1 files changed, 1 insertions, 0 deletions
diff --git a/js/util.js b/js/util.js
index dd5be06..d775ca1 100644
--- a/js/util.js
+++ b/js/util.js
@@ -12,6 +12,7 @@ function trim(s){ return s.replace(/^\s+/,"").replace(/\s+$/,"") }
 var E = Math.E
 var PI = Math.PI
 var PHI = (1+Math.sqrt(5))/2
+var TWO_PI = PI*2
 function clamp(n,a,b){ return n<a?a:n<b?n:b }
 function lerp(n,a,b){ return (b-a)*n+a }
 function mix(n,a,b){ return a*(1-n)+b*n }