1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
#############################################################
## ##
## Copyright (c) 2007-2014 by The University of Queensland ##
## Centre for Geoscience Computing ##
## http://earth.uq.edu.au/centre-geoscience-computing ##
## ##
## Primary Business: Brisbane, Queensland, Australia ##
## Licensed under the Open Software License version 3.0 ##
## http://www.opensource.org/licenses/osl-3.0.php ##
## ##
#############################################################
from gengeo import *
#An example python script to generate a union/intersection of two volumes
# Define region extremities:
maxRadius = 1.0
size = 20.0
minPoint = Vector3(0.0,0.0,0.0)
maxPoint = Vector3(size,size,size)
minPt = Vector3(0,0,0)
maxPt = Vector3(size,0.5*size,size)
# Define the first volume to be filled with spheres:
box = BoxWithPlanes3D (
minPoint = minPt,
maxPoint = maxPt
)
box.addPlane(
Plane(
origin = minPt,
normal = Vector3(1.0,0.0,0.0)
)
)
#or the compact form:
box.addPlane(Plane(minPt, Vector3(0.0,1.0,0.0)))
box.addPlane(Plane(minPt, Vector3(0.0,0.0,1.0)))
box.addPlane(Plane(maxPt, Vector3(-1.0,0.0,0.0)))
box.addPlane(Plane(maxPt, Vector3(0.0,-1.0,0.0)))
box.addPlane(Plane(maxPt, Vector3(0.0,0.0,-1.0)))
sphere = SphereVol (
centre = Vector3(0.5*size,0.5*size,0.5*size),
radius = 0.5*size
)
sphere1 = SphereVol (
centre = Vector3(0.5*size,0.75*size,0.5*size),
radius = 0.5*size
)
sphere2 = SphereVol (
centre = Vector3(0.5*size,0.25*size,0.5*size),
radius = 0.5*size
)
cylinder = CylinderVol (
origin = Vector3 (0.5*size,0,0.5*size),
axis = Vector3 (0,1,0),
length = 0.5*size,
radius = 0.5*size
)
cylinder2 = CylinderVol (
origin = Vector3 (0.5*size,0,0.5*size),
axis = Vector3 (0,1,0),
length = 0.5*size,
radius = 0.4*size
)
cylinder3 = CylinderVol (
origin = Vector3 (0.5*size,0.25*size,0.5*size),
axis = Vector3 (0,1,0),
length = 0.5*size,
radius = 0.3*size
)
unionVol = UnionVol (
volume1 = sphere,
volume2 = cylinder
)
intersectionVol = IntersectionVol (
volume1 = sphere1,
volume2 = sphere2
)
differenceVol = DifferenceVol (
volume1 = cylinder,
volume2 = cylinder2
)
differenceVol2 = DifferenceVol (
volume1 = cylinder,
volume2 = sphere1
)
differenceVol3 = DifferenceVol (
volume1 = cylinder,
volume2 = cylinder3
)
# Create a multi-group neighbour table to contain the particles:
mntable = MNTable3D (
minPoint = minPoint,
maxPoint = maxPoint,
gridSize = 2.5*maxRadius
)
# Fill the volume with particles:
packer = InsertGenerator3D (
minRadius = 0.2,
maxRadius = maxRadius,
insertFails = 1000,
maxIterations = 1000,
tolerance = 1.0e-6
)
packer.generatePacking(
# volume = unionVol,
# volume = intersectionVol,
# volume = differenceVol,
volume = differenceVol2,
# volume = differenceVol3,
# volume = cylinder,
ntable = mntable
)
# create bonds between neighbouring particles:
mntable.generateBonds(
tolerance = 1.0e-5,
bondID = 0
)
mntable.tagParticlesInVolume (
volume = differenceVol,
tag = 12345
)
# write a geometry file
mntable.write(
fileName = "temp/geo_example10.vtu",
outputStyle = 2
)
mntable.write(
fileName = "temp/geo_example10.raw",
outputStyle = 0
)
mntable.write(
fileName = "temp/geo_example10.geo",
outputStyle = 1
)
|