How do I create a partial cylinder and apply Voronoi 3D to it?

Grasshopper
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1

Hi all!

I have worked on a full cylinder in the last few weeks to create voronoi 3d in it which makes sure that the whole volume has voronoi cells in it instead of just the surface.

Now, I am trying to apply the same concept for a partial cylinder as attached here

Quarter cylinder reference
Quarter cylinder reference288×247 5.35 KB

And create a voronoi cell to replicate a foam structure

Metal Foam Zoomed in Picture
Metal Foam Zoomed in Picture430×248 41.8 KB

Can you suggest how to approach this to create the partial cylinder geometry and creating voronoi structure in it using Grasshopper.

Also, I am planning on generating a very dense structure, so are there any suggestions to ensure the system doesn’t crash?

Thank you in advance!