usecases/c/UsesCase_MEDinterp_1.c
/* This file is part of MED.
*
* COPYRIGHT (C) 1999 - 2021 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/>.
*/
/*
* Interp use case 1 : write an interpolation family
* In this example, the interpolation family can be used with
* the TEMPERATURE field of UsesCase_MEDfield_10 use case
*/
#include <med.h>
#define MESGERR 1
#include <med_utils.h>
#include <string.h>
int main (int argc, char **argv) {
med_idt fid;
char interpname[MED_NAME_SIZE+1] = "MED_TRIA3 interpolation family";
const med_int nvariable=2;
const med_int maxdegree=1;
const med_int nmaxcoefficient=3;
const med_int ncoefficient1_1 = 3;
const med_int const power1_1[] = {0,0,1,0,0,1};
const med_float const coefficient1_1[] = {1,-1,-1};
const med_int ncoefficient1_2 = 1;
const med_int const power1_2[] = {1,0};
const med_float const coefficient1_2[] = {1};
const med_int ncoefficient1_3 = 1;
const med_int const power1_3[] = {0,1};
const med_float const coefficient1_3[] = {1};
int ret=-1;
/* file creation */
fid = MEDfileOpen("UsesCase_MEDinterp_1.med",MED_ACC_CREAT);
if (fid < 0) {
MESSAGE("ERROR : file creation ...");
goto ERROR;
}
/* Family interpolation creation :
- reference element = MED_TRIA3
- integration points of UsesCase_MEDfield_10 use case
are used to build the interpolation
- basis functions are P1(X)= 1-X1-X2, P2(X)= X1, P3(X)= X2
*/
if (MEDinterpCr(fid, interpname, MED_TRIA3, MED_FALSE, nvariable, maxdegree, nmaxcoefficient) < 0) {
MESSAGE("ERROR : interpolation family creation ...");
goto ERROR;
}
/* Basis functions creation */
if (MEDinterpBaseFunctionWr(fid,interpname,1,ncoefficient1_1,power1_1,coefficient1_1) < 0) {
MESSAGE("ERROR : first base function creation ...");
goto ERROR;
}
if (MEDinterpBaseFunctionWr(fid,interpname,2,ncoefficient1_2,power1_2,coefficient1_2) < 0) {
MESSAGE("ERROR : second base function creation ...");
goto ERROR;
}
if (MEDinterpBaseFunctionWr(fid,interpname,3,ncoefficient1_3,power1_3,coefficient1_3) < 0) {
MESSAGE("ERROR : third base function creation ...");
goto ERROR;
}
ret=0;
ERROR:
/* close file */
if (MEDfileClose(fid) < 0) {
MESSAGE("ERROR : close file ...");
ret=-1;
}
return ret;
}
MED_TRIA3
#define MED_TRIA3
Definition: med.h:203
MEDfileOpen
MEDC_EXPORT med_idt MEDfileOpen(const char *const filename, const med_access_mode accessmode)
Ouverture d'un fichier MED.
Definition: MEDfileOpen.c:42
MEDinterpBaseFunctionWr
MEDC_EXPORT med_err MEDinterpBaseFunctionWr(const med_idt fid, const char *const interpname, const med_int basisfuncit, const med_int ncoef, const med_int *const power, const med_float *const coefficient)
Cette routine permet l'écriture d'une fonction de base/forme de l'interpolation interpname.
Definition: MEDinterpBaseFunctionWr.c:41
med_idt
hid_t med_idt
Definition: med.h:331
MEDinterpCr
MEDC_EXPORT med_err MEDinterpCr(const med_idt fid, const char *const interpname, const med_geometry_type geotype, const med_bool cellnodes, const med_int nvariable, const med_int maxdegree, const med_int nmaxcoef)
Cette routine permet de créer une nouvelle fonction d'interpolation polynômiale nommée interpname.
Definition: MEDinterpCr.c:43
MED_FALSE
Definition: med.h:260
MESSAGE
#define MESSAGE(chaine)
Definition: med_utils.h:324
med_int
int med_int
Definition: med.h:342
med.h
med_float
double med_float
Definition: med.h:336
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
main
int main(int argc, char **argv)
Definition: 3.0.8/test10.c:50
med_utils.h