How do I build this kind of structure?

Grasshopper
1

Dear community,

I want to create a structure in Grasshopper but don’t know how to do it. Here’s how it should look:

grafik
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(It’s supposed to be a solid)

I know how to create the yellow parts with lofts or Sweep2s. But I need help connecting them with a body, that’s continuous with them. I do not want you to do it for me, but it would be great if you could point me in the right direction, like which tools or plugins could help me do this.

I don’t think the following points are relevant, but for more context:

  • the yellow components are going to be irregular (the lofting curves won’t be ellipses, but irregular shapes)
  • the whole shape will be bended in space, the big bulbs will be “hanging down”
  • all geometry is gonna be generated in grasshopper, no curves will be imported from rhino

Thank you for your ideas!

Ayu

2

your sketch looks like one of those shapes which are very easy to get using subD modeling

3

What do you need it for? You have triangular surface in the middle, which is a problem for high precision modeling (Industrial design).

Side shapes

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can be done by any surfacing tool, like loft or network surface, or anything.
This middle triangular shape is problematic. You always want to make 3edge or N edge surface into 4 edge surface:

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If you want to keep it N shaped, check out Patch tool in rhino wip, XNurbs, old patch (if good continuity and high precision are not your concern, for example in architecture modeling).

Subd → ToNurbs+pack faces is an option too