Sprite with masks optimization

[jkm]

https://gyazo.com/4a44909a40952ac6f5182d328f55d754

I've spent more time than I care to admit figuring it all out. I'm calculating a convex hull around a sprite and then slicing it up into matterjs driven little orc pieces.

I'm not very happy with one thing yet. Each of these pieces is a separate Sprite and it has it's own Graphics object as a mask. I feel that if I were to have a couple of these going at the same time rendering could get expensive. 
Teach me to do better I should be learning react or something to get a dev job, but here I am cutting up orcs.

[ivan.popelyshev]

new PIXI.Texture(oldTexture, new PIXI.Rectangle(x,y,w,h));