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UsesCase_MEDmesh_6.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  * How to create an unstructured mesh
20  *
21  * Use case 6 : a 2D unstructured mesh with the following features
22  * computin steps, profiles and nodes coordinates evolution.
23  */
24 
25 #include <med.h>
26 #define MESGERR 1
27 #include <med_utils.h>
28 
29 #include <string.h>
30 
31 int main (int argc, char **argv) {
32  med_idt fid;
33  const char meshname[MED_NAME_SIZE+1] = "2D unstructured mesh";
34  const med_int spacedim = 2;
35  const med_int meshdim = 2;
36  const char axisname[2*MED_SNAME_SIZE+1] = "x y ";
37  const char unitname[2*MED_SNAME_SIZE+1] = "cm cm ";
38  const med_float initial_coordinates[30] = { 2.,1., 7.,1., 12.,1., 17.,1., 22.,1.,
39  2.,6., 7.,6., 12.,6., 17.,6., 22.,6.,
40  2.,11., 7.,11., 12.,11., 17.,11., 22.,11.};
41  const med_int nnodes = 15;
42  const med_int triaconnectivity[24] = { 1,7,6, 2,7,1, 3,7,2, 8,7,3,
43  13,7,8, 12,7,13, 11,7,12, 6,7,11 };
44  const med_int ntria3 = 8;
45  const med_int quadconnectivity[16] = {3,4,9,8, 4,5,10,9,
46  15,14,9,10, 13,8,9,14};
47  const med_int nquad4 = 4;
48  /* new coordinates (step 1) for nodes 13, 14 and 15 */
49  const med_float new_coordinates_step1 [6] = { 12.,15., 17.,15., 22.,15.};
50  const char profile1name[MED_NAME_SIZE+1] = "UPPER_QUAD4_PROFILE";
51  const med_int profile1[3] = {13, 14, 15};
52  const med_int profile1size = 3;
53  /* new coordinates (step 2) for nodes 8, 9 and 10 */
54  const med_float new_coordinates_step2 [6] = { 12.,10., 17.,10., 22.,10.};
55  const char profile2name[MED_NAME_SIZE+1] = "MIDDLE_QUAD4_PROFILE";
56  const med_int profile2[3] = {8, 9, 10};
57  const med_int profile2size = 3;
58  int ret=-1;
59 
60 
61  /* open MED file */
62  fid = MEDfileOpen("UsesCase_MEDmesh_6.med",MED_ACC_CREAT);
63  if (fid < 0) {
64  MESSAGE("ERROR : file creation ...");
65  goto ERROR;
66  }
67 
68  /* write a comment in the file */
69  if (MEDfileCommentWr(fid,"A 2D unstructured mesh : 15 nodes, 12 cells") < 0) {
70  MESSAGE("ERROR : write file description ...");
71  goto ERROR;
72  }
73 
74  /* create the profiles in the file */
75  if (MEDprofileWr(fid, profile1name, profile1size, profile1 ) < 0) {
76  MESSAGE("ERROR : create profile ...");
77  goto ERROR;
78  }
79 
80  if (MEDprofileWr(fid, profile2name, profile2size, profile2 ) < 0) {
81  MESSAGE("ERROR : create profile ...");
82  goto ERROR;
83  }
84 
85  /* mesh creation : a 2D unstructured mesh */
86  if (MEDmeshCr(fid, meshname, spacedim, meshdim, MED_UNSTRUCTURED_MESH,
87  "A 2D unstructured mesh","",MED_SORT_DTIT,MED_CARTESIAN, axisname, unitname) < 0) {
88  MESSAGE("ERROR : mesh creation ...");
89  goto ERROR;
90  }
91 
92  /* initial nodes coordinates in a cartesian axis in full interlace mode
93  (X1,Y1, X2,Y2, X3,Y3, ...)
