From 5242f387995b6251ff1bf7902b3ac6428f381fb0 Mon Sep 17 00:00:00 2001
From: timb <opuscule@gmail.com>
Date: Mon, 13 Jan 2014 22:11:45 -0800
Subject: make step work like in glsl... step(a,b) returns 0 if b < a, 1
 otherwise

---
 js/util.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'js/util.js')

diff --git a/js/util.js b/js/util.js
index b728377..46943f9 100644
--- a/js/util.js
+++ b/js/util.js
@@ -56,9 +56,11 @@ 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 step (n,a,b) {
-  return clamp((n - a) / (b - a), 0.0, 1.0);
+function step(a, b){
+  return (b >= a) + 0 
+               // ^^ bool -> int
 }
+
 // hermite curve apparently
 function smoothstep(n,a,b){
   var t = clamp((n - a) / (b - a), 0.0, 1.0);
-- 
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