That would pose issues when iterating over a range that crosses the X/Y axis, you'd need special case for this. Or you might say that -0 +1 = 0 but I think that

That would pose issues when iterating over a range that crosses the X/Y axis, you'd need special case for this. Or you might say that -0 +1 = 0 but I think that would probably break some fundamental properties of the ring of integers.