ImageTracerWidgetNonPlanar

#!/usr/bin/env python3

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


def main():
    colors = vtkNamedColors()

    sphere_source = vtkSphereSource()

    # Create a mapper and actor.
    mapper = vtkPolyDataMapper()
    sphere_source >> mapper
    actor = vtkActor(mapper=mapper)
    actor.property.color = colors.GetColor3d('MistyRose')

    # A renderer and render window.
    renderer = vtkRenderer(background=colors.GetColor3d('SlateGray'))
    render_window = vtkRenderWindow(window_name='ImageTracerWidgetNonPlanar')
    render_window.AddRenderer(renderer)

    renderer.AddActor(actor)

    # An interactor.
    render_window_interactor = vtkRenderWindowInteractor()
    render_window_interactor.render_window = render_window
    style = vtkInteractorStyleTrackballCamera()
    render_window_interactor.interactor_style = style

    tracer_widget = vtkImageTracerWidget()
    tracer_widget.interactor = render_window_interactor
    tracer_widget.SetViewProp(actor)

    render_window.Render()

    render_window_interactor.Initialize()
    render_window.Render()
    tracer_widget.On()

    # Begin the mouse interaction.
    render_window_interactor.Start()


if __name__ == '__main__':
    main()