From 5a44454547d487e80bd8ac6270ef846fb8ad7310 Mon Sep 17 00:00:00 2001
From: Justin Lin <justin.sdk@gmail.com>
Date: Wed, 13 Oct 2021 16:06:22 +0800
Subject: [PATCH] fix join index

---
 src/polyline_join.scad | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/polyline_join.scad b/src/polyline_join.scad
index 52de8108..8acf350c 100644
--- a/src/polyline_join.scad
+++ b/src/polyline_join.scad
@@ -10,6 +10,15 @@ module polyline_join(points) {
         }
     }
 
+    module hull_line2(index) {
+        hull() {
+            translate(points[index]) 
+                children(0);
+            translate(points[index + 1]) 
+                children(1);
+        }
+    }
+
     if($children == 1) {
         for(i = [0:leng - 2]) {
             hull_line(i)
@@ -18,8 +27,10 @@ module polyline_join(points) {
     }
     else {
         for(i = [0:min(leng, $children) - 2]) {
-            hull_line(i)
+            hull_line2(i) {
                 children(i);
+                children(i + 1);
+            }
         }
     }
 }
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