From accad3db9fbefe54d3211e1c3467eabb34de88e2 Mon Sep 17 00:00:00 2001
From: Jan Petykiewicz <jan@mpxd.net>
Date: Sat, 14 Feb 2026 19:20:50 -0800
Subject: [PATCH] Prefer [1 - axis] for clarity

---
 masque/shapes/arc.py             | 2 +-
 masque/shapes/ellipse.py         | 2 +-
 masque/shapes/path.py            | 2 +-
 masque/shapes/poly_collection.py | 2 +-
 masque/shapes/polygon.py         | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/masque/shapes/arc.py b/masque/shapes/arc.py
index 480835e..79411d6 100644
--- a/masque/shapes/arc.py
+++ b/masque/shapes/arc.py
@@ -384,7 +384,7 @@ class Arc(PositionableImpl, Shape):
         return self
 
     def mirror(self, axis: int = 0) -> 'Arc':
-        self.offset[axis - 1] *= -1
+        self.offset[1 - axis] *= -1
         self.rotation *= -1
         self.rotation += axis * pi
         self.angles *= -1
diff --git a/masque/shapes/ellipse.py b/masque/shapes/ellipse.py
index 6029f2f..6699e53 100644
--- a/masque/shapes/ellipse.py
+++ b/masque/shapes/ellipse.py
@@ -189,7 +189,7 @@ class Ellipse(PositionableImpl, Shape):
         return self
 
     def mirror(self, axis: int = 0) -> Self:
-        self.offset[axis - 1] *= -1
+        self.offset[1 - axis] *= -1
         self.rotation *= -1
         self.rotation += axis * pi
         return self
diff --git a/masque/shapes/path.py b/masque/shapes/path.py
index 7778428..654cfaa 100644
--- a/masque/shapes/path.py
+++ b/masque/shapes/path.py
@@ -396,7 +396,7 @@ class Path(Shape):
         return self
 
     def mirror(self, axis: int = 0) -> 'Path':
-        self.vertices[:, axis - 1] *= -1
+        self.vertices[:, 1 - axis] *= -1
         return self
 
     def scale_by(self, c: float) -> 'Path':
diff --git a/masque/shapes/poly_collection.py b/masque/shapes/poly_collection.py
index 6048f24..afa9c99 100644
--- a/masque/shapes/poly_collection.py
+++ b/masque/shapes/poly_collection.py
@@ -179,7 +179,7 @@ class PolyCollection(Shape):
         return self
 
     def mirror(self, axis: int = 0) -> Self:
-        self._vertex_lists[:, axis - 1] *= -1
+        self._vertex_lists[:, 1 - axis] *= -1
         return self
 
     def scale_by(self, c: float) -> Self:
diff --git a/masque/shapes/polygon.py b/masque/shapes/polygon.py
index c8c3ddd..6440144 100644
--- a/masque/shapes/polygon.py
+++ b/masque/shapes/polygon.py
@@ -394,7 +394,7 @@ class Polygon(Shape):
         return self
 
     def mirror(self, axis: int = 0) -> 'Polygon':
-        self.vertices[:, axis - 1] *= -1
+        self.vertices[:, 1 - axis] *= -1
         return self
 
     def scale_by(self, c: float) -> 'Polygon':