indicator.h

Go to the documentation of this file.

//
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// Copyright (C) 2023 - 2025 by the ryujin authors
//
 
#pragma once
 
#include <compile_time_options.h>
 
#include "hyperbolic_system.h"
 
#include <multicomponent_vector.h>
#include <observer_pointer.h>
#include <simd.h>
 
#include <deal.II/base/parameter_acceptor.h>
#include <deal.II/base/vectorization.h>
 
 
namespace ryujin
{
  namespace Skeleton
  {
    template <int dim, typename Number = double>
    class IndicatorView;
 
    template <typename ScalarNumber = double>
    class Indicator : public dealii::ParameterAcceptor
    {
    public:
 
      template <int dim, typename Number = double>
      using View = IndicatorView<dim, Number>;
 
 
 
      Indicator(const HyperbolicSystem &hyperbolic_system,
                const std::string &subsection = "/Indicator")
          : ParameterAcceptor(subsection)
          , hyperbolic_system_(&hyperbolic_system)
      {
      }
 
 
 
      template <int dim, typename Number>
      auto view() const
      {
        return View<dim, Number>{
            hyperbolic_system_->template view<dim, Number>(), *this};
      }
 
    private:
 
 
      dealii::ObserverPointer<const HyperbolicSystem> hyperbolic_system_;
 
    };
 
 
    template <int dim, typename Number>
    class IndicatorView
    {
    public:
 
      using View = HyperbolicSystemView<dim, Number>;
 
      using ScalarNumber = typename View::ScalarNumber;
 
      using state_type = typename View::state_type;
 
      using PrecomputedVectorView = typename View::PrecomputedVectorView;
 
 
 
      IndicatorView(const View &view, const Indicator<ScalarNumber> &indicator)
          : view_(view)
          , indicator_(indicator)
      {
      }
 
      void reset(const PrecomputedVectorView & /*pv*/,
                 const unsigned int /*i*/,
                 const state_type & /*U_i*/)
      {
        // empty
      }
 
      void accumulate(const PrecomputedVectorView & /*pv*/,
                      const unsigned int * /*js*/,
                      const state_type & /*U_j*/,
                      const dealii::Tensor<1, dim, Number> & /*c_ij*/)
      {
        // empty
      }
 
      Number alpha(const Number /*h_i*/) const
      {
        return Number(0.);
      }
 
 
    private:
 
 
      const View view_;
      const Indicator<ScalarNumber> &indicator_;
 
    };
  } // namespace Skeleton
} // namespace ryujin