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manim-eng is a plugin for the Manim Community animation engine that introduces symbols and utilities for drawing engineering diagrams. Currently this only includes circuits, but the goal is to extend this to structures in the future as well.

Why make another circuit library?

Quite simply, because the other options available just don't cut it for me. The manim-circuit plugin, which was released during early development of this plugin, comes closer to what I want, but still isn't quite there. My goal can be summed up as 'manim-eng should be to ManimCE what CircuiTikZ is to LaTeX'. This means:

• Easy to configure and automatically placed labels, annotations, and current and voltage indications.
• Automatic, sensible animations for when these labels are introduced, removed, or changed.
• Automatic component connections.
• Ability to specify component types (i.e. European or American), with as much or as little granularity as you wish.

Those who know CircuiTikZ will know that it can't actually do all of the above, but why not make something better than your inspiration? On top of these features, I wanted a clean, intuitive, Pythonic interface to the library. No available option that I could find had all of this. Making my own was also an excellent way to get familiar with Manim, and a fun project.

Getting started

Head over to the documentation to get started with your first circuit diagrams!

Development

Environment setup

manim-eng, like Manim itself, uses uv as a package manager and build system. You will need uv installed before proceeding. First, clone the repository with Git:

git clone https://github.com/overegneered/manim-eng.git

Then install dependencies with uv:

uv sync --extra dev

Finally, install the pre-commit hooks:

uv run pre-commit install

Testing

manim-eng uses pytest as a testing framework. To run the test suite, you can use

uv run pytest

though using an IDE integration, such as PyCharm's pytest runner, may be easier!

Licencing and citation

If you use this project in your work, I ask that you cite it using the information contained in the CITATION.cff file. The easiest way to do this is to go to the repository page on GitHub and click on 'Cite this repository'. For more info on CITATION.cff files, check out this website.

This project is provided under the terms of the MIT licence.