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#!/usr/bin/env python
from vtkmodules.vtkIOLegacy import vtkSimplePointsReader
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()
reader = vtkSimplePointsReader()
reader.SetFileName(VTK_DATA_ROOT + "/Data/points.txt")
mapper = vtkPolyDataMapper()
mapper.SetInputConnection(reader.GetOutputPort())
actor = vtkActor()
actor.SetMapper(mapper)
actor.GetProperty().SetPointSize(5)
ren1 = vtkRenderer()
renWin = vtkRenderWindow()
renWin.AddRenderer(ren1)
iren = vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
ren1.AddActor(actor)
renWin.SetSize(300, 300)
iren.Initialize()
renWin.Render()
#iren.Start()
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