https://www.youtube.com/watch?v=twUz99ek5do&list=WL&index=5 There is a process from 1:51, where the guy start making polygons around the bodyparts. I think this is this part is where (with later transformations) you can make a single draw like a 3D animation (with transforming the triangles). What is the name of the process, and is this effect available in other animation softver? I'm thinking about mostly maya, spriter or unity.Ty 
Spine. What is the name of the process?
3d;animation;polygon