MED fichier
UsesCase_MEDmesh_8.c
Aller à la documentation de ce fichier.
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  * Use case 8 : read a 2D unstructured mesh with coordinates nodes
20  * modifications (generic approach)
21  */
22 
23 #include <med.h>
24 #define MESGERR 1
25 #include <med_utils.h>
26 
27 #include <string.h>
28 
29 int main (int argc, char **argv) {
30  med_idt fid;
31  med_int nmesh;
32  char meshname[MED_NAME_SIZE+1]="";
33  char meshdescription[MED_COMMENT_SIZE+1]="";
34  med_int meshdim;
35  med_int spacedim;
36  med_sorting_type sortingtype;
37  med_int nstep;
38  med_mesh_type meshtype;
39  med_axis_type axistype;
40  char *axisname;
41  char *unitname;
42  char dtunit[MED_SNAME_SIZE+1]="";
43  med_float *coordinates = NULL;
44  med_int ngeo = 0;
45  med_int nnodes = 0;
46  med_int *connectivity = NULL;
47  med_bool coordinatechangement;
48  med_bool geotransformation;
49  int i, it, j;
50  med_int profilesize;
51  char profilename[MED_NAME_SIZE+1]="";
52  med_int numdt, numit;
53  med_float dt;
54  med_geometry_type geotype;
56  int ret=-1;
57 
58  /* open MED file with READ ONLY access mode */
59  fid = MEDfileOpen("UsesCase_MEDmesh_6.med",MED_ACC_RDONLY);
60  if (fid < 0) {
61  MESSAGE("ERROR : open file in READ ONLY ACCESS mode ...");
62  goto ERROR;
63  }
64 
65 
66  /* read how many mesh in the file */
67  if ((nmesh = MEDnMesh(fid)) < 0) {
68  MESSAGE("ERROR : read how many mesh ...");
69  goto ERROR;
70  }
71 
72  for (i=0;i<nmesh;i++) {
73 
74  /* read computation space dimension */
75  if ((spacedim = MEDmeshnAxis(fid, i+1)) < 0) {
76  MESSAGE("ERROR : read computation space dimension ...");
77  goto ERROR;
78  }
79 
80  /* memory allocation */
81  if ((axisname = (char*) malloc(MED_SNAME_SIZE*spacedim+1)) == NULL) {
82  MESSAGE("ERROR : memory allocation ...");
83  goto ERROR;
84  }
85  if ((unitname = (char*) malloc(MED_SNAME_SIZE*spacedim+1)) == NULL) {
86  MESSAGE("ERROR : memory allocation ...");
87  goto ERROR;
88  }
89 
90  /* read mesh informations : meshname, mesh dimension, mesh type ... */
91  if (MEDmeshInfo(fid, i+1, meshname, &spacedim, &meshdim, &meshtype, meshdescription,
92  dtunit, &sortingtype, &nstep,
93  &axistype, axisname, unitname) < 0) {
94  MESSAGE("ERROR : mesh info ...")
95  free(axisname);
96  free(unitname);
97  goto ERROR;
98  }
99  free(axisname);
100  free(unitname);
101 
102 
103  /* read how many nodes in the mesh */
104  if ((nnodes = MEDmeshnEntity(fid, meshname, MED_NO_DT, MED_NO_IT, MED_NODE, MED_NONE,
105  MED_COORDINATE, MED_NO_CMODE,&coordinatechangement,
106  &geotransformation)) < 0) {
107  MESSAGE("ERROR : number of nodes ...");
108  goto ERROR;
109  }
110 
111  /* read mesh nodes coordinates */
112  if ((coordinates = (med_float*) malloc(sizeof(med_float)*nnodes*spacedim)) == NULL) {
113  MESSAGE("ERROR : memory allocation ...");
114  goto ERROR;
115  }
116 
118  coordinates) < 0) {
119  MESSAGE("ERROR : nodes coordinates ...");
120  free(coordinates);
121  goto ERROR;
122  }
123 
124 
125  /* read all MED geometry cell types */
