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#!/usr/bin/env python
from vtkmodules.vtkFiltersCore import vtkContourFilter
from vtkmodules.vtkFiltersGeometry import vtkDataSetSurfaceFilter
from vtkmodules.vtkFiltersParallel import vtkTransmitStructuredDataPiece
from vtkmodules.vtkFiltersSources import vtkSphereSource
from vtkmodules.vtkIOLegacy import vtkDataSetWriter
from vtkmodules.vtkIOParallel import (
vtkMultiBlockPLOT3DReader,
vtkPDataSetReader,
vtkPDataSetWriter,
)
from vtkmodules.vtkImagingSources import vtkImageMandelbrotSource
from vtkmodules.vtkParallelCore import vtkDummyController
from vtkmodules.vtkRenderingCore import (
vtkActor,
vtkPolyDataMapper,
vtkRenderWindow,
vtkRenderWindowInteractor,
vtkRenderer,
)
import vtkmodules.vtkInteractionStyle
import vtkmodules.vtkRenderingFreeType
import vtkmodules.vtkRenderingOpenGL2
from vtkmodules.util.misc import vtkGetDataRoot
import os
VTK_DATA_ROOT = vtkGetDataRoot()
def DoPlot3DReaderTests(reader):
# Ensure disable function works.
reader.RemoveAllFunctions()
reader.AddFunction(211) # vorticity magnitude.
reader.Update()
if reader.GetOutput().GetBlock(0).GetPointData().GetArray("VorticityMagnitude") is None:
print("Failed to read `VorticityMagnitude`")
sys.exit(1)
if reader.GetOutput().GetBlock(0).GetPointData().GetArray("Velocity") is None:
print("Failed to read `Velocity` to compute `VorticityMagnitude`")
sys.exit(1)
reader.RemoveAllFunctions()
reader.Update()
if reader.GetOutput().GetBlock(0).GetPointData().GetArray("VorticityMagnitude") is not None:
print("Failed to not-read `VorticityMagnitude`")
sys.exit(1)
# Let's ensure intermediate results can be dropped.
reader.PreserveIntermediateFunctionsOff()
reader.AddFunction(211) # vorticity magnitude.
reader.Update()
if reader.GetOutput().GetBlock(0).GetPointData().GetArray("Velocity") is not None:
print("PreserveIntermediateFunctionsOff is not working as expected.")
sys.exit(1)
# Create the RenderWindow, Renderer and both Actors
#
ren1 = vtkRenderer()
renWin = vtkRenderWindow()
renWin.AddRenderer(ren1)
iren = vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
#
# If the current directory is writable, then test the witers
#
if os.access(".", os.W_OK):
# ====== Structured Grid ======
# First save out a grid in parallel form.
reader = vtkMultiBlockPLOT3DReader()
reader.SetXYZFileName(VTK_DATA_ROOT + "/Data/combxyz.bin")
reader.SetQFileName(VTK_DATA_ROOT + "/Data/combq.bin")
reader.Update()
# before we continue on with the test, let's quickly do some
# vtkMultiBlockPLOT3DReader option tests.
DoPlot3DReaderTests(reader)
contr = vtkDummyController()
extract = vtkTransmitStructuredDataPiece()
extract.SetController(contr)
extract.SetInputData(reader.GetOutput().GetBlock(0))
writer = vtkPDataSetWriter()
writer.SetFileName("comb.pvtk")
writer.SetInputConnection(extract.GetOutputPort())
writer.SetNumberOfPieces(4)
writer.Write()
pReader = vtkPDataSetReader()
pReader.SetFileName("comb.pvtk")
surface = vtkDataSetSurfaceFilter()
surface.SetInputConnection(pReader.GetOutputPort())
mapper = vtkPolyDataMapper()
mapper.SetInputConnection(surface.GetOutputPort())
mapper.SetNumberOfPieces(2)
mapper.SetPiece(0)
mapper.SetGhostLevel(1)
mapper.Update()
w = vtkDataSetWriter()
# w.SetInputData(mapper.GetInput())
w.SetInputData(surface.GetInput())
w.SetFileName(os.path.join(".", "foo.vtk"))
w.SetFileTypeToASCII()
w.Write()
os.remove("comb.pvtk")
os.remove("comb.0.vtk")
os.remove("comb.1.vtk")
os.remove("comb.2.vtk")
os.remove("comb.3.vtk")
actor = vtkActor()
actor.SetMapper(mapper)
actor.SetPosition(-5,0,-29)
# Add the actors to the renderer, set the background and size
#
ren1.AddActor(actor)
