1  function fibonacci_lattice2(n, radius = 1, rt_dir = "CT_CLK") =
 2      let(
 3          g = 2/ (1 + sqrt(5)),
 4          dir = rt_dir == "CT_CLK" ? -1 : 1
 5      ) 
 6      [
 7          for(i = [0:n - 1]) 
 8          let(
 9              k = i + 0.5,
10              r = sqrt(k / n),
11              theta = dir * k * g * 360
12          )
13          [radius * r * cos(theta), radius * r * sin(theta)]
14      ];
15  
16  num_pts = 300;
17  pts = fibonacci_lattice2(num_pts);
18  
19  for(p = pts) {
20      translate(p)
21          circle(.01, $fn = 24);
22  }
23