Some time ago as requested by an artist, I have implemented a subdivision type useful for low polygon models or hard edges geometry. At that time I was in Cuba and by some reason I can’t remember seems that code wont get into the main trunk. Since I have left all my previous work “behind” I had to re-implement again. but like a painter, the second time you do your artwork it will be different, now I have more experience so the rewrote feature is way better than the lost functionality :) Hope you like it.