class ContinuousMotion(Scene): def construct(self): func = lambda pos: np.sin(pos[0] / 2) * UR + np.cos(pos[1] / 2) * LEFT stream_lines = StreamLines(func, stroke_width=2, max_anchors_per_line=30) self.add(stream_lines) stream_lines.start_animation(warm_up=False, flow_speed=1.5) self.wait(stream_lines.virtual_time / stream_lines.flow_speed) class OpeningManim(Scene): def construct(self): title = T