From 7b3f27358bdc0e68a6e656f82abfff9707f8af20 Mon Sep 17 00:00:00 2001
From: Justin Lin <justin.sdk@gmail.com>
Date: Tue, 12 Apr 2022 19:37:15 +0800
Subject: [PATCH] refactor: we don't really need angle

---
 src/ptf/ptf_circle.scad | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/ptf/ptf_circle.scad b/src/ptf/ptf_circle.scad
index 21a66f26..5293ae15 100644
--- a/src/ptf/ptf_circle.scad
+++ b/src/ptf/ptf_circle.scad
@@ -12,8 +12,11 @@ function ptf_circle(size, point) =
     let(
         p_offset = -size / 2,
         p = point + p_offset,
-        n = max(abs(p.x), abs(p.y)),
-        r = n * 1.414,
-        a = atan2(p.x, p.y)
+        leng = norm(p)
     )
-    [r * cos(a), r * sin(a)];
\ No newline at end of file
+    leng == 0 ? [0, 0] :
+    let(
+        n = max(abs(p.x), abs(p.y)),
+        r = n * 1.414
+    )
+    [p.y, p.x] * (r / leng);
\ No newline at end of file