I’m fascinated by Shigeru Ban’s Nine Bridge Club house. The projection of the a rectangular grid down into these funnel shapes is such a simple idea on a large scale and totally mind bending in the details.
For my sketch, I made a quarter of one funnel with a revolve, cut it down to a square edge, divided the surface, then turned off the U and V grids, and used intersects projected from Level 1.
The panel is just a half step pattern with this geometry.
Plenty of flaws in the lattice (intersect based gridlines can get a little funky at the edges, particularly in tangency conditions) but it’s getting there.