Manim文档及源码笔记-CE教程BE01英文笔记速览版

Manim文档及源码笔记-CE教程BE01

An Invitaion to Mathematical Animations WITH EASE in Python

前言

这次筛选到了Behackl博士的教程，逐步拆解，更为细腻~
参考视频在此【或请自行搜索上面的英文标题】；
本页中文版传送门【建设中】；

更新【new】：

• 8月23日
• • 文首标注了“前言”与“正文”；
• • 本系列暂告段落，升级了系列目录，放到了文尾；
• 后续更新备忘：文中“【建设中】”的内容；欢迎朋友们催更~

首先，国际通则：Just GET STARTED~ JUST DO IT~

然后，让我们行动起来~
注：
1、代码实践过程根据运行环境及笔记需要略有改动；
2、经过实践理解，加入了一些自己的注释；
3、常见问题及大概率解决方案：

• Python相关：注意缩进、冒号，中英文字符、大小写；
• Manim相关：安装与运行环境；
• Coding相关：检查拼写；

正文

Part 1 Things to know before you start

History is complicated: different versions!

CAUTION:
There are several incompatible versions of Manim floatong around.

• Manim: the community maintained version
• 3b1b/manim- manimgl- manimlib: the original version,
  devdloped+ maintained mainly by Grant “3b1b” Sanderson

How do I install Manim?

• Two ingredients: FFmpeg and Python( 3.7+ )
• Optional( but useful) : a LaTeX distribution like MiKTeX/TeXLive
• Caution: most installation videos are outdated!
  Go to docs.manim.community and follow installation instructions for your OS!

Help and other resources?

• All community resources: www.manim.community
• Places to get help:
• • Manim Discord server: manim.community/discord
• • Reddit: reddit.com/r/manim
• • GitHub discussions: github.com/ManimCommunity/manim
• Make sure to code + output when asking a question!
• Interactive worksheet: see description!

Part 2 Basic anatomy of Manimations

Learning by Doing!

注：
1、代码实践过程根据运行环境及笔记需要略有改动；
2、经过实践理解，加入了一些自己的注释；
3、常见问题及大概率解决方案：

• Python相关：注意缩进、冒号，中英文字符、大小写；
• Manim相关：安装与运行环境；
• Coding相关：检查拼写；

代码直击前-开头别忘了：

from manim import *
config.media_width="60%"

代码直击1 FirstExample

%%manim -v WARNING -qm FirstExample

class FirstExample(Scene):
    def construct(self):
        blue_circle=Circle(color=BLUE,fill_opacity=0.5)
        green_square=Square(color=GREEN,fill_opacity=0.8)
        green_square.next_to(blue_circle,RIGHT)
        self.add(blue_circle,green_square)

注：ManimCE自动生成图片文件夹；

用VSCode右键这里，很方便打开相应文件夹；

Generating Output

…the “normal” way:

• Write code in file.py
• Then run manim -qm -p file.py FirstExample in terminal

…with Jupyter

• Import manim, put code for scene in a cell
• %%manim -qm FirstExample at beginning of cell, then run it

Scene, Mobjects, globla constants

• Scene: animation canvas
• Mobjects: Manim objects- Circle, Square, …
• Mobjects have properties- color, fill_opacity, …
• Some global constants: colors( BLUE, GREEN, …) and directions(UP, DOWN, RIGHT, …)

The reference manual at docs.manim.community lists all available classes and functions!

代码直击2 SecondExample

%%manim -v WARNING -qm SecondExample
class SecondExample(Scene):
    def construct(self):
        ax=Axes(x_range=(-3,3),y_range=(-3,3))
        curve=ax.plot(lambda x: (x+2)*x*(x-2)/2,color=RED)
        self.add(ax, curve)

代码直击3 SecondExample2

%%manim -v WARNING -qm SecondExample2
class SecondExample2(Scene):
    def construct(self):