Bresenham circle algorithm

[christophebraillon]

Hi,

I started using GRBL a few days ago for a home made CNC, previously I was developping my own code for controlling the CNC, mainly for fun and as a learning experience. I found GRBL to be much more complete (and generic), however, there are a few features in the code I developped that I think could benefit to the community. For example "exact" circle arc generation, using the Bresenham algorithm for circles see original article.

I haven't looked deeply in the code and I would appreciate some guidance about the right way to implement this kind of feature. I think I should start with stepper.c. Anyway if someone is interested let me know

Christophe

[terjeio]

I think I should start with stepper.c.

FYI stepper.c (and planner.c) can only process linear moves. Arcs (and circles) are converted to short line segments here.
Passing arcs through the planner to stepper.c may not be an easy task...