Line data    Source code

       1           0 : // Distributed under the MIT License.
       2             : // See LICENSE.txt for details.
       3             : 
       4             : #pragma once
       5             : 
       6             : #include <cstddef>
       7             : #include <unordered_map>
       8             : #include <utility>
       9             : 
      10             : #include "DataStructures/ApplyMatrices.hpp"
      11             : #include "DataStructures/Variables.hpp"
      12             : #include "Domain/Structure/Element.hpp"
      13             : #include "Domain/Structure/ElementId.hpp"
      14             : #include "Domain/Tags.hpp"
      15             : #include "NumericalAlgorithms/Spectral/Mesh.hpp"
      16             : #include "NumericalAlgorithms/Spectral/Projection.hpp"
      17             : #include "ParallelAlgorithms/Amr/Protocols/Projector.hpp"
      18             : #include "Utilities/Gsl.hpp"
      19             : #include "Utilities/TMPL.hpp"
      20             : #include "Utilities/TaggedTuple.hpp"
      21             : 
      22             : namespace amr::projectors {
      23             : 
      24             : /// \brief Update the Tensors corresponding to TensorTags after an AMR
      25             : /// change
      26             : ///
      27             : /// There is a specialization for
      28             : /// `ProjectTensors<tmpl::list<TensorTags...>>` that can be used if a
      29             : /// `tmpl::list` is available.
      30             : ///
      31             : /// \details For each item corresponding to each tag in TensorTags, project
      32             : /// the data for each tensor from the old mesh to the new mesh
      33             : ///
      34             : /// \see ProjectVariables
      35             : template <size_t Dim, typename... TensorTags>
      36           1 : struct ProjectTensors : tt::ConformsTo<amr::protocols::Projector> {
      37           0 :   using return_tags = tmpl::list<TensorTags...>;
      38           0 :   using argument_tags = tmpl::list<domain::Tags::Mesh<Dim>>;
      39             : 
      40           0 :   static void apply(
      41             :       const gsl::not_null<typename TensorTags::type*>... tensors,
      42             :       const Mesh<Dim>& new_mesh,
      43             :       const std::pair<Mesh<Dim>, Element<Dim>>& old_mesh_and_element) {
      44             :     const auto& old_mesh = old_mesh_and_element.first;
      45             :     if (old_mesh == new_mesh) {
      46             :       return;  // mesh was not refined, so no projection needed
      47             :     }
      48             :     const auto projection_matrices =
      49             :         Spectral::p_projection_matrices(old_mesh, new_mesh);
      50             :     const auto& old_extents = old_mesh.extents();
      51             :     const auto project_tensor = [&projection_matrices,
      52             :                                  old_extents](auto& tensor) {
      53             :       for (size_t i = 0; i < tensor.size(); ++i) {
      54             :         tensor[i] = apply_matrices(projection_matrices, tensor[i], old_extents);
      55             :       }
      56             :     };
      57             :     EXPAND_PACK_LEFT_TO_RIGHT(project_tensor(*tensors));
      58             :   }
      59             : 
      60             :   template <typename... Tags>
      61           0 :   static void apply(
      62             :       const gsl::not_null<typename TensorTags::type*>... /*tensors*/,
      63             :       const Mesh<Dim>& /*new_mesh*/,
      64             :       const tuples::TaggedTuple<Tags...>& /*parent_items*/) {
      65             :     ERROR("h-refinement not implemented yet");
      66             :   }
      67             : 
      68             :   template <typename... Tags>
      69           0 :   static void apply(
      70             :       const gsl::not_null<typename TensorTags::type*>... /*tensors*/,
      71             :       const Mesh<Dim>& /*new_mesh*/,
      72             :       const std::unordered_map<ElementId<Dim>, tuples::TaggedTuple<Tags...>>&
      73             :       /*children_items*/) {
      74             :     ERROR("h-refinement not implemented yet");
      75             :   }
      76             : };
      77             : 
      78             : /// \cond
      79             : template <size_t Dim, typename... TensorTags>
      80             : struct ProjectTensors<Dim, tmpl::list<TensorTags...>>
      81             :     : public ProjectTensors<Dim, TensorTags...> {};
      82             : /// \endcond
      83             : }  // namespace amr::projectors