90 lines
3.7 KiB
Python
Executable File
90 lines
3.7 KiB
Python
Executable File
#!/usr/bin/env python
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# -*- coding: UTF-8 no BOM -*-
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import os,sys,string,re,math,numpy,random
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from optparse import OptionParser, OptionGroup, Option, SUPPRESS_HELP
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# -----------------------------
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class extendedOption(Option):
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# -----------------------------
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# used for definition of new option parser action 'extend', which enables to take multiple option arguments
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# taken from online tutorial http://docs.python.org/library/optparse.html
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ACTIONS = Option.ACTIONS + ("extend",)
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STORE_ACTIONS = Option.STORE_ACTIONS + ("extend",)
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TYPED_ACTIONS = Option.TYPED_ACTIONS + ("extend",)
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ALWAYS_TYPED_ACTIONS = Option.ALWAYS_TYPED_ACTIONS + ("extend",)
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def take_action(self, action, dest, opt, value, values, parser):
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if action == "extend":
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lvalue = value.split(",")
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values.ensure_value(dest, []).extend(lvalue)
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else:
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Option.take_action(self, action, dest, opt, value, values, parser)
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# ----------------------- MAIN -------------------------------
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identifiers = {
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'resolution': ['a','b','c'],
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'dimension': ['x','y','z'],
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}
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mappings = {
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'resolution': lambda x: int(x),
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'dimension': lambda x: float(x),
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}
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parser = OptionParser(option_class=extendedOption, usage='%prog options [file[s]]', description = """
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Offset microstructure index for points which see a microstructure different from themselves within a given (cubic) vicinity,
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i.e. within the region close to a grain/phase boundary.
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""" + string.replace('$Id$','\n','\\n')
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)
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parser.add_option('-f', '--file', dest='filename', type="string", \
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help='output seed file name')
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parser.add_option('-s', '--seed', dest='randomSeed', type='int', \
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help='seed of random number generator')
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parser.add_option('-n', '--ngrains', dest='N_Seeds', type='int', \
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help='seed of random number generator')
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parser.add_option('-r','--res', dest='res', type='int', nargs=3, \
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help='Min Fourier points in x, y, z')
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parser.set_defaults(filename = 'seeds')
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parser.set_defaults(randomSeed = 0)
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(options, filenames) = parser.parse_args()
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if options.N_Seeds > options.res[0]*options.res[1]*options.res[2]:
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print 'Warning: Number of grains exceeds min resolution'
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options.N_Seeds = options.res[0]*options.res[1]*options.res[2]
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seeds = numpy.zeros((3,options.N_Seeds),float)
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numpy.random.seed(options.randomSeed)
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grainEuler=numpy.random.rand(3,options.N_Seeds)
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grainEuler[0,:] = 360*grainEuler[0,:]
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grainEuler[1,:] = numpy.arccos(2*grainEuler[1,:]-1)*180/math.pi
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grainEuler[2,:] = 360*grainEuler[2,:]
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seedpoint = numpy.random.permutation(options.res[0]*options.res[1]*options.res[2])[:options.N_Seeds]
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seeds[0,:]=numpy.mod(seedpoint,options.res[0])/options.res[0]+1
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seeds[1,:]=numpy.mod((seedpoint-seeds[0,:])/options.res[0],options.res[1])+1
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seeds[2,:]=(seedpoint-seeds[0,:]-options.res[1]*seeds[1,:])/(options.res[0]*options.res[1])+1
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seeds[0,:]=(seeds[0,:]+numpy.random.rand(1,options.N_Seeds)-0.5)/options.res[0]
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seeds[1,:]=(seeds[1,:]+numpy.random.rand(1,options.N_Seeds)-0.5)/options.res[1]
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seeds[2,:]=(seeds[2,:]+numpy.random.rand(1,options.N_Seeds)-0.5)/options.res[2]
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f = open(options.filename+'.seeds', 'w')
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f.write("{0:1d} {1:6s}\n".format(4,'header'))
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f.write("{0:s} {1:8d} {2:s} {3:8d} {4:s} {5:8d}\n".format('resolution a',options.res[0],'b',options.res[1],'c',options.res[2]))
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f.write("{0:s} {1:8d}\n".format('grains',options.N_Seeds))
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f.write("{0:s} {1:8d}\n".format('random seed',options.randomSeed))
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f.write("x y z phi1 Phi phi2\n")
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f.close()
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f=file(options.filename+'.seeds','a')
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numpy.savetxt(f,numpy.transpose(numpy.concatenate((seeds,grainEuler),axis=0)),fmt='%10.6f',delimiter=' ')
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f.close()
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