Animate Clock

from manimlib.imports import *

class ClockOrganization(VGroup):
  CONFIG = {
    "numbers" : 4,
    "radius" : 3.1,
    "color" : WHITE
  }

  def __init__(self, **kwargs):
    digest_config(self, kwargs, locals())
    self.generate_nodes()
    VGroup.__init__(self, *self.node_list,**kwargs)

  def generate_nodes(self):
    self.node_list = []
    for i in range(self.numbers):
      mobject = VMobject()
      number = TexMobject(str(i+1))
      circle = Circle(radius=0.4,color=self.color)
      mobject.add(number)
      mobject.add(circle)
      mobject.move_to(
        self.radius * np.cos((-TAU / self.numbers) * i + 17*TAU / 84) * RIGHT
        + self.radius * np.sin((-TAU / self.numbers) * i + 17*TAU / 84) * UP
      )
      self.node_list.append(mobject)

  def select_node(self, node):
    selected_node = self.node_list[node]
    selected_node.scale(1.2)
    selected_node.set_color(RED)

  def deselect_node(self, selected_node):
    node = self.node_list[selected_node]
    node.scale(0.8)
    node.set_color(self.color)

class Testing(Scene):
  def construct(self):
    test = ClockOrganization(numbers=21)
    self.play(Write(test), run_time=1.5)
    self.wait(2)
    num_circ=25
    test.node_list[0].generate_target()
    test.node_list[0].target.scale(1.2)
    test.node_list[0].target.set_color(RED)
    test.save_state()
    self.play(MoveToTarget(test.node_list[0]))
    self.wait(2)
    anims=[Restore(test)]
    anims2=[]
    anims3=[]
    theta=180*DEGREES/num_circ
    lag_constant=1.25
    for i in range(1,25):
      test.node_list[(1+i)%test.numbers-1].generate_target()
      test.node_list[(1+i)%test.numbers-1].target.scale(1.2)
      test.node_list[(1+i)%test.numbers-1].target.set_color(RED)
      if i in range(1,13):
        stop_smooth=(lag_constant*sigmoid(-10/12.5*(i-3.46-2.6))-sigmoid(-5))/(1-2*sigmoid(-5))
      if i in range(13, num_circ+1):
        stop_smooth=(lag_constant*sigmoid(10/12.5*(i-7.5-0.812-3.46-2.2))-sigmoid(-5))/(1-2*sigmoid(-5))
      if i in range(1,num_circ):
         anims.append(MoveToTarget(test.node_list[(1+i)%test.numbers-1],rate_func=there_and_back))
      else:
        anims.append(MoveToTarget(test.node_list[(1+i)%test.numbers-1]))
      anims.append(Animation(Mobject(),run_time=stop_smooth))
    self.play(
        AnimationGroup(*anims,lag_ratio=0.05,group=Group(*[anim.mobject for anim in anims]))
        )
    self.wait()
    thing = test.deepcopy()
    thing.deselect_node(4)
    self.play(Transform(test,thing))