Unsung Story - Developer Blog #3: Animation

The third developer blog for Unsung Story is focussing on animations, which includes some animated gifs.

The first thing an animator needs to begin animating is a fully “rigged” and “skinned” 3D model. Most of you are probably familiar with the idea of a 3D model, but the ideas of “skinning” and “rigging” are a bit more esoteric.

“Rigging” is essentially the process of creating a skeleton that sits inside the 3D model, which an animator can then use to control motion. Each skeleton is comprised of several controllers that the animator can use to quickly deform and move different parts of the model, which is obviously useful! 

“Skinning” refers to the act of assigning the amount of influence that each of these controllers have over the model and each other. In the real world, moving a part of yourself moves everything connected to it to some degree, which is what skinning emulates. For example, when moving the arm of a model, we want the shoulder to influence the whole arm, the elbow to influence the forearm and hand and the wrist to only influence the hand.