Line data    Source code

       1            0 : // Distributed under the MIT License.
       2              : // See LICENSE.txt for details.
       3              : 
       4              : #pragma once
       5              : 
       6              : #include <array>
       7              : #include <cstddef>
       8              : #include <unordered_map>
       9              : #include <utility>
      10              : 
      11              : #include "DataStructures/TaggedTuple.hpp"
      12              : #include "DataStructures/Variables.hpp"
      13              : #include "Domain/Structure/ChildSize.hpp"
      14              : #include "Domain/Structure/Element.hpp"
      15              : #include "Domain/Structure/ElementId.hpp"
      16              : #include "Domain/Tags.hpp"
      17              : #include "NumericalAlgorithms/Spectral/Mesh.hpp"
      18              : #include "NumericalAlgorithms/Spectral/Projection.hpp"
      19              : #include "NumericalAlgorithms/Spectral/SegmentSize.hpp"
      20              : #include "ParallelAlgorithms/Amr/Protocols/Projector.hpp"
      21              : #include "Utilities/Gsl.hpp"
      22              : #include "Utilities/MakeArray.hpp"
      23              : #include "Utilities/TMPL.hpp"
      24              : 
      25              : namespace amr::projectors {
      26              : 
      27              : /// \brief Update the Variables corresponding to VariablesTags after an AMR
      28              : /// change
      29              : ///
      30              : /// There is a specialization for
      31              : /// `ProjectVariables<tmpl::list<VariablesTags...>>` that can be used if a
      32              : /// `tmpl::list` is available.
      33              : ///
      34              : /// \details For each item corresponding to each tag in VariablesTags, project
      35              : /// the data for each variable from the old mesh to the new mesh
      36              : ///
      37              : /// \see ProjectTensors
      38              : template <size_t Dim, typename... VariablesTags>
      39            1 : struct ProjectVariables : tt::ConformsTo<amr::protocols::Projector> {
      40            0 :   using return_tags = tmpl::list<VariablesTags...>;
      41            0 :   using argument_tags =
      42              :       tmpl::list<domain::Tags::Element<Dim>, domain::Tags::Mesh<Dim>>;
      43              : 
      44              :   // p-refinement
      45            0 :   static void apply(
      46              :       const gsl::not_null<typename VariablesTags::type*>... vars,
      47              :       const Element<Dim>& /*element*/, const Mesh<Dim>& new_mesh,
      48              :       const std::pair<Mesh<Dim>, Element<Dim>>& old_mesh_and_element) {
      49              :     const auto& old_mesh = old_mesh_and_element.first;
      50              :     if (old_mesh == new_mesh) {
      51              :       return;  // mesh was not refined, so no projection needed
      52              :     }
      53              :     expand_pack((*vars = Spectral::project(
      54              :                      *vars, old_mesh, new_mesh,
      55              :                      make_array<Dim>(Spectral::SegmentSize::Full),
      56              :                      make_array<Dim>(Spectral::SegmentSize::Full)))...);
      57              :   }
      58              : 
      59              :   // h-refinement
      60              :   template <typename... Tags>
      61            0 :   static void apply(const gsl::not_null<typename VariablesTags::type*>... vars,
      62              :                     const Element<Dim>& element, const Mesh<Dim>& new_mesh,
      63              :                     const tuples::TaggedTuple<Tags...>& parent_items) {
      64              :     const auto& element_id = element.id();
      65              :     const auto& parent_id = get<domain::Tags::Element<Dim>>(parent_items).id();
      66              :     const auto& parent_mesh = get<domain::Tags::Mesh<Dim>>(parent_items);
      67              :     const auto child_sizes =
      68              :         domain::child_size(element_id.segment_ids(), parent_id.segment_ids());
      69              :     expand_pack((Spectral::project(vars, get<VariablesTags>(parent_items),
      70              :                                    parent_mesh, new_mesh,
      71              :                                    make_array<Dim>(Spectral::SegmentSize::Full),
      72              :                                    child_sizes),
      73              :                  0)...);
      74              :   }
      75              : 
      76              :   // h-coarsening
      77              :   template <typename... Tags>
      78            0 :   static void apply(
      79              :       const gsl::not_null<typename VariablesTags::type*>... vars,
      80              :       const Element<Dim>& element, const Mesh<Dim>& new_mesh,
      81              :       const std::unordered_map<ElementId<Dim>, tuples::TaggedTuple<Tags...>>&
      82              :           children_items) {
      83              :     const auto& element_id = element.id();
      84              :     bool first_child = true;
      85              :     for (const auto& [child_id, child_items] : children_items) {
      86              :       const auto& child_mesh = get<domain::Tags::Mesh<Dim>>(child_items);
      87              :       const auto child_sizes =
      88              :           domain::child_size(child_id.segment_ids(), element_id.segment_ids());
      89              :       if (first_child) {
      90              :         expand_pack(
      91              :             (Spectral::project(vars, get<VariablesTags>(child_items),
      92              :                                child_mesh, new_mesh, child_sizes,
      93              :                                make_array<Dim>(Spectral::SegmentSize::Full)),
      94              :              0)...);
      95              :         first_child = false;
      96              :       } else {
      97              :         expand_pack((*vars += Spectral::project(
      98              :                          get<VariablesTags>(child_items), child_mesh, new_mesh,
      99              :                          child_sizes,
     100              :                          make_array<Dim>(Spectral::SegmentSize::Full)))...);
     101              :       }
     102              :     }
     103              :   }
     104              : };
     105              : 
     106              : /// \cond
     107              : template <size_t Dim, typename... VariableTags>
     108              : struct ProjectVariables<Dim, tmpl::list<VariableTags...>>
     109              :     : public ProjectVariables<Dim, VariableTags...> {};
     110              : /// \endcond
     111              : }  // namespace amr::projectors