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UsesCase_MEDfield_14.c
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1 /* This file is part of MED.
2 *
3 * COPYRIGHT (C) 1999 - 2021 EDF R&D, CEA/DEN
4 * MED is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
8 *
9 * MED is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public License
15 * along with MED. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18 #include <med.h>
19 #define MESGERR 1
20 #include <med_utils.h>
21
22 #include <string.h>
23
24 #include <med.h>
25 #define MESGERR 1
26 #include <med_utils.h>
27
28 #include <string.h>
29
30 /*
31 * Field use case 14 : read a field on nodes elements (generic approach) in a MED file
32 */
33
34
35 int main (int argc, char **argv) {
36 med_idt fid;
37 med_idt nfield, i, j;
38 char meshname[MED_NAME_SIZE+1]="";
39 med_bool localmesh;
40 char fieldname[MED_NAME_SIZE+1]="";
41 med_field_type fieldtype;
42 char *componentname = NULL;
43 char *componentunit = NULL;
44 char dtunit[MED_SNAME_SIZE+1]="";
45 med_float *values = NULL;
46 med_int nstep, nvalues;
47 med_int ncomponent;
48 med_int csit, numit, numdt, it;
49 med_float dt;
50 med_geometry_type geotype;
51 med_geometry_type *geotypes = MED_GET_CELL_GEOMETRY_TYPE;
52 med_int nprofile, pit, profilesize;
53 char profilename[MED_NAME_SIZE+1]="";
54 med_int nintegrationpoint;
55 char localizationname[MED_NAME_SIZE+1]="";
56 int k;
57 int ret=-1;
58
59 /* open file */
60 fid = MEDfileOpen("UsesCase_MEDfield_13.med",MED_ACC_RDONLY);
61 if (fid < 0) {
62 MESSAGE("ERROR : open file ...");
63 goto ERROR;
64 }
65
66 /*
67 * generic approach : how many fields in the file and identification
68 * of each field.
69 */
70 if ((nfield = MEDnField(fid)) < 0) {
71 MESSAGE("ERROR : How many fields in the file ...");
72 goto ERROR;
73 }
74
75 /*
76 * read values for each field
77 */
78 for (i=0; i<nfield; i++) {
79
80 if ((ncomponent = MEDfieldnComponent(fid,i+1)) < 0) {
81 MESSAGE("ERROR : number of field component ...");
82 goto ERROR;
83 }
84
85 if ((componentname = (char *) malloc(ncomponent*MED_SNAME_SIZE+1)) == NULL) {
86 MESSAGE("ERROR : memory allocation ...");
87 goto ERROR;
88 }
89
90 if ((componentunit = (char *) malloc(ncomponent*MED_SNAME_SIZE+1)) == NULL) {
91 MESSAGE("ERROR : memory allocation ...");
92 goto ERROR;
93 }
94
95 if (MEDfieldInfo(fid, i+1, fieldname, meshname, &localmesh, &fieldtype,
96 componentname, componentunit, dtunit, &nstep) < 0) {
97 MESSAGE("ERROR : Field info ...");
98 free(componentname);
99 free(componentunit);
100 goto ERROR;
101 }
102
103 free(componentname);
104 free(componentunit);
105
106 /*
107 * Read field values for each computing step
108 */
109 for (csit=0; csit<nstep; csit++) {
110
111 if (MEDfieldComputingStepInfo(fid, fieldname, csit+1, &numdt, &numit, &dt) < 0) {
112 MESSAGE("ERROR : Computing step info ...");
113 goto ERROR;
114 }
115
116 /*
117 * ... In our case, we suppose that the field values are only defined on nodes element ...
118 */
119 for (it=1; it<= MED_N_CELL_FIXED_GEO; it++) {
120
121 geotype = geotypes[it];
122 /*
123 * How many profile for each geometry type ?
124 */
125 if ((nprofile = MEDfieldnProfile(fid, fieldname, numdt, numit, MED_NODE_ELEMENT, geotype,
126 profilename, localizationname)) < 0) {
127 MESSAGE("ERROR : read number of profile ");
128 goto ERROR;
129 }
130
131 /*
132 * Read values for each profile
133 */
134 for (pit=0; pit<nprofile; pit++) {
135
136 if ((nvalues = MEDfieldnValueWithProfile(fid, fieldname, numdt, numit, MED_NODE_ELEMENT, geotype,
137 pit+1, MED_COMPACT_STMODE, profilename, &profilesize,
138 localizationname, &nintegrationpoint)) < 0) {
139 MESSAGE("ERROR : read number of values with a profile ...");
140 goto ERROR;
141 }
142
143 if (nvalues) {
144 if ((values = (med_float *) malloc(sizeof(med_float)*nvalues*ncomponent*nintegrationpoint)) == NULL) {
145 MESSAGE("ERROR : memory allocation ...");
146 goto ERROR;
147 }
148 if (MEDfieldValueWithProfileRd(fid, fieldname, numdt, numit, MED_NODE_ELEMENT, geotype,
149 MED_COMPACT_STMODE, profilename,
150 MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
151 (unsigned char*) values) < 0) {
152 MESSAGE("ERROR : read fields values for node elements ...");
153 free(values);
154 goto ERROR;
155 }
156 free(values);
157 }
158 }
159 }
160 }
161 }
162
163 ret=0;
164 ERROR:
165
166 /* close file */
167 if (MEDfileClose(fid) < 0) {
168 MESSAGE("ERROR : close file ...");
169 ret=-1;
170 }
171
172 return ret;
173 }
MED_FULL_INTERLACE
Definition: med.h:96
main
int main(int argc, char **argv)
Definition: UsesCase_MEDfield_14.c:35
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_ACC_RDONLY
Definition: med.h:120
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_GET_CELL_GEOMETRY_TYPE
med_geometry_type MED_GET_CELL_GEOMETRY_TYPE[MED_N_CELL_FIXED_GEO+2]
Definition: MEDiterators.c:55
med.h
med_bool
med_bool
Definition: med.h:260
med_float
double med_float
Definition: med.h:336
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
MED_N_CELL_FIXED_GEO
#define MED_N_CELL_FIXED_GEO
Definition: med.h:239
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
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
med_utils.h
MED_NODE_ELEMENT
Definition: med.h:144