Champ_Fonc_Quad_DG.cpp

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#include <Champ_Fonc_Quad_DG.h>
#include <Domaine_DG.h>
#include <Quadrature_base.h>
 
Implemente_instanciable(Champ_Fonc_Quad_DG, "Champ_Fonc_Quad_DG", Champ_Fonc_P0_base);
 
Sortie& Champ_Fonc_Quad_DG::printOn(Sortie& s) const { return s << que_suis_je() << " " << le_nom(); }
 
Entree& Champ_Fonc_Quad_DG::readOn(Entree& s) { return s; }
 
Champ_base& Champ_Fonc_Quad_DG::affecter_(const Champ_base& ch)
{
  const Domaine_DG& domaine = ref_cast(Domaine_DG, le_dom_VF.valeur());
 
  const Quadrature_base& quad = domaine.get_quadrature(5);
  const DoubleTab& integ_points = quad.get_integ_points();
  int nb_elem = domaine.nb_elem();
 
  int dim = 1;
  if (nature_du_champ() == Nature_du_champ::quadrature_vectoriel) dim = Objet_U::dimension;
 
  DoubleTab values(integ_points.dimension(0),dim);
 
  ch.valeur_aux(integ_points, values);
 
  const int nb_pts_quad_max = quad.nb_pts_integ_max();
 
  for (int num_elem = 0; num_elem < nb_elem; num_elem++)
    for (int k = 0; k < quad.nb_pts_integ(num_elem) ; k++)
      for (int d = 0; d<dim; d++)
        valeurs_(num_elem,k + nb_pts_quad_max*d) = values(quad.ind_pts_integ(num_elem)+k, d);
 
  return *this;
}
 
DoubleTab& Champ_Fonc_Quad_DG::valeur_aux_elems(const DoubleTab& positions, const IntVect& polys, DoubleTab& result) const
{
 
  const Domaine_DG& domaine = ref_cast(Domaine_DG,le_dom_VF.valeur());
 
  const DoubleVect& volume = domaine.volumes();
 
  const Quadrature_base& quad = domaine.get_quadrature(5);
  int nb_pts_integ_max = quad.nb_pts_integ_max();
 
  const DoubleTab& values = le_champ().valeurs();
  int nb_polys = polys.size();
 
  if (nb_polys == 0)
    return result;
 
  int dim = 1;
  if (nature_ == quadrature_vectoriel) dim = Objet_U::dimension;
  ToDo_Kokkos("critical");
 
  DoubleTab value_pts(nb_pts_integ_max);
 
  for (int i = 0; i < nb_polys; i++)
    {
      int cell = polys(i);
      assert(cell < values.dimension_tot(0));
 
      if (cell != -1)
        {
          for (int j=0; j<dim; j++)
            {
              for (int k=0; k<quad.nb_pts_integ(cell); k++)
                value_pts(k) = values(cell,j*nb_pts_integ_max + k);
//          value_pts.ref_tab(values,cell,1); //pb de const
 
              result(i,j) = quad.compute_integral_on_elem(cell, value_pts);
              result(i,j) /= volume(cell);
            }
        }
    }
 
  return result;
 
}