MED fichier
usecases/f/UsesCase_MEDmesh_10.f
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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 C space dim, mesh dim
33  integer sdim, mdim
34 C axis name, unit name
35  character*16 axname(2), unname(2)
36 C mesh name, family name, time step unit, file name
37  character*64 mname, fyname, dtunit, finame
38 C mesh type, sorting type, grid type
39  integer mtype, stype, grtype
40 C family number, number of group
41  integer fnum, ngro
42 C group name
43  character*80 gname
44 C coordinates, date
45  real*8 coords(30), dt
46  integer nnodes, ntria3, nquad4
47 C triangular and quadrangular cells connectivity
48  integer tricon(24), quacon(16)
49 C family numbers
50  integer fanbrs(15)
51 C comment 1, mesh description
52  character*200 cmt1, mdesc
53 C
54  parameter(sdim = 2, mdim = 2)
55  parameter(mname = "2D unstructured mesh")
56  parameter(fyname = "BOUNDARY_VERTICES")
57  parameter(dtunit = " ")
58  parameter(dt = 0.0d0)
59  parameter(finame = "UsesCase_MEDmesh_10.med")
60  parameter(gname = "MESH_BOUNDARY_VERTICES")
61  parameter(nnodes = 15, ntria3 = 8, nquad4 = 4)
62  parameter(cmt1 ="A 2D unstructured mesh : 15 nodes, 12 cells")
63  parameter(mtype=med_unstructured_mesh, stype=med_sort_dtit )
64  parameter(mdesc = "A 2D unstructured mesh")
65  parameter(grtype=med_cartesian_grid)
66 C
67  data axname /"x" ,"y" /
68  data unname /"cm","cm"/
69  data coords /2.,1., 7.,1., 12.,1., 17.,1., 22.,1.,
70  & 2.,6., 7.,6., 12.,6., 17.,6., 22.,6.,
71  & 2.,11., 7.,11., 12.,11., 17.,11., 22.,11./
72  data tricon /1,7,6, 2,7,1, 3,7,2, 8,7,3,
73  & 13,7,8, 12,7,13, 11,7,12, 6,7,11/
74  data quacon /3,4,9,8, 4,5,10,9,
75  & 15,14,9,10, 13,8,9,14/
76  data fanbrs /1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1/
77 C
78 C
79 C file creation
80  call mfiope(fid,finame,med_acc_creat,cret)
81  if (cret .ne. 0 ) then
82  print *,'ERROR : file creation'
83  call efexit(-1)
84  endif
85 C
86 C
87 C write a comment in the file
88  call mficow(fid,cmt1,cret)
89  if (cret .ne. 0 ) then
90  print *,'ERROR : write file description'
91  call efexit(-1)
92  endif
93 C
94 C
95 C mesh creation : a 2D unstructured mesh
96  call mmhcre(fid, mname, sdim, mdim, mtype, mdesc, dtunit,
97  & stype, grtype, axname, unname, cret)
98  if (cret .ne. 0 ) then
99  print *,'ERROR : mesh creation'
100  call efexit(-1)
101  endif
102 C
103 C
104 C nodes coordinates in a cartesian axis in full interlace mode
105 C (X1,Y1, X2,Y2, X3,Y3, ...) with no iteration and computation step
106  call mmhcow(fid,mname,med_no_dt,med_no_it,dt,
107  & med_full_interlace,nnodes,coords,cret)
108  if (cret .ne. 0 ) then
109  print *,'ERROR : write nodes coordinates description'
110  call efexit(-1)
111  endif
112 C
113 C
114 C cells connectiviy is defined in nodal mode
115  call mmhcyw(fid,mname,med_no_dt,med_no_it,dt,med_cell,
116  & med_tria3,med_nodal,med_full_interlace,
117  & ntria3,tricon,cret)
118  if (cret .ne. 0 ) then
119  print *,'ERROR : triangular cells connectivity'
120  call efexit(-1)
121  endif
122  call mmhcyw(fid,mname,med_no_dt,med_no_it,dt,med_cell,
123  & med_quad4,med_nodal,med_full_interlace,
124  & nquad4,quacon,cret)
125  if (cret .ne. 0 ) then
126  print *,'ERROR : quadrangular cells connectivity'
127  call efexit(-1)
128  endif
129 C
130 C
131 C create family 0 : by default, all mesh entities family number is 0
132  call mfacre(fid,mname,med_no_name,0,0,med_no_group,cret)
133  if (cret .ne. 0 ) then
134  print *,'ERROR : create family 0'
135  call efexit(-1)
136  endif
137 C
138 C
139 C create a family for boundary vertices : by convention a nodes family number is > 0,
140 C and an element family number is < 0
141  fnum = 1
142  ngro = 1
143  call mfacre(fid, mname, fyname, fnum, ngro, gname, cret)
144  if (cret .ne. 0 ) then
145  print *,'ERROR : create family 0'
146  call efexit(-1)
147  endif
148 C
149 C
150 C write family number for nodes
151  call mmhfnw(fid, mname, med_no_dt, med_no_it, med_node, med_none,
152  & nnodes, fanbrs, cret)
153  if (cret .ne. 0 ) then
154  print *,'ERROR : nodes family numbers ...'
155  call efexit(-1)
156  endif
157 C
158 C
159 C close file
160  call mficlo(fid,cret)
161  if (cret .ne. 0 ) then
162  print *,'ERROR : close file'
163  call efexit(-1)
164  endif
165 C
166 C
167 C
168  end
169 C