From 79ac6a59e4e3e517242e7485a6e6a15e34293d85 Mon Sep 17 00:00:00 2001
From: jan <jan@mpxd.net>
Date: Sun, 15 Apr 2018 15:25:38 -0700
Subject: [PATCH] Fix mirror axis in Pattern.mirror()

---
 masque/pattern.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/masque/pattern.py b/masque/pattern.py
index f61ee4e..3256abb 100644
--- a/masque/pattern.py
+++ b/masque/pattern.py
@@ -359,7 +359,7 @@ class Pattern:
         :return: self
         """
         for entry in self.shapes + self.subpatterns:
-            entry.offset[axis] *= -1
+            entry.offset[axis - 1] *= -1
         return self
 
     def mirror_elements(self, axis: int) -> 'Pattern':