nodeset length

pgfw/Interpolator.py

@@ -162,12 +162,15 @@ class Nodeset(list):
 
     def resize(self, left, length, refresh=True):
         old_left = self[0].x
-        old_length = self[-1].x - old_left
+        old_length = self.get_length()
         for node in self:
             node.x = left + length * (node.x - old_left) / old_length
         if refresh:
             self.set_splines()
 
+    def get_length(self):
+        return self[-1].x - self[0].x
+
 
 class Node(list):