126  for (it=1; it<=MED_N_CELL_FIXED_GEO; it++) {
127 
128  geotype = geotypes[it];
129 
130  if ((ngeo = MEDmeshnEntity(fid, meshname, MED_NO_DT, MED_NO_IT, MED_CELL,geotype,
131  MED_CONNECTIVITY, MED_NODAL, &coordinatechangement,
132  &geotransformation)) < 0) {
133  MESSAGE("ERROR : number of cell ...");
134  ISCRUTE_int(geotype);
135  goto ERROR;
136  }
137 
138  if (ngeo) {
139  /* read cells connectivity in the mesh */
140  if ((connectivity = (med_int *) malloc(sizeof(med_int)*ngeo*(geotype%100))) == NULL) {
141  MESSAGE("ERROR : memory allocation ...");
142  goto ERROR;
143  }
144 
146  geotype, MED_NODAL, MED_FULL_INTERLACE, connectivity) < 0) {
147  MESSAGE("ERROR : cell connectivity ...");
148  ISCRUTE_int(geotype);
149  free(connectivity);
150  goto ERROR;
151  }
152 
153  /* memory deallocation */
154  free(connectivity);
155  connectivity = NULL;
156  }
157  }
158 
159 
160  /* read nodes coordinates changements step by step */
161  for (it=1;it<nstep;it++) {
162 
163  if (MEDmeshComputationStepInfo(fid, meshname, it+1,
164  &numdt, &numit, &dt) < 0) {
165  MESSAGE("ERROR : Computing step info ...");
166  SSCRUTE(meshname);
167  goto ERROR;
168  }
169 
170  /* test changement : for nodes coordinates */
171  if ((nnodes = MEDmeshnEntityWithProfile(fid, meshname, numdt, numit,
174  MED_GLOBAL_STMODE, profilename, &profilesize,
175  &coordinatechangement, &geotransformation)) < 0) {
176  MESSAGE("ERROR : number of nodes ...");
177  goto ERROR;
178  }
179 
180  /* if only coordinates have changed, then read the new coordinates */
181  /* to verify if there is a matrix transformation => UsesCase_MEDmesh12. */
182  if (coordinatechangement && geotransformation) {
183  if (MEDmeshNodeCoordinateWithProfileRd(fid, meshname, numdt, numit,
184  MED_GLOBAL_STMODE,profilename,
186  coordinates) < 0) {
187  MESSAGE("ERROR : nodes coordinates ...");
188  free(coordinates);
189  goto ERROR;
190  }
191  }
192 
193  }
194  }
195 
196  free(coordinates);
197 
198  ret=0;
199  ERROR:
200 
201  /* close MED file */
202  if (MEDfileClose(fid) < 0) {
203  MESSAGE("ERROR : close file");
204  ret=-1;
205  }
206 
207 
208  return ret;
209 }
210 
MED_FULL_INTERLACE
Definition: med.h:96
MED_COMMENT_SIZE
#define MED_COMMENT_SIZE
Definition: med.h:79
MEDmeshnEntity
MEDC_EXPORT med_int MEDmeshnEntity(const med_idt fid, const char *const meshname, const med_int numdt, const med_int numit, const med_entity_type entitype, const med_geometry_type geotype, const med_data_type datatype, const med_connectivity_mode cmode, med_bool *const changement, med_bool *const transformation)
Cette routine permet de lire le nombre d'entités dans un maillage pour une étape de calcul donnée.
Definition: MEDmeshnEntity.c:44
MEDmeshComputationStepInfo
MEDC_EXPORT med_err MEDmeshComputationStepInfo(const med_idt fid, const char *const meshname, const int csit, med_int *const numdt, med_int *const numit, med_float *const dt)
Cette routine permet de lire les informations relatives à une étape de calcul d'un maillage.
