[44]AnimationGroup

 

lag_ration test

class AnimationGroupTest(Scene):
    def construct(self):        
        self.animation_group()

    def animation_group(self):
        self.t1 = TextMobject("Hello").shift(UP*2).to_edge(LEFT, buff=1)
        self.t2 = TextMobject("Wordld").shift(UP*2).to_edge(RIGHT, buff=1)

        self.shape1 = Circle().to_edge(LEFT, buff=1)
        self.shape2 = Square().to_edge(RIGHT, buff=1)

        self.arrow1 = Arrow().shift(DOWN*2).to_edge(LEFT, buff=1)
        self.arrow2 = Arrow().shift(DOWN*2).to_edge(RIGHT, buff=1)

        self.do_animation("1. lag_ratio=0", 0)
        self.do_animation("2. lag_ratio=0.5", 0.5)
        self.do_animation("3. lag_ratio=1", 1)

    def do_animation(self, name, ratio):
        text = Text(name, stroke_width=0, color=YELLOW, size=0.4).to_corner(UL, buff=0.5)

        self.add(text, self.t1, self.shape1, self.arrow1)
        self.wait(2)

        self.play(
            AnimationGroup(
                TransformFromCopy(self.t1, self.t2, run_time=2),
                TransformFromCopy(self.shape1, self.shape2, run_time=2),
                TransformFromCopy(self.arrow1, self.arrow2, run_time=2),
                lag_ratio=ratio,
            )
        )

        self.wait(0.5)
        self.remove(text, self.t1, self.shape1, self.arrow1)

 

 

 

---

Succession Class

    def succession(self):
        text = Text("Succession", stroke_width=0, color=YELLOW, size=0.4).to_corner(UL, buff=0.5)

        t1 = TextMobject("Hello").shift(UP * 2).to_edge(LEFT, buff=1)
        t2 = TextMobject("Wordld").shift(UP * 2).to_edge(RIGHT, buff=1)

        shape1 = Circle().to_edge(LEFT, buff=1)
        shape2 = Square().to_edge(RIGHT, buff=1)

        arrow1 = Arrow().shift(DOWN * 2).to_edge(LEFT, buff=1)
        arrow2 = Arrow().shift(DOWN * 2).to_edge(RIGHT, buff=1)

        self.add(text, t1, shape1, arrow1)
        self.wait(2)

        self.play(
            Succession(
                Transform(t1,t2),
                Transform(shape1, shape2),
                Transform(arrow1, arrow2),
            )
        )

 

 

---

LaggedStart Class

    def lagged_start(self):
        text = Text("LaggedStart", stroke_width=0, color=YELLOW, size=0.4).to_corner(UL, buff=0.5)

        t1 = TextMobject("Hello").shift(UP * 2).to_edge(LEFT, buff=1)
        t2 = TextMobject("Wordld").shift(UP * 2).to_edge(RIGHT, buff=1)

        shape1 = Circle().to_edge(LEFT, buff=1)
        shape2 = Square().to_edge(RIGHT, buff=1)

        arrow1 = Arrow().shift(DOWN * 2).to_edge(LEFT, buff=1)
        arrow2 = Arrow().shift(DOWN * 2).to_edge(RIGHT, buff=1)

        self.add(text, t1, shape1, arrow1)
        self.wait(2)

        self.play(
            LaggedStart(
                Transform(t1, t2),
                Transform(shape1, shape2),
                Transform(arrow1, arrow2),
                lag_ratio=0.3,
            )
        )

 

 

---

LaggedStartMap Class

    def lagged_start_map(self):
        text = VGroup(
            TextMobject("Monday"),
            TextMobject("Tuesday"),
            TextMobject("Wednesday"),
            TextMobject("Thursday"),
            TextMobject("Friday"),
        ).arrange(DOWN)

        self.play(
            LaggedStartMap(FadeInFrom, text, lambda m: (m, LEFT), lag_ratio=0.2),
            run_time=10,
        )
        self.wait()