I am trying to make a 3D contour plot that looks like a grid of cylinders to represent the Fermi surface of a metal, like below:
I have no problem generating something that kind of looks like it.
Cos[x] + Cos[y] + Cos[z] == 0). (This shows multiple unit cells.)
I need it to be more cylindrical, though. I need to also later plot cross-sections of this for planes at different heights, so it is more than just wanting the accurate figure.
I think this is tricky because it is not well-suited to either cylindrical coordinates or spherical coordinates. I was thinking that I could just create three cylinders at right angles to each other and superimpose them, but I can't figure out a way to make the equation for cylinders.
Any help on this would be great!