Sorry you did not understand the problem. Maybe my presentation is not correct. My main goal is from Figure A to create C. There may be many different ways. I just need 1 idea.
Foo.lisp has performed very well. But it's not perfect with objects like Polyline, Arc, Spline .... Because it's beyond the scope of my profile presentation. I need something like the image below.
Thank you very much for your help.