From 233a638e3eed6a37a6410d1ac03628d18f6b2903 Mon Sep 17 00:00:00 2001
From: euzuro <euzuro@metacarta.com>
Date: Thu, 18 May 2006 05:31:17 +0000
Subject: [PATCH] change diff to add in OpenLayers.LonLat. Even though it is
 not used, it is probably better to have all these Util objects be consistent.
 See [129]

git-svn-id: http://svn.openlayers.org/trunk/openlayers@131 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
---
 lib/OpenLayers/Util.js | 10 ++++++----
 tests/test_LonLat.html | 13 ++++++-------
 2 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/lib/OpenLayers/Util.js b/lib/OpenLayers/Util.js
index eeeaf5fcf8..8ee49d7adf 100644
--- a/lib/OpenLayers/Util.js
+++ b/lib/OpenLayers/Util.js
@@ -175,13 +175,15 @@ OpenLayers.LonLat.prototype = {
     },
 
     /** 
-    * @param {OpenLayers.LonLat} ll
+    * @param {float} lon
+    * @param {float} lat
     *
-    * @return OpenLayers.LonLat object with difference between the two coords
+    * @return A new OpenLayers.LonLat object with the lon and lat passed-in
+    *         added to this's. 
     * @type OpenLayers.Pixel
     */
-    diff:function(ll) {
-        return new OpenLayers.LonLat(this.lon - ll.lon, this.lat - ll.lat);
+    add:function(lon, lat) {
+        return new OpenLayers.LonLat(this.lon + lon, this.lat + lat);
     },
 
     /** 
diff --git a/tests/test_LonLat.html b/tests/test_LonLat.html
index 396decdbf4..5f8017789c 100644
--- a/tests/test_LonLat.html
+++ b/tests/test_LonLat.html
@@ -38,18 +38,17 @@
         t.eq( lonlat.lon, 5, "changing oldLonLat.lon doesn't change lonlat.lon");
     }
 
-    function test_04_LonLat_diff(t) {
+    function test_04_LonLat_add(t) {
         t.plan( 4 );
 
         lonlatA = new OpenLayers.LonLat(10,100);
-        lonlatB = new OpenLayers.LonLat(15,150);
 
-        diffpx = lonlatA.diff(lonlatB);
-        t.eq( lonlatA.lon, 10, "lonlatA.lon is not modified by diff operation");
-        t.eq( lonlatA.lat, 100, "lonlatA.lat is not modified by diff operation");
+        addpx = lonlatA.add(5, 50);
+        t.eq( lonlatA.lon, 10, "lonlatA.lon is not modified by add operation");
+        t.eq( lonlatA.lat, 100, "lonlatA.lat is not modified by add operation");
 
-        t.eq( diffpx.lon, -5, "diffpx.lon is set correctly");
-        t.eq( diffpx.lat, -50, "diffpx.lat is set correctly");
+        t.eq( addpx.lon, 15, "addpx.lon is set correctly");
+        t.eq( addpx.lat, 150, "addpx.lat is set correctly");
     }
     
     function test_06_LonLat_equals(t) {