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