Spherical Mesh inflation

Hi all,

I have a cluster of spheres of different radii within a box and want to expand or inflate them so they fill the box, but deform to each other. Any thoughts on how to make this happen? Is it possible to use Kangaroo pressure without any fixed points?

Replies to This Discussion

Permalink Reply by martyn hogg on October 8, 2013 at 12:21pm

Isn't this just like a 3D Voronoi?

Permalink Reply by Claudia Otten on October 8, 2013 at 12:38pm

I guess I'm looking for something that's not Vornoi, like in this post: http://www.grasshopper3d.com/forum/topics/alternative-to-a-voronoi

"You can start with a sphere packing algorithm and then inflate the spheres so they push against each other and deform.

I've seen some sphere packing somewhere around here( perhaps using other polyedra from Geometry Gym) and I'm not sure if Kangaroo allows you to inflate spheres, one for Daniel! "

Basically, I don't think that Kangaroo can inflate spheres.

Permalink Reply by Daniel Piker on October 8, 2013 at 1:21pm

Inflating spheres isn't a problem, but having multiple inflated geometries interact and push on each other is more complicated.

However I think the approach suggested above is a good one, and can avoid the need for having complex meshes interacting.

You could do a sphere packing with Kangaroo to get the centres of the cells, then take a 3D Voronoi. Then inflating a sphere within each cell should give the effect you describe.

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