Boundary Mesh

Hi, I’m new to Rhino. I would like to know if it’s possible to create the following meshes in Grasshopper:

  1. A circular plane mesh (blue) with the inner boundary defined by the red mesh below.

  2. A rectangular prism mesh (yellow) with the inner boundary on the top plane formed by the red mesh.

Also, is it possible to target a ratio of 1 for the mesh?

I’ve attached the mesh below. Thank you!

Tankers.3dm (456.4 KB)

I’m more familiar with NURBS surfaces than meshes so converted the ship first. I am surprised that square (“quad”) mesh faces convert without having to triangulate the mesh first :question:

Your #1 question is simple with NURBS. I did this for your #2 question.


ship_2024Oct22a.gh (12.2 KB)

I leave that for a mesh expert.

Hi, @Joseph_Oster, Thanks for the answer

Perhaps the image I sent earlier is not clear. I only mean this section of the rectangular prism, which is cut off by the mesh. If viewed as a NURBS, it looks like this:

Conventionally, when I create a mesh directly in Rhino, the mesh edges sometimes do not connect properly, resulting in gaps like the following:

I guess not. I still don’t know precisely where that cut is?

Why use a mesh at all for ship hulls?

P.S. You can easily move the ship up or the box down to get what you want, eh?