98 lines
3.5 KiB
Python
Executable File
98 lines
3.5 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
|
|
import os
|
|
import sys
|
|
from optparse import OptionParser
|
|
|
|
import numpy as np
|
|
|
|
import damask
|
|
|
|
|
|
scriptName = os.path.splitext(os.path.basename(__file__))[0]
|
|
scriptID = ' '.join([scriptName,damask.version])
|
|
|
|
|
|
minimal_surfaces = ['primitive','gyroid','diamond']
|
|
|
|
surface = {
|
|
'primitive': lambda x,y,z: np.cos(x)+np.cos(y)+np.cos(z),
|
|
'gyroid': lambda x,y,z: np.sin(x)*np.cos(y)+np.sin(y)*np.cos(z)+np.cos(x)*np.sin(z),
|
|
'diamond': lambda x,y,z: np.cos(x-y)*np.cos(z)+np.sin(x+y)*np.sin(z),
|
|
}
|
|
|
|
|
|
# --------------------------------------------------------------------
|
|
# MAIN
|
|
# --------------------------------------------------------------------
|
|
|
|
parser = OptionParser(option_class=damask.extendableOption, usage='%prog options [geomfile]', description = """
|
|
Generate a bicontinuous structure of given type.
|
|
|
|
""", version = scriptID)
|
|
|
|
|
|
parser.add_option('-t','--type',
|
|
dest = 'type',
|
|
choices = minimal_surfaces, metavar = 'string',
|
|
help = 'type of minimal surface [primitive] {%s}' %(','.join(minimal_surfaces)))
|
|
parser.add_option('-f','--threshold',
|
|
dest = 'threshold',
|
|
type = 'float', metavar = 'float',
|
|
help = 'threshold value defining minimal surface [%default]')
|
|
parser.add_option('-g', '--grid',
|
|
dest = 'grid',
|
|
type = 'int', nargs = 3, metavar = 'int int int',
|
|
help = 'a,b,c grid of hexahedral box [%default]')
|
|
parser.add_option('-s', '--size',
|
|
dest = 'size',
|
|
type = 'float', nargs = 3, metavar = 'float float float',
|
|
help = 'x,y,z size of hexahedral box [%default]')
|
|
parser.add_option('-p', '--periods',
|
|
dest = 'periods',
|
|
type = 'int', metavar = 'int',
|
|
help = 'number of repetitions of unit cell [%default]')
|
|
parser.add_option('--homogenization',
|
|
dest = 'homogenization',
|
|
type = 'int', metavar = 'int',
|
|
help = 'homogenization index to be used [%default]')
|
|
parser.add_option('--m',
|
|
dest = 'microstructure',
|
|
type = 'int', nargs = 2, metavar = 'int int',
|
|
help = 'two microstructure indices to be used [%default]')
|
|
|
|
parser.set_defaults(type = minimal_surfaces[0],
|
|
threshold = 0.0,
|
|
periods = 1,
|
|
grid = (16,16,16),
|
|
size = (1.0,1.0,1.0),
|
|
homogenization = 1,
|
|
microstructure = (1,2),
|
|
)
|
|
|
|
(options,filename) = parser.parse_args()
|
|
|
|
|
|
name = None if filename == [] else filename[0]
|
|
damask.util.report(scriptName,name)
|
|
|
|
X = options.periods*2.0*np.pi*(np.arange(options.grid[0])+0.5)/options.grid[0]
|
|
Y = options.periods*2.0*np.pi*(np.arange(options.grid[1])+0.5)/options.grid[1]
|
|
Z = options.periods*2.0*np.pi*(np.arange(options.grid[2])+0.5)/options.grid[2]
|
|
|
|
microstructure = np.empty(options.grid,dtype=int)
|
|
for x in range(options.grid[0]):
|
|
for y in range(options.grid[1]):
|
|
for z in range(options.grid[2]):
|
|
microstructure[x,y,z]=options.microstructure[int(options.threshold < surface[options.type](X[x],Y[y],Z[z]))]
|
|
|
|
geom=damask.Geom(microstructure,options.size,
|
|
homogenization=options.homogenization,
|
|
comments=[scriptID + ' ' + ' '.join(sys.argv[1:])])
|
|
damask.util.croak(geom)
|
|
|
|
if name is None:
|
|
sys.stdout.write(str(geom.show()))
|
|
else:
|
|
geom.to_file(name)
|