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Comment by Paul Shepherd on July 26, 2011 at 7:23am

AAARGH!

I have just spent an hour starting to write Conway Operators components for grasshopper and got half way through before realising it's IMPOSSIBLE.

The stupid Rhino Mesh object only allows Triangles or Quads for its MeshFaces.  But the Conway operators (like Dual for example) generate generic polygonal faces (like Hexagons for example).

 

Obviously I can split a hexagon into triangles but whilst it would work Geometrically, it would spoil the topological relationships and so two successive Duals (for example) wouldn't get you back to where you started.

 

Anyone got any bright ideas as to how to get Rhino to support a generic polyhedron in a Mesh?

Comment by Riccardo Bovo on February 22, 2011 at 12:45pm

Hi Harri,

I agree with you.. have some components for change mesh topology on grasshopper would be amazing ...maybe we should suggest it to Giulio piacentino (wavebird creator)

 

anyway have you ever heard about TopMod .. is a software that has a whole range of mesh topology tools,
if you never come a cross it is worth to take a look http://code.google.com/p/topmod/...

it would be very nice to take a look to your code once is debug.... this is my email please let me know when is ready ...:-P  riccardo.bovo.design@gmail.com

cheers

Riccardo

Comment by Harri on February 21, 2011 at 5:46pm

Hi Ricardo,

Yes, conway operators change mesh topology, see this link.  They can be used to create intricate meshes and also sub-division smoothing.  I have not seen a grasshopper tool for these but would be a nice little project for someone!

I used a processing app I wrote for the mesh form-finding and operators.  There are a few little bugs to iron out but once this is complete I would be happy to share.

Comment by Riccardo Bovo on February 19, 2011 at 12:41pm

Hi Harr,

really nice shape, I never heard Conway operators,

I guess they are about mesh topology, are them part of grasshopper tools components plugin ?

or did u use another software and imported the mesh?

cheers 

Riccardo