@neauoire your formula only refers to one point (x,y) ?
@phoebos my second point is the screen center https://git.sr.ht/~rabbits/decadv/tree/main/item/tcc/day5.tal#L35
@phoebos my second point is the screen center https://git.sr.ht/~rabbits/decadv/tree/main/item/tcc/day5.tal#L35