1 files changed, 1 insertions, 12 deletions
diff --git a/lib/extensions/flip.py b/lib/extensions/flip.py
index 65dbdc1f..0864da85 100644
--- a/lib/extensions/flip.py
+++ b/lib/extensions/flip.py
@@ -1,6 +1,5 @@
 import inkex
 import cubicsuperpath
-from shapely import geometry as shgeo
 
 from .base import InkstitchExtension
 from ..i18n import _
@@ -8,21 +7,11 @@ from ..elements import SatinColumn
 
 
 class Flip(InkstitchExtension):
-    def subpath_to_linestring(self, subpath):
-        return shgeo.LineString()
-
     def flip(self, satin):
         csp = satin.path
 
         if len(csp) > 1:
-            flattened = satin.flatten(csp)
-
-            # find the rails (the two longest paths) and swap them
-            indices = range(len(csp))
-            indices.sort(key=lambda i: shgeo.LineString(flattened[i]).length, reverse=True)
-
-            first = indices[0]
-            second = indices[1]
+            first, second = satin.rail_indices
             csp[first], csp[second] = csp[second], csp[first]
 
             satin.node.set("d", cubicsuperpath.formatPath(csp))