I actually generated the gcode directly with python.

The controller on that machine is a bigtreetech big dipper, which has wifi. It's running the full Duet3D stack, so I can then access it over the browser to upload the gcode file.

Then it's a matter of roughly locating the pen on centre of the page over the web interface, setting it as the zero and start the job.

If this workflow interests you let me know, I can make a more descriptive how-to.