List of curves and Loft + parameter and sun path


Im currently designing Sun umbrella which changes automatically, according to the sun path. (opens&closes, height and perforated with holes)
i have two questions:

  1. how do i relate the parameters to the sun path?
  2. how do i complete the loft on the rest of the poles? like i did with the first one. there most be a shorter way but im just starting Grasshopper.
    thank you!
    i added a picture and the file. (20.9 KB)

IMHO, this part is gonna be a huge topic for your homework that you have to solve yourself in the long term.

This part is simple that I can help. (19.4 KB)