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UsesCase_MEDfield_18.c
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1 /* This file is part of MED.
2 *
3 * COPYRIGHT (C) 1999 - 2019 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 18 : read a field (generic approach) in a MED file with
32 * values defined on integration points on struct elements
33 */
34
35
36 int main (int argc, char **argv) {
37 med_idt fid,mfid,sfid,cmfid;
38 med_idt nfield, i, j;
39 char meshname[MED_NAME_SIZE+1]="";
40 med_bool localmesh;
41 char fieldname[MED_NAME_SIZE+1]="";
42 med_field_type fieldtype;
43 char *componentname = NULL;
44 char *componentunit = NULL;
45 char dtunit[MED_SNAME_SIZE+1]="";
46 med_float *values = NULL;
47 med_int nstep, nvalues;
48 med_int ncomponent;
49 med_int csit, numit, numdt, it;
50 med_float dt;
51 med_geometry_type *geotypes=NULL, geotype;
52 med_int nmodels;
53 med_int nprofile, pit, profilesize;
54 char profilename[MED_NAME_SIZE+1]="";
55 med_int nintegrationpoint;
56 char localizationname[MED_NAME_SIZE+1]="";
57 int k;
58 char elementname[MED_NAME_SIZE+1]="";
59 char supportmeshname[MED_NAME_SIZE+1]="";
60 med_entity_type entitype;
61 med_int elementdim;
62 med_int nnode,ncell;
63 med_geometry_type geocelltype;
64 med_bool anyprofile=0;
65 med_int nconstatt, *nvaratt=NULL;
66 med_bool coordinatechangement;
67 med_bool geotransformation;
68 int ret=-1;
69
70
71 /* open file */
72 fid = MEDfileOpen("UsesCase_MEDfield_17.med",MED_ACC_RDWR);
73 if (fid < 0) {
74 MESSAGE("ERROR : open file ...");
75 return -1;
76 }
77
78 if (( mfid=MEDfileObjectsMount(fid, "UsesCase_MEDstructElement_1.med",MED_MESH_SUPPORT)) < 0 ) {
79 MESSAGE("ERROR : file mounting ...");
80 return -1;
81 }
82
83 if (( sfid=MEDfileObjectsMount(fid, "UsesCase_MEDstructElement_1.med",MED_ELSTRUCT)) < 0 ) {
84 MESSAGE("ERROR : file mounting ...");
85 return -1;
86 }
87
88 if (( cmfid=MEDfileObjectsMount(fid, "UsesCase_MEDstructElement_1.med",MED_MESH)) < 0 ) {
89 MESSAGE("ERROR : file mounting ...");
90 return -1;
91 }
92
93
94 /*
95 * generic approach : how many fields in the file and identification
96 * of each field.
97 */
98 if ((nfield = MEDnField(fid)) < 0) {
99 MESSAGE("ERROR : How many fields in the file ...");
100 return -1;
101 }
102
103 /*
104 * read values for each field
105 */
106 for (i=0; i<nfield; i++) {
107
108 if ((ncomponent = MEDfieldnComponent(fid,i+1)) < 0) {
109 MESSAGE("ERROR : number of field component ...");
110 return -1;
111 }
112
113 if ((componentname = (char *) malloc(ncomponent*MED_SNAME_SIZE+1)) == NULL) {
114 MESSAGE("ERROR : memory allocation ...");
115 return -1;
116 }
117
118 if ((componentunit = (char *) malloc(ncomponent*MED_SNAME_SIZE+1)) == NULL) {
119 MESSAGE("ERROR : memory allocation ...");
120 return -1;
121 }
122
123 if (MEDfieldInfo(fid, i+1, fieldname, meshname, &localmesh, &fieldtype,
124 componentname, componentunit, dtunit, &nstep) < 0) {
125 MESSAGE("ERROR : Field info ...");
126 free(componentname);
127 free(componentunit);
128 return -1;
129 }
130
131 free(componentname);
132 free(componentunit);
133
134 /* read how many struct element models in the mesh ? */
135 if ((nmodels = MEDmeshnEntity(fid, meshname, MED_NO_DT, MED_NO_IT, MED_STRUCT_ELEMENT, MED_GEO_ALL,
136 MED_UNDEF_DATATYPE, MED_NO_CMODE,&coordinatechangement,
137 &geotransformation)) < 0) {
138 MESSAGE("ERROR : number of nodes ...");
139 return -1;
140 }
141 geotypes = (med_geometry_type *) malloc(sizeof(med_geometry_type)*nmodels);
142 nvaratt = (med_int *) malloc(sizeof(med_int)*nmodels);
143
144 for (it=0; it<nmodels; it++) {
145 if (MEDstructElementInfo(mfid, it+1, elementname, geotypes+it, &elementdim,
146 supportmeshname, &entitype, &nnode, &ncell,
147 &geocelltype, &nconstatt, &anyprofile, nvaratt+it) < 0) {
148 MESSAGE("ERROR : struct element models information ...");
149 return -1;
150 }
151 }
152
153
154 /*
155 * Read field values for each computing step
156 */
157 for (csit=0; csit<nstep; csit++) {
158
159 if (MEDfieldComputingStepInfo(fid, fieldname, csit+1, &numdt, &numit, &dt) < 0) {
160 MESSAGE("ERROR : Computing step info ...");
161 return -1;
162 }
163
164 /*
165 * ... In our case, we suppose that the field values are only defined on struct element ...
