MED fichier

usecases/c/UsesCase_MEDfield_16.c
/* This file is part of MED.
*
* COPYRIGHT (C) 1999 - 2021 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 16 : read a field (generic approach) in a MED file with
* - values defined on struct elements
*/
int main (int argc, char **argv) {
med_idt fid,mfid,sfid;
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 *geotypes, geotype;
med_int nmodels;
med_int nprofile, pit, profilesize;
char profilename[MED_NAME_SIZE+1]="";
med_int nintegrationpoint;
char localizationname[MED_NAME_SIZE+1]="";
int k;
char elementname[MED_NAME_SIZE+1];
char supportmeshname[MED_NAME_SIZE+1];
med_entity_type entitype;
med_int elementdim;
med_int nnode,ncell;
med_geometry_type geocelltype;
med_bool anyprofile=0;
med_int nconstatt, *nvaratt;
int ret=-1;
/* open file */
fid = MEDfileOpen("UsesCase_MEDfield_15.med",MED_ACC_RDWR);
if (fid < 0) {
MESSAGE("ERROR : open file ...");
goto ERROR;
}
if (( mfid=MEDfileObjectsMount(fid, "UsesCase_MEDstructElement_1.med",MED_MESH_SUPPORT)) < 0 ) {
MESSAGE("ERROR : file mounting ...");
goto ERROR;
}
if (( sfid=MEDfileObjectsMount(fid, "UsesCase_MEDstructElement_1.med",MED_ELSTRUCT)) < 0 ) {
MESSAGE("ERROR : file mounting ...");
goto ERROR;
}
/* How many struct element models ? */
if ((nmodels = MEDnStructElement(mfid)) < 0) {
MESSAGE("ERROR : read number of struct element models ...");
goto ERROR;
}
geotypes = (med_geometry_type *) malloc(sizeof(med_geometry_type)*nmodels);
nvaratt = (med_int *) malloc(sizeof(med_int)*nmodels);
for (it=0; it<nmodels; it++) {
if (MEDstructElementInfo(mfid, it+1, elementname, geotypes+it, &elementdim,
supportmeshname, &entitype, &nnode, &ncell,
&geocelltype, &nconstatt, &anyprofile, nvaratt+it) < 0) {
MESSAGE("ERROR : struct element models information ...");
free(nvaratt);
goto ERROR;
}
}
free(nvaratt);
/*
* 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 struct element ...
*/
for (it=0; it<nmodels; it++) {
geotype = *(geotypes+it);
/*
* How many profile for each geometry type ?
*/
if ((nprofile = MEDfieldnProfile(fid, fieldname, numdt, numit, MED_STRUCT_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_STRUCT_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_STRUCT_ELEMENT, geotype,
MED_COMPACT_STMODE, profilename,
MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
(unsigned char*) values) < 0) {
MESSAGE("ERROR : read fields values for cells ...");
goto ERROR;
free(values);
}
free(values);
}
}
}
}
}
ret=0;
ERROR :
free(geotypes);
if ( MEDfileObjectsUnmount(fid, sfid, MED_ELSTRUCT) < 0 ) {
MESSAGE("ERROR : file unmounting ...");
ret=-1;
}
if ( MEDfileObjectsUnmount(fid, mfid, MED_MESH_SUPPORT) < 0 ) {
MESSAGE("ERROR : file unmounting ...");
ret= -1;
}
/* close file */
if (MEDfileClose(fid) < 0) {
MESSAGE("ERROR : close file ...");
ret= -1;
}
return ret;
}
MED_FULL_INTERLACE
Definition: med.h:96
MEDfileOpen
MEDC_EXPORT med_idt MEDfileOpen(const char *const filename, const med_access_mode accessmode)
Ouverture d'un fichier MED.
Definition: MEDfileOpen.c:42
med_geometry_type
int med_geometry_type
Definition: med.h:194
MED_SNAME_SIZE
#define MED_SNAME_SIZE
Definition: med.h:82
MEDnField
MEDC_EXPORT med_int MEDnField(const med_idt fid)
Cette fonction permet de lire le nombre de champs dans un fichier.
Definition: MEDnField.c:35
med_idt
hid_t med_idt
Definition: med.h:331
MED_STRUCT_ELEMENT
Definition: med.h:144
MEDfileObjectsUnmount
MEDC_EXPORT med_err MEDfileObjectsUnmount(const med_idt fid, const med_idt mid, const med_class medclass)
Une fois le démontage effectué, les données précédemment montées ne sont plus accessibles.
