Champ_front_t.cpp

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//   New boundary field
 
#include <Champ_front_t.h>
#include <Domaine.h>
#include <Frontiere_dis_base.h>
#include <Domaine_VF.h>
#include <TRUSTTrav.h>
 
Implemente_instanciable(Champ_front_t,"Champ_front_fonc_t",Ch_front_var_instationnaire_indep);
// XD champ_front_fonc_t front_field_base champ_front_fonc_t NO_BRACE Boundary field that depends only on time.
// XD attr val listchaine val REQ Values of field components (mathematical expressions).
 
 
/*! @brief Print the field to an output stream.
 *
 * Prints the field size and the (constant) value on
 *     the boundary.
 *
 * @param (Sortie& os) an output stream
 * @return (Sortie&) the modified output stream
 */
Sortie& Champ_front_t::printOn(Sortie& os) const
{
 
  const DoubleTab& tab=valeurs();
  os << tab.size() << " ";
  for(int i=0; i<tab.size(); i++)
    os << tab(0,i);
  return os;
}
 
 
/*! @brief Read the field from an input stream.
 *
 * Format:
 *       Champ_front_t nb_compo vrel_1 ... [vrel_i]
 *
 * @param (Entree& is) an input stream
 * @return (Entree& is) the modified input stream
 */
Entree& Champ_front_t::readOn(Entree& is)
{
  int dim;
  dim=lire_dimension(is,que_suis_je());
  fixer_nb_comp(dim);
 
  f_t.dimensionner(dim);
 
 
  for (int i = 0; i<dim; i++)
    {
      Nom tmp;
      is >> tmp;
      Cerr << "Reading and interpretation of the function " << tmp << finl;
      f_t[i].setNbVar(1);
      f_t[i].setString(tmp);
      f_t[i].addVar("t");
      f_t[i].parseString();
      Cerr << "Interpretation of function " << tmp << " Ok" << finl;
    }
 
  return is;
}
 
 
 
/*! @brief Returns the object upcast to Champ_front_base&
 *
 * @param (Champ_front_base& ch)
 * @return (Champ_front_base&) (*this) upcast to Champ_front_base&
 */
Champ_front_base& Champ_front_t::affecter_(const Champ_front_base& ch)
{
  return *this;
}
 
 
void Champ_front_t::mettre_a_jour(double temps)
{
  int dim=nb_comp();
  const Frontiere_dis_base& fr_dis=frontiere_dis();
  int nb_faces=ref_cast(Front_VF, fr_dis).nb_faces();
  int i,k;
  DoubleTab& tab=valeurs_au_temps(temps);
  for( i=0; i<nb_faces; i++)
    {
      for( k=0; k<dim; k++)
        {
          f_t[k].setVar("t",temps);
          tab(i,k)=f_t[k].eval();
        }
    }
  tab.echange_espace_virtuel();
}
 
double Champ_front_t::valeur_au_temps(double temps,int som, int k) const
{
  Parser_U& f_tk=f_t[k];
  f_tk.setVar("t",temps);
  return f_tk.eval();
}