Manim无法同时播放两个动画：轮形对象平移与旋转不同步

你的核心问题是用wheel.animate.rotate和wheel.animate.shift分别创建了两个独立的动画对象，要么分开播放导致先后执行，要么同时播放时因animate的状态覆盖问题，只有一个变换生效。下面是两种可行的解决方法：

方法一：链式animate调用 #

将旋转和平移操作链式写在同一个animate调用中，Manim会自动同步执行这两个变换：

from manim import *
import numpy as np

class TwoDShapes(Scene):
    def construct(self):
        circle = Circle(radius=3).shift(LEFT * 4)

        points = []
        squares = []
        
        num_squares = 20
        angle_increment = 2 * PI / num_squares  
       
        for i in range(num_squares):
            points.append(circle.point_at_angle(angle_increment * i))

            square = Square(side_length=0.25)
            square.move_to(points[i])
            squares.append(square)

        START = (-8, -3, 0)
        END = (8, -3, 0)
        line = Line(START, END)

        self.play(Create(line))
        self.play(Create(circle))

        for k in range(num_squares): 
            self.play(Create(squares[k], run_time=0.2))
            
        for k in range(num_squares): 
            self.play(Rotate(squares[k], angle_increment * k, run_time=0.2))

        wheel = Group(*squares, circle)

        # 关键修改：链式合并旋转和平移动画
        roll_animation = wheel.animate.rotate(4*2*PI).shift(RIGHT * 8)
        self.play(roll_animation, run_time=4)

        self.wait(1)
        text = Text("It works now! :)")
        text.move_to(LEFT * 3)
        self.play(Write(text))
        self.wait(1)

方法二：使用基础动画类+AnimationGroup #

直接创建Rotate和Shift动画实例，放入AnimationGroup中同步播放，这种方式更灵活，适合需要单独控制每个动画参数的场景：

from manim import *
import numpy as np

class TwoDShapes(Scene):
    def construct(self):
        circle = Circle(radius=3).shift(LEFT * 4)

        points = []
        squares = []
        
        num_squares = 20
        angle_increment = 2 * PI / num_squares  
       
        for i in range(num_squares):
            points.append(circle.point_at_angle(angle_increment * i))

            square = Square(side_length=0.25)
            square.move_to(points[i])
            squares.append(square)

        START = (-8, -3, 0)
        END = (8, -3, 0)
        line = Line(START, END)

        self.play(Create(line))
        self.play(Create(circle))

        for k in range(num_squares): 
            self.play(Create(squares[k], run_time=0.2))
            
        for k in range(num_squares): 
            self.play(Rotate(squares[k], angle_increment * k, run_time=0.2))

        wheel = Group(*squares, circle)

        # 关键修改：创建基础动画实例并放入AnimationGroup
        rotation_animation = Rotate(wheel, 4*2*PI)
        shift_animation = Shift(wheel, RIGHT * 8)
        self.play(AnimationGroup(rotation_animation, shift_animation, lag_ratio=0), run_time=4)

        self.wait(1)
        text = Text("It works now! :)")
        text.move_to(LEFT * 3)
        self.play(Write(text))
        self.wait(1)

额外优化：物理真实的滚动匹配 #

为了让轮子滚动更符合现实，平移距离应该等于轮子周长乘以旋转圈数。轮子半径3，周长是2*PI*3=6*PI，4圈对应的平移距离是4*6*PI≈75.4，你可以把RIGHT * 8改成RIGHT * (4*2*PI*3)，这样动画会更真实。

内容的提问来源于stack exchange，提问作者Pablo Dibildox