Shortest Walk Tapered Branching Script

This is the script of Daniel Abalde's Peacock tapered offset post, here:

http://www.grasshopper3d.com/photo/the-variable-offset-component-sp...

Replies to This Discussion

Permalink Reply by Nik Willmore on January 29, 2016 at 10:36pm

Here is a marching cubes Cocoon plugin version:

Alas, there's only control over metaline strength over its length, not actual radius, so the effect is a bit limited in tapering.

Cocoon: http://www.bespokegeometry.com/2015/07/22/cocoon/

Attachments:

Shortest_Walk_Tapered_Cocoon_B.gh, 20 KB

Permalink Reply by Laurent DELRIEU on January 31, 2016 at 5:34am

In 2D using a tool to analyse topology of lines network and aslo calculating radius of branches. The root is the point closest to a defined point. The root radius is always given a value of 1. The power is used to calculate radius of branch see §3.5 http://algorithmicbotany.org/papers/venation.sig2005.pdf

r^n parent = r^n child1 +r^n child2 (n=3)

The tool for generation mesh is mine and is also here :

http://www.grasshopper3d.com/group/kangaroo/forum/topics/envelop-of...

Attachments:

Shortest_Walk_Tapered_envelop_curves.gh, 49 KB

Permalink Reply by Nik Willmore on January 29, 2016 at 11:04pm

A 3D version:

Attachments:

Shortest_Walk_Tapered_Cocoon_C_3D_VERSION.gh, 23 KB

Permalink Reply by Shridhar Mamidalaa on January 30, 2016 at 12:57am

works well..!!! thanks :)

Permalink Reply by Nik Willmore on January 30, 2016 at 4:08pm

Control point curves, eh? I have to flatten the Cocoon input for them to merge:

The swerving of the overlapping shortest path curves from the single core origin point to each outermost point affords more tapering thickness!

I'm thinking of overlapping several starting point versions with the same other points, to achieve cross-linked 3D trusses.

Attachments:

Shortest_Walk_Tapered_Cocoon_D_CONTROL_POINT_CURVES.gh, 22 KB

Permalink Reply by Kellan Shanahan on February 1, 2016 at 2:55pm

Looks like you need to water those curves!

Permalink Reply by Hsin YEN WU on May 16, 2018 at 10:16am

Moderator you can not download,

Permalink Reply by Nik Willmore on January 30, 2016 at 4:22am

Permalink Reply by Laurent DELRIEU on January 31, 2016 at 6:15am

Here is a script to calculate radius of branch considering that all end of branch have the same size and parents branch radius is calculated depending on a power law.

Attachments:

Shortest_Walk_Tapered_3D_pipes.gh, 109 KB

Permalink Reply by Laurent DELRIEU on January 31, 2016 at 10:16am

Permalink Reply by mark zirinsky on January 31, 2016 at 6:20pm

Very cool. Thank you for posting this.

I am now puzzling over how to do an in-fill of the smaller veins that one would find in a leaf, which brings us back to an essentially 2-d discussion. This algorithm works well for the larger veins; would it be reasonable to use either a single, weighted veroni, or perhaps a dual population Veroni, for the smaller veins? or, third option, use your same algorithm, but starting with small radii, originating at the end nodes of the large veins?

Permalink Reply by Sean Holden on November 27, 2016 at 3:15pm

Hi Laurent,

I would really like to be able to model a tree structure like this and understand the process of the scripting for it. Would you be able to point me in the direction of any resources that would help me to do this?

Thank you very much for your help,

Sean