DAMASK_EICMD/processing/post/vtk_addPointcloudData.py

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#!/usr/bin/env python
# -*- coding: UTF-8 no BOM -*-
import os,sys,string,vtk
import damask
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from optparse import OptionParser
scriptName = os.path.splitext(os.path.basename(__file__))[0]
scriptID = ' '.join([scriptName,damask.version])
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# --------------------------------------------------------------------
# MAIN
# --------------------------------------------------------------------
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parser = OptionParser(option_class=damask.extendableOption, usage='%prog options [file[s]]', description = """
Add scalar and RGB tuples from ASCIItable to existing VTK point cloud (.vtp).
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""", version = scriptID)
parser.add_option('-v', '--vtk', dest='vtk', \
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):
parser.error('VTK file does not exist'); sys.exit()
reader = vtk.vtkXMLPolyDataReader()
reader.SetFileName(options.vtk)
reader.Update()
Npoints = reader.GetNumberOfPoints()
Ncells = reader.GetNumberOfCells()
Nvertices = reader.GetNumberOfVerts()
Polydata = 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]))
table.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]])
Polydata.GetCellData().SetScalars(array[datatype][labels[0]])
for label in labels: # loop over all requested items
Polydata.GetPointData().AddArray(array[datatype][label])
Polydata.GetCellData().AddArray(array[datatype][label])
Polydata.Modified()
if vtk.VTK_MAJOR_VERSION <= 5:
Polydata.Update()
# ------------------------------------------ output result ---------------------------------------
writer = vtk.vtkXMLPolyDataWriter()
writer.SetDataModeToBinary()
writer.SetCompressorTypeToZLib()
writer.SetFileName(os.path.splitext(options.vtk)[0]+'_added.vtp')
if vtk.VTK_MAJOR_VERSION <= 5:
writer.SetInput(Polydata)
else:
writer.SetInputData(Polydata)
writer.Write()