InteractorStyleTrackballActor

#!/usr/bin/env python3

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


def main():
    colors = vtkNamedColors()

    # Create a rendering window and renderer.
    ren = vtkRenderer(background=colors.GetColor3d('PaleGoldenrod'))
    ren_win = vtkRenderWindow(window_name='InteractorStyleTrackballActor')
    ren_win.AddRenderer(ren)

    # Create a render window interactor.
    iren = vtkRenderWindowInteractor()
    iren.render_window = ren_win

    style = vtkInteractorStyleTrackballActor()
    iren.interactor_style = style

    # Create the source, mapper and actor.
    sphere_source = vtkSphereSource()

    mapper = vtkPolyDataMapper()
    sphere_source >> mapper

    actor = vtkActor(mapper=mapper)
    actor.SetMapper(mapper)
    actor.property.color = colors.GetColor3d('Chartreuse')

    # Assign the actor to the renderer.
    ren.AddActor(actor)

    # Enable the user interface interactor.
    iren.Initialize()
    ren_win.Render()
    iren.Start()


if __name__ == '__main__':
    main()