How do I get the adjacent vertices of a given mesh edge?

Grasshopper
1

Hello!

  1. What’s the right grasshopper component to get the adjacent vertices of a given polygon mesh edge?
    Didn’t find this in the standard components, nor in Weaverbird, or Ivy.

I want to create a parametric 3d model of a geodesic hemispheric dome constructed of timber rods connected through metal knots, and need to do some angle calculation on the edges and vertices.
Something like this:
http://acidome.ru

  1. The dome mesh already exists - anyway, is there a primitive component for a tetrahedron with adjustable subdivisions?

Thanks a lot!
Best
Eugen

2

Found the answer to my second question: it’s ggGeoDome in the GeomGym plugin.

3

Ok, looks like the Grasshopper-plugin “Element” is what I was looking for! It has a component called “Edge Neighbours”.
http://www.food4rhino.com/project/element?etx

… and another interesting plugin: Mesh+

Wow, plenty of stuff to play with!

Best regards
Eugen