136 lines
5.4 KiB
Python
Executable File
136 lines
5.4 KiB
Python
Executable File
#!/usr/bin/env python2.7
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# -*- coding: UTF-8 no BOM -*-
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import os,sys,math
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import numpy as np
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from optparse import OptionParser
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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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# --------------------------------------------------------------------
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# MAIN
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# --------------------------------------------------------------------
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minimal_surfaces = ['primitive','gyroid','diamond',]
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surface = {
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'primitive': lambda x,y,z: math.cos(x)+math.cos(y)+math.cos(z),
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'gyroid': lambda x,y,z: math.sin(x)*math.cos(y)+math.sin(y)*math.cos(z)+math.cos(x)*math.sin(z),
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'diamond': lambda x,y,z: math.cos(x-y)*math.cos(z)+math.sin(x+y)*math.sin(z),
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}
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parser = OptionParser(option_class=damask.extendableOption, usage='%prog [option(s)] [geomfile]', description = """
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Generate a geometry file of 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,filenames) = parser.parse_args()
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# --- loop over input files -------------------------------------------------------------------------
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if filenames == []: filenames = [None]
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for name in filenames:
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try:
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table = damask.ASCIItable(outname = name,
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buffered = False, labeled = False)
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except: continue
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damask.util.report(scriptName,name)
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# ------------------------------------------ make grid -------------------------------------
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info = {
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'grid': np.array(options.grid),
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'size': np.array(options.size),
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'origin': np.zeros(3,'d'),
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'microstructures': max(options.microstructure),
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'homogenization': options.homogenization
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}
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#--- report ---------------------------------------------------------------------------------------
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damask.util.croak(['grid a b c: %s'%(' x '.join(map(str,info['grid']))),
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'size x y z: %s'%(' x '.join(map(str,info['size']))),
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'origin x y z: %s'%(' : '.join(map(str,info['origin']))),
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'homogenization: %i'%info['homogenization'],
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'microstructures: %i'%info['microstructures'],
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])
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errors = []
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if np.any(info['grid'] < 1): errors.append('invalid grid a b c.')
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if np.any(info['size'] <= 0.0): errors.append('invalid size x y z.')
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if errors != []:
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damask.util.croak(errors)
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table.close(dismiss = True)
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continue
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#--- write header ---------------------------------------------------------------------------------
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table.labels_clear()
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table.info_clear()
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table.info_append([
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scriptID + ' ' + ' '.join(sys.argv[1:]),
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"grid\ta {grid[0]}\tb {grid[1]}\tc {grid[2]}".format(grid=info['grid']),
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"size\tx {size[0]}\ty {size[1]}\tz {size[2]}".format(size=info['size']),
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"origin\tx {origin[0]}\ty {origin[1]}\tz {origin[2]}".format(origin=info['origin']),
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"homogenization\t{homog}".format(homog=info['homogenization']),
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"microstructures\t{microstructures}".format(microstructures=info['microstructures']),
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])
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table.head_write()
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#--- write data -----------------------------------------------------------------------------------
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X = options.periods*2.0*math.pi*(np.arange(options.grid[0])+0.5)/options.grid[0]
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Y = options.periods*2.0*math.pi*(np.arange(options.grid[1])+0.5)/options.grid[1]
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Z = options.periods*2.0*math.pi*(np.arange(options.grid[2])+0.5)/options.grid[2]
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for z in range(options.grid[2]):
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for y in range(options.grid[1]):
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table.data_clear()
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for x in range(options.grid[0]):
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table.data_append(options.microstructure[options.threshold < surface[options.type](X[x],Y[y],Z[z])])
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table.data_write()
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table.close()
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