From c93d1ae897a674ed3bec7042371fae2b6ef77016 Mon Sep 17 00:00:00 2001
From: Justin Lin <justin.sdk@gmail.com>
Date: Tue, 19 Jul 2022 10:05:36 +0800
Subject: [PATCH] add fibonacci_lattice2

---
 src/experimental/fibonacci_lattice2.scad | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 src/experimental/fibonacci_lattice2.scad

diff --git a/src/experimental/fibonacci_lattice2.scad b/src/experimental/fibonacci_lattice2.scad
new file mode 100644
index 00000000..5c13487d
--- /dev/null
+++ b/src/experimental/fibonacci_lattice2.scad
@@ -0,0 +1,24 @@
+function fibonacci_lattice2(n, radius = 1, rt_dir = "CT_CLK") =
+    let(
+        g = (1 + sqrt(5)) / 2,
+        dir = rt_dir == "CT_CLK" ? 1 : -1
+    ) 
+    [
+        for(i = [0:n - 1]) 
+        let(
+            k = (i + 0.5),
+            r = sqrt(k / n),
+            theta = dir * k * g * 180
+        )
+        [radius * r * cos(theta), radius * r * sin(theta)]
+    ];
+
+
+num_pts = 300;
+pts = fibonacci_lattice2(num_pts);
+
+for(p = pts) {
+    translate(p)
+        circle(.01, $fn = 24);
+}
+