MED fichier: usecases/c/UsesCase_MEDfield_14.c

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usecases/c/UsesCase_MEDfield_14.c
/* This file is part of MED.
*
* COPYRIGHT (C) 1999 - 2017 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/>.
*/
#include <med.h>
#define MESGERR 1
#include <med_utils.h>
#include <string.h>
#include <med.h>
#define MESGERR 1
#include <med_utils.h>
#include <string.h>
/*
* Field use case 14 : read a field on nodes elements (generic approach) in a MED file
*/
int main (int argc, char **argv) {
med_idt fid;
med_idt nfield, i, j;
char meshname[MED_NAME_SIZE+1]="";
med_bool localmesh;
char fieldname[MED_NAME_SIZE+1]="";
med_field_type fieldtype;
char *componentname = NULL;
char *componentunit = NULL;
char dtunit[MED_SNAME_SIZE+1]="";
med_float *values = NULL;
med_int nstep, nvalues;
med_int ncomponent;
med_int csit, numit, numdt, it;
med_float dt;
med_geometry_type geotype;
med_geometry_type *geotypes = MED_GET_CELL_GEOMETRY_TYPE;
med_int nprofile, pit, profilesize;
char profilename[MED_NAME_SIZE+1]="";
med_int nintegrationpoint;
char localizationname[MED_NAME_SIZE+1]="";
int k;
int ret=-1;
/* open file */
fid = MEDfileOpen("UsesCase_MEDfield_13.med",MED_ACC_RDONLY);
if (fid < 0) {
MESSAGE("ERROR : open file ...");
goto ERROR;
}
/*
* generic approach : how many fields in the file and identification
* of each field.
*/
if ((nfield = MEDnField(fid)) < 0) {
MESSAGE("ERROR : How many fields in the file ...");
goto ERROR;
}
/*
* read values for each field
*/
for (i=0; i<nfield; i++) {
if ((ncomponent = MEDfieldnComponent(fid,i+1)) < 0) {
MESSAGE("ERROR : number of field component ...");
goto ERROR;
}
if ((componentname = (char *) malloc(ncomponent*MED_SNAME_SIZE+1)) == NULL) {
MESSAGE("ERROR : memory allocation ...");
goto ERROR;
}
if ((componentunit = (char *) malloc(ncomponent*MED_SNAME_SIZE+1)) == NULL) {
MESSAGE("ERROR : memory allocation ...");
goto ERROR;
}
if (MEDfieldInfo(fid, i+1, fieldname, meshname, &localmesh, &fieldtype,
componentname, componentunit, dtunit, &nstep) < 0) {
MESSAGE("ERROR : Field info ...");
free(componentname);
free(componentunit);
goto ERROR;
}
free(componentname);
free(componentunit);
/*
* Read field values for each computing step
*/
for (csit=0; csit<nstep; csit++) {
if (MEDfieldComputingStepInfo(fid, fieldname, csit+1, &numdt, &numit, &dt) < 0) {
MESSAGE("ERROR : Computing step info ...");
goto ERROR;
}
/*
* ... In our case, we suppose that the field values are only defined on nodes element ...
*/
for (it=1; it<= MED_N_CELL_FIXED_GEO; it++) {
geotype = geotypes[it];
/*
* How many profile for each geometry type ?
*/
if ((nprofile = MEDfieldnProfile(fid, fieldname, numdt, numit, MED_NODE_ELEMENT, geotype,
profilename, localizationname)) < 0) {
MESSAGE("ERROR : read number of profile ");
goto ERROR;
}
/*
* Read values for each profile
*/
for (pit=0; pit<nprofile; pit++) {
if ((nvalues = MEDfieldnValueWithProfile(fid, fieldname, numdt, numit, MED_NODE_ELEMENT, geotype,
pit+1, MED_COMPACT_STMODE, profilename, &profilesize,
localizationname, &nintegrationpoint)) < 0) {
MESSAGE("ERROR : read number of values with a profile ...");
goto ERROR;
}
if (nvalues) {
if ((values = (med_float *) malloc(sizeof(med_float)*nvalues*ncomponent*nintegrationpoint)) == NULL) {
MESSAGE("ERROR : memory allocation ...");
goto ERROR;
}
if (MEDfieldValueWithProfileRd(fid, fieldname, numdt, numit, MED_NODE_ELEMENT, geotype,
MED_COMPACT_STMODE, profilename,
MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
(unsigned char*) values) < 0) {
MESSAGE("ERROR : read fields values for cells ...");
free(values);
goto ERROR;
}
free(values);
}
}
}
}
}
ret=0;
ERROR:
/* close file */
if (MEDfileClose(fid) < 0) {
MESSAGE("ERROR : close file ...");
ret=-1;
}
return ret;
}