Ensemble_Lagrange_base.cpp

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#include <Ensemble_Lagrange_base.h>
#include <Sous_Domaine.h>
#include <Domaine.h>
#include <communications.h>
Implemente_base_sans_constructeur(Ensemble_Lagrange_base,"Ensemble_Lagrange_base",Objet_U);
 
Ensemble_Lagrange_base::Ensemble_Lagrange_base()
{
  nb_marqs_sz.resize(0);
  nb_marqs_par_dir.resize(0,0);
}
 
Sortie& Ensemble_Lagrange_base::printOn(Sortie& os) const
{
  return os;
}
 
Entree& Ensemble_Lagrange_base::readOn(Entree& is)
{
  return is;
}
 
void Ensemble_Lagrange_base::associer_domaine(const Domaine& un_domaine)
{
  mon_dom_=un_domaine;
}
 
void Ensemble_Lagrange_base::remplir_sommets_tmp(DoubleTab& soms_tmp)
{
  //First case: the vertices were read from a file
  //Copy sommets_lu_ into a temporary array sommets_tmp
 
  if (sommets_lu_.dimension(0)!=0)
    {
      const DoubleTab& som_lu = sommets_lu() ;
      int dim0=som_lu.dimension(0);
      int dim1=som_lu.dimension(1);
      soms_tmp.resize(dim0,dim1);
      soms_tmp = som_lu;
    }
  else if (nb_marqs_par_sz().size()!=0)
    //Second case: the vertices are created in sub-domains
    //Fill the temporary array
    generer_marqueurs_sz(soms_tmp);
  else
    soms_tmp.resize(0,0);
}
 
//Generation of particle coordinates over one or several sub-domains
//For each sub-domain:
// - Step 1: determine the min and max for x, y and z, taking all processors into account
// - Step 2: the master processor computes the particle coordinates
//                -either with a uniform distribution
//                -or with a random distribution
// - Step 3: the master processor sends the computed coordinate values to the other processors
 
void Ensemble_Lagrange_base::generer_marqueurs_sz(DoubleTab& soms_tmp)
{
  const Domaine& madomaine = mon_dom_.valeur();
  const Domaine& dom = madomaine;
  int nb_sz,nb_marq_sz, old_size, dim;
  soms_tmp.resize(0);
  dim=Objet_U::dimension;
  nb_sz=nb_marqs_sz.size();
 
  for (int i=0; i<nb_sz; i++)
    {
      const Nom& nom = nom_sz[i];
      const Sous_Domaine& sz = dom.ss_domaine(nom);
      int nb_elem = sz.nb_elem_tot();
 
      int nb_som = madomaine.nb_som_elem();
      int le_poly,poly,le_som;
 
      double xmoy,ymoy,zmoy,deltax,deltay,deltaz;
      double xmin,xmax,ymin,ymax,zmin,zmax;
      xmin = ymin = zmin = 1.e8;
      xmax = ymax = zmax= -1.e8;
 
      if (dim==2)
        {
          zmin = zmax = 0.;
        }
 
      //Step 1: determine the min and max taking all processors into account
      if (nb_elem!=0)
        {
          poly = sz(0);
          le_som = 0;
 
          xmin=dom.coord(madomaine.sommet_elem(poly,le_som),0);
          ymin=dom.coord(madomaine.sommet_elem(poly,le_som),1);
          if (dim==3)
            zmin=dom.coord(madomaine.sommet_elem(poly,le_som),2);
          xmax=xmin;
          ymax=ymin;
          if (dim==3)
            zmax=zmin;
 
