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Manim 4 : Transformations

4.1 Transformations

class TransformationText1V1(Scene):
    def construct(self):
        texto1 = TextMobject("First text")
        texto2 = TextMobject("Second text")
        self.play(Write(texto1))
        self.wait()
        self.play(Transform(texto1,texto2))
        self.wait()
  • Transform(M1,M2)
    • M1 transfrom from M1 to M2, M2 is unchanged
      • the ojbect that we see on the screen is M1 all the times
    self.play(Transform(M1,M2))
self.wait()
self.play(Transform(M1,M3))
self.wait()
self.play( FadeOut(M1) )
  • ReplacementTransform(M1,M2)
    • M1 transforms from M1 to M2, after transformation, M1 is hidden it has been replace by M2.
      • you normally need .copy() when u are using ReplaceTransform
    self.play(ReplacementTransform(M1,M2))
self.wait()
self.play(ReplacementTransform(M2,M3))
self.wait()
self.play( FadeOut(M3) )

Change Property Animation

class ChangeTextColorAnimation(Scene):
    def construct(self):
        text = TextMobject("Text")
        text.scale(3)
        self.play(Write(text))
        self.wait()
        self.play(
                text.set_color, YELLOW,
                run_time=2
            )
        self.wait()

class ChangeSizeAnimation(Scene):
    def construct(self):
        text = TextMobject("Text")
        text.scale(2)
        self.play(Write(text))
        self.wait()
        self.play(
                text.scale, 3,
                run_time=2
            )
        self.wait()

class ChangeColorAndSizeAnimation(Scene):
    def construct(self):
        text = TextMobject("Text")
        text.scale(2)
        text.shift(LEFT*2)
        self.play(Write(text))
        self.wait()
        self.play(
                text.shift, RIGHT*2,
                text.scale, 2,
                text.set_color, RED,
                run_time=2,
            )
        self.wait()

class ChangeColorAndSizeAnimation2(Scene):
    def construct(self):
        text = TextMobject("Text")
        text.scale(2)
        text.shift(LEFT*2)
        self.play(Write(text))
        self.wait()

        text.generate_target()
        text.target.shift( RIGHT*2 )
        text.target.scale(2)
        text.target.set_color(RED)
        self.play(
                MoveToTarget(text),
                run_time=2,
            )
        self.wait()