My question is basically an extension of one asked last year: Drive shape key based on relative camera orientation?
They received some great answers but the solutions seem to be only for one shape key and camera angle.
I have a NPR Toon model I've been working on and I would love to be able to associate a camera angle with a specific shape key (like in the aforementioned post), but for multiple angles and shape keys.
I'm aware of a solution using Animation Nodes (https://youtu.be/t9rVg4L8nBU), but I was hoping for a more elegant solution using drivers or python (unfortunately my knowledge of python is little).
This is what I'm hoping to learn how to achieve: https://mobile.twitter.com/MuRo_CG/status/1206902886090735616?s=20