From 23f445c66b96c074c8ca430300ffab599e3eb6ee Mon Sep 17 00:00:00 2001
From: Yuval Adam <yuv.adm@gmail.com>
Date: Fri, 18 May 2012 12:42:31 +0300
Subject: default alpha param fix

---
 lsys.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lsys.js b/lsys.js
index 8f7ec49..b102107 100644
--- a/lsys.js
+++ b/lsys.js
@@ -13,8 +13,9 @@ function LSystem(axiom, rules) {
   };
 
   this.draw = function(alpha) {
-    if (alpha === undefined)
+    if (!alpha) {
       alpha = 90 * (Math.PI / 180);
+    }
 
     var coords = [];
     var stack = [];
-- 
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