Nesting on any object/ shape/ surfaces/ geometry

hello everyone,

Actually, I am trying to make bird nesting on single geometry. Here below I attached a pic of my GH script, please help me out about how I can make a nest on a cube with parallel nesting to it surfaces. It getting clashed inside my geometry surface. I want to nest actually on my geometry surfaces.


29TH APRIL 2018.gh (14.8 KB)

Thanks!