How to make this figure?

 From:  Frenchy Pilou (PILOU)
5935.3 In reply to 5935.1 
Why your object is out of the grid at the end of the space?
We must recentered it at each time, so time consumming! :)

I redraw one curve with "rebuild" for have less points

Seems Networks works fine :)


EDITED: 3 Jun 2013 by PILOU