MED fichier: usecases/c/UsesCase_MEDfield_1.c

MED fichier

- Documentation MED
- Guides d'utilisation
- Guides de référence

usecases/c/UsesCase_MEDfield_1.c
/* This file is part of MED.
*
* COPYRIGHT (C) 1999 - 2017 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/>.
*/
/*
* Field use case 1 : write a field on mesh vertices and elements
*/
#include <med.h>
#define MESGERR 1
#include <med_utils.h>
#include <string.h>
int main (int argc, char **argv) {
med_idt fid;
const char meshname[MED_NAME_SIZE+1] = "2D unstructured mesh";
const char fieldname[MED_NAME_SIZE+1] = "TEMPERATURE_FIELD";
const med_int ncomponent = 1;
const char componentname[MED_SNAME_SIZE+1] = "TEMPERATURE";
const char componentunit[MED_SNAME_SIZE+1] = "C";
const med_float verticesvalues[15] = { 0., 100., 200., 300., 400.,
500., 600., 700., 800., 900,
1000., 1100, 1200., 1300., 1500. };
const med_int nnodes = 15;
const med_float tria3values[8] = {1000., 2000., 3000., 4000.,
5000., 6000., 7000., 8000.};
const med_int ntria3 = 8;
const med_float quad4values[4] = {10000., 20000., 30000., 4000.};
const med_int nquad4 = 4;
int ret=-1;
/* file creation */
fid = MEDfileOpen("UsesCase_MEDfield_1.med",MED_ACC_CREAT);
if (fid < 0) {
MESSAGE("ERROR : file creation ...");
goto ERROR;
}
/* field creation : temperature field : 1 component in celsius degree
* the mesh is the 2D unstructured mesh of UsecaseMEDmesh_1.c
*/
/* create mesh link */
if (MEDlinkWr(fid,meshname,"./UsesCase_MEDmesh_1.med") < 0) {
MESSAGE("ERROR : create mesh link ...");
goto ERROR;
}
if (MEDfieldCr(fid, fieldname, MED_FLOAT64,
ncomponent, componentname, componentunit,"",
meshname) < 0) {
MESSAGE("ERROR : create field");
goto ERROR;
}
/* write field values at vertices */
if (MEDfieldValueWr(fid, fieldname, MED_NO_DT, MED_NO_IT, 0.0, MED_NODE,
MED_NONE, MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
nnodes,(unsigned char*) verticesvalues) < 0) {
MESSAGE("ERROR : write field values on vertices");
goto ERROR;
}
/* write values at cell centers : 8 MED_TRIA3 and 4 MED_QUAD4 */
/* MED_TRIA3 */
if (MEDfieldValueWr(fid, fieldname, MED_NO_DT, MED_NO_IT, 0.0, MED_CELL,
MED_TRIA3, MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
ntria3, (unsigned char*) tria3values) < 0) {
MESSAGE("ERROR : write field values on MED_TRIA3");
goto ERROR;
}
/* MED_QUAD4 */
if (MEDfieldValueWr(fid, fieldname, MED_NO_DT, MED_NO_IT, 0.0, MED_CELL,
MED_QUAD4, MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
nquad4, (unsigned char*) quad4values) < 0) {
MESSAGE("ERROR : write field values on MED_QUAD4 ");
goto ERROR;
}
ret=0;
ERROR :
/* close file */
if (MEDfileClose(fid) < 0) {
MESSAGE("ERROR : close file ...");
ret = -1;
}
return ret;
}