          for (le_poly=0; le_poly<nb_elem; le_poly++)
            for(le_som=0; le_som<nb_som; le_som++)
              {
                poly = sz(le_poly);
                xmin=std::min(xmin,dom.coord(madomaine.sommet_elem(poly,le_som),0));
                ymin=std::min(ymin,dom.coord(madomaine.sommet_elem(poly,le_som),1));
                if (dim==3)
                  zmin=std::min(zmin,dom.coord(madomaine.sommet_elem(poly,le_som),2));
                xmax=std::max(xmax,dom.coord(madomaine.sommet_elem(poly,le_som),0));
                ymax=std::max(ymax,dom.coord(madomaine.sommet_elem(poly,le_som),1));
                if (dim==3)
                  zmax=std::max(zmax,dom.coord(madomaine.sommet_elem(poly,le_som),2));
              }
        } //End if (nb_elem!=0)
 
 
      xmin = Process::mp_min(xmin);
      xmax = Process::mp_max(xmax);
      ymin = Process::mp_min(ymin);
      ymax = Process::mp_max(ymax);
      if (dim==3)
        {
          zmin = Process::mp_min(zmin);
          zmax = Process::mp_max(zmax);
        }
 
      //Step 2: the master processor will compute the particle coordinates
      if (je_suis_maitre())
        {
 
          xmoy = (xmax+xmin)/2.;
          ymoy = (ymax+ymin)/2.;
          zmoy = (zmax+zmin)/2.;
 
          deltax = (xmax-xmin)/2.;
          deltay = (ymax-ymin)/2.;
          deltaz = (zmax-zmin)/2.;
 
          nb_marq_sz = nb_marqs_sz(i);
          old_size = soms_tmp.dimension(0);
          soms_tmp.resize(old_size+nb_marq_sz,dim);
          int marq;
 
          //Case of a random distribution
          if (nb_marqs_par_dir(i,0)==0)
            {
              //double a,b,c;
              srand48(1);
              for (marq=0; marq<nb_marq_sz; marq++)
                {
                  soms_tmp(old_size+marq,0) = xmoy + deltax*(-1.+2.*drand48());
                  soms_tmp(old_size+marq,1) = ymoy + deltay*(-1.+2.*drand48());
                  if (dim==3)
                    soms_tmp(old_size+marq,2) = zmoy + deltaz*(-1.+2.*drand48());
                }
            }
          //Case of a uniform distribution
          else
            {
              double dx, dy, dz;
              int nx_max = nb_marqs_par_dir(i,0);
              int ny_max = nb_marqs_par_dir(i,1);
              dx = 2.*deltax/double(nx_max+1);
              dy = 2.*deltay/double(ny_max+1);
 
              if (dim==2)
                {
                  for (int ny=1; ny<ny_max+1; ny++)
                    for (int nx=1; nx<nx_max+1; nx++)
                      {
                        marq = nx + (ny-1)*nx_max-1;
                        soms_tmp(old_size+marq,0) = xmin + nx*dx;
                        soms_tmp(old_size+marq,1) = ymin + ny*dy;
                      }
                }
              else if (dim==3)
                {
                  int nz_max = nb_marqs_par_dir(i,2);
                  dz = 2.*deltaz/double(nz_max+1);
                  for (int nz=1; nz<nz_max+1; nz++)
                    for (int ny=1; ny<ny_max+1; ny++)
                      for (int nx=1; nx<nx_max+1; nx++)
                        {
                          marq = nx + (ny-1)*nx_max + (nz-1)*nx_max*ny_max-1;
                          soms_tmp(old_size+marq,0) = xmin + nx*dx;
                          soms_tmp(old_size+marq,1) = ymin + ny*dy;
                          soms_tmp(old_size+marq,2) = zmin + nz*dz;
                        }
                }
            }
        }//End of if je_suis_maitre()
 
      //Step 3: the master processor sends the computed coordinate values (soms_tmp)
      //             to the other processors
      if (je_suis_maitre())
        for(int p=1; p<Process::nproc(); p++)
          envoyer(soms_tmp,0, p, 0);
      for(int p=1; p<Process::nproc(); p++)
        recevoir(soms_tmp,0,p,0);
    }
}