add scalar and RGB tuples from ASCIItable to existing VTK voxel cloud (*.vtu)

This commit is contained in:
Philip Eisenlohr 2014-01-27 14:05:03 +00:00
parent b9e55b4495
commit 13fed38a2f
1 changed files with 154 additions and 0 deletions

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#!/usr/bin/env python
import os,sys,string,re,numpy,vtk
import damask
from optparse import OptionParser, OptionGroup, Option, SUPPRESS_HELP
scriptID = '$Id: vtk_addPointcloudData.py 2770 2013-12-09 15:58:35Z p.eisenlohr $'
scriptName = scriptID.split()[1]
#--------------------------------------------------------------------------------------------------
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)
parser = OptionParser(option_class=extendedOption, usage='%prog options [file[s]]', description = """
Add scalar and RGB tuples from ASCIItable to existing VTK voxel cloud (.vtu).
""" + string.replace(scriptID,'\n','\\n')
)
parser.add_option('-v', '--vtk', dest='vtk', type='string', \
help = 'VTK file name')
parser.add_option('-s', '--scalar', dest='scalar', action='extend', \
help = 'scalar values')
parser.add_option('-c', '--color', dest='color', action='extend', \
help = 'RGB color tuples')
parser.set_defaults(scalar = [])
parser.set_defaults(color = [])
(options, filenames) = parser.parse_args()
datainfo = { # list of requested labels per datatype
'scalar': {'len':1,
'label':[]},
'color': {'len':3,
'label':[]},
}
if not os.path.exists(options.vtk):
options.error('VTK file does not exist'); sys.exit()
reader = vtk.vtkXMLUnstructuredGridReader()
reader.SetFileName(options.vtk)
reader.Update()
Npoints = reader.GetNumberOfPoints()
Ncells = reader.GetNumberOfCells()
uGrid = reader.GetOutput()
#if Npoints != Ncells or Npoints != Nvertices:
# parser.error('Number of points, cells, and vertices in VTK differ from each other'); sys.exit()
if options.scalar != None: datainfo['scalar']['label'] += options.scalar
if options.color != None: datainfo['color']['label'] += options.color
# ------------------------------------------ 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':sys.stderr, 'croak':sys.stderr})
#--- loop over input files ------------------------------------------------------------------------
for file in files:
if file['name'] != 'STDIN': file['croak'].write('\033[1m'+scriptName+'\033[0m: '+file['name']+'\n')
else: file['croak'].write('\033[1m'+scriptName+'\033[0m\n')
table = damask.ASCIItable(file['input'],file['output'],False) # make unbuffered ASCII_table
table.head_read() # read ASCII header info
# --------------- figure out columns to process
active = {}
column = {}
array = {}
for datatype,info in datainfo.items():
for label in info['label']:
foundIt = False
for key in ['1_'+label,label]:
if key in table.labels:
foundIt = True
if datatype not in active: active[datatype] = []
if datatype not in column: column[datatype] = {}
if datatype not in array: array[datatype] = {}
active[datatype].append(label)
column[datatype][label] = table.labels.index(key) # remember columns of requested data
if datatype == 'scalar':
array[datatype][label] = vtk.vtkDoubleArray()
array[datatype][label].SetNumberOfComponents(1)
array[datatype][label].SetName(label)
elif datatype == 'color':
array[datatype][label] = vtk.vtkUnsignedCharArray()
array[datatype][label].SetNumberOfComponents(3)
array[datatype][label].SetName(label)
if not foundIt:
file['croak'].write('column %s not found...\n'%label)
# ------------------------------------------ process data ---------------------------------------
while table.data_read(): # read next data line of ASCII table
for datatype,labels in active.items(): # loop over scalar,color
for label in labels: # loop over all requested items
theData = table.data[column[datatype][label]:\
column[datatype][label]+datainfo[datatype]['len']] # read strings
if datatype == 'color':
theData = map(lambda x: int(255.*float(x)),theData)
array[datatype][label].InsertNextTuple3(theData[0],theData[1],theData[2],)
elif datatype == 'scalar':
array[datatype][label].InsertNextValue(float(theData[0]))
file['input'].close() # close input ASCII table
# ------------------------------------------ add data ---------------------------------------
for datatype,labels in active.items(): # loop over scalar,color
if datatype == 'color':
# Polydata.GetPointData().SetScalars(array[datatype][labels[0]])
uGrid.GetCellData().SetScalars(array[datatype][labels[0]])
for label in labels: # loop over all requested items
# Polydata.GetPointData().AddArray(array[datatype][label])
uGrid.GetCellData().AddArray(array[datatype][label])
uGrid.Modified()
if vtk.VTK_MAJOR_VERSION <= 5:
uGrid.Update()
# ------------------------------------------ output result ---------------------------------------
writer = vtk.vtkXMLUnstructuredGridWriter()
writer.SetDataModeToBinary()
writer.SetCompressorTypeToZLib()
writer.SetFileName(os.path.splitext(options.vtk)[0]+'_added.vtu')
if vtk.VTK_MAJOR_VERSION <= 5:
writer.SetInput(uGrid)
else:
writer.SetInputData(uGrid)
writer.Write()