From 5ff44f5850c8844eabcd6149e004d2a54bacb15b Mon Sep 17 00:00:00 2001
From: Grant Sanderson <grant@3blue1brown.com>
Date: Mon, 30 Jan 2023 20:51:04 -0800
Subject: [PATCH] Divide by epsilon prior to normalizing

---
 manimlib/mobject/types/surface.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/manimlib/mobject/types/surface.py b/manimlib/mobject/types/surface.py
index b79e95da..5c8b6f6c 100644
--- a/manimlib/mobject/types/surface.py
+++ b/manimlib/mobject/types/surface.py
@@ -96,8 +96,8 @@ class Surface(Mobject):
         ]
         self.set_points(points)
         self.data["normal"] = normalize_along_axis(cross(
-            du_points - points,
-            dv_points - points,
+            (du_points - points) / self.epsilon,
+            (dv_points - points) / self.epsilon,
         ), 1)
 
     def apply_points_function(self, *args, **kwargs):