From 480eec9a8fdff94ad23babe5ebc06ca80772b8c3 Mon Sep 17 00:00:00 2001
From: Justin Lin <justin.sdk@gmail.com>
Date: Tue, 9 Feb 2021 10:52:17 +0800
Subject: [PATCH] add polar_coordinate

---
 src/experimental/note.md  | 1 +
 src/polar_coordinate.scad | 3 +++
 2 files changed, 4 insertions(+)
 create mode 100644 src/polar_coordinate.scad

diff --git a/src/experimental/note.md b/src/experimental/note.md
index cba43313..5358658b 100644
--- a/src/experimental/note.md
+++ b/src/experimental/note.md
@@ -11,6 +11,7 @@ dotSCAD 3.0 Dev
 New modules/functions
 
 - `angle_between`
+- `polar_coordinate`
 - `spherical_coordinate`
 - `util/every`
 - `util/some`
diff --git a/src/polar_coordinate.scad b/src/polar_coordinate.scad
new file mode 100644
index 00000000..0b377a8b
--- /dev/null
+++ b/src/polar_coordinate.scad
@@ -0,0 +1,3 @@
+use <__comm__/__angy_angz.scad>;
+
+function polar_coordinate(point) = [norm(point), atan2(point[1], point[0])]; // r, theta 
\ No newline at end of file