Skeletal mesh

In response to this discussion:

http://www.grasshopper3d.com/photo/mesh

I am posting my definition for generating an open foam mesh.

(I didn't post back at the time because there were some troubles with weaverbird back then and I was having to use some ugly workarounds, but now that is all fixed)

To sum up the approach -

take a random cloud of points

generate the 3d voronoi

scale the edges of the cells towards their centres, and also towards the centres of the faces.

connect these 2 sets of scaled edges with mesh quads and join

cull some of the outer faces

subdivide and smooth with weaverbird

(In the video there were some other variations on the smoothing/relaxation, both of the initial point positions and the final mesh, using hoopsnake and/or kangaroo)

Attachments:

skeletal_mesh.gh, 10 KB

Replies to This Discussion

Permalink Reply by Nick Tyrer on March 5, 2013 at 10:16am

Alternatively try this definition. I've labeled the section that closes the mesh

Attachments:

APTX Skeleton.gh, 19 KB

Permalink Reply by APTX4869 on March 5, 2013 at 3:02pm

That's awesome. Thank you so much!

Permalink Reply by Kyle on October 19, 2016 at 7:27am

Hi Ben,

I know this is literally 4 years later, but I'm trying to use these scripts and I'm wondering how you were able to get it to be rigidly defined by a cube. When I plug my geometry into the definition I get a skeletal mesh that is only bounded by the geometry not directly related to the defining edges of the cube. That might be a bad description, but basically how did you get the sharp edges of your cube in your mesh?

Thanks

Permalink Reply by Emanuel Schuster on January 30, 2014 at 7:07am

Hi there.. How can i connect four end Point outs to one Point Param.?

It seems impossible :D

Thanks Daniel Piker (; nevertheless, its very helpful to me!

Attachments:

What the..jpg, 1.2 MB

Permalink Reply by Daniel Piker on January 30, 2014 at 7:13am

Hi Emanuel,

To connect multiple outputs to one input just hold down shift on the keyboard when connecting

Permalink Reply by Luis Mendez on March 15, 2013 at 3:04am

hi i'm having a problem using your script. i'm using about 10 different boxes and they are mixing all each others i'll send you the script.

Attachments:

Skeleto.gh, 15 KB

Permalink Reply by RWNB on March 17, 2012 at 10:24am

Thank you!

Permalink Reply by Giulio Piacentino on March 17, 2012 at 3:52pm

Very nice discussion! Thanks.

Permalink Reply by Mateusz Zwierzycki on March 17, 2012 at 4:33pm

I have one favour for you - could weaverbird catmull clark component output vertices and faces in datatree, where each branch represents primary face, (which was smoothened/triangulated) ?

This maybe (I am not 100% sure) will convert our meshes (Daniel's and mine) to geometry based on surfaces.

Here is a little proof of concept :

Mesh on the left was was obtained by meshing a surface.

Next it is rebuilded with surface from grid points component, which results with almost same surface as one used to make mesh (surface on right is made from mesh)

Permalink Reply by Giulio Piacentino on March 18, 2012 at 4:09pm

Hi Mateusz,

this is interesting: I've spent now a couple of hours of this Sunday evening to see what this would look like. In general, I think the subdivision component is more helpful when it returns a mesh. To put the two things together, here is a script that takes the mesh and separates it into several sub-meshes, each one being the descendant of an original face. This script works in general for this component.

Attachments: