I am trying to animate a coin flip using Manim.
For that I create a VGroup with a central Cylinder and two Dots for the two sides.

Still, when I rotate the object the bottom part doesn’t come to the front, it’ like the front side always stays there. Can someone help me?

class Coin(VGroup):

    def __init__(self, radius=1, height=None, **kwargs):
        super().__init__(**kwargs)

        if height is None:
            height = radius / 4

        self.top = Dot(radius=radius, color=GOLD_D, fill_opacity=1)
        self.top.move_to(OUT*height/2)
        
        self.bottom = self.top.copy()
        self.bottom.set_color(RED)
        self.bottom.move_to(IN*height/2)
        
        self.edge = Cylinder(radius=radius, height=height)
        self.edge.set_fill(GREY, opacity=1)
        # rotate the cylinder so that the upper face is towards the camera
        self.edge.rotate(90 * DEGREES, OUT)
        
        self.add(self.edge, self.bottom,  self.top)
    

class CoinFlip(Scene):
    
    def construct(self):
        c = Coin()
    
        self.play(Rotate(c, PI*.8, axis=RIGHT, about_point=ORIGIN))