
  }
}


#endif