# gen_points.py

# Creating a Ring Structure

​

import random
import math

def ring(num, innerR, outerR):
   data = []
   n = 0
   while n < num:
       x = random.uniform(-outerR, outerR)
       y = 0
       z = random.uniform(-outerR, outerR)
       dist = math.sqrt(x * x + z * z)
       if dist >= innerR and dist <= outerR:
           data.append( (x,y,z) )
           n = n + 1
   return data

}