Grasshopper

algorithmic modeling for Rhino

Fertility Meshmachine ShortestPath ExoWireframe

1) Model remeshed with Meshmachine
2) Shortest Walk on vertices of the mesh
3) ExosWireframe applied on paths

Original 'fertility' model courtesy of the AIM@SHAPE Shape Repository

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Comment by Laurent DELRIEU on November 6, 2014 at 1:45pm

Thanks for the links, I will look to them.

I already looked to some venations examples and to my point of view it is important to have a direction of growth. So I think geodesic could be useful, growth will be perpendicular to iso geodesic distances. Here is an exemple with horse, I put points on horse sabots (main veins will begin here)

Comment by Daniel González Abalde on November 6, 2014 at 1:19pm
Comment by David Stasiuk on November 6, 2014 at 1:19pm

Ah, cool. Makes sense. The Nervous stuff (I am pretty sure) is derived from the algorithms outlined here: http://algorithmicbotany.org/papers/venation.sig2005.pdf It's a fantastic paper, and totally possible to implement. A number of folks here have done so, I believe.

Comment by Daniel González Abalde on November 6, 2014 at 1:16pm

Eii Laurent,
some time ago I tried to make the venation algorithm as Nervous in Gh, but this is done with the CGAL library. I am a novice in scripting but have this slope. Maybe to you this be a help ...

Also, very good renders.

Comment by Laurent DELRIEU on November 6, 2014 at 12:53pm

It is a shortest walk between a departure point underneath the mesh and all the vertices of the mesh. Path are the edges of triangles.But I want to make something similar to Nervous, but at the moment I try to make some geodesic  with one or more sources. I am here now but it is far from optimized. 

Comment by David Stasiuk on November 6, 2014 at 3:53am

Looks great! Although it looks more like a minimum spanning tree to me?

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