I would like to shed some light of the amazing work of Andrea Pessino on modulator. The crate is, I cite,
A trait for abstracted, decoupled modulation sources
I highly suggest to take the time to watch the accompanying video in the README. He also made an app to explore the possibilities offered by the crate.
High-quality work in my humble opinion! Hope you find it as mind-blowing as me! Kudos to him!
Wow, the first few spoken lines in the video ... How serious must one be about animating a triangle in a pentagon? That's one way to grab your audience's attention right away. LOL I love it!
The crate itself might be useful for one of my projects. The video makes it seem like a combination of the drawing primitives of agg with tween primitives and modulators. Looks great!