94  */
98  nnodes, initial_coordinates) < 0) {
99  MESSAGE("ERROR : nodes coordinates ...");
100  goto ERROR;
101  }
102 
103  /* cells connectiviy is defined in nodal mode */
108  ntria3, triaconnectivity) < 0) {
109  MESSAGE("ERROR : triangular cells connectivity ...");
110  goto ERROR;
111  }
112 
117  nquad4, quadconnectivity) < 0) {
118  MESSAGE("ERROR : quadrangular cells connectivity ...");
119  goto ERROR;
120  }
121 
122  /*
123  * Mesh deformation (nodes coordinates) in 2 steps
124  * The nodes modified are identified by a profile
125  */
126  /* STEP 1 : dt1 = 5.5, it = 1*/
127  if (MEDmeshNodeCoordinateWithProfileWr(fid, meshname, 1, 1, 5.5,
128  MED_COMPACT_STMODE, profile1name,
130  nnodes, new_coordinates_step1 ) < 0) {
131  MESSAGE("ERROR : nodes coordinates ...");
132  goto ERROR;
133  }
134  /* STEP 2 : dt2 = 8.9, it = 1*/
135  if (MEDmeshNodeCoordinateWithProfileWr(fid, meshname, 2, 1, 8.9,
136  MED_COMPACT_STMODE, profile2name,
138  nnodes, new_coordinates_step2 ) < 0) {
139  MESSAGE("ERROR : nodes coordinates ...");
140  goto ERROR;
141  }
142 
143  /* create family 0 : by default, all mesh entities family number is 0 */
144  if (MEDfamilyCr(fid, meshname,MED_NO_NAME, 0, 0, MED_NO_GROUP) < 0) {
145  MESSAGE("ERROR : familly 0 creation ...");
146  goto ERROR;
147  }
148 
149  ret=0;
150  ERROR:
151 
152  /* close MED file */
153  if (MEDfileClose(fid) < 0) {
154  MESSAGE("ERROR : close file ...");
155  ret=-1;
156  }
157 
158  return ret;
159 }
MED_CARTESIAN
Definition: med.h:258
MED_NO_GROUP
#define MED_NO_GROUP
Definition: med.h:289
MED_TRIA3
#define MED_TRIA3
Definition: med.h:203
MED_FULL_INTERLACE
Definition: med.h:96
main
int main(int argc, char **argv)
Definition: UsesCase_MEDmesh_6.c:31
MED_SORT_DTIT
Definition: med.h:309
MEDmeshNodeCoordinateWithProfileWr
MEDC_EXPORT med_err MEDmeshNodeCoordinateWithProfileWr(const med_idt fid, const char *const meshname, const med_int numdt, const med_int numit, const med_float dt, const med_storage_mode storagemode, const char *const profilename, const med_switch_mode switchmode, const med_int dimselect, const med_int nentity, const med_float *const coordinates)
Cette routine permet d'écrire dans un maillage le tableau des coordonnées des noeuds,...
Definition: MEDmeshNodeCoordinateWithProfileWr.c:46
MEDmeshCr
MEDC_EXPORT med_err MEDmeshCr(const med_idt fid, const char *const meshname, const med_int spacedim, const med_int meshdim, const med_mesh_type meshtype, const char *const description, const char *const dtunit, const med_sorting_type sortingtype, const med_axis_type axistype, const char *const axisname, const char *const axisunit)
Cette routine permet de créer un maillage dans un fichier.
Definition: MEDmeshCr.c:45
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
MED_NODAL
Definition: med.h:255
med_idt
hid_t med_idt
Definition: med.h:331
MED_CELL
Definition: med.h:143
MEDfileCommentWr
MEDC_EXPORT med_err MEDfileCommentWr(const med_idt fid, const char *const comment)
Ecriture d'un descripteur dans un fichier MED.
Definition: MEDfileCommentWr.c:34
MESSAGE
#define MESSAGE(chaine)
Definition: med_utils.h:324
med_int
int med_int
Definition: med.h:342
MEDfamilyCr
MEDC_EXPORT med_err MEDfamilyCr(const med_idt fid, const char *const meshname, const char *const familyname, const med_int familynumber, const med_int ngroup, const char *const groupname)
Cette routine permet la création d'une famille portant sur les entités d'un maillage.
Definition: MEDfamilyCr.c:40
med.h
med_float
double med_float
Definition: med.h:336
MED_NO_DT
#define MED_NO_DT
Definition: med.h:320
MEDmeshElementConnectivityWithProfileWr
MEDC_EXPORT med_err MEDmeshElementConnectivityWithProfileWr(const med_idt fid, const char *const meshname, const med_int numdt, const med_int numit, const med_float dt, const med_entity_type entitype, const med_geometry_type geotype, const med_connectivity_mode cmode, const med_storage_mode storagemode, const char *const profilename, const med_switch_mode switchmode, const med_int dimselect, const med_int nentity, const med_int *const connectivity)
Cette routine permet d'écrire dans un maillage le tableau des connectivités pour un type géométrique ...
Definition: MEDmeshElementConnectivityWithProfileWr.c:45
MED_ACC_CREAT
Definition: med.h:123
MEDprofileWr
MEDC_EXPORT med_err MEDprofileWr(const med_idt fid, const char *const profilename, const med_int profilesize, const med_int *const profilearray)
Cette routine permet d'écrire un profil dans un fichier MED.
Definition: MEDprofileWr.c:40
MED_NAME_SIZE
#define MED_NAME_SIZE
Definition: med.h:81
MED_UNSTRUCTURED_MESH
Definition: med.h:131
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_COMPACT_STMODE
Definition: med.h:110
MED_NO_PROFILE
#define MED_NO_PROFILE
Definition: med.h:281
MED_NO_IT
#define MED_NO_IT
Definition: med.h:321
med_utils.h
MED_QUAD4
#define MED_QUAD4
Definition: med.h:204
MED_NO_NAME
#define MED_NO_NAME
Definition: med.h:268