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代码输入动画效果

Project description

Manim Code Anim

代码输入动画效果,基于 Manim 库实现的代码块动画效果。

项目简介

manim-code-anim 是一个基于 Manim 的扩展库,用于在 Manim 动画中创建带有语法高亮的代码块动画。该库基于 CasualCodersProjects/manim-code-blocks 库进行修改和扩展。

主要功能

  • 支持多种编程语言的语法高亮
  • 代码逐字显示动画效果
  • 支持中文显示
  • 可自定义字体和主题

安装

依赖项

  • Python 3.12+
  • Manim 0.20.0+
  • tokenize-all-code 1.0.18+

安装方法

方法一:使用 pip 安装(推荐)

# 直接从 PyPI 安装
pip install manim-code-anim

方法二:从源码安装

# 克隆仓库
git clone https://github.com/yourusername/manim-code-anim.git
cd manim-code-anim

# 安装依赖
pip install -e .

项目已发布到 PyPI,可以直接使用 pip 安装。

使用示例

基本使用

from manim import *
from manim_code_anim.code_anim import CodeAnim, Python

class CodeAnimation(Scene):
    def construct(self):
        # 创建一个Python代码块
        code = CodeAnim(
            text='print("Hello World!")',
            language=Python
        )

        # 播放创建动画
        self.play(*code.create())
        self.wait(2)

        # 播放销毁动画
        self.play(*code.uncreate())
        self.wait()

if __name__ == "__main__":
    scene = CodeAnimation()
    scene.render()

多行代码

from manim import *
from manim_code_anim.code_anim import CodeAnim, Python

class MultiLineCode(Scene):
    def construct(self):
        python_code = '''
def fibonacci(n):
    if n <= 1:
        return n
    return fibonacci(n-1) + fibonacci(n-2)

print(fibonacci(10))
'''

        code = CodeAnim(
            text=python_code,
            language=Python
        )

        self.play(*code.create())
        self.wait(3)
        self.play(*code.uncreate())
        self.wait()

支持中文

from manim import *
from manim_code_anim.code_anim import CodeAnim, Python

class ChineseCode(Scene):
    def construct(self):
        code = CodeAnim(
            text='''
# 这是中文注释
print("你好,世界!")  # 中文注释
''',
            language=Python
        )

        self.play(*code.create())
        self.wait(2)
        self.play(*code.uncreate())
        self.wait()

自定义字体

from manim import *
from manim_code_anim.code_anim import CodeAnim, Python

class CustomFontCode(Scene):
    def construct(self):
        code = CodeAnim(
            text='print("Hello, 世界!")',
            language=Python,
            font="Courier New",        # 英文代码字体
            chinese_font="SimHei"      # 中文字体
        )

        self.play(*code.create())
        self.wait(2)
        self.play(*code.uncreate())
        self.wait()

高亮多行代码

from manim import *
from manim_code_anim.code_anim import CodeAnim, Python

class HighlightLinesCode(Scene):
    def construct(self):
        python_code = '''
def fibonacci(n):
    if n <= 1:
        return n
    return fibonacci(n-1) + fibonacci(n-2)

print(fibonacci(10))
'''

        code = CodeAnim(
            text=python_code,
            language=Python
        )

        # 播放创建动画
        self.play(*code.create())
        self.wait(1)

        highlight1 = code.highlight_lines(BLUE, [1])
        self.play(Create(highlight1))
        self.wait(1)

        # 高亮第2-4行(递归逻辑) - 用黄色,同时移除之前的蓝色高亮
        highlight2 = code.highlight_lines(YELLOW, [2, 3, 4])
        self.play(FadeOut(highlight1), Create(highlight2))
        self.wait(1)

        # 高亮第6行(注释)和第7-8行(测试代码)- 用绿色
        highlight3 = code.highlight_lines(GREEN, [6, 7, 8])
        self.play(FadeOut(highlight2), Create(highlight3))
        self.wait(1)

        self.play(*code.uncreate())
        self.wait()

支持的编程语言

  • C
  • C++
  • C#
  • Fortran
  • Go
  • Haskell
  • Java
  • JavaScript
  • Lua
  • Python
  • Ruby
  • Rust
  • SQL
  • TypeScript

API 参考

CodeAnim 类

CodeAnim(
    text: str,  # 要显示的代码文本
    language: ProgrammingLanguage | None = None,  # 编程语言
    theme: Theme = OneDark,  # 语法高亮主题
    font: str = "FiraCode Nerd Font Mono",  # 英文代码字体
    chinese_font: str = "Microsoft YaHei",  # 中文字体
    **kwargs: object  # 传递给VGroup的其他参数
)

方法

  • create(**kwargs): 返回创建代码块的动画元组
  • uncreate(**kwargs): 返回销毁代码块的动画元组

基于的库

本项目基于 CasualCodersProjects/manim-code-blocks 库,进行了以下修改:

  • 添加了中文支持
  • 优化了字体处理
  • 修复了一些bug
  • 完善了文档

许可证

MIT License

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