3d voronoi or sphere packing

hello folks,

i've googled to my wits end, can anybody point me towards a tutorial explaining how to 3d voronoi for a non-rectilinear volume (such as this: google searched image)? as it stands the 3d voronoi component only seems to output based on a rectilinear bounding box...

or if you can point me to a tutorial explaining sphere packing in a given volume...

thank you!

dustin

Replies to This Discussion

Permalink Reply by Taylour on February 16, 2014 at 6:09am

I don't know about 3D circle packing, but once you have your curves maybe these will help:

Exoskeleton

http://www.grasshopper3d.com/profiles/blogs/introducing-exoskeleton...

Millipede

http://www.sawapan.eu/

Skeletal Mesh

http://www.grasshopper3d.com/forum/topics/skeletal-mesh?page=3&...

Permalink Reply by dustin on February 16, 2014 at 3:48pm

Thank you, Taylour,

I can't believe I hadn't come across the Exoskeleton component yet.

I've tried Millipede, but I confess it's not intuitive for me (and the GUI, while interesting, for me only served to obfuscate)

The Skeletal Mesh tool is great! I'd love to figure out how to do something like this leaf venation

with it...Any ideas?

I'd still like to figure out how to pack a volume with another volume (spheres or icosahedrons), if anybody else has tips, I'd love it...

Best,

Dustin

Permalink Reply by Andrew Kudless on February 16, 2014 at 5:35pm

Just find the boolean intersection of your outside shape and the 3D voronoi cells. You can also use the "Shape in Brep" component to weed out the cells that are either fully inside or fully outside your outside shape. You need to merge the fully inside cells back with the boolean intersected cells at the end as the boolean intersection will fail on those.