SMesh fails on extrusion

Grasshopper
1

My goal is to turn each face of the extrusion into a mesh face, but that fails horribly:

Screenshot showing how SMesh creates a single triangular face
Screenshot showing how SMesh creates a single triangular face2000×1500 367 KB

2024-03-07_SMesh.gh (13.2 KB)

What am I missing?

(I can use Mesh, but then I that creates 16 mesh faces, which is unnecessary for this simple geometry.)

2

Hi Felix -
You could explode the input curve into its composing segments:
image

-wim

3

Thank you, but why do I need to do that?

That also means, I’d have to weld the faces at the end to get a single mesh as intended (and welds are giving me a headache).

4

Hi Felix -

This is more fall-out from the change in Rhino 8 where Grasshopper in general is now aware of extrusion objects, but not all existing components have been updated to correctly deal with those.

→ RH-80861 Grasshopper: Extrusion object to mesh
-wim

5

Thank you for the explanation, and thanks for the link to the bug report!

6

You can use the combine and clean component from Kangaroo to union the four meshes.

7

Thanks for pointing that out! There are some nice utilities in Kangaroo2.