onestep/patternengine.hh

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#ifndef DUNE_PDELAB_GRIDOPERATOR_ONESTEP_PATTERNENGINE_HH
#define DUNE_PDELAB_GRIDOPERATOR_ONESTEP_PATTERNENGINE_HH
 
#include <dune/pdelab/gridoperator/common/assemblerutilities.hh>
#include <dune/pdelab/gridoperator/onestep/enginebase.hh>
 
namespace Dune{
  namespace PDELab{
 
    template<typename OSLA>
    class OneStepLocalPatternAssemblerEngine
      : public OneStepLocalAssemblerEngineBase<OSLA,
                                               typename OSLA::LocalAssemblerDT0::LocalPatternAssemblerEngine,
                                               typename OSLA::LocalAssemblerDT1::LocalPatternAssemblerEngine
                                               >
    {
 
      typedef OneStepLocalAssemblerEngineBase<OSLA,
                                              typename OSLA::LocalAssemblerDT0::LocalPatternAssemblerEngine,
                                              typename OSLA::LocalAssemblerDT1::LocalPatternAssemblerEngine
                                              > BaseT;
 
      using BaseT::la;
      using BaseT::lae0;
      using BaseT::lae1;
      using BaseT::implicit;
      using BaseT::setLocalAssemblerEngineDT0;
      using BaseT::setLocalAssemblerEngineDT1;
 
    public:
      typedef OSLA LocalAssembler;
 
      typedef typename OSLA::LocalAssemblerDT0 LocalAssemblerDT0;
      typedef typename OSLA::LocalAssemblerDT1 LocalAssemblerDT1;
 
      typedef typename LocalAssembler::Traits::MatrixPattern Pattern;
      typedef Dune::PDELab::LocalSparsityPattern LocalPattern;
 
      OneStepLocalPatternAssemblerEngine(const LocalAssembler & la_)
        : BaseT(la_)
        , invalid_pattern(nullptr)
        , pattern(invalid_pattern)
      {}
 
      void setPattern(Pattern & pattern_)
      {
 
        // Set pointer to global pattern
        pattern = &pattern_;
 
        // Initialize the engines of the two wrapped local assemblers
        setLocalAssemblerEngineDT0(la.la0.localPatternAssemblerEngine(pattern_));
        setLocalAssemblerEngineDT1(la.la1.localPatternAssemblerEngine(pattern_));
      }
 
 
      void preAssembly()
      {
        implicit = la.osp_method->implicit();
 
        lae0->preAssembly();
        lae1->preAssembly();
      }
 
      template<typename GFSU, typename GFSV>
      void postAssembly(const GFSU& gfsu, const GFSV& gfsv)
      {
        lae0->postAssembly(gfsu,gfsv);
        lae1->postAssembly(gfsu,gfsv);
      }
 
    private:
 
      Pattern * const invalid_pattern;
 
      Pattern * pattern;
 
    }; // End of class OneStepLocalPatternAssemblerEngine
 
  }
}
 
#endif // DUNE_PDELAB_GRIDOPERATOR_ONESTEP_PATTERNENGINE_HH