# HG changeset patch
# User Neil Muller <drnlmuller@gmail.com>
# Date 1378465126 -7200
# Node ID e5f525c87eb982ce523b147b21e6ec89ff03bd79
# Parent  11febdb72296c9ccc3547b8f6562550e1381665b
Robustness fix

diff -r 11febdb72296 -r e5f525c87eb9 nagslang/utils.py
--- a/nagslang/utils.py	Fri Sep 06 12:59:51 2013 +0200
+++ b/nagslang/utils.py	Fri Sep 06 12:58:46 2013 +0200
@@ -20,5 +20,7 @@
 
 def vec_with_length(coords, length=1):
     vec = Vec2d(coords)
-    vec.length = length
+    # Don't crash if we're created a zero length vector
+    if vec.length != 0:
+        vec.length = length
     return vec