On: Faces.js, a JavaScript library for generating vect...

[jlturner]

This is pretty common in 3D work. Blender has a feature called “blend shapes” that implements a similar interface, and is commonly used for complex facial animation and general model parameterization.

[Tijdreiziger → jlturner]

Duolingo did a talk at their Duocon conference about how they use parametrization to animate the characters in their app.

https://www.youtube.com/watch?v=fgOqvyPif3g

(no affiliation)