Champ_front_ALE_lag.cpp

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#include <Champ_front_ALE_lag.h>
#include <Champ_base.h>
#include <Frontiere_dis_base.h>
#include <Interprete.h>
#include <Probleme_base.h>
 
#ifdef MEDCOUPLING_
#include <medcoupling++.h>
#include <MEDCouplingMemArray.hxx>
using namespace MEDCoupling;
#endif
 
Implemente_instanciable(Champ_front_ALE_lag, "Champ_front_ALE_lag", Champ_front_ALE);
// XD Champ_front_ALE_lag front_field_base Champ_front_ALE_lag NO_BRACE Boundary field that fetches ALE nodal velocities
// XD_CONT from an external Lagrangian velocity field. NL2 Example: Champ_front_ALE_lag pb_vitesse champ_vitesse
 
Entree& Champ_front_ALE_lag::readOn(Entree& is)
{
  is >> external_pb_name_ >> external_field_name_;
  fixer_nb_comp(dimension);
  return is;
}
 
Sortie& Champ_front_ALE_lag::printOn(Sortie& os) const
{
  os << external_pb_name_ << " " << external_field_name_;
  return os;
}
 
const Probleme_base& Champ_front_ALE_lag::external_problem() const
{
  if (external_pb_name_ == "??")
    {
      Cerr << "Champ_front_ALE_lag : aucun probleme externe n'a ete specifie." << finl;
      Process::exit();
    }
  return ref_cast(Probleme_base, interprete().objet(external_pb_name_));
}
 
const Champ_base& Champ_front_ALE_lag::external_field(const Probleme_base& pb) const
{
  if (external_field_name_ == "??")
    {
      Cerr << "Champ_front_ALE_lag : aucun champ externe n'a ete specifie." << finl;
      Process::exit();
    }
  if (!pb.has_champ(external_field_name_))
    {
      Cerr << "Champ_front_ALE_lag : le probleme " << pb.le_nom()
           << " ne contient pas de champ " << external_field_name_ << finl;
      Process::exit();
    }
  return pb.get_champ(external_field_name_);
}
 
void Champ_front_ALE_lag::check_external_field(const Champ_base& champ) const
{
  const DoubleTab& valeurs = champ.valeurs();
  if (valeurs.line_size() != nb_comp())
    {
      Cerr << "Champ_front_ALE_lag : le champ externe " << champ.le_nom()
           << " doit avoir " << nb_comp() << " composantes par sommet (line_size="
           << valeurs.line_size() << ")." << finl;
      Process::exit();
    }
}
 
void Champ_front_ALE_lag::build_vertex_mapping(const Domaine& ale_dom, const Domaine& ext_dom)
{
#ifndef MEDCOUPLING_
  Cerr << "Champ_front_ALE_lag : MEDCoupling est requis pour utiliser un champ lagrangien externe." << finl;
  Process::exit();
#else
  const DoubleTab& ext_coords = ext_dom.les_sommets();
  const DoubleTab& ale_coords = ale_dom.les_sommets();
 
  const int dim = dimension;
  const int nb_ext = ext_coords.dimension(0);
  const int nb_ale = ale_coords.dimension(0);
 
  MCAuto<DataArrayDouble> ext_pts(DataArrayDouble::New());
  MCAuto<DataArrayDouble> ale_pts(DataArrayDouble::New());
  ext_pts->alloc(nb_ext, dim);
  ale_pts->alloc(nb_ale, dim);
 
  double * ext_ptr = ext_pts->getPointer();
  for (int i = 0; i < nb_ext; i++)
    for (int d = 0; d < dim; d++)
      ext_ptr[i * dim + d] = ext_coords(i, d);
 
  double * ale_ptr = ale_pts->getPointer();
  for (int i = 0; i < nb_ale; i++)
    for (int d = 0; d < dim; d++)
      ale_ptr[i * dim + d] = ale_coords(i, d);
 
  MCAuto<DataArrayIdType> closest(ext_pts->findClosestTupleId(ale_pts));
  external_vertex_id_for_ale_vertex_.resize(nb_ale);
  external_vertex_id_for_ale_vertex_ = -1;
  for (int i = 0; i < nb_ale; i++)
    external_vertex_id_for_ale_vertex_[i] = static_cast<int>(closest->getIJ(i, 0));
  mapping_initialized_ = true;
  mapping_size_ = nb_ale;
#endif
}
 
void Champ_front_ALE_lag::remplir_vit_som_bord_ALE(double tps)
{
#ifndef MEDCOUPLING_
  Cerr << "Champ_front_ALE_lag::remplir_vit_som_bord_ALE : MEDCoupling est requis pour utiliser un champ lagrangien externe." << finl;
  Process::exit();
#else
  (void)tps;
  const Probleme_base& pb = external_problem();
  const Champ_base& champ = external_field(pb);
  check_external_field(champ);
 
  const Frontiere& front = la_frontiere_dis->frontiere();
  const Domaine& domaine = front.domaine();
  const Domaine& external_dom = pb.domaine();
  const DoubleTab& valeurs = champ.valeurs();
 
  if (valeurs.dimension(0) != external_dom.nb_som())
    {
      Cerr << "Champ_front_ALE_lag : le champ " << champ.le_nom()
           << " contient " << valeurs.dimension(0) << " sommets alors que le domaine "
           << external_dom.le_nom() << " en possede " << external_dom.nb_som() << "." << finl;
      Process::exit();
    }
 
  if (!mapping_initialized_ || mapping_size_ != domaine.nb_som())
    build_vertex_mapping(domaine, external_dom);
 
  const int nb_som_tot = domaine.nb_som_tot();
  vit_som_bord_ALE.resize(nb_som_tot, nb_comp());
  vit_som_bord_ALE = 0.;
 
  const IntTab& faces_som = front.faces().les_sommets();
  const int nb_faces = faces_som.dimension(0);
  const int nb_som_face = faces_som.dimension(1);
  for (int f = 0; f < nb_faces; f++)
    for (int k = 0; k < nb_som_face; k++)
      {
        const int som = faces_som(f, k);
        if (som < 0) continue;
        const int ext = external_vertex_id_for_ale_vertex_[som];
        if (ext < 0) continue;
        for (int comp = 0; comp < nb_comp(); comp++)
          vit_som_bord_ALE(som, comp) = valeurs(ext, comp);
      }
#endif
}