Postby TheOtherSupport@KMI » Thu Sep 13, 2018 8:17 am
The radius is the distance from the center, and does not take into account whether you are going up and down (Y axis) or left to right (X axis).
You are not constrained to the Y axis, you are constrained to radius. We have no current plans to add X/Y axis sources into the firmware, but I can certainly add it as a feature request.