fastdg/jacobianengine.hh

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#ifndef DUNE_PDELAB_GRIDOPERATOR_FASTDG_JACOBIANENGINE_HH
#define DUNE_PDELAB_GRIDOPERATOR_FASTDG_JACOBIANENGINE_HH
 
#include <dune/pdelab/constraints/common/constraints.hh>
#include <dune/pdelab/gridfunctionspace/localvector.hh>
#include <dune/pdelab/gridoperator/common/localmatrix.hh>
#include <dune/pdelab/gridoperator/common/diagonallocalmatrix.hh>
#include <dune/pdelab/gridoperator/common/gridoperatorutilities.hh>
#include <dune/pdelab/gridoperator/common/assemblerutilities.hh>
#include <dune/pdelab/gridoperator/common/localassemblerenginebase.hh>
#include <dune/pdelab/localoperator/callswitch.hh>
#include <dune/pdelab/localoperator/flags.hh>
 
namespace Dune{
  namespace PDELab{
 
    template<typename LA>
    class FastDGLocalJacobianAssemblerEngine
      : public LocalAssemblerEngineBase
    {
    public:
 
      template<typename TrialConstraintsContainer, typename TestConstraintsContainer>
      bool needsConstraintsCaching(const TrialConstraintsContainer& cu, const TestConstraintsContainer& cv)
      {
        return cu.containsNonDirichletConstraints() || cv.containsNonDirichletConstraints();
      }
 
      typedef LA LocalAssembler;
 
      typedef typename LA::LocalOperator LOP;
 
      typedef typename LA::LFSU LFSU;
      typedef typename LA::LFSUCache LFSUCache;
      typedef typename LFSU::Traits::GridFunctionSpace GFSU;
      typedef typename LA::LFSV LFSV;
      typedef typename LA::LFSVCache LFSVCache;
      typedef typename LFSV::Traits::GridFunctionSpace GFSV;
 
      typedef typename LA::Traits::Jacobian Jacobian;
      typedef typename Jacobian::ElementType JacobianElement;
      typedef typename Jacobian::template AliasedLocalView<LFSVCache,LFSUCache> JacobianView;
 
      typedef typename LA::Traits::Solution Solution;
      typedef typename Solution::ElementType SolutionElement;
      typedef typename Solution::template ConstAliasedLocalView<LFSUCache> SolutionView;
 
      FastDGLocalJacobianAssemblerEngine(const LocalAssembler & local_assembler_)
        : local_assembler(local_assembler_),
          lop(local_assembler_.localOperator())
      {}
 
 
      FastDGLocalJacobianAssemblerEngine
      (const FastDGLocalJacobianAssemblerEngine &other) :
        local_assembler(other.local_assembler), lop(other.lop),
        global_s_s_view(other.global_s_s_view),
        global_s_n_view(other.global_s_n_view),
        global_a_ss_view(other.global_a_ss_view),
        global_a_sn_view(other.global_a_sn_view),
        global_a_ns_view(other.global_a_ns_view),
        global_a_nn_view(other.global_a_nn_view)
      { }
 
      bool requireSkeleton() const
      { return local_assembler.doAlphaSkeleton(); }
      bool requireSkeletonTwoSided() const
      { return local_assembler.doSkeletonTwoSided(); }
      bool requireUVVolume() const
      { return local_assembler.doAlphaVolume(); }
      bool requireUVSkeleton() const
      { return local_assembler.doAlphaSkeleton(); }
      bool requireUVBoundary() const
      { return local_assembler.doAlphaBoundary(); }
      bool requireUVVolumePostSkeleton() const
      { return local_assembler.doAlphaVolumePostSkeleton(); }
 
      const LocalAssembler & localAssembler() const
      {
        return local_assembler;
      }
 
      const typename LocalAssembler::Traits::TrialGridFunctionSpaceConstraints& trialConstraints() const
      {
        return localAssembler().trialConstraints();
      }
 
      const typename LocalAssembler::Traits::TestGridFunctionSpaceConstraints& testConstraints() const
      {
        return localAssembler().testConstraints();
      }
 
