UsesCase_MEDmesh_6.c
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/* This file is part of MED.
*
* COPYRIGHT (C) 1999 - 2020 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/>.
*/
/*
* How to create an unstructured mesh
*
* Use case 6 : a 2D unstructured mesh with the following features
* computin steps, profiles and nodes coordinates evolution.
*/
#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 med_int spacedim = 2;
const med_int meshdim = 2;
const char axisname[2*MED_SNAME_SIZE+1] = "x y ";
const char unitname[2*MED_SNAME_SIZE+1] = "cm cm ";
const med_float initial_coordinates[30] = { 2.,1., 7.,1., 12.,1., 17.,1., 22.,1.,
2.,6., 7.,6., 12.,6., 17.,6., 22.,6.,
2.,11., 7.,11., 12.,11., 17.,11., 22.,11.};
const med_int nnodes = 15;
const med_int triaconnectivity[24] = { 1,7,6, 2,7,1, 3,7,2, 8,7,3,
13,7,8, 12,7,13, 11,7,12, 6,7,11 };
const med_int ntria3 = 8;
const med_int quadconnectivity[16] = {3,4,9,8, 4,5,10,9,
15,14,9,10, 13,8,9,14};
const med_int nquad4 = 4;
/* new coordinates (step 1) for nodes 13, 14 and 15 */
const med_float new_coordinates_step1 [6] = { 12.,15., 17.,15., 22.,15.};
const char profile1name[MED_NAME_SIZE+1] = "UPPER_QUAD4_PROFILE";
const med_int profile1[3] = {13, 14, 15};
const med_int profile1size = 3;
/* new coordinates (step 2) for nodes 8, 9 and 10 */
const med_float new_coordinates_step2 [6] = { 12.,10., 17.,10., 22.,10.};
const char profile2name[MED_NAME_SIZE+1] = "MIDDLE_QUAD4_PROFILE";
const med_int profile2[3] = {8, 9, 10};
const med_int profile2size = 3;
int ret=-1;
/* open MED file */
fid = MEDfileOpen("UsesCase_MEDmesh_6.med",MED_ACC_CREAT);
if (fid < 0) {
MESSAGE("ERROR : file creation ...");
goto ERROR;
}
/* write a comment in the file */
if (MEDfileCommentWr(fid,"A 2D unstructured mesh : 15 nodes, 12 cells") < 0) {
MESSAGE("ERROR : write file description ...");
goto ERROR;
}
/* create the profiles in the file */
if (MEDprofileWr(fid, profile1name, profile1size, profile1 ) < 0) {
MESSAGE("ERROR : create profile ...");
goto ERROR;
}
if (MEDprofileWr(fid, profile2name, profile2size, profile2 ) < 0) {
MESSAGE("ERROR : create profile ...");
goto ERROR;
}
/* mesh creation : a 2D unstructured mesh */
if (MEDmeshCr(fid, meshname, spacedim, meshdim, MED_UNSTRUCTURED_MESH,
"A 2D unstructured mesh","",MED_SORT_DTIT,MED_CARTESIAN, axisname, unitname) < 0) {
MESSAGE("ERROR : mesh creation ...");
goto ERROR;
}
/* initial nodes coordinates in a cartesian axis in full interlace mode
(X1,Y1, X2,Y2, X3,Y3, ...)
