DAMASK_EICMD/processing/pre/geom_check.py

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#!/usr/bin/env python
# -*- coding: UTF-8 no BOM -*-
import os,sys,string,re,numpy,vtk
from optparse import OptionParser, OptionGroup, Option, SUPPRESS_HELP
#--------------------------------------------------------------------------------------------------
class extendedOption(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
#--------------------------------------------------------------------------------------------------
identifiers = {
'grid': ['a','b','c'],
'size': ['x','y','z'],
'origin': ['x','y','z'],
}
mappings = {
'grid': lambda x: int(x),
'size': lambda x: float(x),
'origin': lambda x: float(x),
'homogenization': lambda x: int(x),
'microstructures': lambda x: int(x),
}
parser = OptionParser(option_class=extendedOption, usage='%prog [geomfile[s]]', description = """
Produce VTK rectilinear mesh of structure data from geom description
2011-08-18 13:23:07 +05:30
""" + string.replace('$Id$','\n','\\n')
)
(options, filenames) = parser.parse_args()
#--- setup file handles --------------------------------------------------------------------------
files = []
if filenames == []:
files.append({'name':'STDIN',
'input':sys.stdin,
'croak':sys.stderr,
})
else:
for name in filenames:
if os.path.exists(name):
files.append({'name':name,
'input':open(name),
'croak':sys.stdout,
})
#--- loop over input files ------------------------------------------------------------------------
for file in files:
if file['name'] != 'STDIN': file['croak'].write(file['name']+'\n')
firstline = file['input'].readline()
m = re.search('(\d+)\s*head', firstline.lower())
if m:
headerlines = int(m.group(1))
headers = [file['input'].readline() for i in range(headerlines)]
else:
headerlines = 1
headers = firstline
content = file['input'].readlines()
file['input'].close()
#--- interprete header ----------------------------------------------------------------------------
info = {
'grid': numpy.zeros(3,'i'),
'size': numpy.zeros(3,'d'),
'origin': numpy.zeros(3,'d'),
'microstructures': 0,
'homogenization': 0
}
for header in headers:
headitems = map(str.lower,header.split())
if headitems[0] == 'resolution': headitems[0] = 'grid'
if headitems[0] == 'dimension': headitems[0] = 'size'
if headitems[0] in mappings.keys():
if headitems[0] in identifiers.keys():
for i in xrange(len(identifiers[headitems[0]])):
info[headitems[0]][i] = \
mappings[headitems[0]](headitems[headitems.index(identifiers[headitems[0]][i])+1])
else:
info[headitems[0]] = mappings[headitems[0]](headitems[1])
file['croak'].write('grid a b c: %s\n'%(' x '.join(map(str,info['grid']))) + \
'size x y z: %s\n'%(' x '.join(map(str,info['size']))) + \
'origin x y z: %s\n'%(' : '.join(map(str,info['origin']))) + \
'homogenization: %i\n'%info['homogenization'] + \
'microstructures: %i\n'%info['microstructures'])
if numpy.any(info['grid'] < 1):
file['croak'].write('invalid grid a b c.\n')
sys.exit()
if numpy.any(info['size'] <= 0.0):
file['croak'].write('invalid size x y z.\n')
sys.exit()
#--- generate grid --------------------------------------------------------------------------------
grid = vtk.vtkRectilinearGrid()
grid.SetDimensions([x+1 for x in info['grid']])
temp = []
for i in xrange(3):
temp.append(vtk.vtkDoubleArray())
temp[i].SetNumberOfTuples(info['grid'][i]+1)
for j in range(info['grid'][i]+1):
temp[i].InsertTuple1(j,j*info['size'][i]/info['grid'][i]+info['origin'][i])
if i == 0: grid.SetXCoordinates(temp[0])
if i == 1: grid.SetYCoordinates(temp[1])
if i == 2: grid.SetZCoordinates(temp[2])
#--- read microstructure information --------------------------------------------------------------
structure = vtk.vtkIntArray()
structure.SetName('Microstructures')
for line in content:
items = line.split()
if len(items) > 2:
if items[1].lower() == 'of': items = [int(items[2])]*int(items[0])
elif items[1].lower() == 'to': items = xrange(int(items[0]),1+int(items[2]))
else: items = map(int,items)
else: items = map(int,items)
for item in items:
structure.InsertNextValue(item)
grid.GetCellData().AddArray(structure)
#--- write data -----------------------------------------------------------------------------------
if file['name'] == 'STDIN':
outWriter = vtk.vtkRectilinearGridWriter()
outWriter.WriteToOutputStringOn()
outWriter.SetFileTypeToASCII()
outWriter.SetHeader('# powered by $Id$')
outWriter.SetInput(grid)
outWriter.Write()
sys.stdout.write(outWriter.GetOutputString()[0:outWriter.GetOutputStringLength()])
else:
(head,tail) = os.path.split(file['name'])
outWriter = vtk.vtkXMLRectilinearGridWriter()
outWriter.SetDataModeToBinary()
outWriter.SetCompressorTypeToZLib()
outWriter.SetFileName(os.path.join(head,'mesh_'+os.path.splitext(tail)[0]
+'.'+outWriter.GetDefaultFileExtension()))
outWriter.SetInput(grid)
outWriter.Write()