DAMASK_EICMD/processing/post/vtk_addGridData.py

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#!/usr/bin/env python3
import os
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import sys
from io import StringIO
from optparse import OptionParser
import vtk
from vtk.util import numpy_support
import damask
scriptName = os.path.splitext(os.path.basename(__file__))[0]
scriptID = ' '.join([scriptName,damask.version])
# --------------------------------------------------------------------
# MAIN
# --------------------------------------------------------------------
parser = OptionParser(option_class=damask.extendableOption,
usage='%prog options [ASCIItable(s)]',
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description = "Add scalars, vectors, tensors, and/or an RGB tuple from ASCIItable "
+ "to existing VTK grid (.vtr/.vtk/.vtu).",
version = scriptID)
parser.add_option( '--vtk',
dest = 'vtk',
type = 'string', metavar = 'string',
help = 'VTK file name')
parser.add_option('-r', '--render',
dest = 'render',
action = 'store_true',
help = 'open output in VTK render window')
parser.add_option('-d', '--data',
dest = 'data',
action = 'extend', metavar = '<string LIST>',
help = 'scalar/vector value(s) label(s)')
parser.add_option('-t', '--tensor',
dest = 'tensor',
action = 'extend', metavar = '<string LIST>',
help = 'tensor (3x3) value label(s)')
parser.add_option('-c', '--color',
dest = 'color',
action = 'extend', metavar = '<string LIST>',
help = 'RGB color tuple label')
parser.set_defaults(data = [],
tensor = [],
color = [],
)
(options, filenames) = parser.parse_args()
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if filenames == []: filenames = [None]
if not options.vtk: parser.error('No VTK file specified.')
if not os.path.exists(options.vtk): parser.error('VTK file does not exist.')
vtk_file,vtk_ext = os.path.splitext(options.vtk)
if vtk_ext == '.vtr':
reader = vtk.vtkXMLRectilinearGridReader()
reader.SetFileName(options.vtk)
reader.Update()
rGrid = reader.GetOutput()
writer = vtk.vtkXMLRectilinearGridWriter()
elif vtk_ext == '.vtk':
reader = vtk.vtkGenericDataObjectReader()
reader.SetFileName(options.vtk)
reader.Update()
rGrid = reader.GetRectilinearGridOutput()
writer = vtk.vtkXMLRectilinearGridWriter()
elif vtk_ext == '.vtu':
reader = vtk.vtkXMLUnstructuredGridReader()
reader.SetFileName(options.vtk)
reader.Update()
rGrid = reader.GetOutput()
writer = vtk.vtkXMLUnstructuredGridWriter()
else:
parser.error('Unsupported VTK file type extension.')
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writer.SetFileName(vtk_file+'.'+writer.GetDefaultFileExtension())
Npoints = rGrid.GetNumberOfPoints()
Ncells = rGrid.GetNumberOfCells()
damask.util.croak('{}: {} points and {} cells...'.format(options.vtk,Npoints,Ncells))
for name in filenames:
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damask.util.report(scriptName,name)
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table = damask.Table.from_ASCII(StringIO(''.join(sys.stdin.read())) if name is None else name)
VTKarray = {}
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for data in options.data:
VTKarray[data] = numpy_support.numpy_to_vtk(table.get(data).copy(),
deep=True,array_type=vtk.VTK_DOUBLE)
VTKarray[data].SetName(data)
for color in options.color:
VTKarray[color] = numpy_support.numpy_to_vtk((table.get(color)*255).astype(int).copy(),
deep=True,array_type=vtk.VTK_UNSIGNED_CHAR)
VTKarray[color].SetName(color)
for tensor in options.tensor:
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data = damask.mechanics.symmetric(table.get(tensor).reshape(-1,3,3)).reshape(-1,9)
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VTKarray[tensor] = numpy_support.numpy_to_vtk(data.copy(),
deep=True,array_type=vtk.VTK_DOUBLE)
VTKarray[tensor].SetName(tensor)
# ------------------------------------------ add data ---------------------------------------
if len(table.data) == Npoints: mode = 'point'
elif len(table.data) == Ncells: mode = 'cell'
else:
damask.util.croak('Data count is incompatible with grid...')
continue
damask.util.croak('{} mode...'.format(mode))
for data in VTKarray:
if mode == 'cell': rGrid.GetCellData().AddArray(VTKarray[data])
elif mode == 'point': rGrid.GetPointData().AddArray(VTKarray[data])
rGrid.Modified()
# ------------------------------------------ output result ---------------------------------------
writer.SetDataModeToBinary()
writer.SetCompressorTypeToZLib()
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
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# render window. The render window interactively 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()