*/
if (MEDmeshNodeCoordinateWithProfileWr(fid, meshname, MED_NO_DT, MED_NO_IT, 0.0,
MED_COMPACT_STMODE, MED_NO_PROFILE,
MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
nnodes, initial_coordinates) < 0) {
MESSAGE("ERROR : nodes coordinates ...");
goto ERROR;
}
/* cells connectiviy is defined in nodal mode */
if (MEDmeshElementConnectivityWithProfileWr(fid, meshname, MED_NO_DT, MED_NO_IT, 0.0,
MED_CELL, MED_TRIA3, MED_NODAL,
MED_COMPACT_STMODE, MED_NO_PROFILE,
MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
ntria3, triaconnectivity) < 0) {
MESSAGE("ERROR : triangular cells connectivity ...");
goto ERROR;
}
if (MEDmeshElementConnectivityWithProfileWr(fid, meshname, MED_NO_DT, MED_NO_IT, 0.0,
MED_CELL, MED_QUAD4, MED_NODAL,
MED_COMPACT_STMODE, MED_NO_PROFILE,
MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
nquad4, quadconnectivity) < 0) {
MESSAGE("ERROR : quadrangular cells connectivity ...");
goto ERROR;
}
/*
* Mesh deformation (nodes coordinates) in 2 steps
* The nodes modified are identified by a profile
*/
/* STEP 1 : dt1 = 5.5, it = 1*/
if (MEDmeshNodeCoordinateWithProfileWr(fid, meshname, 1, 1, 5.5,
MED_COMPACT_STMODE, profile1name,
MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
nnodes, new_coordinates_step1 ) < 0) {
MESSAGE("ERROR : nodes coordinates ...");
goto ERROR;
}
/* STEP 2 : dt2 = 8.9, it = 1*/
if (MEDmeshNodeCoordinateWithProfileWr(fid, meshname, 2, 1, 8.9,
MED_COMPACT_STMODE, profile2name,
MED_FULL_INTERLACE, MED_ALL_CONSTITUENT,
nnodes, new_coordinates_step2 ) < 0) {
MESSAGE("ERROR : nodes coordinates ...");
goto ERROR;
}
/* create family 0 : by default, all mesh entities family number is 0 */
if (MEDfamilyCr(fid, meshname,MED_NO_NAME, 0, 0, MED_NO_GROUP) < 0) {
MESSAGE("ERROR : familly 0 creation ...");
goto ERROR;
}
ret=0;
ERROR:
/* close MED file */
if (MEDfileClose(fid) < 0) {
MESSAGE("ERROR : close file ...");
ret=-1;
}
return ret;
}
main
int main(int argc, char **argv)
Definition UsesCase_MEDmesh_6.c:31
MED_NAME_SIZE
#define MED_NAME_SIZE
Definition build.python3.12/include/med.h:81
MED_FULL_INTERLACE
@ MED_FULL_INTERLACE
Definition build.python3.12/include/med.h:96
MED_SNAME_SIZE
#define MED_SNAME_SIZE
Definition build.python3.12/include/med.h:82
MED_QUAD4
#define MED_QUAD4
Definition build.python3.12/include/med.h:204
MED_COMPACT_STMODE
@ MED_COMPACT_STMODE
Definition build.python3.12/include/med.h:110
MED_NO_GROUP
#define MED_NO_GROUP
Definition build.python3.12/include/med.h:284
MED_TRIA3
#define MED_TRIA3
Definition build.python3.12/include/med.h:203
MED_CARTESIAN
@ MED_CARTESIAN
Definition build.python3.12/include/med.h:258
MED_SORT_DTIT
@ MED_SORT_DTIT
Definition build.python3.12/include/med.h:300
MED_ALL_CONSTITUENT
#define MED_ALL_CONSTITUENT
Definition build.python3.12/include/med.h:293
MED_UNSTRUCTURED_MESH
@ MED_UNSTRUCTURED_MESH
Definition build.python3.12/include/med.h:131
med_int
int med_int
Definition build.python3.12/include/med.h:333
MED_NO_DT
#define MED_NO_DT
Definition build.python3.12/include/med.h:311
MED_NO_IT
#define MED_NO_IT
Definition build.python3.12/include/med.h:312
MED_NO_PROFILE
#define MED_NO_PROFILE
Definition build.python3.12/include/med.h:279
MED_CELL
@ MED_CELL
Definition build.python3.12/include/med.h:143
med_float
double med_float
Definition build.python3.12/include/med.h:327
MED_ACC_CREAT
@ MED_ACC_CREAT
Definition build.python3.12/include/med.h:123
med_idt
hid_t med_idt
Definition build.python3.12/include/med.h:322
MED_NODAL
@ MED_NODAL
Definition build.python3.12/include/med.h:255
MED_NO_NAME
#define MED_NO_NAME
Definition build.python3.12/include/med.h:266
MESSAGE
#define MESSAGE(chaine)
Definition build.python3.12/include/med_utils.h:324
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
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
MEDfileClose
MEDC_EXPORT med_err MEDfileClose(med_idt fid)
Fermeture d'un fichier MED.
Definition MEDfileClose.c:30
MEDfileOpen
MEDC_EXPORT med_idt MEDfileOpen(const char *const filename, const med_access_mode accessmode)
Ouverture d'un fichier MED.
Definition MEDfileOpen.c:42
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
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
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
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