Definition: MEDmeshComputationStepInfo.c:38
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_geometry_type
int med_geometry_type
Definition: med.h:194
MED_SNAME_SIZE
#define MED_SNAME_SIZE
Definition: med.h:82
MED_NODAL
Definition: med.h:255
ISCRUTE_int
#define ISCRUTE_int(entier)
Definition: med_utils.h:314
med_idt
hid_t med_idt
Definition: med.h:331
MED_ACC_RDONLY
Definition: med.h:120
main
int main(int argc, char **argv)
Definition: UsesCase_MEDmesh_8.c:29
med_sorting_type
med_sorting_type
Definition: med.h:309
MED_NO_CMODE
Definition: med.h:255
MED_CELL
Definition: med.h:143
MESSAGE
#define MESSAGE(chaine)
Definition: med_utils.h:324
med_int
int med_int
Definition: med.h:342
MED_GET_CELL_GEOMETRY_TYPE
med_geometry_type MED_GET_CELL_GEOMETRY_TYPE[MED_N_CELL_FIXED_GEO+2]
Definition: MEDiterators.c:55
med.h
med_bool
med_bool
Definition: med.h:260
med_float
double med_float
Definition: med.h:336
MED_NO_DT
#define MED_NO_DT
Definition: med.h:320
MED_NONE
#define MED_NONE
Definition: med.h:231
MED_CONNECTIVITY
Definition: med.h:149
MEDmeshElementConnectivityRd
MEDC_EXPORT med_err MEDmeshElementConnectivityRd(const med_idt fid, const char *const meshname, const med_int numdt, const med_int numit, const med_entity_type entitype, const med_geometry_type geotype, const med_connectivity_mode cmode, const med_switch_mode switchmode, med_int *const connectivity)
Cette routine permet de lire dans un maillage le tableau des connectivités pour un type géométrique d...
Definition: MEDmeshElementConnectivityRd.c:40
MED_NODE
Definition: med.h:143
MEDmeshnAxis
MEDC_EXPORT med_int MEDmeshnAxis(const med_idt fid, const int meshit)
Cette routine permet de lire dans un maillage le nombre d'axes du repère des coordonnées des noeuds.
Definition: MEDmeshnAxis.c:35
MED_N_CELL_FIXED_GEO
#define MED_N_CELL_FIXED_GEO
Definition: med.h:239
med_mesh_type
med_mesh_type
Definition: med.h:131
SSCRUTE
#define SSCRUTE(chaine)
Definition: med_utils.h:323
MED_GLOBAL_STMODE
Definition: med.h:109
MEDmeshNodeCoordinateRd
MEDC_EXPORT med_err MEDmeshNodeCoordinateRd(const med_idt fid, const char *const meshname, const med_int numdt, const med_int numit, const med_switch_mode switchmode, med_float *const coordinates)
Cette routine permet de lire dans un maillage le tableau des coordonnées des noeuds,...
Definition: MEDmeshNodeCoordinateRd.c:37
MED_NAME_SIZE
#define MED_NAME_SIZE
Definition: med.h:81
MEDnMesh
MEDC_EXPORT med_int MEDnMesh(const med_idt fid)
Cette routine permet de lire le nombre de maillages dans un fichier.
Definition: MEDnMesh.c:34
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
MEDmeshnEntityWithProfile
MEDC_EXPORT med_int MEDmeshnEntityWithProfile(const med_idt fid, const char *const meshname, const med_int numdt, const med_int numit, const med_entity_type entitype, const med_geometry_type geotype, const med_data_type datatype, const med_connectivity_mode cmode, const med_storage_mode storagemode, char *const profilename, med_int *const profilesize, med_bool *const changement, med_bool *const transformation)
Cette routine permet de lire le nombre d'entités dans un maillage pour une étape de calcul et un prof...
Definition: MEDmeshnEntityWithProfile.c:47
med_axis_type
med_axis_type
Definition: med.h:258
MEDmeshInfo
MEDC_EXPORT med_err MEDmeshInfo(const med_idt fid, const int meshit, char *const meshname, med_int *const spacedim, med_int *const meshdim, med_mesh_type *const meshtype, char *const description, char *const dtunit, med_sorting_type *const sortingtype, med_int *const nstep, med_axis_type *const axistype, char *const axisname, char *const axisunit)
Cette routine permet de lire les informations relatives à un maillage dans un fichier.
Definition: MEDmeshInfo.c:43
MED_NO_IT
#define MED_NO_IT
Definition: med.h:321
MED_COORDINATE
Definition: med.h:149
MEDmeshNodeCoordinateWithProfileRd
MEDC_EXPORT med_err MEDmeshNodeCoordinateWithProfileRd(const med_idt fid, const char *const meshname, const med_int numdt, const med_int numit, const med_storage_mode storagemode, const char *const profilename, const med_switch_mode switchmode, const med_int dimselect, med_float *const coordinates)
Cette routine permet de lire dans un maillage le tableau des coordonnées des noeuds,...
Definition: MEDmeshNodeCoordinateWithProfileRd.c:40
med_utils.h