MED fichier: Fichier source de UsesCase_MEDfield_1.c

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UsesCase_MEDfield_1.c
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1 /* This file is part of MED.
2 *
3 * COPYRIGHT (C) 1999 - 2023 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 /*
19 * Field use case 1 : write a field on mesh vertices and elements
20 */
21
22 #include <med.h>
23 #define MESGERR 1
24 #include <med_utils.h>
25
26 #include <string.h>
27
28
29 int main (int argc, char **argv) {
30 med_idt fid;
31 const char meshname[MED_NAME_SIZE+1] = "2D unstructured mesh";
32 const char fieldname[MED_NAME_SIZE+1] = "TEMPERATURE_FIELD";
33 const med_int ncomponent = 1;
34 const char componentname[MED_SNAME_SIZE+1] = "TEMPERATURE";
35 const char componentunit[MED_SNAME_SIZE+1] = "C";
36 const med_float verticesvalues[15] = { 0., 100., 200., 300., 400.,
37 500., 600., 700., 800., 900,
38 1000., 1100, 1200., 1300., 1500. };
39 const med_int nnodes = 15;
40 const med_float tria3values[8] = {1000., 2000., 3000., 4000.,
41 5000., 6000., 7000., 8000.};
42 const med_int ntria3 = 8;
43 const med_float quad4values[4] = {10000., 20000., 30000., 4000.};
44 const med_int nquad4 = 4;
45 int ret=-1;
46
47 /* file creation */
48 fid = MEDfileOpen("UsesCase_MEDfield_1.med",MED_ACC_CREAT);
49 if (fid < 0) {
50 MESSAGE("ERROR : file creation ...");
51 goto ERROR;
52 }
53
54 /* field creation : temperature field : 1 component in celsius degree
55 * the mesh is the 2D unstructured mesh of UsescaseMEDmesh_1.c
56 */
57
58 /* create mesh link */
59 if (MEDlinkWr(fid,meshname,"./UsesCase_MEDmesh_1.med") < 0) {
60 MESSAGE("ERROR : create mesh link ...");
61 goto ERROR;
62 }
63
64 if (MEDfieldCr(fid, fieldname, MED_FLOAT64,
65 ncomponent, componentname, componentunit,"",
66 meshname) < 0) {
67 MESSAGE("ERROR : create field");
68 goto ERROR;
69 }
70
71 /* write field values at vertices */
72 if (MEDfieldValueWr(fid, fieldname, MED_NO_DT, MED_NO_IT, 0.0, MED_NODE,
73 MED_NONE, MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
74 nnodes,(unsigned char*) verticesvalues) < 0) {
75 MESSAGE("ERROR : write field values on vertices");
76 goto ERROR;
77 }
78
79 /* write values at cell centers : 8 MED_TRIA3 and 4 MED_QUAD4 */
80 /* MED_TRIA3 */
81 if (MEDfieldValueWr(fid, fieldname, MED_NO_DT, MED_NO_IT, 0.0, MED_CELL,
82 MED_TRIA3, MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
83 ntria3, (unsigned char*) tria3values) < 0) {
84 MESSAGE("ERROR : write field values on MED_TRIA3");
85 goto ERROR;
86 }
87 /* MED_QUAD4 */
88 if (MEDfieldValueWr(fid, fieldname, MED_NO_DT, MED_NO_IT, 0.0, MED_CELL,
89 MED_QUAD4, MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
90 nquad4, (unsigned char*) quad4values) < 0) {
91 MESSAGE("ERROR : write field values on MED_QUAD4 ");
92 goto ERROR;
93 }
94
95 ret=0;
96 ERROR :
97
98 /* close file */
99 if (MEDfileClose(fid) < 0) {
100 MESSAGE("ERROR : close file ...");
101 ret = -1;
102 }
103
104 return ret;
105 }
106
MED_TRIA3
#define MED_TRIA3
Definition: med.h:205
main
int main(int argc, char **argv)
Definition: UsesCase_MEDfield_1.c:29
MED_SNAME_SIZE
#define MED_SNAME_SIZE
Definition: med.h:84
med_idt
hid_t med_idt
Definition: med.h:333
MEDfieldValueWr
MEDC_EXPORT med_err MEDfieldValueWr(const med_idt fid, const char *const fieldname, const med_int numdt, const med_int numit, const med_float dt, const med_entity_type entitype, const med_geometry_type geotype, const med_switch_mode switchmode, const med_int componentselect, const med_int nentity, const unsigned char *const value)
Cette fonction permet d'écrire les valeurs d'un champ définies sur des entités d'un maillage pour une...
Definition: MEDfieldValueWr.c:44
MESSAGE
#define MESSAGE(chaine)
Definition: med_utils.h:324
MED_FULL_INTERLACE
Definition: med.h:98
med_int
int med_int
Definition: med.h:344
med_float
double med_float
Definition: med.h:338
MED_NO_DT
#define MED_NO_DT
Definition: med.h:322
MED_NONE
#define MED_NONE
Definition: med.h:233
MEDfileClose
MEDC_EXPORT med_err MEDfileClose(med_idt fid)
Fermeture d'un fichier MED.
Definition: MEDfileClose.c:30
MED_FLOAT64
Definition: med.h:168
MED_CELL
Definition: med.h:145
MED_NAME_SIZE
#define MED_NAME_SIZE
Definition: med.h:83
MED_ALL_CONSTITUENT
#define MED_ALL_CONSTITUENT
Definition: med.h:301
med_utils.h
MED_NODE
Definition: med.h:145
MEDfieldCr
MEDC_EXPORT med_err MEDfieldCr(const med_idt fid, const char *const fieldname, const med_field_type fieldtype, const med_int ncomponent, const char *const componentname, const char *const componentunit, const char *const dtunit, const char *const meshname)
Cette fonction crée un champ dans un fichier.
Definition: MEDfieldCr.c:44
med.h
MED_NO_IT
#define MED_NO_IT
Definition: med.h:323
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_ACC_CREAT
Definition: med.h:125
MED_QUAD4
#define MED_QUAD4
Definition: med.h:206
MEDlinkWr
MEDC_EXPORT med_err MEDlinkWr(const med_idt fid, const char *const meshname, const char *const link)
Cette routine permet d'écrire un lien dans un fichier MED.
Definition: MEDlinkWr.c:36