      void setJacobian(Jacobian & jacobian_)
      {
        global_a_ss_view.attach(jacobian_);
        global_a_sn_view.attach(jacobian_);
        global_a_ns_view.attach(jacobian_);
        global_a_nn_view.attach(jacobian_);
      }
 
      void setSolution(const Solution & solution_)
      {
        global_s_s_view.attach(solution_);
        global_s_n_view.attach(solution_);
      }
 
      template<typename EG, typename LFSUC, typename LFSVC>
      void onBindLFSUV(const EG & eg, const LFSUC & lfsu_cache, const LFSVC & lfsv_cache)
      {
        global_s_s_view.bind(lfsu_cache);
        global_a_ss_view.bind(lfsv_cache,lfsu_cache);
      }
 
      template<typename IG, typename LFSUC, typename LFSVC>
      void onBindLFSUVOutside(const IG & ig,
                              const LFSUC & lfsu_s_cache, const LFSVC & lfsv_s_cache,
                              const LFSUC & lfsu_n_cache, const LFSVC & lfsv_n_cache)
      {
        global_s_n_view.bind(lfsu_n_cache);
        global_a_sn_view.bind(lfsv_s_cache,lfsu_n_cache);
        global_a_ns_view.bind(lfsv_n_cache,lfsu_s_cache);
        global_a_nn_view.bind(lfsv_n_cache,lfsu_n_cache);
      }
 
 
      template<typename EG, typename LFSUC, typename LFSVC>
      void onUnbindLFSUV(const EG & eg, const LFSUC & lfsu_cache, const LFSVC & lfsv_cache)
      {
        global_a_ss_view.unbind();
      }
 
      template<typename IG, typename LFSUC, typename LFSVC>
      void onUnbindLFSUVOutside(const IG & ig,
                                const LFSUC & lfsu_s_cache, const LFSVC & lfsv_s_cache,
                                const LFSUC & lfsu_n_cache, const LFSVC & lfsv_n_cache)
      {
        global_a_sn_view.unbind();
        global_a_ns_view.unbind();
        global_a_nn_view.unbind();
      }
 
 
      template<typename LFSUC>
      void loadCoefficientsLFSUInside(const LFSUC & lfsu_cache)
      {}
      template<typename LFSUC>
      void loadCoefficientsLFSUOutside(const LFSUC & lfsu_n_cache)
      {}
      template<typename LFSUC>
      void loadCoefficientsLFSUCoupling(const LFSUC & lfsu_c_cache)
      {
        DUNE_THROW(Dune::NotImplemented,"No coupling lfsu_cache available for ");
      }
 
      void postAssembly(const GFSU& gfsu, const GFSV& gfsv)
      {
        Jacobian& jacobian = global_a_ss_view.container();
        global_s_s_view.detach();
        global_s_n_view.detach();
        global_a_ss_view.detach();
        global_a_sn_view.detach();
        global_a_ns_view.detach();
        global_a_nn_view.detach();
 
        if(local_assembler.doPostProcessing())
          local_assembler.handle_dirichlet_constraints(gfsv,jacobian);
      }
 
 
      template <typename EG> bool skipEntity(const EG &eg)
      {
        return localAssembler().skipEntity(eg) ||
               (LocalAssembler::isNonOverlapping &&
                eg.entity().partitionType() != Dune::InteriorEntity);
      }
 
      template<typename IG>
      bool skipIntersection(const IG & ig)
      {
        return localAssembler().skipIntersection(ig);
      }
 
      template<typename EG, typename LFSUC, typename LFSVC>
      void assembleUVVolume(const EG & eg, const LFSUC & lfsu_cache, const LFSVC & lfsv_cache)
      {
        global_a_ss_view.setWeight(local_assembler.weight());
        Dune::PDELab::LocalAssemblerCallSwitch<LOP,LOP::doAlphaVolume>::
          jacobian_volume(lop,eg,lfsu_cache.localFunctionSpace(),global_s_s_view,lfsv_cache.localFunctionSpace(),global_a_ss_view);
      }
 
