I am struggling, the only resource I found is this.  I have not dealt with the code yet, but concepts on how to deal with it. So the thought I came up with is to create a circle via PIXI.Graphics and make this a mask on another black transparent graphics object. The thing is, I wanted my Circle mask to look like a degrading pie chart overtime. I need to be it like this for some reason not like the one on the link. Basically, what I am asking is this, how can I make a circle, to fan left and t