vectors.py: Don't error out when normalizing zero length vectors

2016-10-12 21:49:28 +02:00 · 2016-10-12 21:49:28 +02:00 · de7a168377
parent 4ae6303053
commit de7a168377
1 changed files with 2 additions and 0 deletions
--- a/boxes/vectors.py
+++ b/boxes/vectors.py
@ -18,6 +18,8 @@ import math
 def normalize(v):
    "set lenght of vector to one"
    l = (v[0] ** 2 + v[1] ** 2) ** 0.5
+    if l == 0.0:
+        return (0.0, 0.0)
    return (v[0] / l, v[1] / l)