Hi,

I am just in need of a number of ICOSAHEDRA with a different
number of facets.

I could do that in Cinema 4D, import them as *.obj and then rebuild them
in MOI, but maybe there is a way to generate parametric icosahedra within
MOI itself ?

Surely with the Elephant by Max Smirnov! ;)

Look here and folowing...
https://moi3d.com/forum/index.php?webtag=MOI&msg=7777.1314

Tom,

Yes there is with the Node Editor and the qhull node.

http://moi3d.com/forum/index.php?webtag=MOI&msg=10052.26

Wayne.

Here is a quick example of creating a solid 3d parametric polygon from points using qhull.

Wayne, I thought it could be done somehow when I looked at your amazing ghulldiamond.nod you posted in my last "array on surface"-thread. Thank you, will have a look at i

Pilou, you answers come faster than the posting of my questions ;-) Thank you !

Hi Tom,

Re: Terminology.

Icosahedra (plural), are solids with twenty planar faces. There are an infinite number.

The regular icosahedron has equilateral triangular faces.

Polyhedra have various numbers of faces.

- Brian

In the past, I have used MoI to manually build the platonic solids, as an exercise.

There was a file with a lot of "gem" solids...
Also, antiprism script.

Hi Brian,

"The regular icosahedron has equilateral triangular faces!

This one is the one I need !

Do not have one at work, but see here for .3dm file:

http://www.rhino3d.nl/pythposter/pyth3dm-eng.html

- Brian

You can always construct one in MoI. http://moi3d.com/forum/index.php?webtag=MOI&msg=2140.46

Before I knew of MoI: MoI Forum 2008 ref link:
http://moi3d.com/forum/index.php?webtag=MOI&msg=2140.55
There is a zip file of gif and names further down.

Tom

If all you need is a regular icosahedron, it is available as a pulldown option in Solids/Polyhedron node.

Other options include: Tetrahedron, Octahedron, Hexahedron (Cube) & Dodecahedron

James
https://www.instagram.com/nodeology/

That is a great tip, James.

I am attaching what I do in Cinema 4D and importing the result as *.obj in MOI.
And what I would obviously do in MOI, if I would know, how to :-)

In Cinema I can subdivide a basic icosahedron as shown. And there is great
cloner tool from which I diplayed its basic properties

Maybe Copy to Point after Selected Target...
http://kyticka.webzdarma.cz/3d/moi/#CopyToPoints

Look also Dispersion by Max Smirnov
http://moi3d.com/forum/index.php?webtag=MOI&msg=6486.1

Hi Pilou.
I tried out copytopoint and had not found time yet to look at diepersion
what I will do today !

Thanks Pilou.

Regarding dispersion by Max:
The recently added methods for dropping points on surfaces, and getting surface normals, etc.,
should open up some more possibilities.

- Brian

Tom,

OK so now I understand what you meant earlier:



In NodeEditor, you can subdivide icosahedron (2 subdivides shown) and attach cylinders to vertices:


The .nod file is attached....however you will need current NE mod nodes, found here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=9358.10

Hope this helps
James
https://www.instagram.com/nodeology/

Hi James, you are amazing ! I really have respect for those
who have mastered the art of advanced nodology. The more
I dig into the Icosahedron the more I am fascinated by its
geometrical properties ...