Add edge midpoint helper methods

dhomeier · dstansby · dhomeier · commit 8063e15085d1 · 2025-01-28T14:34:09.000+01:00
Co-authored-by: David Stansby &lt;dstansby@gmail.com&gt;
diff --git a/lib/matplotlib/patches.py b/lib/matplotlib/patches.py
@@ -877,6 +877,14 @@ def get_corners(self):
         return self.get_patch_transform().transform(
             [(0, 0), (1, 0), (1, 1), (0, 1)])
 
+    def _get_edge_midpoints(self):
+        """
+        Return the edge midpoints of the rectangle, moving anti-clockwise from
+        the centre of the left-hand edge.
+        """
+        return self.get_patch_transform().transform(
+            [(0, 0.5), (0.5, 0), (1, 0.5), (0.5, 1)])
+
     def get_center(self):
         """Return the centre of the rectangle."""
         return self.get_patch_transform().transform((0.5, 0.5))
@@ -1794,6 +1802,14 @@ def get_co_vertices(self):
             ret = self.get_patch_transform().transform([(0, 1), (0, -1)])
         return [tuple(x) for x in ret]
 
+    def _get_edge_midpoints(self):
+        """
+        Return the edge midpoints of the ellipse, moving anti-clockwise from
+        the centre of the left-hand edge.
+        """
+        return self.get_patch_transform().transform(
+            [(0, 0.5), (0.5, 0), (1, 0.5), (0.5, 1)])
+
 
 class Annulus(Patch):
     """
