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#############################################################
## ##
## Copyright (c) 2007-2017 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.apache.org/licenses/LICENSE-2.0 ##
## ##
#############################################################
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
)
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