# ====== ImageData ======
# First save out a grid in parallel form.
fractal = vtkImageMandelbrotSource()
fractal.SetWholeExtent(0,9,0,9,0,9)
fractal.SetSampleCX(0.1,0.1,0.1,0.1)
fractal.SetMaximumNumberOfIterations(10)
extract2 = vtkTransmitStructuredDataPiece()
extract2.SetController(contr)
extract2.SetInputConnection(fractal.GetOutputPort())
writer2 = vtkPDataSetWriter()
writer.SetFileName("fractal.pvtk")
writer.SetInputConnection(extract2.GetOutputPort())
writer.SetNumberOfPieces(4)
writer.Write()
pReader2 = vtkPDataSetReader()
pReader2.SetFileName("fractal.pvtk")
iso = vtkContourFilter()
iso.SetInputConnection(pReader2.GetOutputPort())
iso.SetValue(0,4)
mapper2 = vtkPolyDataMapper()
mapper2.SetInputConnection(iso.GetOutputPort())
mapper2.SetNumberOfPieces(3)
mapper2.SetPiece(0)
mapper2.SetGhostLevel(0)
mapper2.Update()
# Strip the ghost cells requested by the contour filter
mapper2.GetInput().RemoveGhostCells()
os.remove("fractal.pvtk")
os.remove("fractal.0.vtk")
os.remove("fractal.1.vtk")
os.remove("fractal.2.vtk")
os.remove("fractal.3.vtk")
actor2 = vtkActor()
actor2.SetMapper(mapper2)
actor2.SetScale(5,5,5)
actor2.SetPosition(6,6,6)
# Add the actors to the renderer, set the background and size
#
ren1.AddActor(actor2)
# ====== PolyData ======
# First save out a grid in parallel form.
sphere = vtkSphereSource()
sphere.SetRadius(2)
writer3 = vtkPDataSetWriter()
writer3.SetFileName("sphere.pvtk")
writer3.SetInputConnection(sphere.GetOutputPort())
writer3.SetNumberOfPieces(4)
writer3.Write()
pReader3 = vtkPDataSetReader()
pReader3.SetFileName("sphere.pvtk")
mapper3 = vtkPolyDataMapper()
mapper3.SetInputConnection(pReader3.GetOutputPort())
mapper3.SetNumberOfPieces(2)
mapper3.SetPiece(0)
mapper3.SetGhostLevel(1)
mapper3.Update()
os.remove("sphere.pvtk")
os.remove("sphere.0.vtk")
os.remove("sphere.1.vtk")
os.remove("sphere.2.vtk")
os.remove("sphere.3.vtk")
actor3 = vtkActor()
actor3.SetMapper(mapper3)
actor3.SetPosition(6,6,6)
# Add the actors to the renderer, set the background and size
#
ren1.AddActor(actor3)
# do some extra checking to make sure we have the proper number of cells
if surface.GetOutput().GetNumberOfCells() != 4016:
print("surface output should have 4016 cells but has %d" % surface.GetOutput().GetNumberOfCells())
sys.exit(1)
if iso.GetOutput().GetNumberOfCells() != 89:
print("iso output should have 89 cells but has %d" % iso.GetOutput().GetNumberOfCells())
sys.exit(1)
if pReader3.GetOutput().GetNumberOfCells() != 48:
print("pReader3 output should have 48 cells but has %d" % pReader3.GetOutput().GetNumberOfCells())
sys.exit(1)
ren1.SetBackground(0.1,0.2,0.4)
renWin.SetSize(300,300)
# render the image
#
cam1 = ren1.GetActiveCamera()
cam1.Azimuth(20)
cam1.Elevation(40)
ren1.ResetCamera()
cam1.Zoom(1.2)
iren.Initialize()
# --- end of script --
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