C++ Mimmo library, how to learn algorithm?

Question

C++ / C#

There is a Mimmo library that implements mesh morphing.

Sources: https://optimad.github.io/mimmo/

Actually, I'm new to this topic.
Collected library, looked at examples.

My task is to disassemble and test the algorithm of this mesh processing library.
To be honest, I have no idea how to do this.

Please advise the literature on the topic of mesh processing algorithms and (if possible) tell me where to start studying the algorithm of this library.