adapter.h

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/*
 * Copyright (c) 2022:  G-CSC, Goethe University Frankfurt
 * Authors: Arne Naegel
 * 
 * This file is part of UG4.
 * 
 * UG4 is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 3 (as published by the
 * Free Software Foundation) with the following additional attribution
 * requirements (according to LGPL/GPL v3 §7):
 * 
 * (1) The following notice must be displayed in the Appropriate Legal Notices
 * of covered and combined works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (2) The following notice must be displayed at a prominent place in the
 * terminal output of covered works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (3) The following bibliography is recommended for citation and must be
 * preserved in all covered files:
 * "Reiter, S., Vogel, A., Heppner, I., Rupp, M., and Wittum, G. A massively
 *   parallel geometric multigrid solver on hierarchically distributed grids.
 *   Computing and visualization in science 16, 4 (2013), 151-164"
 * "Vogel, A., Reiter, S., Rupp, M., Nägel, A., and Wittum, G. UG4 -- a novel
 *   flexible software system for simulating pde based models on high performance
 *   computers. Computing and visualization in science 16, 4 (2013), 165-179"
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 */
 
/*
 * andreasvogel used scale_add_linker ass template
 */
 
#ifndef __H__UG__LIB_DISC__SPATIAL_DISC__LINKER_ADAPTER__
#define __H__UG__LIB_DISC__SPATIAL_DISC__LINKER_ADAPTER__
 
#include "linker.h"
 
namespace ug{
 
 
template <int dim>
class UserVectorEntryAdapter
  : public StdDataLinker< UserVectorEntryAdapter<dim>, number, dim>
{
public:
    typedef StdDataLinker< UserVectorEntryAdapter<dim>, number, dim> base_type;
 
    typedef number data_type;
    typedef CplUserData<data_type, dim> user_data_base_type;
 
    typedef MathVector<dim> encapsulated_type;
    typedef CplUserData<encapsulated_type, dim> input_type;
 
  public:
 
    UserVectorEntryAdapter() :  m_index(0), m_spEncaps(NULL)
    {
      this->set_num_input(_INPUT_+1); //  this linker has one inoput
    }
    UserVectorEntryAdapter() :  m_index(0), m_spEncaps(NULL) {…}
 
 
    inline void evaluate (data_type& value,
                          const MathVector<dim>& globIP,
                          number time, int si) const
    {
      encapsulated_type dummy;
      (*m_spEncaps)(dummy, globIP, time, si);
      value = dummy[m_index];
    }
    inline void evaluate (data_type& value, {…}
 
    template <int refDim>
    inline void evaluate(data_type vValue[],
                         const MathVector<dim> vGlobIP[],
                         number time, int si,
                         GridObject* elem,
                         const MathVector<dim> vCornerCoords[],
                         const MathVector<refDim> vLocIP[],
                         const size_t nip,
                         LocalVector* u,
                         const MathMatrix<refDim, dim>* vJT = NULL) const
    {
        std::vector<encapsulated_type> dummy(nip);
 
 
        (*m_spEncaps)(&dummy[0], vGlobIP, time, si,
                elem, vCornerCoords, vLocIP, nip, u, vJT);
 
 
      for (size_t ip=0; ip<nip; ++ip)
      { vValue[ip] = dummy[ip][m_index]; }
    }
    inline void evaluate(data_type vValue[], {…}
 
    template <int refDim>
    void eval_and_deriv(data_type vValue[],
                        const MathVector<dim> vGlobIP[],
                        number time, int si,
                        GridObject* elem,
                        const MathVector<dim> vCornerCoords[],
                        const MathVector<refDim> vLocIP[],
                        const size_t nip,
                        LocalVector* u,
                        bool bDeriv,
                        int s,
                        std::vector<std::vector<data_type > > vvvDeriv[],
                        const MathMatrix<refDim, dim>* vJT = NULL) const
    {
      //  get the data of the ip series
      const encapsulated_type* vDummy = m_spEncaps->values(s);
 
      for(size_t ip = 0; ip < nip; ++ip)
      { vValue[ip] = vDummy[ip][m_index]; }
 
      //  check if something to do
      if(!bDeriv || this->zero_derivative()) return;
 
      //  clear all derivative values
      this->set_zero(vvvDeriv, nip);
 
      //  Derivatives w.r.t  input
      if( m_spDEncaps.invalid() || m_spDEncaps->zero_derivative()) return;
 
      // loop integration points
      for(size_t ip = 0; ip < nip; ++ip){
 
        // loop functions
        for(size_t fct = 0; fct < m_spDEncaps->num_fct(); ++fct)
        {
          //  get derivative of  w.r.t. to all functions
          const encapsulated_type* vDInputFct = m_spDEncaps->deriv(s, ip, fct);
 
          //  get common fct id for this function
          const size_t commonFct = this->input_common_fct(_INPUT_, fct);
 
          //  loop all shapes and set the derivative
          for(size_t sh = 0; sh < this->num_sh(commonFct); ++sh)
          {
            UG_ASSERT(commonFct < vvvDeriv[ip].size(), commonFct<<", "<<vvvDeriv[ip].size());
            vvvDeriv[ip][commonFct][sh] += vDInputFct[sh][m_index]; // TODO: double check this!
          }
 
        }
      }
 
    }
    void eval_and_deriv(data_type vValue[], {…}
 
  public:
    void set_vector(SmartPtr<input_type> data, size_t index)
    {
      m_spEncaps = data;  // for evaluation
      m_spDEncaps = data.template cast_dynamic<DependentUserData<encapsulated_type, dim> >(); // for derivatives
      base_type::set_input(_INPUT_, data, data);
      m_index = index;
    }
    void set_vector(SmartPtr<input_type> data, size_t index) {…}
 
 
 
  protected:
    size_t m_index;
 
    const static int _INPUT_= 0;
 
    SmartPtr<input_type> m_spEncaps;
    SmartPtr<DependentUserData<encapsulated_type, dim> > m_spDEncaps;
 
 
};
class UserVectorEntryAdapter {…};
 
} // namespace ug
 
#endif /*  __H__UG__LIB_DISC__SPATIAL_DISC__LINKER_ADAPTER__ */