sm/smbinterp
1
0
Fork 0
Code Issues Pull Requests Activity

implementing a 2D mesh object for gmsh files

Browse Source
This commit is contained in:
Stephen McQuay 2010-10-06 12:15:09 -06:00
parent b3680848d5
commit e4988fd150
5 changed files with 507 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

122
bin/parse_gmsh.py Executable file
View File

@ -0,0 +1,122 @@
#!/usr/bin/env python
import sys
import pickle
from pudb import set_trace
from itertools import combinations
THREE_NODE_TRIANGLE = 2
class point(object):
def __init__(self, index, x, y, z):
self.index = index
self.x = x
self.y = y
self.z = z
self.points = []
self.faces = []
def __getitem__(self, i):
if isinstance(i, int):
if i == 0:
return self.x
elif i == 1:
return self.y
elif i == 2:
return self.z
else:
raise IndexError("there are only (x,y,z)")
elif isinstance(i, str):
if i == 'x':
return self.x
elif i == 'y':
return self.y
elif i == 'z':
return self.z
else:
raise IndexError
else:
raise TypeError("only p.x, p[0], and p['x'] access allowed")
def __str__(self):
return '(%f, %f, %f)' % (self.x, self.y, self.z)
__repr__ = __str__
class face(object):
def __init__(self, index):
self.index = index
self.neighbors = []
if __name__ == '__main__':
if len(sys.argv) != 2:
print >> sys.stderr, "usage: %s <gmsh file>" % sys.argv[0]
sys.exit(1)
gmsh_file = open(sys.argv[1], 'r')
gmsh_file.readline() # $MeshFormat
format = gmsh_file.readline()
gmsh_file.readline() # $EndMeshFormat
gmsh_file.readline() # $Nodes
node_count = int(gmsh_file.readline())
points = []
for i in xrange(node_count):
cur_line = gmsh_file.readline()
(index, x,y,z) = cur_line.split()
index = int(index) - 1
x = float(x)
y = float(y)
z = float(z)
points.append(point(index, x,y,z))
gmsh_file.readline() # $EndNodes
gmsh_file.readline() # $Elements
element_count = int(gmsh_file.readline())
faces = {}
faceobjs = {}
faces_for_point = {}
neighbors = {}
for i in xrange(element_count):
cur_line = gmsh_file.readline()
cur_line = cur_line.split()
cur_face_index, type, rest = (int(cur_line[0]),
int(cur_line[1]),
[int(j) for j in cur_line[2:]])
if(type == THREE_NODE_TRIANGLE):
points_for_cur_face = [i-1 for i in rest[rest[0]+1:]]
cur_face = face(cur_face_index)
for cur_point in points_for_cur_face:
points[cur_point].faces.append(cur_face_index)
faces[cur_face_index] = points_for_cur_face
cur_face.points = points_for_cur_face
faceobjs[cur_face_index] = cur_face
edges = [tuple(sorted(i)) for i in combinations(points_for_cur_face, 2)]
# edge is two points
for edge in edges:
if edge in neighbors:
neighbors[edge].append(cur_face_index)
else:
neighbors[edge] = [cur_face_index]
for k,v in neighbors.iteritems():
if len(v) > 1:
faceobjs[v[0]].neighbors.append(v[1])
faceobjs[v[1]].neighbors.append(v[0])
pickle.dump([(p[0], p[1], p[2]) for p in points], open('/tmp/points.p', 'w'))
pickle.dump(faces , open('/tmp/faces.p', 'w'))

12
bin/plot.py Normal file
View File

@ -0,0 +1,12 @@
from Blender import *
import bpy
import pickle
points = pickle.load(open('/tmp/points.p', 'r'))
faces = pickle.load(open('/tmp/faces.p', 'r'))
faces = [faces[i] for i in faces]
me = bpy.data.meshes.new('points')
me.verts.extend(points)
me.faces.extend(faces)
scn = bpy.data.scenes.active
ob = scn.objects.new(me, 'points_obj')

