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