generate ParaView mesh from spectral geometry (*.geom) description file to check for correct grain assignment
This commit is contained in:
Philip Eisenlohr
parent
4a2078e965
commit
9f5c9142e5
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#!/usr/bin/env python
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# -*- coding: UTF-8 no BOM -*-
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import os,sys,string,numpy
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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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def outStdout(cmd,locals):
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if cmd[0:3] == '(!)':
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exec(cmd[3:])
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elif cmd[0:3] == '(?)':
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cmd = eval(cmd[3:])
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print cmd
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else:
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print cmd
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return
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def outFile(cmd,locals):
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if cmd[0:3] == '(!)':
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exec(cmd[3:])
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elif cmd[0:3] == '(?)':
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cmd = eval(cmd[3:])
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locals['filepointer'].write(cmd+'\n')
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else:
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locals['filepointer'].write(cmd+'\n')
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return
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def output(cmds,locals,dest):
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for cmd in cmds:
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if isinstance(cmd,list):
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output(cmd,locals,dest)
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else:
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{\
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'File': outFile,\
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'Stdout': outStdout,\
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}[dest](str(cmd),locals)
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return
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# +++++++++++++++++++++++++++++++++++++++++++++++++++
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def vtk_writeASCII_mesh(dim,res,data):
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# +++++++++++++++++++++++++++++++++++++++++++++++++++
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""" function writes data array defined on a rectilinear grid """
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N = res[0]*res[1]*res[2]
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cmds = [\
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'# vtk DataFile Version 3.1',
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'powered by $Id$',
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'ASCII',
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'DATASET RECTILINEAR_GRID',
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'DIMENSIONS %i %i %i'%(res[0]+1,res[1]+1,res[2]+1),
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'X_COORDINATES %i float'%(res[0]+1),
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' '.join(map(str,[i*dim[0]/res[0] for i in range(res[0]+1)])),
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'Y_COORDINATES %i float'%(res[1]+1),
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' '.join(map(str,[i*dim[1]/res[1] for i in range(res[1]+1)])),
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'Z_COORDINATES %i float'%(res[2]+1),
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' '.join(map(str,[i*dim[2]/res[2] for i in range(res[2]+1)])),
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'CELL_DATA %i'%N,
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]
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for datatype in data:
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for item in data[datatype]:
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cmds += [\
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'%s %s float'%(datatype.upper()+{True:'',False:'S'}[datatype.lower().endswith('s')],item),
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'LOOKUP_TABLE default',
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[[['\t'.join(map(str,data[datatype][item][:,j,k]))] for j in range(res[1])] for k in range(res[2])]
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]
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return cmds
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# ----------------------- MAIN -------------------------------
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mapping = {
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'resolution': {'a':0,'b':1,'c':2},
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'dimension': {'x':0,'y':1,'z':2},
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}
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parser = OptionParser(option_class=extendedOption, usage='%prog geomfile[s]', description = """
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Produce VTK point file from geom data
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$Id$
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""")
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(options, args) = parser.parse_args()
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for filename in args:
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if not os.path.exists(filename):
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continue
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print filename
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file = open(filename)
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res = [0,0,0]
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resolutionData = file.readline().split()
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if resolutionData[0].lower() != 'resolution':
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sys.stderr.write('no resolution info found...\n')
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continue
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else:
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for i in range(1,6,2):
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if resolutionData[i] not in mapping['resolution']:
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sys.stderr.write('corrupt resolution info...\n')
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continue
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else:
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res[mapping['resolution'][resolutionData[i]]] = int(resolutionData[i+1])
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N = res[0]*res[1]*res[2]
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dim = [0.0,0.0,0.0]
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dimensionData = file.readline().split()
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if dimensionData[0].lower() != 'dimension':
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sys.stderr.write('no dimension info found...\n')
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continue
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else:
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for i in range(1,6,2):
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if dimensionData[i] not in mapping['dimension']:
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sys.stderr.write('corrupt dimension info...\n')
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continue
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else:
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dim[mapping['dimension'][dimensionData[i]]] = float(dimensionData[i+1])
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print 'dimension',dim
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file.readline() # skip homogenization
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data = {'scalar':{'texture':numpy.zeros(N,'i').reshape(res[2],res[1],res[0]).T}}
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for k in range(res[2]):
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for j in range(res[1]):
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for i in range(res[0]):
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data['scalar']['texture'][i,j,k] = int(file.readline().split()[0])
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out = {}
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out['mesh'] = vtk_writeASCII_mesh(dim,res,data)
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for what in out.keys():
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(head,tail) = os.path.split(filename)
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vtk = open(os.path.join(head,'%s_'%what+os.path.splitext(tail)[0]+'.vtk'), 'w')
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output(out[what],{'filepointer':vtk},'File')
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vtk.close()
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