Kevin O'Connor 9f65ae72c3 delta: Rework boundary checks
Calculate and store the maximum xy2 value for the given z level each
time the head moves to a new z level.  This simplifies the boundary
check for common XY moves.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2017-02-13 17:51:13 -05:00
..
2017-02-13 17:51:13 -05:00