finish backport of pr 575 for slider fix

jdh2358 · jdh2358 · commit 04442b9623d9 · 2012-03-23T23:26:33.000-05:00
diff --git a/lib/matplotlib/patches.py b/lib/matplotlib/patches.py
@@ -768,7 +768,12 @@ def __init__(self, xy, closed=True, **kwargs):
         Patch.__init__(self, **kwargs)
         xy = np.asarray(xy, np.float_)
         self._path = Path(xy)
-        self.set_closed(closed)
+
+        self._closed = closed
+        if closed and len(xy):
+            xy = np.concatenate([xy, [xy[0]]])
+
+        self._set_xy(xy)
 
     def get_path(self):
         return self._path
@@ -777,6 +782,10 @@ def get_closed(self):
         return self._closed
 
     def set_closed(self, closed):
+
+        if self._closed == bool(closed):
+            return
+
         self._closed = closed
         xy = self._get_xy()
         if closed:
