Add overriding frozen function to Bbox

m4reko · Agriad · davek10 · m4reko · commit 7c535fb07d4a · 2021-03-02T11:40:55.000+01:00
This function copies minpos when frozen is called. This commit resolves #19296. Co-authored-by: Agriad <agriad1@yahoo.com> Co-authored-by: davek10 <94davek@gmail.com> Co-authored-by: tjr16 <jerryaccount@126.com>
diff --git a/lib/matplotlib/transforms.py b/lib/matplotlib/transforms.py
@@ -807,6 +807,12 @@ def invalidate(self):
             self._check(self._points)
             super().invalidate()
 
+    def frozen(self):
+        # docstring inherited
+        frozen_bbox = Bbox(self.get_points().copy())
+        frozen_bbox._minpos = self.minpos.copy()
+        return frozen_bbox
+
     @staticmethod
     def unit():
         """Create a new unit `Bbox` from (0, 0) to (1, 1)."""
