UsesCase_MEDfield_9.c

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00001 /*  This file is part of MED.
00002  *
00003  *  COPYRIGHT (C) 1999 - 2015  EDF R&D, CEA/DEN
00004  *  MED is free software: you can redistribute it and/or modify
00005  *  it under the terms of the GNU Lesser General Public License as published by
00006  *  the Free Software Foundation, either version 3 of the License, or
00007  *  (at your option) any later version.
00008  *
00009  *  MED is distributed in the hope that it will be useful,
00010  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  *  GNU Lesser General Public License for more details.
00013  *
00014  *  You should have received a copy of the GNU Lesser General Public License
00015  *  along with MED.  If not, see <http://www.gnu.org/licenses/>.
00016  */
00017 
00018 #include <med.h>
00019 #define MESGERR 1
00020 #include <med_utils.h>
00021 
00022 #include <string.h>
00023 
00024 #include <med.h>
00025 #define MESGERR 1
00026 #include <med_utils.h>
00027 
00028 #include <string.h>
00029 
00030 /* 
00031  * Field use case 9 : read a field with computing steps and profiles (generic approach)
00032  */
00033 
00034 
00035 int main (int argc, char **argv) {
00036   med_idt fid;
00037   med_idt nfield, i, j;
00038   char meshname[MED_NAME_SIZE+1]="";
00039   med_bool localmesh;
00040   char fieldname[MED_NAME_SIZE+1]="";
00041   med_field_type fieldtype;
00042   char *componentname = NULL;
00043   char *componentunit = NULL;
00044   char dtunit[MED_SNAME_SIZE+1]="";
00045   med_float *values = NULL;
00046   med_int nstep, nvalues;
00047   med_int ncomponent;
00048   med_int csit, numit, numdt, it;
00049   med_float dt;
00050   med_geometry_type geotype;
00051   med_geometry_type *geotypes = MED_GET_CELL_GEOMETRY_TYPE;
00052   med_int nprofile, pit, profilesize;
00053   char profilename[MED_NAME_SIZE+1]="";
00054   med_int nintegrationpoint;
00055   char localizationname[MED_NAME_SIZE+1]="";
00056   int ret=-1;
00057 
00058   /* open file */
00059   fid = MEDfileOpen("UsesCase_MEDfield_7.med",MED_ACC_RDONLY);
00060   if (fid < 0) {
00061     MESSAGE("ERROR : open file ...");
00062     return -1;
00063   }
00064 
00065   /*
00066    * generic approach : how many fields in the file and identification
00067    * of each field.
00068    */
00069   if ((nfield = MEDnField(fid)) < 0) {
00070     MESSAGE("ERROR : How many fields in the file ...");
00071     return -1;
00072   }
00073 
00074   /* 
00075    * read values for each field
00076    */
00077   for (i=0; i<nfield; i++) {
00078 
00079     if ((ncomponent = MEDfieldnComponent(fid,i+1)) < 0) {
00080       MESSAGE("ERROR : number of field component ...");
00081       return -1;
00082     }
00083     
00084     if ((componentname = (char *) malloc(ncomponent*MED_SNAME_SIZE+1)) == NULL) {
00085       MESSAGE("ERROR : memory allocation ...");
00086       return -1;
00087     }
00088 
00089     if ((componentunit = (char *) malloc(ncomponent*MED_SNAME_SIZE+1)) == NULL) {
00090       MESSAGE("ERROR : memory allocation ...");
00091       return -1;
00092     }    
00093 
00094     if (MEDfieldInfo(fid, i+1, fieldname, meshname, &localmesh, &fieldtype,
00095                      componentname, componentunit, dtunit, &nstep) < 0) {
00096       MESSAGE("ERROR : Field info ...");
00097       free(componentname);
00098       free(componentunit);
00099       return -1;
00100     }
00101 
00102     free(componentname);
00103     free(componentunit);
00104 
00105     /*
00106      * Read field values for each computing step 
00107      */ 
00108     for (csit=0; csit<nstep; csit++) {
00109 
00110       if (MEDfieldComputingStepInfo(fid, fieldname, csit+1, &numdt, &numit, &dt) < 0) {
00111         MESSAGE("ERROR : Computing step info ...");
00112         return -1;
00113       }
00114 
00115       /* 
00116        * ... In our case, we suppose that the field values are only defined on cells ... 
00117        */
00118       for (it=1; it<=MED_N_CELL_FIXED_GEO; it++) {
00119 
00120         geotype = geotypes[it];
00121         /*
00122          * How many profile for each geometry type ? 
00123          */
00124         if ((nprofile = MEDfieldnProfile(fid, fieldname, numdt, numit, MED_CELL, geotype,
00125                                          profilename, localizationname)) < 0) {
00126           MESSAGE("ERROR : read number of profile ");
00127           return -1;
00128         }
00129 
00130         /* 
00131          * Read values for each profile
00132          * We suppose that we have no localization name 
00133          */
00134         for (pit=0; pit<nprofile; pit++) {
00135           
00136           if ((nvalues = MEDfieldnValueWithProfile(fid, fieldname, numdt, numit, MED_CELL, geotype,
00137                                                    pit+1, MED_COMPACT_PFLMODE, profilename, &profilesize,
00138                                                    localizationname, &nintegrationpoint)) < 0) {
00139             MESSAGE("ERROR : read number of values with a profile ...");
00140             return -1;
00141           } 
00142           
00143           if (nvalues) {
00144             if ((values = (med_float *) malloc(sizeof(med_float)*nvalues*ncomponent)) == NULL) {
00145               MESSAGE("ERROR : memory allocation ...");
00146               return -1;
00147             }
00148             if (MEDfieldValueWithProfileRd(fid, fieldname, numdt, numit, MED_CELL, geotype,
00149                                            MED_COMPACT_PFLMODE, profilename, 
00150                                            MED_FULL_INTERLACE, MED_ALL_CONSTITUENT, (unsigned char*)values) < 0) {
00151               MESSAGE("ERROR : read fields values for cells ..."); 
00152               free(values);
00153               return -1; 
00154             }  
00155 
00156             free(values);
00157           }
00158         }
00159       }
00160     }
00161   }
00162 
00163   ret=0;
00164  ERROR:
00165   
00166   /* close file */
00167   if (MEDfileClose(fid) < 0) {
00168     MESSAGE("ERROR : close file ...");             
00169     ret=-1; 
00170   } 
00171   
00172   return ret;
00173 }

Généré le Thu Oct 8 14:26:17 2015 pour MED fichier par  doxygen 1.6.1