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##                                                         ##
## Copyright (c) 2007-2014 by The University of Queensland ##
## Centre for Geoscience Computing                         ##
## http://earth.uq.edu.au/centre-geoscience-computing      ##
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## Primary Business: Brisbane, Queensland, Australia       ##
## Licensed under the Open Software License version 3.0    ##
## http://www.opensource.org/licenses/osl-3.0.php          ##
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from gengeo import *

#An example python script to generate a cylinder of unbonded particles

# Define region extremities:
origin = Vector3(0.0,0.0,0.0)
axis = Vector3(0.0,1.0,0.0)
size = 5.0
minPoint = Vector3(-1.0*size,0.0,-1.0*size)
maxPoint = Vector3(size,3.0*size,size)

# Define the volume to be filled with spheres:
# 	(e.g. a cylinder)
cylinder = CylinderVol ( origin = origin, axis = axis, length = 3.0*size, radius = size)

# Create a multi-group neighbour table to contain the particles:
mntable = MNTable3D (
   minPoint = minPoint,
   maxPoint = maxPoint,
   gridSize = 2.2
)

# Fill the volume with particles:
packer = InsertGenerator3D (
   minRadius = 0.2,
   maxRadius = 1.0,
   insertFails = 1000,
   maxIterations = 1000,
   tolerance = 1.0e-6
)

# Generate the packing
packer.generatePacking(
   volume = cylinder, 
   ntable = mntable
)

# write a geometry file in VTK format
mntable.write(
   fileName = "temp/geo_example3.vtu",
   outputStyle = 2
)

# write a geometry file in ESyS-Particle geo format
mntable.write(
   fileName = "temp/geo_example3.geo",
   outputStyle = 1
)
