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UsesCase_MEDmesh_10.f
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1 C* This file is part of MED.
2 C*
3 C* COPYRIGHT (C) 1999 - 2019 EDF R&D, CEA/DEN
4 C* MED is free software: you can redistribute it and/or modify
5 C* it under the terms of the GNU Lesser General Public License as published by
6 C* the Free Software Foundation, either version 3 of the License, or
7 C* (at your option) any later version.
8 C*
9 C* MED is distributed in the hope that it will be useful,
10 C* but WITHOUT ANY WARRANTY; without even the implied warranty of
11 C* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 C* GNU Lesser General Public License for more details.
13 C*
14 C* You should have received a copy of the GNU Lesser General Public License
15 C* along with MED. If not, see <http://www.gnu.org/licenses/>.
16 C*
17
18 C******************************************************************************
19 C * How to create an unstructured mesh
20 C * Use case 10 : write a 2D unstructured mesh with 15 nodes, 8 triangular
21 C * cells, 4 quadrangular cells, and families
22 C *
23 C *****************************************************************************
24 program usescase_medmesh_10
25 C
26 implicit none
27 include 'med.hf77'
28 C
29 C
30 integer cret
31 integer*8 fid
32
33 C space dim, mesh dim
34 integer sdim, mdim
35 C axis name, unit name
36 character*16 axname(2), unname(2)
37 C mesh name, family name, time step unit, file name
38 character*64 mname, fyname, dtunit, finame
39 C mesh type, sorting type, grid type
40 integer mtype, stype, grtype
41 C family number, number of group
42 integer fnum, ngro
43 C group name
44 character*80 gname
45 C coordinates, date
46 real*8 coords(30), dt
47 integer nnodes, ntria3, nquad4
48 C triangular and quadrangular cells connectivity
49 integer tricon(24), quacon(16)
50 C family numbers
51 integer fanbrs(15)
52 C comment 1, mesh description
53 character*200 cmt1, mdesc
54 C
55 parameter(sdim = 2, mdim = 2)
56 parameter(mname = "2D unstructured mesh")
57 parameter(fyname = "BOUNDARY_VERTICES")
58 parameter(dtunit = " ")
59 parameter(dt = 0.0d0)
60 parameter(finame = "UsesCase_MEDmesh_10.med")
61 parameter(gname = "MESH_BOUNDARY_VERTICES")
62 parameter(nnodes = 15, ntria3 = 8, nquad4 = 4)
63 parameter(cmt1 ="A 2D unstructured mesh : 15 nodes, 12 cells")
64 parameter(mtype=med_unstructured_mesh, stype=med_sort_dtit )
65 parameter(mdesc = "A 2D unstructured mesh")
66 parameter(grtype=med_cartesian_grid)
67 C
68 data axname /"x" ,"y" /
69 data unname /"cm","cm"/
70 data coords /2.,1., 7.,1., 12.,1., 17.,1., 22.,1.,
71 & 2.,6., 7.,6., 12.,6., 17.,6., 22.,6.,
72 & 2.,11., 7.,11., 12.,11., 17.,11., 22.,11./
73 data tricon /1,7,6, 2,7,1, 3,7,2, 8,7,3,
74 & 13,7,8, 12,7,13, 11,7,12, 6,7,11/
75 data quacon /3,4,9,8, 4,5,10,9,
76 & 15,14,9,10, 13,8,9,14/
77 data fanbrs /1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1/
78 C
79 C
80 C file creation
81 call mfiope(fid,finame,med_acc_creat,cret)
82 if (cret .ne. 0 ) then
83 print *,'ERROR : file creation'
84 call efexit(-1)
85 endif
86 C
87 C
