#!/usr/bin/env python2.7
# -*- coding: UTF-8 no BOM -*-
import os,vtk
import damask
from collections import defaultdict
from optparse import OptionParser
scriptName = os.path.splitext(os.path.basename(__file__))[0]
scriptID = ' '.join([scriptName,damask.version])
# --------------------------------------------------------------------
# MAIN
# --------------------------------------------------------------------
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).
""", version = scriptID)
parser.add_option( '--vtk',
dest = 'vtk',
type = 'string', metavar = 'string',
help = 'VTK file name')
parser.add_option( '--inplace',
dest = 'inplace',
action = 'store_true',
help = 'modify VTK file in-place')
parser.add_option('-r', '--render',
dest = 'render',
action = 'store_true',
help = 'open output in VTK render window')
parser.add_option('-s', '--scalar', dest='scalar', action='extend',
metavar ='<string LIST>',
help = 'scalar values')
parser.add_option('-v', '--vector',
dest = 'vector',
action = 'extend', metavar = '<string LIST>',
help = 'vector value label(s)')
parser.add_option('-c', '--color', dest='color', action='extend',
metavar ='<string LIST>',
help = 'RGB color tuples')
parser.set_defaults(scalar = [],
vector = [],
color = [],
inplace = False,
render = False,
)
(options, filenames) = parser.parse_args()
if not options.vtk: parser.error('No VTK file specified.')
if not os.path.exists(options.vtk): parser.error('VTK file does not exist.')
if os.path.splitext(options.vtk)[1] == '.vtp':
reader = vtk.vtkXMLPolyDataReader()
reader.SetFileName(options.vtk)
reader.Update()
Polydata = reader.GetOutput()
elif os.path.splitext(options.vtk)[1] == '.vtk':
reader = vtk.vtkGenericDataObjectReader()
reader.SetFileName(options.vtk)
reader.Update()
Polydata = reader.GetPolyDataOutput()
else:
parser.error('Unsupported VTK file type extension.')
Npoints = Polydata.GetNumberOfPoints()
Ncells = Polydata.GetNumberOfCells()
Nvertices = Polydata.GetNumberOfVerts()
if Npoints != Ncells or Npoints != Nvertices:
parser.error('Number of points, cells, and vertices in VTK differ from each other.')
damask.util.croak('{}: {} points, {} vertices, and {} cells...'.format(options.vtk,Npoints,Nvertices,Ncells))
# --- loop over input files -------------------------------------------------------------------------
if filenames == []: filenames = [None]
for name in filenames:
try: table = damask.ASCIItable(name = name,
buffered = False,
readonly = True)
except: continue
damask.util.report(scriptName, name)
# --- interpret header ----------------------------------------------------------------------------
table.head_read()
remarks = []
errors = []
VTKarray = {}
active = defaultdict(list)
for datatype,dimension,label in [['scalar',1,options.scalar],
['vector',3,options.vector],
['color',3,options.color],
]:
for i,dim in enumerate(table.label_dimension(label)):
me = label[i]
if dim == -1: remarks.append('{} "{}" not found...'.format(datatype,me))
elif dim > dimension: remarks.append('"{}" not of dimension {}...'.format(me,dimension))
else:
remarks.append('adding {} "{}"...'.format(datatype,me))
active[datatype].append(me)
if datatype in ['scalar','vector']: VTKarray[me] = vtk.vtkDoubleArray()
elif datatype == 'color': VTKarray[me] = vtk.vtkUnsignedCharArray()
VTKarray[me].SetNumberOfComponents(dimension)
VTKarray[me].SetName(label[i])
if remarks != []: damask.util.croak(remarks)
if errors != []:
damask.util.croak(errors)
table.close(dismiss = True)
continue
# ------------------------------------------ process data ---------------------------------------
while table.data_read(): # read next data line of ASCII table
for datatype,labels in active.items(): # loop over scalar,color
for me in labels: # loop over all requested items
theData = [table.data[i] for i in table.label_indexrange(me)] # read strings
if datatype == 'color': VTKarray[me].InsertNextTuple3(*map(lambda x: int(255.*float(x)),theData))
elif datatype == 'vector': VTKarray[me].InsertNextTuple3(*map(float,theData))
elif datatype == 'scalar': VTKarray[me].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(VTKarray[active['color'][0]])
Polydata.GetCellData().SetScalars(VTKarray[active['color'][0]])
for me in labels: # loop over all requested items
Polydata.GetPointData().AddArray(VTKarray[me])
Polydata.GetCellData().AddArray(VTKarray[me])
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]+('.vtp' if options.inplace else '_added.vtp'))
if vtk.VTK_MAJOR_VERSION <= 5: writer.SetInput(Polydata)
else: writer.SetInputData(Polydata)
writer.Write()
# ------------------------------------------ render result ---------------------------------------
if options.render:
mapper = vtk.vtkDataSetMapper()
mapper.SetInputData(Polydata)
actor = vtk.vtkActor()
actor.SetMapper(mapper)
# Create the graphics structure. The renderer renders into the
# render window. The render window interactor captures mouse events
# and will perform appropriate camera or actor manipulation
# depending on the nature of the events.
ren = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren)
ren.AddActor(actor)
ren.SetBackground(1, 1, 1)
renWin.SetSize(200, 200)
iren = vtk.vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
iren.Initialize()
renWin.Render()
iren.Start()