From 8d87df6c0eda1f9490afc5ffa83c120cb286df87 Mon Sep 17 00:00:00 2001
From: samreid <reids@colorado.edu>
Date: Fri, 23 Oct 2015 10:52:17 -0600
Subject: [PATCH] Added a tolerance of 1E-3 around required icon aspect ratios,
 see #263

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

diff --git a/js/NavigationBar.js b/js/NavigationBar.js
index e82b9520..b6da2c1b 100644
--- a/js/NavigationBar.js
+++ b/js/NavigationBar.js
@@ -69,7 +69,8 @@ define( function( require ) {
       for ( var screenIndex = 0; screenIndex < screens.length; screenIndex++ ) {
         var screen = screens[ screenIndex ];
         var iconAspectRatio = screen.navigationBarIcon.width / screen.navigationBarIcon.height;
-        var validAspectRatio = iconAspectRatio === navbarIconAspectRatio || iconAspectRatio === homeScreenIconAspectRatio;
+        var tolerance = 1E-3;
+        var validAspectRatio = Math.abs( iconAspectRatio - navbarIconAspectRatio ) < tolerance || Math.abs( iconAspectRatio - homeScreenIconAspectRatio ) < tolerance;
         assert && assert( validAspectRatio, 'NavigationBar icons for screen ' + screenIndex + ' did not have a valid aspect ratio.' );
       }
     }