[ericseppanen]

Bresenham's algorithm is very useful when building software that uses stepper motors to follow a particular path (e.g. robotics, plotters, 3d printers, CNC machine). It's especially nice if you're trying to use a wimpy CPU like an Arduino.

Note that this (and not raster display) was actually the problem Bresenham was describing in the 1965 paper.

Amusingly, the stock firmware for the Makeblock XY Plotter kit did not use Bresenham's algorithm-- and has horrible artifacts due to crazy rounding errors. Reimplementing Bresenham on a plotter does feel a bit like a trip to the past.