From a814966112fc59c39865c791b1e95abcd82d2fd7 Mon Sep 17 00:00:00 2001
From: Max Franz <maxkfranz@gmail.com>
Date: Thu, 28 Apr 2016 16:27:14 -0400
Subject: [PATCH] fix bounding box cache keys causing ele distortions in
 texture caches #593 #1196

---
 src/collection/dimensions.js | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/collection/dimensions.js b/src/collection/dimensions.js
index 0ebd349af0..4b2ae4894a 100644
--- a/src/collection/dimensions.js
+++ b/src/collection/dimensions.js
@@ -617,22 +617,22 @@ var boundingBoxImpl = function( ele, options ){
   return bounds;
 };
 
-var appendTfStr = function( str, val ){
+var tf = function( val ){
   if( val ){
-    str += 't';
+    return 't';
   } else {
-    str += 'f';
+    return 'f';
   }
 };
 
 var getKey = function( opts ){
   var key = '';
 
-  appendTfStr( key, opts.incudeNodes );
-  appendTfStr( key, opts.includeEdges );
-  appendTfStr( key, opts.includeLabels );
-  appendTfStr( key, opts.includeShadows );
-  appendTfStr( key, opts.includeOverlays );
+  key += tf( opts.incudeNodes );
+  key += tf( opts.includeEdges );
+  key += tf( opts.includeLabels );
+  key += tf( opts.includeShadows );
+  key += tf( opts.includeOverlays );
 
   return key;
 };