From 3a05352f73a2fc882af6d8e2badf285aa7b296db Mon Sep 17 00:00:00 2001
From: Grant Sanderson <grant@3blue1brown.com>
Date: Thu, 16 Feb 2023 15:02:15 -0800
Subject: [PATCH] Add poly_line_length function

---
 manimlib/utils/space_ops.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/manimlib/utils/space_ops.py b/manimlib/utils/space_ops.py
index fdc2f52b..8a696dd0 100644
--- a/manimlib/utils/space_ops.py
+++ b/manimlib/utils/space_ops.py
@@ -61,6 +61,13 @@ def normalize(
         return np.zeros(len(vect))
 
 
+def poly_line_length(points):
+    """
+    Return the sum of the lengths between adjacent points
+    """
+    diffs = points[1:] - points[:-1]
+    return np.sqrt((diffs**2).sum(1)).sum()
+
 # Operations related to rotation