Just click the green flag and watch, preferably on turbo mode. I kept screen refresh on just so this could be watched instead of just rendering, and added a color change to make it clear how far within recursion the program is.
https://www.desmos.com/calculator/v0hnf0srm3 Just because it was a failed /transparent/ triangle filler, that doesn't mean it doesn't produce what, in my opinion, are some beautiful patterns, and have a relaxing filling algorithm to watch. I'm proud that I actually got an algorithm as weird as this one working as well. ...I guess I'll go over how this works. First it just draws the incircle of the triangle, then renders each corner as the main shape, which is a triangle with a little bit of it removes from the circle.