Partitionneur_Fichier_Decoupage.cpp

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#include <Partitionneur_Fichier_Decoupage.h>
#include <EFichier.h>
#include <Domaine.h>
#include <Param.h>
 
Implemente_instanciable(Partitionneur_Fichier_Decoupage,"Partitionneur_Fichier_Decoupage",Partitionneur_base);
// XD partitionneur_fichier_decoupage partitionneur_deriv fichier_decoupage INHERITS_BRACE This algorithm reads an array
// XD_CONT of integer values on the disc, one value for each mesh element. Each value is interpreted as the target part
// XD_CONT number n>=0 for this element. The number of parts created is the highest value in the array plus one. Empty
// XD_CONT parts can be created if some values are not present in the array. NL2 The file format is ASCII, and contains
// XD_CONT space, tab or carriage-return separated integer values. The first value is the number nb_elem of elements in
// XD_CONT the domain, followed by nb_elem integer values (positive or zero). NL2 This algorithm has been designed to
// XD_CONT work together with the \'ecrire_decoupage\' option. You can generate a partition with any other algorithm,
// XD_CONT write it to disc, modify it, and read it again to generate the .Zone files. NL2 Contrary to other
// XD_CONT partitioning algorithms, no correction is applied by default to the partition (eg. element 0 on processor 0
// XD_CONT and corrections for periodic boundaries). If \'corriger_partition\' is specified, these corrections are
// XD_CONT applied.
 
 
Sortie& Partitionneur_Fichier_Decoupage::printOn(Sortie& os) const
{
  Cerr << "Partitionneur_Metis::printOn invalid\n" << finl;
  exit();
  return os;
}
 
/*! @brief Reads the partitioner parameters from disk.
 *
 * Expected format:
 *     { fichier FILENAME }
 *   FILENAME is the name of an existing file in ArrOfInt ASCII format.
 *
 */
void Partitionneur_Fichier_Decoupage::set_param(Param& param) const
{
  param.ajouter("fichier",&filename_,Param::REQUIRED);            // XD attr fichier chaine fichier REQ File name
  param.ajouter_flag("corriger_partition",&corriger_partition_);  // XD attr corriger_partition rien corriger_partition OPT not_set
}
 
void Partitionneur_Fichier_Decoupage::associer_domaine(const Domaine& domaine)
{
  ref_domaine_ = domaine;
}
 
void Partitionneur_Fichier_Decoupage::initialiser(const char *filename)
{
  filename_ = filename;
}
 
/*! @brief Reads the content of "filename_" and stores the result in elem_part.
 *
 */
void Partitionneur_Fichier_Decoupage::construire_partition(IntVect& elem_part, int& nb_parts_tot) const
{
  if (!ref_domaine_)
    {
      Cerr << "Error in Partitionneur_Fichier_Decoupage::construire_partition\n";
      Cerr << " The domain has not been associated" << finl;
      exit();
    }
  if (filename_ == "")
    {
      Cerr << "Error in Partitionneur_Fichier_Decoupage::construire_partition\n";
      Cerr << " The file name has not been initialized" << finl;
      exit();
    }
 
  Cerr << "Reading of splitting file : " << filename_ << finl;
  EFichier file;
  file.ouvrir(filename_);
  if (!file.good())
    {
      Cerr << "Error in Partitionneur_Fichier_Decoupage::construire_partition\n";
      Cerr << " Failed to open file " << filename_ << finl;
      exit();
    }
  file >> elem_part;
  file >> nb_parts_tot;
  file.close();
  const int sz = elem_part.size_array();
  const int nelem = ref_domaine_->nb_elem();
  if (nelem != sz)
    {
      Cerr << "Error in Partitionneur_Fichier_Decoupage::construire_partition\n";
      Cerr << " The file contains an array of " << sz << " values.\n";
      Cerr << " The area contains " << nelem << " elements" << finl;
      exit();
    }
  if (corriger_partition_)
    {
      Cerr << " Correction of the partition." << finl;
      if (ref_domaine_->bords_perio().size() > 0)
        corriger_bords_avec_liste(ref_domaine_.valeur(),
                                  0,
                                  elem_part);
      corriger_elem0_sur_proc0(elem_part);
    }
}