Definition: MEDfileObjectsUnmount.c:33
med_entity_type
med_entity_type
Definition: med.h:143
MEDfieldnValueWithProfile
MEDC_EXPORT med_int MEDfieldnValueWithProfile(const med_idt fid, const char *const fieldname, const med_int numdt, const med_int numit, const med_entity_type entitype, const med_geometry_type geotype, const int profileit, const med_storage_mode storagemode, char *const profilename, med_int *const profilesize, char *const localizationname, med_int *const nintegrationpoint)
Cette fonction permet de lire le nombre de valeurs à lire dans un champ pour une étape de calcul,...
Definition: MEDfieldnValueWithProfile.c:45
MESSAGE
#define MESSAGE(chaine)
Definition: med_utils.h:324
med_int
int med_int
Definition: med.h:342
med_field_type
med_field_type
Definition: med.h:165
MED_ACC_RDWR
Definition: med.h:121
med.h
med_bool
med_bool
Definition: med.h:260
MED_MESH_SUPPORT
Definition: med.h:189
med_float
double med_float
Definition: med.h:336
MEDfileObjectsMount
MEDC_EXPORT med_idt MEDfileObjectsMount(const med_idt fid, const char *const filename, const med_class medclass)
Cette routine permet de monter dans le fichier courant un type de données (exemples les maillages,...
Definition: MEDfileObjectsMount.c:40
MEDfieldnProfile
MEDC_EXPORT med_int MEDfieldnProfile(const med_idt fid, const char *const fieldname, const med_int numdt, const med_int numit, const med_entity_type enttype, const med_geometry_type geotype, char *const defaultprofilename, char *const defaultlocalizationname)
Cette fonction permet de lire le nombre de profils référencés dans un champ pour une étape de calcul,...
Definition: MEDfieldnProfile.c:40
MEDnStructElement
MEDC_EXPORT med_int MEDnStructElement(const med_idt fid)
Cette routine renvoie le nombre de modèles d'éléments de structure.
Definition: MEDnStructElement.c:35
MEDfieldValueWithProfileRd
MEDC_EXPORT med_err MEDfieldValueWithProfileRd(const med_idt fid, const char *const fieldname, const med_int numdt, const med_int numit, const med_entity_type entitype, const med_geometry_type geotype, const med_storage_mode storagemode, const char *const profilename, const med_switch_mode switchmode, const med_int componentselect, unsigned char *const value)
Cette fonction permet de lire les valeurs d'un champ définies sur des entités d'un maillage pour une ...
Definition: MEDfieldValueWithProfileRd.c:42
MED_NAME_SIZE
#define MED_NAME_SIZE
Definition: med.h:81
MEDfieldComputingStepInfo
MEDC_EXPORT med_err MEDfieldComputingStepInfo(const med_idt fid, const char *const fieldname, const int csit, med_int *const numdt, med_int *const numit, med_float *const dt)
Cette fonction permet de lire les informations caractérisant une étape de calcul : numéro de pas de t...
Definition: MEDfieldComputingStepInfo.c:39
MEDfileClose
MEDC_EXPORT med_err MEDfileClose(med_idt fid)
Fermeture d'un fichier MED.
Definition: MEDfileClose.c:30
MED_ALL_CONSTITUENT
#define MED_ALL_CONSTITUENT
Definition: med.h:299
MED_COMPACT_STMODE
Definition: med.h:110
MEDfieldInfo
MEDC_EXPORT med_err MEDfieldInfo(const med_idt fid, const int ind, char *const fieldname, char *const meshname, med_bool *const localmesh, med_field_type *const fieldtype, char *const componentname, char *const componentunit, char *const dtunit, med_int *const ncstp)
Cette fonction permet de lire les informations concernant le champ d'indice ind .
Definition: MEDfieldInfo.c:42
MEDstructElementInfo
MEDC_EXPORT med_err MEDstructElementInfo(const med_idt fid, const int mit, char *const modelname, med_geometry_type *const mgeotype, med_int *const modeldim, char *const supportmeshname, med_entity_type *const sentitytype, med_int *const snnode, med_int *const sncell, med_geometry_type *const sgeotype, med_int *const nconstantattribute, med_bool *const anyprofile, med_int *const nvariableattribute)
Cette routine décrit les caractéristiques d'un modèle d'élément de structure par itération.
Definition: MEDstructElementInfo.c:50
MED_ELSTRUCT
Definition: med.h:189
MEDfieldnComponent
MEDC_EXPORT med_int MEDfieldnComponent(const med_idt fid, const int ind)
Cette fonction lit le nombre de composantes d'un champ.
Definition: MEDfieldnComponent.c:34
main
int main(int argc, char **argv)
Definition: 3.0.8/test10.c:50
med_utils.h