# InteractorStyleTrackballActor

VTKExamples/Python//InteractorStyleTrackballActor

### Description

Move, rotate, and scale an object in 3D.

### Code

InteractorStyleTrackballActor.py

    import vtk

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

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

    style = vtk.vtkInteractorStyleTrackballActor()
    iren.SetInteractorStyle(style)

    # create source
    sphereSource = vtk.vtkSphereSource()
    sphereSource.Update()

    # mapper
    mapper = vtk.vtkPolyDataMapper()
    mapper.SetInput(sphereSource.GetOutput())

    # actor
    actor = vtk.vtkActor()
    actor.SetMapper(mapper)

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

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