1 files changed, 1 insertions, 0 deletions
diff --git a/js/util.js b/js/util.js
index c3940d3..80fce9c 100644
--- a/js/util.js
+++ b/js/util.js
@@ -55,6 +55,7 @@ function mod(n,m){ return n-(m * floor(n/m)) }
 function dist(x0,y0,x1,y1){ return sqrt(pow(x1-x0,2)+pow(y1-y0,2)) }
 function angle(x0,y0,x1,y1){ return atan2(y1-y0,x1-x0) }
 function avg(m,n,a){ return (m*(a-1)+n)/a }
+function quantize(a,b){ return ~~(a/b)*b }
 
 function pixel(x,y){ return 4*(mod(y,actual_h)*actual_w+mod(x,actual_w)) }
 function rgbpixel(d,x,y){