Hi @ronenosity ! 
welcome to the forum!
Inspired by your question I added a new reply to the thread about pen plotters:
About your question about PGS… That library seems to provide so many tools! I think OPENRNDR + ORX provide many of the same algorithms.
I would start by looking into the guide. Then there are OPENRNDR demos, demos in the ORX repository, and I think there are ORXes to keep anyone busy for a very long time orx-shapes, orx-triangulation, orx-turtle, orx-marching-squares, orx-jvm/orx-boofcv…
If you are looking for a specific algorithm and can’t find it I can try to help.
Feel free to share images or links to your plots. Would be great to see what you create!