Growth_BW

The result of a shortest-walk structure following a post of Laurent Delrieu mapped onto a sphere. My original rendered idea did look cheesy ;-) so in the end I used the Alpha channel of the top view instead of the actual rendering (using Thea Render for Rhino).

This is the initial post that got me going:
http://www.grasshopper3d.com/forum/topics/envelop-of-lines-network-mesh-and-funicular-structures?groupUrl=kangaroo&groupId=2985220%3AGroup%3A120977&id=2985220%3ATopic%3A1434822&page=2

Thanks to everybody here for their inspiration!