10
data/gmsh.geo Normal file
View File

@ -0,0 +1,10 @@
Point(0) = {0, 0, 0, 0.1};
Point(1) = {1, 0, 0, 0.1};
Point(2) = {1, 1, 0, 0.1};
Point(3) = {0, 1, 0, 0.1};
Line(1) = {0, 1};
Line(2) = {1, 2};
Line(3) = {2, 3};
Line(4) = {3, 0};
Line Loop(6) = {3, 4, 1, 2};
Plane Surface(6) = {6};

362
data/gmsh.msh Normal file
View File

@ -0,0 +1,362 @@
$MeshFormat
2.1 0 8
$EndMeshFormat
$Nodes
117
1 0 0 0
2 1 0 0
3 1 1 0
4 0 1 0
5 0.1111111111108444 0 0
6 0.2222222222216888 0 0
7 0.3333333333326072 0 0
8 0.4444444444435502 0 0
9 0.5555555555546474 0 0
10 0.6666666666658989 0 0
11 0.7777777777771888 0 0
12 0.8888888888885944 0 0
13 1 0.1111111111108444 0
14 1 0.2222222222216888 0
15 1 0.3333333333326072 0
16 1 0.4444444444435502 0
17 1 0.5555555555546474 0
18 1 0.6666666666658989 0
19 1 0.7777777777771888 0
20 1 0.8888888888885944 0
21 0.8888888888890432 1 0
22 0.7777777777780862 1 0
23 0.6666666666673606 1 0
24 0.5555555555567121 1 0
25 0.4444444444457551 1 0
26 0.3333333333344898 1 0
27 0.2222222222231475 1 0
28 0.1111111111115738 1 0
29 0 0.8888888888890432 0
30 0 0.7777777777780862 0
31 0 0.6666666666673606 0
32 0 0.5555555555567121 0
33 0 0.4444444444457551 0
34 0 0.3333333333344898 0
35 0 0.2222222222231475 0
36 0 0.1111111111115738 0
37 0.6019481680509189 0.4913575543465167 0
38 0.1704154153674942 0.6987672532229658 0
39 0.2320323718440504 0.2988129032487034 0
40 0.7203934687596977 0.8043583691231997 0
41 0.7461530186841386 0.1929549013576664 0
42 0.1592578463116252 0.08359262302228047 0
43 0.9046732056739187 0.8386130897669745 0
44 0.55391224379778 0.2396033220754424 0
45 0.5421680685928277 0.7779286720011396 0
46 0.8181774873951955 0.4749882420507863 0
47 0.2326926161233039 0.485616852426389 0
48 0.4134289336676409 0.3755948039322699 0
49 0.3955857714716899 0.155614678676658 0
50 0.3964523820262634 0.6106237011601788 0
51 0.3183008551948364 0.8282596138649532 0
52 0.747972626339022 0.3174544725147305 0
53 0.115111514964065 0.5094807917873129 0
54 0.08210779783140823 0.3953488242638357 0
55 0.2161063870833996 0.8420170010432833 0
56 0.2867674701932997 0.1004014894467341 0
57 0.1117691280776918 0.2867373625973466 0
58 0.7782802801475887 0.08764743691808025 0
59 0.1656501824337609 0.9139110243626632 0
60 0.09777744997828354 0.6250809283025385 0
61 0.08694268970211994 0.1534377186923689 0
62 0.8874248862012761 0.1766706245754574 0
63 0.8143386010060611 0.8947998106334527 0
64 0.9154635697338186 0.2965126361214718 0
65 0.2042201551313745 0.1825907197057003 0
