I have a Vytek 4x8 table router which uses 3D HPGL I downloaded the Vecric trials and carved several samples after cobbling together a pp file for my machine. I got the basic jog speed, carve speed functions working, and the point to point stuff no problem, but when it came to arc support my HPGL control board accepts a point center degrees command:
PAx,y,z; <beginning of the arc (or end of last)
AAxc,yc,degrees; <arc center and +ccw or -cw degrees
to carve the arc but none of the examples seem to introduce the degrees variable. My math is a bit rusty but I'm thinking trig functions to calculate the degress may not be available in a .pp specifiable way.
Anyone have any suggestions?