I am trying to create the 'pumpkin creases' like it displays in my poorly created image. I can't explain it with words but it looks like magnetic fields? It is also the reason I am posting a question because I simply can't find the right words for describing this. I need it as shader of course. So the 'texture' from top would look like outgrowing spikes or lines from center.
https://i.imgur.com/9cgI20e.mp4 -- somewhat visual representation of how the lines grow along the planes and towards the ends of the lines.