66 0.1221557588570758 0.8160684445636995 0
67 0.5615878107409328 0.6625913585966549 0
68 0.5710015654393022 0.3513778243655594 0
69 0.5543394306777543 0.1388073259925792 0
70 0.4706111971459698 0.6893623434360537 0
71 0.7241227362625926 0.4969553545911873 0
72 0.4088030555370736 0.492829373616883 0
73 0.4125834576270711 0.2624197734146648 0
74 0.6735284038876777 0.3793797103525962 0
75 0.4951834151010877 0.4327963513029263 0
76 0.5017226402205569 0.5661622548734149 0
77 0.3625254214966867 0.7226669967770163 0
78 0.4924410166960045 0.8911616438491863 0
79 0.4904641794826192 0.3100224675679338 0
80 0.472506605803479 0.09184641247689862 0
81 0.2587129787828705 0.392780509541241 0
82 0.432030453434602 0.8049389726897674 0
83 0.4825516434052989 0.1972004487891118 0
84 0.6706338288381103 0.6104819591670753 0
85 0.3122957619843937 0.2173797050034385 0
86 0.3085810297272485 0.5445597672441419 0
87 0.3257130019894861 0.4334554227112007 0
88 0.8478065678339236 0.3756852149133095 0
89 0.9120115837707329 0.487462686094354 0
90 0.2744908164189229 0.6568143157400268 0
91 0.3260460219226232 0.3246015526067311 0
92 0.1999858480155758 0.5895516042137126 0
93 0.2445600632027671 0.7548465042825554 0
94 0.6212465789983248 0.8135684284801679 0
95 0.7623215643436823 0.408892598884522 0
96 0.935056344267695 0.3874876629810585 0
97 0.8876344750775997 0.6238650861420173 0
98 0.3865275250489252 0.06957251612005813 0
99 0.8276328903990903 0.2706905087430281 0
100 0.6562588147613345 0.1097474676684926 0
101 0.7918715835039105 0.5706548964236209 0
102 0.1720710679372316 0.3947962073108047 0
103 0.6433094433695727 0.2470464320467238 0
104 0.0714623294249179 0.06962829056524464 0
105 0.07936210124661788 0.9218754085638319 0
106 0.9335406355621672 0.9269560462763735 0
107 0.676544555905739 0.9090008435792557 0
108 0.3807337346163223 0.906063664281206 0
109 0.5775911551499217 0.87833191758195 0
110 0.6433967591677658 0.7346966171533521 0
111 0.584405534175352 0.5826054888330772 0
112 0.07806972484057069 0.7168722141069301 0
113 0.2727244524809927 0.9150418839253508 0
114 0.7695699867642202 0.697810806017272 0
115 0.8934048903315858 0.7315672920096196 0
116 0.8204760305070968 0.7934298735101037 0
117 0.8887286388357746 0.06257152876739701 0
$EndNodes
$Elements
236
1 15 3 0 0 0 1
2 15 3 0 1 0 2
3 15 3 0 2 0 3
4 15 3 0 3 0 4
5 1 3 0 1 0 1 5
6 1 3 0 1 0 5 6
7 1 3 0 1 0 6 7
8 1 3 0 1 0 7 8
9 1 3 0 1 0 8 9
10 1 3 0 1 0 9 10
11 1 3 0 1 0 10 11
12 1 3 0 1 0 11 12
13 1 3 0 1 0 12 2
14 1 3 0 2 0 2 13
15 1 3 0 2 0 13 14
