From db45d9e646ae0345218fe56cefe1d5ab6196fa35 Mon Sep 17 00:00:00 2001
From: Grant Sanderson <grant@3blue1brown.com>
Date: Mon, 16 Jan 2023 13:26:44 -0800
Subject: [PATCH] Add array_is_constant

---
 manimlib/utils/iterables.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/manimlib/utils/iterables.py b/manimlib/utils/iterables.py
index bbecbab9..e8880552 100644
--- a/manimlib/utils/iterables.py
+++ b/manimlib/utils/iterables.py
@@ -130,6 +130,9 @@ def arrays_match(arr1: np.ndarray, arr2: np.ndarray) -> bool:
     return arr1.shape == arr2.shape and (arr1 == arr2).all()
 
 
+def array_is_constant(arr: np.ndarray) -> bool:
+    return len(arr) > 0 and not (arr - arr[0]).any()
+
 def hash_obj(obj: object) -> int:
     if isinstance(obj, dict):
         return hash(tuple(sorted([