From f0a61beaf5e844f6478b2eade8fc8e95d3f1d81b Mon Sep 17 00:00:00 2001
From: german2020 <german2020@gitee.com>
Date: Mon, 28 Aug 2023 10:10:51 +0800
Subject: [PATCH] fix VShowPassingFlash index out of bounds issue

---
 manimlib/animation/indication.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/manimlib/animation/indication.py b/manimlib/animation/indication.py
index cd01c359..87988df1 100644
--- a/manimlib/animation/indication.py
+++ b/manimlib/animation/indication.py
@@ -244,7 +244,8 @@ class VShowPassingFlash(Animation):
         gaussian = np.exp(-0.5 * zs * zs)
         gaussian[abs(xs - mu) > 3 * sigma] = 0
 
-        submobject.set_stroke(width=widths * gaussian)
+        if len(widths * gaussian) !=0:
+            submobject.set_stroke(width=widths * gaussian)
 
 
     def finish(self) -> None: