Way easier to read compared to the mental gymnastics of the original
"offset + range" form, especially since we can also abstract away
subpixels with another layer of wrapper functions. Also brings a bunch
of new speed/angle symmetries to light.
Part of P0190, funded by nrook.
The fanciness of expressing these as signed constants probably hurted
the understandability of the code more than it helped.
Part of P0189, funded by Arandui and Lmocinemod.
nmlgc