From d1e84fc28332a299928e6fbbddca6b38619bdba1 Mon Sep 17 00:00:00 2001
From: Kaalleen <36401965+kaalleen@users.noreply.github.com>
Date: Sat, 12 Jul 2025 07:59:16 +0200
Subject: fix zerodivision error in zigzag to satin (#3858)

---
 lib/extensions/zigzag_line_to_satin.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/extensions/zigzag_line_to_satin.py b/lib/extensions/zigzag_line_to_satin.py
index ed6b8013..4f61f1ed 100644
--- a/lib/extensions/zigzag_line_to_satin.py
+++ b/lib/extensions/zigzag_line_to_satin.py
@@ -166,6 +166,9 @@ class ZigzagLineToSatin(InkstitchExtension):
                         # so we need to find a spot on the smoothed rail to ensure the correct length
                         rung = r[i-1]
                         line = inkex.DirectedLineSegment(rung[0], rung[1])
+                        if line.length == 0:
+                            continue
+
                         point0 = line.point_at_length(-50)
                         point1 = line.point_at_length(line.length + 50)
                         new_point = inkex.bezier.linebezierintersect((point0, point1), [prev, handle_position_start, handle_position_end, point])
-- 
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