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#!/usr/bin/env python
from vtkmodules.vtkCommonCore import vtkMath
from vtkmodules.vtkFiltersCore import (
vtkContourFilter,
vtkPolyDataNormals,
)
from vtkmodules.vtkFiltersGeneral import vtkDataSetTriangleFilter
from vtkmodules.vtkFiltersParallel import (
vtkExtractUnstructuredGridPiece,
vtkPieceScalars,
)
from vtkmodules.vtkIOParallel import vtkMultiBlockPLOT3DReader
from vtkmodules.vtkRenderingCore import (
vtkActor,
vtkPolyDataMapper,
vtkRenderWindow,
vtkRenderWindowInteractor,
vtkRenderer,
)
import vtkmodules.vtkInteractionStyle
import vtkmodules.vtkRenderingFreeType
import vtkmodules.vtkRenderingOpenGL2
from vtkmodules.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()
math = vtkMath()
math.RandomSeed(22)
pl3d = vtkMultiBlockPLOT3DReader()
pl3d.SetXYZFileName(VTK_DATA_ROOT + "/Data/combxyz.bin")
pl3d.SetQFileName(VTK_DATA_ROOT + "/Data/combq.bin")
pl3d.SetScalarFunctionNumber(100)
pl3d.Update()
output = pl3d.GetOutput().GetBlock(0)
dst = vtkDataSetTriangleFilter()
dst.SetInputData(output)
extract = vtkExtractUnstructuredGridPiece()
extract.SetInputConnection(dst.GetOutputPort())
cf = vtkContourFilter()
cf.SetInputConnection(extract.GetOutputPort())
cf.SetValue(0, 0.24)
pdn = vtkPolyDataNormals()
pdn.SetInputConnection(cf.GetOutputPort())
ps = vtkPieceScalars()
ps.SetInputConnection(pdn.GetOutputPort())
mapper = vtkPolyDataMapper()
mapper.SetInputConnection(ps.GetOutputPort())
mapper.SetNumberOfPieces(3)
actor = vtkActor()
actor.SetMapper(mapper)
ren = vtkRenderer()
ren.AddActor(actor)
ren.ResetCamera()
camera = ren.GetActiveCamera()
# $camera SetPosition 68.1939 -23.4323 12.6465
# $camera SetViewUp 0.46563 0.882375 0.0678508
# $camera SetFocalPoint 3.65707 11.4552 1.83509
# $camera SetClippingRange 59.2626 101.825
renWin = vtkRenderWindow()
renWin.AddRenderer(ren)
iren = vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
iren.Initialize()
#iren.Start()
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