text: /*
  This file forms part of hpGEM. This package has been developed over a number of
  years by various people at the University of Twente and a full list of
  contributors can be found at http://hpgem.org/about-the-code/team
  
  This code is distributed using BSD 3-Clause License. A copy of which can found
  below.
  
  
  Copyright (c) 2018, Univesity of Twenete
  All rights reserved.
  
  Redistribution and use in source and binary forms, with or without modification,
  are permitted provided that the following conditions are met:
  
  1. Redistributions of source code must retain the above copyright notice, this
  list of conditions and the following disclaimer.
  
  2. Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation and/or
  other materials provided with the distribution.
  
  3. Neither the name of the copyright holder nor the names of its contributors
  may be used to endorse or promote products derived from this software without
  specific prior written permission.
  
  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
  
  #ifndef HPGEM_APP_DGMAXHARMONIC_H
  #define HPGEM_APP_DGMAXHARMONIC_H
  
  #include "../ProblemTypes/AbstractHarmonicSolver.h"
  #include "../ProblemTypes/HarmonicProblem.h"
  
  #include "DGMaxDiscretization.h"
  
  using namespace hpgem;
  
  /// \brief Solver for a harmonic problem to find the fields.
  template <std::size_t DIM>
  class DGMaxHarmonic : public DGMax::AbstractHarmonicSolver<DIM> {
     public:
      DGMaxHarmonic(Base::MeshManipulator<DIM>& mesh, double stab,
                    std::size_t order);
      void solve(const HarmonicProblem<DIM>& harmonicProblem) final;
  
      std::map<typename DGMaxDiscretization<DIM>::NormType, double> computeError(
          const typename std::set<typename DGMaxDiscretization<DIM>::NormType>&
              norms,
          const typename DGMaxDiscretization<DIM>::InputFunction& exactSolution,
          const typename DGMaxDiscretization<DIM>::InputFunction&
              exactSolutionCurl);
  
      std::map<typename DGMaxDiscretization<DIM>::NormType, double> computeError(
          const std::set<typename DGMaxDiscretization<DIM>::NormType>& norms,
          const ExactHarmonicProblem<DIM>& problem);
  
      double computeL2Error(const ExactHarmonicProblem<DIM>& problem) final {
          return computeError({DGMaxDiscretizationBase::NormType::L2},
                              problem)[DGMaxDiscretizationBase::NormType::L2];
      }
  
      void writeTec(std::string fileName) const;
      void writeVTK(Output::VTKSpecificTimeWriter<DIM>& output) const final;
  
     private:
      Base::MeshManipulator<DIM>& mesh_;
      DGMaxDiscretization<DIM> discretization;
      double stab_;
  };
  
  #endif  // HPGEM_APP_DGMAXHARMONIC_H
  