Add scalars, vectors, and/or an RGB tuple from an ASCIItable to existing VTK rectilinear grid (.vtr/.vtk).

This commit is contained in:
Philip Eisenlohr 2015-08-25 00:39:37 +00:00
parent cec6d7d220
commit d8afe9be23
1 changed files with 190 additions and 0 deletions

View File

@ -0,0 +1,190 @@
#!/usr/bin/env python
# -*- coding: UTF-8 no BOM -*-
import os,sys,string,re,vtk
import damask
from collections import defaultdict
from optparse import OptionParser
scriptID = string.replace('$Id$','\n','\\n')
scriptName = os.path.splitext(scriptID.split()[1])[0]
# --------------------------------------------------------------------
# MAIN
# --------------------------------------------------------------------
parser = OptionParser(option_class=damask.extendableOption, usage='%prog options [file[s]]', description = """
Add scalars, vectors, and/or an RGB tuple from an ASCIItable to existing VTK rectilinear grid (.vtr/.vtk).
""", version = scriptID)
parser.add_option('-m', '--mode',
dest = 'mode',
type = 'choice', metavar = 'string', choices = ['cell', 'point'],
help = 'cell-centered or point-centered data')
parser.add_option( '--vtk',
dest = 'vtk',
type = 'string', metavar = 'string',
help = 'VTK file name')
parser.add_option('-s', '--scalar',
dest = 'scalar',
action = 'extend', metavar = '<string LIST>',
help = 'scalar value label(s)')
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 tuple label')
parser.add_option('-r', '--render',
dest = 'render',
action = 'store_true',
help = 'open output in VTK render window')
parser.set_defaults(scalar = [],
vector = [],
color = [],
render = False,
)
(options, filenames) = parser.parse_args()
if not options.mode: parser.error('No data mode specified.')
if not options.vtk or not os.path.exists(options.vtk):
parser.error('VTK file does not exist')
if os.path.splitext(options.vtk)[1] == '.vtr':
reader = vtk.vtkXMLRectilinearGridReader()
reader.SetFileName(options.vtk)
reader.Update()
rGrid = reader.GetOutput()
elif os.path.splitext(options.vtk)[1] == '.vtk':
reader = vtk.vtkGenericDataObjectReader()
reader.SetFileName(options.vtk)
reader.Update()
rGrid = reader.GetRectilinearGridOutput()
else:
parser.error('unsupported VTK file type extension')
Npoints = rGrid.GetNumberOfPoints()
Ncells = rGrid.GetNumberOfCells()
sys.stderr.write('{}: {} points and {} cells...\n'.format(damask.util.emph(options.vtk),Npoints,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
table.croak(damask.util.emph(scriptName)+(': '+name if name else ''))
# --- 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:
table.croak('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 != []: table.croak(remarks)
if errors != []:
table.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]))
# ------------------------------------------ add data ---------------------------------------
for datatype,labels in active.items(): # loop over scalar,color
if datatype == 'color':
if options.mode == 'cell': rGrid.GetCellData().SetScalars(VTKarray[active['color'][0]])
elif options.mode == 'point': rGrid.GetPointData().SetScalars(VTKarray[active['color'][0]])
for me in labels: # loop over all requested items
if options.mode == 'cell': rGrid.GetCellData().AddArray(VTKarray[me])
elif options.mode == 'point': rGrid.GetPointData().AddArray(VTKarray[me])
rGrid.Modified()
if vtk.VTK_MAJOR_VERSION <= 5: rGrid.Update()
# ------------------------------------------ output result ---------------------------------------
writer = vtk.vtkXMLRectilinearGridWriter()
writer.SetDataModeToBinary()
writer.SetCompressorTypeToZLib()
writer.SetFileName(os.path.splitext(options.vtk)[0]+'_added.vtr')
if vtk.VTK_MAJOR_VERSION <= 5: writer.SetInput(rGrid)
else: writer.SetInputData(rGrid)
writer.Write()
# ------------------------------------------ render result ---------------------------------------
if options.render:
mapper = vtk.vtkDataSetMapper()
mapper.SetInputData(rGrid)
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)
#ren.ResetCamera()
#ren.GetActiveCamera().Zoom(1.5)
iren.Initialize()
renWin.Render()
iren.Start()