16 1 3 0 2 0 14 15
17 1 3 0 2 0 15 16
18 1 3 0 2 0 16 17
19 1 3 0 2 0 17 18
20 1 3 0 2 0 18 19
21 1 3 0 2 0 19 20
22 1 3 0 2 0 20 3
23 1 3 0 3 0 3 21
24 1 3 0 3 0 21 22
25 1 3 0 3 0 22 23
26 1 3 0 3 0 23 24
27 1 3 0 3 0 24 25
28 1 3 0 3 0 25 26
29 1 3 0 3 0 26 27
30 1 3 0 3 0 27 28
31 1 3 0 3 0 28 4
32 1 3 0 4 0 4 29
33 1 3 0 4 0 29 30
34 1 3 0 4 0 30 31
35 1 3 0 4 0 31 32
36 1 3 0 4 0 32 33
37 1 3 0 4 0 33 34
38 1 3 0 4 0 34 35
39 1 3 0 4 0 35 36
40 1 3 0 4 0 36 1
41 2 3 0 6 0 19 20 43
42 2 3 0 6 0 5 6 42
43 2 3 0 6 0 53 32 33
44 2 3 0 6 0 33 34 54
45 2 3 0 6 0 61 57 35
46 2 3 0 6 0 41 58 62
47 2 3 0 6 0 64 14 15
48 2 3 0 6 0 42 56 65
49 2 3 0 6 0 39 57 65
50 2 3 0 6 0 59 27 28
51 2 3 0 6 0 61 35 36
52 2 3 0 6 0 53 33 54
53 2 3 0 6 0 61 42 65
54 2 3 0 6 0 61 65 57
55 2 3 0 6 0 13 14 62
56 2 3 0 6 0 62 14 64
57 2 3 0 6 0 21 22 63
58 2 3 0 6 0 60 31 32
59 2 3 0 6 0 32 53 60
60 2 3 0 6 0 34 35 57
61 2 3 0 6 0 57 54 34
62 2 3 0 6 0 10 11 58
63 2 3 0 6 0 6 7 56
64 2 3 0 6 0 6 56 42
65 2 3 0 6 0 70 67 45
66 2 3 0 6 0 37 68 74
67 2 3 0 6 0 74 71 37
68 2 3 0 6 0 75 68 37
69 2 3 0 6 0 75 72 48
70 2 3 0 6 0 50 72 76
71 2 3 0 6 0 50 70 77
72 2 3 0 6 0 44 68 79
73 2 3 0 6 0 48 73 79
74 2 3 0 6 0 80 8 9
75 2 3 0 6 0 9 69 80
76 2 3 0 6 0 82 70 45
77 2 3 0 6 0 83 69 44
78 2 3 0 6 0 83 73 49
79 2 3 0 6 0 37 71 84
80 2 3 0 6 0 49 73 85
81 2 3 0 6 0 85 56 49
82 2 3 0 6 0 86 72 50
83 2 3 0 6 0 48 72 87
84 2 3 0 6 0 47 81 87
85 2 3 0 6 0 46 88 89
86 2 3 0 6 0 50 77 90
87 2 3 0 6 0 91 73 48
88 2 3 0 6 0 91 81 39
89 2 3 0 6 0 38 60 92
90 2 3 0 6 0 92 60 53
91 2 3 0 6 0 93 66 38
92 2 3 0 6 0 46 71 95
93 2 3 0 6 0 52 88 95
94 2 3 0 6 0 95 88 46
95 2 3 0 6 0 96 15 16
96 2 3 0 6 0 96 88 64
97 2 3 0 6 0 64 15 96
98 2 3 0 6 0 17 18 97
99 2 3 0 6 0 7 8 98
100 2 3 0 6 0 49 56 98
101 2 3 0 6 0 98 56 7
102 2 3 0 6 0 41 62 99
103 2 3 0 6 0 99 62 64
104 2 3 0 6 0 99 52 41
105 2 3 0 6 0 9 10 100
106 2 3 0 6 0 100 69 9
107 2 3 0 6 0 47 53 102
108 2 3 0 6 0 102 53 54
109 2 3 0 6 0 102 81 47
110 2 3 0 6 0 44 69 103
111 2 3 0 6 0 104 1 5
112 2 3 0 6 0 104 61 36
113 2 3 0 6 0 36 1 104
114 2 3 0 6 0 105 4 29
115 2 3 0 6 0 105 59 28
116 2 3 0 6 0 28 4 105
117 2 3 0 6 0 106 3 21
118 2 3 0 6 0 106 43 20
119 2 3 0 6 0 20 3 106
120 2 3 0 6 0 98 8 80
121 2 3 0 6 0 49 98 80
122 2 3 0 6 0 85 39 65
123 2 3 0 6 0 56 85 65
124 2 3 0 6 0 106 21 63
125 2 3 0 6 0 43 106 63
126 2 3 0 6 0 88 52 99
127 2 3 0 6 0 88 99 64
128 2 3 0 6 0 104 5 42
129 2 3 0 6 0 61 104 42
130 2 3 0 6 0 70 50 76
131 2 3 0 6 0 70 76 67
