From 2294cdea4ff0383eede0c3a30ce74512dba627ad Mon Sep 17 00:00:00 2001
From: Grant Sanderson <grant@3blue1brown.com>
Date: Wed, 19 Jun 2019 16:08:14 -0700
Subject: [PATCH] Allow Bubble to flip over any axis, which was unnecessarily
 restricted before

---
 manimlib/mobject/svg/drawings.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/manimlib/mobject/svg/drawings.py b/manimlib/mobject/svg/drawings.py
index 2e7cbaa9..e4419a5b 100644
--- a/manimlib/mobject/svg/drawings.py
+++ b/manimlib/mobject/svg/drawings.py
@@ -455,9 +455,10 @@ class Bubble(SVGMobject):
         mover.shift(point - self.get_tip())
         return self
 
-    def flip(self):
-        Mobject.flip(self)
-        self.direction = -np.array(self.direction)
+    def flip(self, axis=UP):
+        Mobject.flip(self, axis=axis)
+        if abs(axis[0]) > 0:
+            self.direction = -np.array(self.direction)
         return self
 
     def pin_to(self, mobject):