MED fichier
UsesCase_MEDfield_1.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 /*
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,
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,
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,
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 
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_TRIA3
#define MED_TRIA3
Definition: med.h:203
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_SNAME_SIZE
#define MED_SNAME_SIZE
Definition: med.h:82
main
int main(int argc, char **argv)
Definition: UsesCase_MEDfield_1.c:29
med_idt
hid_t med_idt
Definition: med.h:331
MED_CELL
Definition: med.h:143
MESSAGE
#define MESSAGE(chaine)
Definition: med_utils.h:324
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
med_int
int med_int
Definition: med.h:342
med.h
med_float
double med_float
Definition: med.h:336
MED_NO_DT
#define MED_NO_DT
Definition: med.h:320
MED_NONE
#define MED_NONE
Definition: med.h:231
MED_NODE
Definition: med.h:143
MED_ACC_CREAT
Definition: med.h:123
MED_NAME_SIZE
#define MED_NAME_SIZE
Definition: med.h:81
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_FLOAT64
Definition: med.h:166
MED_NO_IT
#define MED_NO_IT
Definition: med.h:321
med_utils.h
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
MED_QUAD4
#define MED_QUAD4
Definition: med.h:204