Parametric Line Drawings

I am still on the dazed and confused side of using this program still as i am really not a fan of visual programming. I looked into more tutorials around the internet and fiddled around with a few that had different functions, this did help me understand the program a bit better but i need to to more work with it before i know what the hell i'm doing.

I found this script and generated these four drawings by fiddling around with the base code provided by this tutorial on grid pinching.