UsesCase_MEDmesh_15.c
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/* 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/>.
*/
/*
* How to create an unstructured mesh with polyhedrons
*
* Use case 15 : a 3D unstructured mesh with 2 polyhedrons
*/
#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] = "3D Unstructured Mesh With 2 polyhedrons";
const med_int spacedim = 3;
const med_int meshdim = 3;
/* 12345678901234561234567890123456 */
const char axisname[3*MED_SNAME_SIZE+1] = "x y z ";
const char unitname[3*MED_SNAME_SIZE+1] = "cm cm cm ";
const med_int nnodes = 16;
const med_float coordinates[3 * 16] = {
/* [ 1 ] */ -10.0, -10.0, +0.0,
/* [ 2 ] */ -10.0, -10.0, +10.,
/* [ 3 ] */ -10.0, +10.0, +10.,
/* [ 4 ] */ -10.0, +10.0, +0.0,
/* [ 5 ] */ +10.0, -10.0, +0.0,
/* [ 6 ] */ +10.0, -10.0, +10.,
/* [ 7 ] */ +10.0, +10.0, +10.,
/* [ 8 ] */ +10.0, +10.0, +0.0,
/* [ 9 ] */ -10.0, +0.0 , +10.0,
/* [ 10 ] */ -10.0, +0.0 , +0.0 ,
/* [ 11 ] */ +0.0 , -10.0 , +10.0,
/* [ 12 ] */ +0.0 , -10.0 , +0.0 ,
/* [ 13 ] */ +0.0 , +10.0 , +10.0,
/* [ 14 ] */ +10.0, +0.0 , +10.0,
/* [ 15 ] */ +0.0 , +10.0 , +0.0 ,
/* [ 16 ] */ +10.0, +0.0 , +0.0
};
/*Il y a 58 numéros de noeuds dans le tableau de connextivité*/
const med_int connectivity[26+32] = {
/* - Poly 1 : */
/* - Face 1 : */ 1, 2 , 9 , 3 , 10,
/* - Face 2 : */ 1, 12 , 5 , 6 , 11, 2,
/* - Face 3 : */ 2, 11 , 6 , 3 , 9 ,
/* - Face 4 : */ 3, 6 , 5 ,
/* - Face 5 : */ 3, 5 , 10 ,
/* - Face 6 : */ 1, 10 , 5 , 12,
/* - Poly 2 : */
/* - Face 1 : */ 3, 13 , 7 , 8 , 15, 4,
/* - Face 2 : */ 3, 4 , 10 ,
/* - Face 3 : */ 4, 15 , 8 , 16 , 5, 10,
/* - Face 4 : */ 3, 6 , 14 , 7 , 13,
/* - Face 5 : */ 5, 16 , 8 , 7 , 14, 6,
/* - Face 6 : */ 3, 10 , 5 ,
/* - Face 7 : */ 3, 5 , 6
};
/* Il y a deux polyèdres, le premier a 6 faces, le second 7 faces */
/* La face 7 du Poly 2 utilise 59-56=3 noeuds */
const med_int nodeindex[6+7+1] = { 1, 6, 12, 17, 20, 23,
27, 33, 36, 42, 47, 53, 56, 59};
/* Il y a un total de 13 faces */
/* NodeIndexSize == Nbre De Faces +1 */
const med_int nodeindexSize = 6+7+1;
/* Il y a deux polyèdres, le premier a 6 faces, le second 7 faces */
/* Pn+1 == FaceIndex[n+1]== NodeIndexSize== Nbre De Faces +1 */
const med_int faceindex[3] = {1,7,14};
const med_int faceindexSize = 3;
/* open MED file */
fid = MEDfileOpen("UsesCase_MEDmesh_15.med",
MED_ACC_CREAT);
if (fid < 0) {
MESSAGE("ERROR : file creation ...");
return -1;
}
/* write a comment in the file */
if (MEDfileCommentWr(fid,
"A 3D unstructured mesh : 2 polyhedrons") < 0) {
MESSAGE("ERROR : write file description ...");
return -1;
}
/* mesh creation : a 3D unstructured mesh */
if (MEDmeshCr(fid, meshname, spacedim, meshdim,
MED_UNSTRUCTURED_MESH, "A 3D mesh with 2 polyhedron",
"", MED_SORT_DTIT,
MED_CARTESIAN, axisname, unitname) < 0) {
MESSAGE("ERROR : mesh creation ...");
return -1;
}
/* nodes coordinates in a cartesian axis in full interlace mode
(X1,Y1, X2,Y2, X3,Y3, ...) with no iteration and computation step
*/
if (MEDmeshNodeCoordinateWr(fid, meshname,
MED_NO_DT, MED_NO_IT, MED_UNDEF_DT,
MED_FULL_INTERLACE, nnodes, coordinates) < 0) {
MESSAGE("ERROR : nodes coordinates ...");
return -1;
}
/* cells connectiviy is defined in nodal mode */
if (MEDmeshPolyhedronWr(fid, meshname,
MED_NO_DT, MED_NO_IT, MED_UNDEF_DT,
MED_CELL, MED_NODAL,
faceindexSize, faceindex,
nodeindexSize, nodeindex,
connectivity) < 0) {
MESSAGE("ERROR : polyhedron connectivity ...");
return -1;
}
/* create family 0 : by default, all mesh entities family number is 0 */
if (MEDfamilyCr(fid, meshname, "", 0, 0, "") < 0) {
MESSAGE("ERROR : family 0 creation ...");
return -1;
}
/* close MED file */
if (MEDfileClose(fid) < 0) {
MESSAGE("ERROR : close file ...");
return -1;
}
return 0;
}
MED_CARTESIAN
Definition: med.h:258
MED_FULL_INTERLACE
Definition: med.h:96
MED_SORT_DTIT
Definition: med.h:309
MEDmeshPolyhedronWr
MEDC_EXPORT med_err MEDmeshPolyhedronWr(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_connectivity_mode cmode, const med_int faceindexsize, const med_int *const faceindex, const med_int nodeindexsize, const med_int *const nodeindex, const med_int *const connectivity)
Cette routine permet l'écriture dans un maillage des connectivités de polyèdres.
Definition: MEDmeshPolyhedronWr.c:47
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
MEDmeshNodeCoordinateWr
MEDC_EXPORT med_err MEDmeshNodeCoordinateWr(const med_idt fid, const char *const meshname, const med_int numdt, const med_int numit, const med_float dt, const med_switch_mode switchmode, const med_int nentity, const med_float *const coordinates)
Cette routine permet d'écrire dans un maillage le tableau des coordonnées des noeuds,...
Definition: MEDmeshNodeCoordinateWr.c:45
MED_ACC_CREAT
Definition: med.h:123
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_UNDEF_DT
#define MED_UNDEF_DT
Definition: med.h:322
MED_NO_IT
#define MED_NO_IT
Definition: med.h:321
main
int main(int argc, char **argv)
Definition: UsesCase_MEDmesh_15.c:30
med_utils.h