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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 __future__ import division, print_function
from gengeo import *
#An example python script to generate a bonded rectangular prism
# Define region extremities:
maxRadius = 1.0
size = 4.0
minPoint = Vector3(0.0,0.0,0.0)
maxPoint = Vector3(size,2.0*size,size)
# Define the volume to be filled with spheres:
# (e.g. a box bounded by planes)
# QUESTION: Are there constraints on normals e.g. inward facing?
box = BoxWithPlanes3D (
minPoint = minPoint,
maxPoint = maxPoint
)
box.addPlane(
Plane(
origin = minPoint,
normal = Vector3(1.0,0.0,0.0)
)
)
#or the compact form:
box.addPlane(Plane(minPoint, Vector3(0.0,1.0,0.0)))
box.addPlane(Plane(minPoint, Vector3(0.0,0.0,1.0)))
box.addPlane(Plane(maxPoint, Vector3(-1.0,0.0,0.0)))
box.addPlane(Plane(maxPoint, Vector3(0.0,-1.0,0.0)))
box.addPlane(Plane(maxPoint, Vector3(0.0,0.0,-1.0)))
# Create a multi-group neighbour table to contain the particles:
mntable = MNTable3D (
minPoint = minPoint,
maxPoint = maxPoint,
gridSize = 2.5*maxRadius
)
sList = ShapeList()
sList.addGenericShape(
db = "shapeDatabase.db",
name = "sphere",
bias = 1,
random = 1,
particleTag = 1,
bondTag = 1
)
sList.addGenericShape(
db = "shapeDatabase.db",
name = "test",
bias = 5,
random = 1,
particleTag = 2,
bondTag = 2
)
# Fill the volume with particles:
packer = InsertGenerator3D (
minRadius = 0.2,
maxRadius = maxRadius,
insertFails = 1000,
maxIterations = 1000,
tolerance = 1.0e-6
)
packer.generatePacking(
volume = box,
ntable = mntable,
tag = 0,
shapeList = sList
)
# print the porosity:
volume = 2.0*size*size*size
porosity = (volume - mntable.getSumVolume())/volume
print("Porosity: ", porosity)
# write a geometry file in VTK format
mntable.write(
fileName = "temp/geo_exampleShapeList.vtu",
outputStyle = 2
)
# write a geometry file in raw (debug) format
mntable.write(
fileName = "temp/geo_exampleShapeList.raw",
outputStyle = 0
)
# write a geometry file in gengeo file format
mntable.write(
fileName = "temp/geo_exampleShapeList.geo",
outputStyle = 1
)
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