X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/1f22b625a045b7ce25a4668f404071aef8ab8b09..8a70e1c082b985c2ff1802d6ebff60783a6fc2b6:/app/assets/javascripts/osm.js.erb

diff --git a/app/assets/javascripts/osm.js.erb b/app/assets/javascripts/osm.js.erb
index bd65182a7..719c6b832 100644
--- a/app/assets/javascripts/osm.js.erb
+++ b/app/assets/javascripts/osm.js.erb
@@ -71,10 +71,6 @@ OSM = {
       mapParams.bounds = L.latLngBounds(
         [parseFloat(params.minlat), parseFloat(params.minlon)],
         [parseFloat(params.maxlat), parseFloat(params.maxlon)]);
-    } else if (params.lon && params.lat) {
-      mapParams.lon = parseFloat(params.lon);
-      mapParams.lat = parseFloat(params.lat);
-      mapParams.zoom = parseInt(params.zoom || 5);
     } else if (params.mlon && params.mlat) {
       mapParams.lon = parseFloat(params.mlon);
       mapParams.lat = parseFloat(params.mlat);
@@ -170,7 +166,24 @@ OSM = {
   },
 
   locationCookie: function(map) {
-    var center = map.getCenter().wrap();
-    return [center.lng, center.lat, map.getZoom(), map.getLayersCode()].join('|');
+    var center = map.getCenter().wrap(),
+      zoom = map.getZoom(),
+      precision = OSM.zoomPrecision(zoom);
+    return [center.lng.toFixed(precision), center.lat.toFixed(precision), zoom, map.getLayersCode()].join('|');
+  },
+
+  distance: function(latlng1, latlng2) {
+    var lat1 = latlng1.lat * Math.PI / 180,
+      lng1 = latlng1.lng * Math.PI / 180,
+      lat2 = latlng2.lat * Math.PI / 180,
+      lng2 = latlng2.lng * Math.PI / 180,
+      latdiff = lat2 - lat1,
+      lngdiff = lng2 - lng1;
+
+    return 6372795 * 2 * Math.asin(
+      Math.sqrt(
+        Math.pow(Math.sin(latdiff / 2), 2) + 
+        Math.cos(lat1) * Math.cos(lat2) * Math.pow(Math.sin(lngdiff / 2), 2)
+      ));
   }
 };