Yeah - I think it'd take some serious chops to construct this from scratch (note: it wasn't me! author: twitter.com/teachwithcode). But I've been having a blast deconstructing the equations.

Here's a fun intermediate step (circles instead of hearts), with a few of the numbers parametrized as sliders:

https://www.desmos.com/calculator/irg4qa2s4h

[disclaimer: I work at desmos]