class Lights():
    def __init__(self):
        pass
        # self.ambient = self.render.attach_new_node(p3d.AmbientLight('ambient'))
        # self.ambient.node().set_color((.2, .2, .2,.2))
        # self.render.set_light(self.ambient)

        # point = p3d.PointLight('lamp')
        # point.set_color((1, 0.9, 0.7, 1))
        # point.set_attenuation((1, 0.1, 0.01))  # 常数/线性/二次衰减
        # point_np = self.render.attach_new_node(point)
        # point_np.set_pos(0, 0, 0)
        # self.render.set_light(point_np)
        # self.gizmo.attach(point_np)

        # sun = p3d.DirectionalLight('sun')
        # sun.set_color((1.0, 0.95, 0.9, 1))
        # sun.set_shadow_caster(True, 2048, 2048)  # 阴影，可调分辨率
        # self.sun_np = self.render.attach_new_node(sun)
        # self.render.set_light(self.sun_np)
        # self.set_frame_rate_meter(True)
        # self.gizmo.attach(self.sun_np)