Surface divided by a Voronoi.fonction and then projection of a sketch (letter PI) on the surface.

the projection controls the parameters of the Voronoi cells. they are different whether inside or outside the projection

I wanted to see how easy to get a nearly hexagonal grid on a surface with a voronoi function.

I tried with letter PHI which has a hole (not in PI). you need to take the hole into account in the model which makes it a couple of feature more than PI.

model inside​​​​​​​.