Thanks, interesting. Averaging the faces adjacent to each vertex? @laurent_delrieu appears to be doing something similar in his post above, but it looks like addition instead of average of face normals?
My question was more about the RhinoPolyhedra plugin being available in Grasshopper. I don’t recall that being the case 3+ years ago?
I’ve just created a GH model that displays ALL the polyhedra by branch in a grid. Very cool to see them. I think my favorite is the “Rhombic Icosahedron” which has 20 equal size diamond shaped faces. It is [index = 15] in category “Other Solids” [index = 17].
The red group is an on/off switch - it takes a couple minutes to run. By the way, as I mentioned yesterday, some shapes require a Boundary surface between Polyhedron and Join (Brep Join). Might indicate a subtle bug?