DAMASK_EICMD/processing/pre/geom_fromAng.py

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#!/usr/bin/env python
import os,sys,math,string,numpy
from optparse import OptionParser, Option
# -----------------------------
class extendableOption(Option):
# -----------------------------
# used for definition of new option parser action 'extend', which enables to take multiple option arguments
# taken from online tutorial http://docs.python.org/library/optparse.html
ACTIONS = Option.ACTIONS + ("extend",)
STORE_ACTIONS = Option.STORE_ACTIONS + ("extend",)
TYPED_ACTIONS = Option.TYPED_ACTIONS + ("extend",)
ALWAYS_TYPED_ACTIONS = Option.ALWAYS_TYPED_ACTIONS + ("extend",)
def take_action(self, action, dest, opt, value, values, parser):
if action == "extend":
lvalue = value.split(",")
values.ensure_value(dest, []).extend(lvalue)
else:
Option.take_action(self, action, dest, opt, value, values, parser)
# --------------------------------------------------------------------
# MAIN
# --------------------------------------------------------------------
parser = OptionParser(option_class=extendableOption, usage='%prog options [file[s]]', description = """
Generate geometry description and material configuration from EBSD data in given square-gridded 'ang' file.
Two phases can be discriminated based on threshold value in a given data column.
""" + string.replace('$Id$','\n','\\n')
)
parser.add_option('--column', dest='column', type='int', \
help='data column to discriminate phase 1 from 2 [%default]')
parser.add_option('-t','--threshold', dest='threshold', type='float', \
help='threshold value to discriminate phase 1 from 2 [%default]')
parser.add_option('--homogenization', dest='homogenization', type='int', \
help='homogenization index to be used [%default]')
parser.add_option('--phase', dest='phase', type='int', nargs = 2, \
help='phase indices to be used %default')
parser.add_option('--crystallite', dest='crystallite', type='int', \
help='crystallite index to be used [%default]')
parser.add_option('-c', '--configuration', dest='config', action='store_true', \
help='output material configuration [%default]')
parser.set_defaults(column = 11)
parser.set_defaults(threshold = 0.5)
parser.set_defaults(homogenization = 1)
parser.set_defaults(phase = [1,2])
parser.set_defaults(crystallite = 1)
parser.set_defaults(config = False)
(options,filenames) = parser.parse_args()
# ------------------------------------------ setup file handles ---------------------------------------
files = []
if filenames == []:
files.append({'name':'STDIN',
'input':sys.stdin,
'output':sys.stdout,
'croak':sys.stderr,
})
else:
for name in filenames:
if os.path.exists(name):
files.append({'name':name,
'input':open(name),
'output':open(name+'_tmp','w'),
'croak':sys.stdout,
})
# ------------------------------------------ loop over input files ---------------------------------------
for file in files:
if file['name'] != 'STDIN': file['croak'].write(file['name']+'\n')
point = 0
step = [0,0]
grid = [1,1]
microstructure = ['<microstructure>']
texture = ['<texture>']
for line in file['input']:
words = line.split()
if words[0] == '#': # process initial comments block
if len(words) > 2:
if words[1] == 'HexGrid':
file['croak'].write('The file has HexGrid format. Please first convert to SquareGrid...\n'); break
if words[1] == 'XSTEP:': step[0] = float(words[2])
if words[1] == 'YSTEP:': step[1] = float(words[2])
if words[1] == 'NCOLS_ODD:':
grid[0] = int(words[2]); formatwidth = 1+int(math.log10(grid[0]*grid[1]))
if words[1] == 'NROWS:':
grid[1] = int(words[2]); formatwidth = 1+int(math.log10(grid[0]*grid[1]))
else: # finished with comments block
if options.config: # write configuration (line by line)
point += 1
me = str(point).zfill(formatwidth)
microstructure += ['[Grain%s]\n'%me + \
'crystallite\t%i\n'%options.crystallite + \
'(constituent)\tphase %i\ttexture %s\tfraction 1.0\n'%(options.phase[{True:0,False:1}[float(words[options.column-1])<options.threshold]],me)
]
texture += ['[Grain%s]\n'%me + \
'(gauss)\tphi1 %4.2f\tPhi %4.2f\tphi2 %4.2f\tscatter 0.0\tfraction 1.0\n'%tuple(map(lambda x: float(x)*180.0/math.pi, words[:3]))
]
else:
grid.append(1)
file['output'].write("6 header\n" + \
"$Id$ \n"
"grid\ta %i\tb %i\tc 1\n"%(grid[0],grid[1]) + \
"size\tx %g\ty %g\tz %g\n"%(step[0]*grid[0],step[1]*grid[1],min(step)) + \
"origin\tx 0\ty 0\tz 0\n" + \
"microstructures\t%i\n"%(grid[0]*grid[1]) + \
"homogenization %i\n"%options.homogenization + \
"1 to %i\n"%(grid[0]*grid[1]))
break
file['croak'].write('grid a b c: %s\n'%(' x '.join(map(str,grid))) + \
'size x y z: %s\n'%(' x '.join(map(str,[step[0]*grid[0],step[1]*grid[1],min(step)]))) + \
'origin x y z: %s\n'%(' : '.join(map(str,[0.0,0.0,0.0]))) + \
'microstructures: %i\n'%(grid[0]*grid[1]) + \
'homogenization: %i\n'%options.homogenization)
if options.config:
file['output'].write('\n'.join(microstructure) + \
'\n'.join(texture))
# ------------------------------------------ output finalization ---------------------------------------
if file['name'] != 'STDIN':
file['output'].close()
os.rename(file['name']+'_tmp',os.path.splitext(file['name'])[0] + \
{True: '_material.config',
False:'.geom'}[options.config])