Method update

examples/docs.py:165–169

(self)

@define
class Dolly(ExampleScene):
    def update(self):
        ExampleScene.update(self)
        self.state.height = 1.0
        self.state.focus = 0.32
        self.state.dolly = (1 - math.cos(self.cycle))

@define
class Focus(ExampleScene):