Support for writing / rendering math equations

It would be nice to support math equations embedded in text. Imagine the cool diagrams you can draw with labels using this support to illustrate geometry and physics problems.

One way to implement this would be to integrate LaTeX math mode in text. For example, $d = \sqrt{x^2 + y^2}$ would show up as .

Potential challenges:

1. Can this be done in a lightweight manner?
2. How difficult would it be to support artistic rendering in this mode?

[baptiste]

@DanielJGeiger 's PR works wonderfully; I’ve just extracted all equations from a chapter of lecture slides and imported them – worked a charm.

Unlike SVG images, these can be edited directly in place. I’m planning to create a “library” of equations for each chapter and give that to the students, with the suggestion that they make their own whiteboard “mindmap” organising the course content.

[baptiste]

In case anyone else is interested, here’s the workflow I used:

1. run de-macro on the original latex file, to replace all custom commands (\newcommand and \def) with their definition
2. run pandoc with a custom lua filter to extract all equations from the latex file
3. wrap each equation into a JSON object that can be imported in Excalidraw (specifically, the PR supporting Mathjax)

The bounding boxes aren’t correct until one double-clicks an equation, but that’s a trivial enough step to do manually