From a338e40f16f8e84acfe752a76b820f63fa20a5ce Mon Sep 17 00:00:00 2001
From: rowlap <github@dimebar.com>
Date: Thu, 31 Oct 2019 00:35:43 +0000
Subject: [PATCH] Fix tween() default start

Take a copy instead of a reference to _values, so that start isn't changing
through the loop.
---
 library/piglow.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/piglow.py b/library/piglow.py
index 5795aa4..74062db 100644
--- a/library/piglow.py
+++ b/library/piglow.py
@@ -248,7 +248,7 @@ def tween(duration, end, start=None):
     steps = int(duration / fps)
 
     if start is None:
-        start = _values
+        start = _values.copy()
 
     for x in range(steps):
         new = []