88 C write a comment in the file
89 call mficow(fid,cmt1,cret)
90 if (cret .ne. 0 ) then
91 print *,'ERROR : write file description'
92 call efexit(-1)
93 endif
94 C
95 C
96 C mesh creation : a 2D unstructured mesh
97 call mmhcre(fid, mname, sdim, mdim, mtype, mdesc, dtunit,
98 & stype, grtype, axname, unname, cret)
99 if (cret .ne. 0 ) then
100 print *,'ERROR : mesh creation'
101 call efexit(-1)
102 endif
103 C
104 C
105 C nodes coordinates in a cartesian axis in full interlace mode
106 C (X1,Y1, X2,Y2, X3,Y3, ...) with no iteration and computation step
107 call mmhcow(fid,mname,med_no_dt,med_no_it,dt,
108 & med_full_interlace,nnodes,coords,cret)
109 if (cret .ne. 0 ) then
110 print *,'ERROR : write nodes coordinates description'
111 call efexit(-1)
112 endif
113 C
114 C
115 C cells connectiviy is defined in nodal mode
116 call mmhcyw(fid,mname,med_no_dt,med_no_it,dt,med_cell,
117 & med_tria3,med_nodal,med_full_interlace,
118 & ntria3,tricon,cret)
119 if (cret .ne. 0 ) then
120 print *,'ERROR : triangular cells connectivity'
121 call efexit(-1)
122 endif
123 call mmhcyw(fid,mname,med_no_dt,med_no_it,dt,med_cell,
124 & med_quad4,med_nodal,med_full_interlace,
125 & nquad4,quacon,cret)
126 if (cret .ne. 0 ) then
127 print *,'ERROR : quadrangular cells connectivity'
128 call efexit(-1)
129 endif
130 C
131 C
132 C create family 0 : by default, all mesh entities family number is 0
133 call mfacre(fid,mname,med_no_name,0,0,med_no_group,cret)
134 if (cret .ne. 0 ) then
135 print *,'ERROR : create family 0'
136 call efexit(-1)
137 endif
138 C
139 C
140 C create a family for boundary vertices : by convention a nodes family number is > 0,
141 C and an element family number is < 0
142 fnum = 1
143 ngro = 1
144 call mfacre(fid, mname, fyname, fnum, ngro, gname, cret)
145 if (cret .ne. 0 ) then
146 print *,'ERROR : create family 0'
147 call efexit(-1)
148 endif
149 C
150 C
151 C write family number for nodes
152 call mmhfnw(fid, mname, med_no_dt, med_no_it, med_node, med_none,
153 & nnodes, fanbrs, cret)
154 if (cret .ne. 0 ) then
155 print *,'ERROR : nodes family numbers ...'
156 call efexit(-1)
157 endif
158 C
159 C
160 C close file
161 call mficlo(fid,cret)
162 if (cret .ne. 0 ) then
163 print *,'ERROR : close file'
164 call efexit(-1)
165 endif
166 C
167 C
168 C
169 end
170 C
mmhcow
subroutine mmhcow(fid, name, numdt, numit, dt, swm, n, coo, cret)
Definition: medmesh.f:299
mfacre
subroutine mfacre(fid, name, fname, fnum, ngro, gname, cret)
Definition: medfamily.f:19
mmhcyw
subroutine mmhcyw(fid, name, numdt, numit, dt, entype, geotype, cmode, swm, n, con, cret)
Definition: medmesh.f:578
mfiope
subroutine mfiope(fid, name, access, cret)
Definition: medfile.f:42
usescase_medmesh_10
program usescase_medmesh_10
Definition: UsesCase_MEDmesh_10.f:24
mmhfnw
subroutine mmhfnw(fid, name, numdt, numit, entype, geotype, n, num, cret)
Definition: medmesh.f:466
mmhcre
subroutine mmhcre(fid, name, sdim, mdim, mtype, desc, dtunit, stype, atype, aname, aunit, cret)
Definition: medmesh.f:20
mficow
subroutine mficow(fid, cmt, cret)
Definition: medfile.f:99
mficlo
subroutine mficlo(fid, cret)
Definition: medfile.f:82