166 */
167 for (it=0; it<nmodels; it++) {
168 geotype = *(geotypes+it);
169
170 /*
171 * How many profile for each geometry type ?
172 */
173 if ((nprofile = MEDfieldnProfile(fid, fieldname, numdt, numit, MED_STRUCT_ELEMENT, geotype,
174 profilename, localizationname)) < 0) {
175 MESSAGE("ERROR : read number of profile ");
176 return -1;
177 }
178
179 /*
180 * Read values for each profile
181 */
182 for (pit=0; pit<nprofile; pit++) {
183
184 if ((nvalues = MEDfieldnValueWithProfile(fid, fieldname, numdt, numit, MED_STRUCT_ELEMENT, geotype,
185 pit+1, MED_COMPACT_STMODE, profilename, &profilesize,
186 localizationname, &nintegrationpoint)) < 0) {
187 MESSAGE("ERROR : read number of values with a profile ...");
188 return -1;
189 }
190
191 if (nvalues) {
192 if ((values = (med_float *) malloc(sizeof(med_float)*nvalues*ncomponent*nintegrationpoint)) == NULL) {
193 MESSAGE("ERROR : memory allocation ...");
194 return -1;
195 }
196 if (MEDfieldValueWithProfileRd(fid, fieldname, numdt, numit, MED_STRUCT_ELEMENT, geotype,
197 MED_COMPACT_STMODE, profilename,
198 MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
199 (unsigned char*) values) < 0) {
200 MESSAGE("ERROR : read fields values for cells ...");
201 free(values);
202 return -1;
203 }
204 free(values);
205 }
206 }
207 }
208 }
209
210 ret=0;
211 ERROR:
212 if (nvaratt)
213 free(nvaratt);
214 if (geotypes)
215 free(geotypes);
216
217 }
218
219
220
221 if ( MEDfileObjectsUnmount(fid, mfid, MED_MESH_SUPPORT) < 0 ) {
222 MESSAGE("ERROR : file unmounting ...");
223 ret=-1;
224 }
225
226 if ( MEDfileObjectsUnmount(fid, sfid, MED_ELSTRUCT) < 0 ) {
227 MESSAGE("ERROR : file unmounting ...");
228 ret=-1;
229 }
230
231
232 if ( MEDfileObjectsUnmount(fid, cmfid, MED_MESH) < 0 ) {
233 MESSAGE("ERROR : file unmounting ...");
234 ret=-1;
235 }
236
237 /* close file */
238 if (MEDfileClose(fid) < 0) {
239 MESSAGE("ERROR : close file ...");
240 ret=-1;
241 }
242
243 return ret;
244 }
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 séquence de calcul : numéro de pas d...
Definition: MEDfieldComputingStepInfo.c:39
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
MED_NO_IT
#define MED_NO_IT
Definition: med.h:316
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_utils.h
MED_MESH
Definition: med.h:185
MEDfileOpen
MEDC_EXPORT med_idt MEDfileOpen(const char *const filename, const med_access_mode accessmode)
Ouverture d'un fichier MED.
Definition: MEDfileOpen.c:41
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
MEDmeshnEntity
MEDC_EXPORT med_int MEDmeshnEntity(const med_idt fid, const char *const meshname, const med_int numdt, const med_int numit, const med_entity_type entitype, const med_geometry_type geotype, const med_data_type datatype, const med_connectivity_mode cmode, med_bool *const changement, med_bool *const transformation)
Cette routine permet de lire le nombre d'entités dans un maillage pour une séquence de calcul donnée...
Definition: MEDmeshnEntity.c:44
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 séquence de calc...
Definition: MEDfieldnProfile.c:40
MED_FULL_INTERLACE
Definition: med.h:94
med_float
double med_float
Definition: med.h:331
MED_STRUCT_ELEMENT
Definition: med.h:142
MED_ALL_CONSTITUENT
#define MED_ALL_CONSTITUENT
Definition: med.h:296
MESSAGE
#define MESSAGE(chaine)
Definition: med_utils.h:316
MEDfileClose
MEDC_EXPORT med_err MEDfileClose(med_idt fid)
Fermeture d'un fichier MED.
Definition: MEDfileClose.c:30
MED_COMPACT_STMODE
Definition: med.h:108
MED_UNDEF_DATATYPE
Definition: med.h:150
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 séquence de calcul...
Definition: MEDfieldnValueWithProfile.c:45
med_entity_type
med_entity_type
Definition: med.h:141
MED_ACC_RDWR
Definition: med.h:119
med_int
int med_int
Definition: med.h:337
MED_MESH_SUPPORT
Definition: med.h:186
med_field_type
med_field_type
Definition: med.h:162
MED_NO_CMODE
Definition: med.h:252
MED_GEO_ALL
#define MED_GEO_ALL
Definition: med.h:233
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_idt
hid_t med_idt
Definition: med.h:326
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_NO_DT
#define MED_NO_DT
Definition: med.h:315
MED_NAME_SIZE
#define MED_NAME_SIZE
Definition: med.h:79
MED_SNAME_SIZE
#define MED_SNAME_SIZE
Definition: med.h:80
med.h
med_bool
med_bool
Definition: med.h:257
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_ELSTRUCT
Definition: med.h:186
main
int main(int argc, char **argv)
Definition: UsesCase_MEDfield_18.c:36
med_geometry_type
int med_geometry_type
Definition: med.h:191
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