From fff23803fa148304edef2cc1bd947c8079e5c3b8 Mon Sep 17 00:00:00 2001
From: Kaalleen <36401965+kaalleen@users.noreply.github.com>
Date: Fri, 14 Nov 2025 13:12:04 +0100
Subject: satin: fix synthesize rungs (#4042)

---
 lib/elements/satin_column.py | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

(limited to 'lib/elements')

diff --git a/lib/elements/satin_column.py b/lib/elements/satin_column.py
index 277c4f84..68cbbd95 100644
--- a/lib/elements/satin_column.py
+++ b/lib/elements/satin_column.py
@@ -687,12 +687,20 @@ class SatinColumn(EmbroideryElement):
 
     @cache
     def _synthesize_rungs(self):
+        # self.rails may contain additoinal nodes through flattening
+        # at this point we know that we only have two paths, both paths are rails
+        # so we can access the original nodes by parsing and filtering the original path
+        paths = Path(self.parse_path()).break_apart()
+        rails = [list(path.end_points) for path in paths if len(list(path.end_points)) > 1]
+        if len(rails) != 2:
+            return []
+
         rung_endpoints = []
         # check for unequal length of rails
-        equal_length = len(self.rails[0]) == len(self.rails[1])
+        equal_length = len(rails[0]) == len(rails[1])
 
         rails_to_reverse = self._get_rails_to_reverse()
-        for i, points in enumerate(self.rails):
+        for i, points in enumerate(rails):
 
             if rails_to_reverse[i]:
                 points = points[::-1]
-- 
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