DAMASK_EICMD/processing/pre/geom_rescale.py

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#!/usr/bin/env python3
# -*- coding: UTF-8 no BOM -*-
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import os
import sys
from io import StringIO
from optparse import OptionParser
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from scipy import ndimage
import damask
scriptName = os.path.splitext(os.path.basename(__file__))[0]
scriptID = ' '.join([scriptName,damask.version])
#--------------------------------------------------------------------------------------------------
# MAIN
#--------------------------------------------------------------------------------------------------
parser = OptionParser(option_class=damask.extendableOption, usage='%prog options [geomfile(s)]', description = """
Scales a geometry description independently in x, y, and z direction in terms of grid and/or size.
Either absolute values or relative factors (like "0.25x") can be used.
""", version = scriptID)
parser.add_option('-g', '--grid',
dest = 'grid',
type = 'string', nargs = 3, metavar = 'string string string',
help = 'a,b,c grid of hexahedral box [unchanged]')
parser.add_option('-s', '--size',
dest = 'size',
type = 'string', nargs = 3, metavar = 'string string string',
help = 'x,y,z size of hexahedral box [unchanged]')
(options, filenames) = parser.parse_args()
# --- loop over input files -------------------------------------------------------------------------
if filenames == []: filenames = [None]
for name in filenames:
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damask.util.report(scriptName,name)
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if name is None:
virt_file = StringIO(''.join(sys.stdin.read()))
geom = damask.Geom.from_file(virt_file)
else:
geom = damask.Geom.from_file(name)
microstructure = geom.microstructure
scale = geom.get_grid().astype('float')
if options.grid is not None:
for i,g in enumerate(options.grid):
scale[i] = scale[i]*float(g.lower().replace('x','')) if g.lower().startswith('x') \
else float(options.grid[i])/scale[i]
size = geom.get_size()
if options.size is not None:
for i,s in enumerate(options.size):
size[i] = size[i]*float(s.lower().replace('x','')) if s.lower().startswith('x') \
else options.size[i]
microstructure = ndimage.interpolation.zoom(microstructure, scale, output=microstructure.dtype,
order=0, mode='nearest', prefilter=False)
geom.microstructure = microstructure
geom.set_size(size)
geom.add_comment(scriptID + ' ' + ' '.join(sys.argv[1:]))
damask.util.croak(geom)
if name is None:
sys.stdout.write(str(geom.show()))
else:
geom.to_file(name)