algorithmic modeling for Rhino

Weaverbird - mesh topologies in Grasshopper

Topologies in Grasshopper

Weaverbird is a plug-in for topological transformations in Rhino 4.0 and Grasshopper 0.8. It helps smoothing, modifying and preparing meshes for rapid manufacturing technologies from within Grasshopper.

Contains these commands:

  • Catmull-Clark smoothing
  • Split mesh into Quads
  • Loop smoothing
  • Split mesh with inner face
  • Sierpinsky Triangles subdivision
  • Frame
  • Sierpinsky Carpet
  • Window
  • more...

You can download the latest version from

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Comments are closed for this blog post

Comment by Zach Hines on June 29, 2010 at 5:09pm
That totally fixed my problem, thanks Giulio!
Comment by Giulio Piacentino on June 29, 2010 at 4:15pm
Hi Arthur, there is a problem in the Grasshopper installer if you go back from 0.7 to 0.6. The rh_common folder is not deleted and Grasshopper tries to load it. If you are currently using Gh 0.6, please manually delete the folder rh_common from "C:\Program Files\Rhinoceros 4.0\Plugins\Grasshopper". The error should disappear. Please let me know if this solves it,
- Giulio
Comment by Arthur Mamou-Mani on June 28, 2010 at 11:24am
Hi Giulio,
I get a similar problem.
Please attached the image/file

Comment by Giulio Piacentino on April 12, 2010 at 9:58am
Hi Se, I see! Did you install the component to the default locations?
If not, could you please try uninstalling it and re-installing?
Thanks, I'll pm you, Giulio
Comment by SE HOON JANG on April 12, 2010 at 9:44am
Thanks Giulio,
It has a little trouble with
maybe load WeaverBird problem...

Comment by Daniel Piker on March 30, 2010 at 9:17am
Comment by Arthur Mamou-Mani on March 30, 2010 at 8:52am
Thanks Giulio,
I am trying to reproduce a giant LillyPad using weaverbird but since it s a complicated solid i think it's harder to compute. Would you have any ideas as to how i could subdivide such a polysurface?

Comment by Giulio Piacentino on March 29, 2010 at 6:09am
Hi Arthur, Loop subdivision creates that special vertex (it's how it works) when four edges meet at the same vertex. Catmull-Clark subdivision works better for quad meshes (like a box). There are other subdivision schemes, like Sqrt(3), that do not have this problem, but have other limitations. Hope it helps, - Giulio
Comment by Arthur Mamou-Mani on March 29, 2010 at 5:55am
Hi Giulio,
I was trying to make subdivide a boxy mesh with weaverbird and i always get a strange edge (image below) which i wish i wouldn't have.
Would there be a special tool i could use to subdivide with no edges ?
many thanks,

Comment by j00k on March 25, 2010 at 4:46pm
cool! should have looked first, thanks for the quick reply cheers Giulio ;)




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