manim-第一个程序

clone仓库

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git clone https://github.com/3b1b/manim.git

运行demo

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cd manim
manimgl example_scenes.py OpeningManimExample

编写一个

• 在manim目录下新建python文件demo.py，代码如下

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  from manimlib.imports import * class SquareToCircle(Scene): def construct(self): circle = Circle() circle.set_fill(BLUE, opacity=0.5) circle.set_stroke(BLUE_A, width=4) square = Square() self.play(ShowCreation(square)) self.play(ReplacementTransform(square, circle)) self.wait() exit()

• 运行程序，执行manim demo.py SquareToCircle，就会展示如下动画
  

  • 执行manim demo.py SquareToCircle -wm可以在videos目录下生成视屏文件

代码解析

• 定义场景类：

  • 需要继承自场景类Scene
  • override函数：construct

  1 2	class SquareToCircle(Scene): def construct(self):

• 场景元素添加并设置：

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  circle = Circle() circle.set_fill(BLUE, opacity=0.5) circle.set_stroke(BLUE_A, width=4) square = Square()

• 动画定义及播放：

  1 2	self.play(ShowCreation(square)) self.play(ReplacementTransform(square, circle))

  以上。