MED fichier
UsesCase_MEDinterp_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  * Interp use case 1 : write an interpolation family
20  * In this example, the interpolation family can be used with
21  * the TEMPERATURE field of UsesCase_MEDfield_10 use case
22  */
23 
24 #include <med.h>
25 #define MESGERR 1
26 #include <med_utils.h>
27 
28 #include <string.h>
29 
30 int main (int argc, char **argv) {
31  med_idt fid;
32  char interpname[MED_NAME_SIZE+1] = "MED_TRIA3 interpolation family";
33  const med_int nvariable=2;
34  const med_int maxdegree=1;
35  const med_int nmaxcoefficient=3;
36  const med_int ncoefficient1_1 = 3;
37  const med_int const power1_1[] = {0,0,1,0,0,1};
38  const med_float const coefficient1_1[] = {1,-1,-1};
39 
40  const med_int ncoefficient1_2 = 1;
41  const med_int const power1_2[] = {1,0};
42  const med_float const coefficient1_2[] = {1};
43 
44  const med_int ncoefficient1_3 = 1;
45  const med_int const power1_3[] = {0,1};
46  const med_float const coefficient1_3[] = {1};
47  int ret=-1;
48 
49  /* file creation */
50  fid = MEDfileOpen("UsesCase_MEDinterp_1.med",MED_ACC_CREAT);
51  if (fid < 0) {
52  MESSAGE("ERROR : file creation ...");
53  goto ERROR;
54  }
55 
56  /* Family interpolation creation :
57  - reference element = MED_TRIA3
58  - integration points of UsesCase_MEDfield_10 use case
59  are used to build the interpolation
60  - basis functions are P1(X)= 1-X1-X2, P2(X)= X1, P3(X)= X2
61  */
62  if (MEDinterpCr(fid, interpname, MED_TRIA3, MED_FALSE, nvariable, maxdegree, nmaxcoefficient) < 0) {
63  MESSAGE("ERROR : interpolation family creation ...");
64  goto ERROR;
65  }
66 
67  /* Basis functions creation */
68  if (MEDinterpBaseFunctionWr(fid,interpname,1,ncoefficient1_1,power1_1,coefficient1_1) < 0) {
69  MESSAGE("ERROR : first base function creation ...");
70  goto ERROR;
71  }
72 
73  if (MEDinterpBaseFunctionWr(fid,interpname,2,ncoefficient1_2,power1_2,coefficient1_2) < 0) {
74  MESSAGE("ERROR : second base function creation ...");
75  goto ERROR;
76  }
77 
78  if (MEDinterpBaseFunctionWr(fid,interpname,3,ncoefficient1_3,power1_3,coefficient1_3) < 0) {
79  MESSAGE("ERROR : third base function creation ...");
80  goto ERROR;
81  }
82 
83  ret=0;
84  ERROR:
85 
86  /* close file */
87  if (MEDfileClose(fid) < 0) {
88  MESSAGE("ERROR : close file ...");
89  ret=-1;
90  }
91 
92  return ret;
93 }
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
main
int main(int argc, char **argv)
Definition: UsesCase_MEDinterp_1.c:30
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_utils.h