      template<typename IG, typename LFSUC, typename LFSVC>
      void assembleUVSkeleton(const IG & ig, const LFSUC & lfsu_s_cache, const LFSVC & lfsv_s_cache,
                              const LFSUC & lfsu_n_cache, const LFSVC & lfsv_n_cache)
      {
        global_a_ss_view.setWeight(local_assembler.weight());
        global_a_sn_view.setWeight(local_assembler.weight());
        global_a_ns_view.setWeight(local_assembler.weight());
        global_a_nn_view.setWeight(local_assembler.weight());
        Dune::PDELab::LocalAssemblerCallSwitch<LOP,LOP::doAlphaSkeleton>::
          jacobian_skeleton(lop,ig,
                            lfsu_s_cache.localFunctionSpace(),global_s_s_view,lfsv_s_cache.localFunctionSpace(),
                            lfsu_n_cache.localFunctionSpace(),global_s_n_view,lfsv_n_cache.localFunctionSpace(),
                            global_a_ss_view, global_a_sn_view,
                            global_a_ns_view, global_a_nn_view);
      }
 
      template<typename IG, typename LFSUC, typename LFSVC>
      void assembleUVBoundary(const IG & ig, const LFSUC & lfsu_s_cache, const LFSVC & lfsv_s_cache)
      {
        global_a_ss_view.setWeight(local_assembler.weight());
        Dune::PDELab::LocalAssemblerCallSwitch<LOP,LOP::doAlphaBoundary>::
          jacobian_boundary(lop,ig,lfsu_s_cache.localFunctionSpace(),global_s_s_view,lfsv_s_cache.localFunctionSpace(),global_a_ss_view);
      }
 
      template<typename IG, typename LFSUC, typename LFSVC>
      static void assembleUVEnrichedCoupling(const IG & ig,
                                             const LFSUC & lfsu_s_cache, const LFSVC & lfsv_s_cache,
                                             const LFSUC & lfsu_n_cache, const LFSVC & lfsv_n_cache,
                                             const LFSUC & lfsu_coupling_cache, const LFSVC & lfsv_coupling_cache)
      {
        DUNE_THROW(Dune::NotImplemented,"Assembling of coupling spaces is not implemented for ");
      }
 
      template<typename IG, typename LFSVC>
      static void assembleVEnrichedCoupling(const IG & ig,
                                            const LFSVC & lfsv_s_cache,
                                            const LFSVC & lfsv_n_cache,
                                            const LFSVC & lfsv_coupling_cache)
      {
        DUNE_THROW(Dune::NotImplemented,"Assembling of coupling spaces is not implemented for ");
      }
 
      template<typename EG, typename LFSUC, typename LFSVC>
      void assembleUVVolumePostSkeleton(const EG & eg, const LFSUC & lfsu_cache, const LFSVC & lfsv_cache)
      {
        global_a_ss_view.setWeight(local_assembler.weight());
        Dune::PDELab::LocalAssemblerCallSwitch<LOP,LOP::doAlphaVolumePostSkeleton>::
          jacobian_volume_post_skeleton(lop,eg,lfsu_cache.localFunctionSpace(),global_s_s_view,lfsv_cache.localFunctionSpace(),global_a_ss_view);
      }
 
 
    private:
      const LocalAssembler & local_assembler;
 
      const LOP & lop;
 
      SolutionView global_s_s_view;
      SolutionView global_s_n_view;
 
      JacobianView global_a_ss_view;
      JacobianView global_a_sn_view;
      JacobianView global_a_ns_view;
      JacobianView global_a_nn_view;
 
      typedef Dune::PDELab::TrialSpaceTag LocalTrialSpaceTag;
      typedef Dune::PDELab::TestSpaceTag LocalTestSpaceTag;
 
      typedef Dune::PDELab::LocalVector<SolutionElement, LocalTrialSpaceTag> SolutionVector;
      typedef typename std::conditional<
        std::is_base_of<
          lop::DiagonalJacobian,
          LOP
          >::value,
        Dune::PDELab::DiagonalLocalMatrix<JacobianElement>,
        Dune::PDELab::LocalMatrix<JacobianElement>
        >::type JacobianMatrix;
 
 
    }; // End of class FastDGLocalJacobianAssemblerEngine
 
  }
}
#endif