def main
Gtk.init
Gtk::GL.init
window = Gtk::Window.new
window.set_title("A GtkGLExtVTKRenderWindow Demo!")
window.signal_connect("destroy"){ Gtk.main_quit }
window.signal_connect("delete_event"){ Gtk.main_quit }
window.set_border_width(10)
vtkgtk = GtkGLExtVTKRenderWindow.new
vtkgtk.show
vbox = Gtk::VBox.new(false, 3)
vbox.show
vbox.pack_start(vtkgtk)
button = Gtk::Button.new('My Button')
button.show
vbox.pack_start(button)
window.add(vbox)
window.set_size_request(400, 400)
cone = Vtk::ConeSource.new
cone.SetResolution(80)
coneMapper = Vtk::PolyDataMapper.new
coneMapper.SetInput(cone.GetOutput)
coneActor = Vtk::Actor.new
coneActor.SetMapper(coneMapper)
coneActor.GetProperty.SetColor(0.5, 0.5, 1.0)
ren = Vtk::Renderer.new
vtkgtk.GetRenderWindow.AddRenderer(ren)
ren.AddActor(coneActor)
window.show
Gtk.main
end