Voronoi on Curved Surface - attempt - 2

Hi Friends, 

I was trying to create Voronoi geometry on curved surface. Further I also want that geometry to be thicker so it looks like a wall or exterior façade. Unfortunately I am unable to Map voronoi geometry on curved surface.

I received reply from Shridhar. I tried that as well to generate 3d voronoi with 3d brep. I guess it is not working out properly or I am doing something wrong. I am very new to grasshopper and this is my assignment which is due very soon. Please help me with this.

I am attaching herewith screen shot of my voronoi attempts. also a flat form of aprox. geometry what I want on curved surface. My attempt as per Shridhar's suggestion.

Also grasshopper and 3dm. file 

Thanks and regards

Rachit