PointSource

#!/usr/bin/env python

# noinspection PyUnresolvedReferences
import vtkmodules.vtkInteractionStyle
# noinspection PyUnresolvedReferences
import vtkmodules.vtkRenderingOpenGL2
from vtkmodules.vtkCommonColor import vtkNamedColors
from vtkmodules.vtkFiltersSources import vtkPointSource
from vtkmodules.vtkRenderingCore import (
    vtkActor,
    vtkPolyDataMapper,
    vtkRenderWindow,
    vtkRenderWindowInteractor,
    vtkRenderer
)


def main():
    colors = vtkNamedColors()

    # create a rendering window and renderer
    ren = vtkRenderer()
    renWin = vtkRenderWindow()
    renWin.AddRenderer(ren)
    renWin.SetWindowName('PointSource')

    # create a renderwindowinteractor
    iren = vtkRenderWindowInteractor()
    iren.SetRenderWindow(renWin)

    # Create a point cloud
    src = vtkPointSource()
    src.SetCenter(0, 0, 0)
    src.SetNumberOfPoints(50)
    src.SetRadius(5)
    src.Update()

    # mapper
    mapper = vtkPolyDataMapper()
    mapper.SetInputConnection(src.GetOutputPort())

    # actor
    actor = vtkActor()
    actor.SetMapper(mapper)
    actor.GetProperty().SetColor(colors.GetColor3d('Tomato'))
    actor.GetProperty().SetPointSize(4)

    # assign actor to the renderer
    ren.AddActor(actor)
    ren.SetBackground(colors.GetColor3d('DarkGreen'))

    # enable user interface interactor
    iren.Initialize()
    renWin.Render()
    iren.Start()


if __name__ == '__main__':
    main()