From 410c4153f407b380acee4c27f6e77ca3ab37021a Mon Sep 17 00:00:00 2001
From: Justin Lin <justin.sdk@gmail.com>
Date: Sat, 9 Apr 2022 18:48:35 +0800
Subject: [PATCH] refacto: swap when leng == 2

---
 src/__comm__/_convex_hull3.scad | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/__comm__/_convex_hull3.scad b/src/__comm__/_convex_hull3.scad
index d2293e6d..1544a6ac 100644
--- a/src/__comm__/_convex_hull3.scad
+++ b/src/__comm__/_convex_hull3.scad
@@ -6,6 +6,7 @@ function _cmp(a, b) =
 function _convex_hull_sort_by_xyz(pts) = 
     let(leng = len(pts))
     leng <= 1 ? pts : 
+    leng == 2 ? (_cmp(pts[1], pts[0]) ? pts : [pts[1], pts[0]]) :
         let(
             pivot = pts[0],
             before = [for(j = 1; j < leng; j = j + 1) if(_cmp(pts[j], pivot)) pts[j]],