MED fichier: usecases/c/UsesCase_MEDfield_4.c

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usecases/c/UsesCase_MEDfield_4.c
/* This file is part of MED.
*
* COPYRIGHT (C) 1999 - 2019 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 4 : write a field with computing steps
*/
#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_int ntria3 = 8;
const med_int nquad4 = 4;
const med_float tria3values_step1[8] = {1000., 2000., 3000., 4000.,
5000., 6000., 7000., 8000.};
const med_float quad4values_step1[4] = {10000., 20000., 30000., 4000.};
const med_float tria3values_step2[8] = {1500., 2500., 3500., 4500.,
5500., 6500., 7500., 8500.};
const med_float quad4values_step2[4] = {15000., 25000., 35000., 45000.};
int ret=-1;
/* file creation */
fid = MEDfileOpen("UsesCase_MEDfield_4.med",MED_ACC_CREAT);
if (fid < 0) {
MESSAGE("ERROR : file creation ...");
goto ERROR;
}
/* create mesh link */
if (MEDlinkWr(fid,meshname,"./UsesCase_MEDmesh_1.med") < 0) {
MESSAGE("ERROR : create mesh link ...");
goto ERROR;
}
/* field creation : temperature field : 1 component in celsius degree
* the mesh is the 2D unstructured mesh of UsescaseMEDmesh_1.c
* use case. Computation step unit in 'ms'
*/
if (MEDfieldCr(fid, fieldname, MED_FLOAT64,
ncomponent, componentname, componentunit,"ms", meshname) < 0) {
MESSAGE("ERROR : create field");
goto ERROR;
}
/* two computation steps :
* - first on meshname MED_NO_DT,MED_NO_IT mesh computation step
* - second on meshname 1,3 mesh computation step */
/* write values at cell centers : 8 MED_TRIA3 and 4 MED_QUAD4 */
/* STEP 1 : dt1 = 5.5, it = 1*/
/* MED_TRIA3 */
if (MEDfieldValueWr(fid, fieldname, 1, 1, 5.5, MED_CELL, MED_TRIA3, MED_FULL_INTERLACE,
MED_ALL_CONSTITUENT, ntria3, (unsigned char*) tria3values_step1) < 0) {
MESSAGE("ERROR : write field values on MED_TRIA3");
goto ERROR;
}
/* MED_QUAD4 */
if (MEDfieldValueWr(fid, fieldname, 1, 1, 5.5, MED_CELL, MED_QUAD4, MED_FULL_INTERLACE,
MED_ALL_CONSTITUENT, nquad4, (unsigned char*) quad4values_step1) < 0) {
MESSAGE("ERROR : write field values on MED_QUAD4 ");
goto ERROR;
}
/* STEP 2 : dt2 = 8.9, it = 1*/
/* MED_TRIA3 */
if (MEDfieldValueWr(fid, fieldname, 2 , 1 , 8.9 , MED_CELL, MED_TRIA3, MED_FULL_INTERLACE,
MED_ALL_CONSTITUENT, ntria3, (unsigned char*)tria3values_step2) < 0) {
MESSAGE("ERROR : write field values on MED_TRIA3");
goto ERROR;
}
/* MED_QUAD4 */
if (MEDfieldValueWr(fid, fieldname, 2, 1, 8.9, MED_CELL, MED_QUAD4, MED_FULL_INTERLACE,
MED_ALL_CONSTITUENT, nquad4, (unsigned char*)quad4values_step2) < 0) {
MESSAGE("ERROR : write field values on MED_QUAD4 ");
goto ERROR;
}
/* Write associated mesh computation step */
if ( MEDfieldComputingStepMeshWr(fid, fieldname, 2, 1,
1, 3 ) < 0 ) {
MESSAGE("ERROR : write field mesh computation step error ");
goto ERROR;
}
ret=0;
ERROR:
/* close file */
if (MEDfileClose(fid) < 0) {
MESSAGE("ERROR : close file ...");
ret=-1;
}
return ret;
}