# c/test6.c

    /*  This file is part of MED.
     *
     *  COPYRIGHT (C) 1999 - 2012  EDF R&D, CEA/DEN
     *  MED is free software: you can redistribute it and/or modify
     *  it under the terms of the GNU Lesser General Public License as published by
     *  the Free Software Foundation, either version 3 of the License, or
     *  (at your option) any later version.
     *
     *  MED is distributed in the hope that it will be useful,
     *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     *  GNU Lesser General Public License for more details.
     *
     *  You should have received a copy of the GNU Lesser General Public License
     *  along with MED.  If not, see <http://www.gnu.org/licenses/>.
     */

    /******************************************************************************
     * - Nom du fichier : test6.c
     *
     * - Description : ecriture d'elements dans un maillage MED
     *
     *****************************************************************************/

    #include <med.h>
    #define MESGERR 1
    #include <med_utils.h>

    #ifdef DEF_LECT_ECR
    #define MODE_ACCES MED_ACC_RDWR
    #elif DEF_LECT_AJOUT
    #define MODE_ACCES MED_ACC_RDEXT
    #else
    #define MODE_ACCES MED_ACC_CREAT
    #endif

    int main (int argc, char **argv)

    {
      med_idt fid;
      med_int nse2 = 5;
      med_int se2[10] = {1,2,1,3,2,4,3,4,2,3};
      /*                                12345678901234561234567890123456123456789012345612345678901234561234567890123456*/
      char nomse2[MED_SNAME_SIZE*5+1]="se1             se2             se3             se4             se5             ";
      med_int numse2[5] = {1,2,3,4,5};
      med_int nufase2[5] = {-1,-1,0,-2,-3};
      med_int ntr3 = 2;
      med_int tr3[6] = {1,2,-5,-5,3,-4};
      /*                                  12345678901234561234567890123456*/
      char nomtr3[MED_SNAME_SIZE*2+1] = "tr1             tr2             ";
      med_int numtr3[2] = {4,5};
      med_int nufatr3[2] = {0,-1};
      char maa[MED_NAME_SIZE+1] = "maa1";
      med_int mdim = 2;
      char nomcoo[2*MED_SNAME_SIZE+1] = "x               y               ";
      char unicoo[2*MED_SNAME_SIZE+1] = "cm              cm              ";

      /* ouverture du fichier */
      if ((fid = MEDfileOpen("test6.med",MODE_ACCES)) < 0) {
        MESSAGE("Impossible de creer le fichier test6.med : ");
        return -1;
      }

      if (MEDmeshCr( fid, maa, mdim, mdim, MED_UNSTRUCTURED_MESH,
                     "un maillage pour test6","s", MED_SORT_DTIT,
                     MED_CARTESIAN, nomcoo, unicoo) < 0) {
        MESSAGE("Erreur a la creation du maillage : "); SSCRUTE(maa);
        return -1;
      }

      /* ecriture des connectivites des segments */
      if ( MEDmeshElementConnectivityWr(fid,maa, MED_NO_DT, MED_NO_IT, MED_UNDEF_DT,
                                        MED_DESCENDING_EDGE, MED_SEG2, MED_DESCENDING,
                                        MED_FULL_INTERLACE, nse2,se2) < 0 ) {
        MESSAGE("Impossible d'ecrire la connectivité des segments: ");
        return -1;
      }

      /* ecriture (optionnelle) des noms des segments */
       if (MEDmeshEntityNameWr(fid,maa,MED_NO_DT,MED_NO_IT,
                               MED_DESCENDING_EDGE,MED_SEG2,nse2,nomse2) < 0) {
        MESSAGE("Erreur a l'ecriture des noms des segments");
        return -1;
      }

      /* ecriture (optionnelle) des numeros des segments */
      if (MEDmeshEntityNumberWr(fid,maa,MED_NO_DT,MED_NO_IT,
                                MED_DESCENDING_EDGE,MED_SEG2,nse2,numse2) < 0) {
        MESSAGE("Erreur a l'ecriture des numeros des segments");
        return -1;
      }

      /* ecriture des numeros des familles des segments */
      if (MEDmeshEntityFamilyNumberWr(fid,maa,MED_NO_DT,MED_NO_IT,
                                      MED_DESCENDING_EDGE,MED_SEG2,nse2,nufase2) < 0) {
        MESSAGE("Erreur a l'ecriture des numeros de familles des segments");
        return -1;
      }

      /* ecriture des connectivites des triangles */
      if ( MEDmeshElementConnectivityWr(fid,maa, MED_NO_DT, MED_NO_IT, MED_UNDEF_DT,
                                        MED_CELL, MED_TRIA3, MED_DESCENDING,
                                        MED_FULL_INTERLACE, ntr3,tr3) < 0 ) {
        MESSAGE("Impossible d'ecrire la connectivité des triangles : ");
        return -1;
      }

      /* ecriture (optionnelle) des noms des triangles */
       if (MEDmeshEntityNameWr(fid,maa,MED_NO_DT,MED_NO_IT,
                               MED_CELL, MED_TRIA3,ntr3,nomtr3) < 0) {
        MESSAGE("Erreur a l'ecriture des noms des triangles");
        return -1;
      }

      /* ecriture (optionnelle) des numeros des triangles */
      if (MEDmeshEntityNumberWr(fid,maa,MED_NO_DT,MED_NO_IT,
                                MED_CELL, MED_TRIA3,ntr3,numtr3) < 0) {
        MESSAGE("Erreur a l'ecriture des numeros des triangles");
        return -1;
      }

      /* ecriture des numeros des familles des triangles */
      if (MEDmeshEntityFamilyNumberWr(fid,maa,MED_NO_DT,MED_NO_IT,
                                      MED_CELL, MED_TRIA3,ntr3,nufatr3) < 0) {
        MESSAGE("Erreur a l'ecriture des numeros de familles des triangles");
        return -1;
      }

      /* fermeture du fichier */
      if ( MEDfileClose(fid) < 0 ) {
        MESSAGE("Impossible de fermerle fichier : ");
        return -1;
      }

      return 0;

    }