Hi Pilou,

> My Methode seen above :)

Looks like a good method for the purposes of visualization!

But I think for the purposes of architectural design for construction, there will be some desire to have a very regular and uniform shape, where each triangle touches the other one at the same height above the ellipse.

I'm not sure that your method will produce that degree of regularity but it looks like a good one to at least get something that looks close to the desired output.

- Michael