132 2 3 0 6 0 75 48 79
133 2 3 0 6 0 75 79 68
134 2 3 0 6 0 83 49 80
135 2 3 0 6 0 69 83 80
136 2 3 0 6 0 82 51 77
137 2 3 0 6 0 70 82 77
138 2 3 0 6 0 74 52 95
139 2 3 0 6 0 74 95 71
140 2 3 0 6 0 75 37 76
141 2 3 0 6 0 75 76 72
142 2 3 0 6 0 86 47 87
143 2 3 0 6 0 86 87 72
144 2 3 0 6 0 91 39 85
145 2 3 0 6 0 73 91 85
146 2 3 0 6 0 83 44 79
147 2 3 0 6 0 73 83 79
148 2 3 0 6 0 86 50 90
149 2 3 0 6 0 91 48 87
150 2 3 0 6 0 81 91 87
151 2 3 0 6 0 96 16 89
152 2 3 0 6 0 88 96 89
153 2 3 0 6 0 78 24 25
154 2 3 0 6 0 45 78 82
155 2 3 0 6 0 89 16 17
156 2 3 0 6 0 97 89 17
157 2 3 0 6 0 46 89 101
158 2 3 0 6 0 97 101 89
159 2 3 0 6 0 103 41 52
160 2 3 0 6 0 103 68 44
161 2 3 0 6 0 68 103 74
162 2 3 0 6 0 103 52 74
163 2 3 0 6 0 93 38 90
164 2 3 0 6 0 93 77 51
165 2 3 0 6 0 51 55 93
166 2 3 0 6 0 93 90 77
167 2 3 0 6 0 101 71 46
168 2 3 0 6 0 71 101 84
169 2 3 0 6 0 38 92 90
170 2 3 0 6 0 92 53 47
171 2 3 0 6 0 86 92 47
172 2 3 0 6 0 86 90 92
173 2 3 0 6 0 29 30 66
174 2 3 0 6 0 105 29 66
175 2 3 0 6 0 66 55 59
176 2 3 0 6 0 93 55 66
177 2 3 0 6 0 59 105 66
178 2 3 0 6 0 78 25 108
179 2 3 0 6 0 108 82 78
180 2 3 0 6 0 78 45 109
181 2 3 0 6 0 94 107 109
182 2 3 0 6 0 109 45 94
183 2 3 0 6 0 110 45 67
184 2 3 0 6 0 94 45 110
185 2 3 0 6 0 111 76 37
186 2 3 0 6 0 111 84 67
187 2 3 0 6 0 67 76 111
188 2 3 0 6 0 37 84 111
189 2 3 0 6 0 60 38 112
190 2 3 0 6 0 66 30 112
191 2 3 0 6 0 112 38 66
192 2 3 0 6 0 113 27 59
193 2 3 0 6 0 59 55 113
194 2 3 0 6 0 112 30 31
195 2 3 0 6 0 60 112 31
196 2 3 0 6 0 113 55 51
197 2 3 0 6 0 26 27 113
198 2 3 0 6 0 108 25 26
199 2 3 0 6 0 24 107 23
200 2 3 0 6 0 24 78 109
201 2 3 0 6 0 24 109 107
202 2 3 0 6 0 110 67 84
203 2 3 0 6 0 94 110 40
204 2 3 0 6 0 107 22 23
205 2 3 0 6 0 63 22 107
206 2 3 0 6 0 40 63 107
207 2 3 0 6 0 40 107 94
208 2 3 0 6 0 41 100 58
209 2 3 0 6 0 103 100 41
210 2 3 0 6 0 58 100 10
211 2 3 0 6 0 103 69 100
212 2 3 0 6 0 102 57 39
213 2 3 0 6 0 39 81 102
214 2 3 0 6 0 54 57 102
215 2 3 0 6 0 114 40 110
216 2 3 0 6 0 84 101 114
217 2 3 0 6 0 114 110 84
218 2 3 0 6 0 114 101 97
219 2 3 0 6 0 26 113 108
220 2 3 0 6 0 108 51 82
221 2 3 0 6 0 108 113 51
222 2 3 0 6 0 43 115 19
223 2 3 0 6 0 115 114 97
224 2 3 0 6 0 115 97 18
225 2 3 0 6 0 115 18 19
226 2 3 0 6 0 116 63 40
227 2 3 0 6 0 116 114 115
228 2 3 0 6 0 40 114 116
229 2 3 0 6 0 43 63 116
230 2 3 0 6 0 43 116 115
231 2 3 0 6 0 117 2 13
232 2 3 0 6 0 12 2 117
233 2 3 0 6 0 11 12 117
234 2 3 0 6 0 62 58 117
235 2 3 0 6 0 117 13 62
236 2 3 0 6 0 11 117 58
$EndElements