Merge branch 'overpass'

[rails.git] / app / assets / javascripts / osm.js.erb

diff --git a/app/assets/javascripts/osm.js.erb b/app/assets/javascripts/osm.js.erb
index 215d5b7ca220e746456fa077584b140cd6277b54..15c1682d5f0e14e925a8c5a4496da16ff577dc02 100644 (file)
--- a/app/assets/javascripts/osm.js.erb
+++ b/app/assets/javascripts/osm.js.erb
@@ -8,6 +8,7 @@ OSM = {
   API_VERSION:           <%= API_VERSION.to_json %>,
   STATUS:                <%= STATUS.to_json %>,
   MAX_NOTE_REQUEST_AREA: <%= MAX_NOTE_REQUEST_AREA.to_json %>,
+  OVERPASS_URL:          <%= OVERPASS_URL.to_json %>,
 
   apiUrl: function (object) {
     var url = "/api/" + OSM.API_VERSION + "/" + object.type + "/" + object.id;
@@ -46,27 +47,13 @@ OSM = {
       mapParams.mlat = parseFloat(params.mlat);
     }
 
-    match = window.location.pathname.match(/\/browse\/(node|way|relation|changeset)\/(\d+)/);
-    if (match) {
-      mapParams.object_zoom = true;
-      mapParams.object = {type: match[1], id: parseInt(match[2])};
-    } else if (params.node || params.way || params.relation || params.note) {
-      mapParams.object_zoom = true;
-
-      if (params.node) {
-        mapParams.object = {type: 'node', id: parseInt(params.node)};
-      } else if (params.way) {
-        mapParams.object = {type: 'way', id: parseInt(params.way)};
-      } else if (params.relation) {
-        mapParams.object = {type: 'relation', id: parseInt(params.relation)};
-      }
-    }
-
-    match = window.location.pathname.match(/\/browse\/note\/(\d+)/);
-    if (match) {
-      mapParams.note = parseInt(match[1]);
-    } else if (params.note) {
-      mapParams.note = parseInt(params.note);
+    // Old-style object parameters; still in use for edit links e.g. /edit?way=1234
+    if (params.node) {
+      mapParams.object = {type: 'node', id: parseInt(params.node)};
+    } else if (params.way) {
+      mapParams.object = {type: 'way', id: parseInt(params.way)};
+    } else if (params.relation) {
+      mapParams.object = {type: 'relation', id: parseInt(params.relation)};
     }
 
     var hash = OSM.parseHash(location.hash);
@@ -76,17 +63,19 @@ OSM = {
       mapParams.lon = hash.center.lng;
       mapParams.lat = hash.center.lat;
       mapParams.zoom = hash.zoom;
-      mapParams.object_zoom = false;
-    } else if (params.lon && params.lat) {
-      mapParams.lon = parseFloat(params.lon);
-      mapParams.lat = parseFloat(params.lat);
-      mapParams.zoom = parseInt(params.zoom || 5);
-      mapParams.object_zoom = false;
+    } else if (params.bbox) {
+      var bbox = params.bbox.split(',');
+      mapParams.bounds = L.latLngBounds(
+        [parseFloat(bbox[1]), parseFloat(bbox[0])],
+        [parseFloat(bbox[3]), parseFloat(bbox[2])]);
+    } else if (params.minlon && params.minlat && params.maxlon && params.maxlat) {
+      mapParams.bounds = L.latLngBounds(
+        [parseFloat(params.minlat), parseFloat(params.minlon)],
+        [parseFloat(params.maxlat), parseFloat(params.maxlon)]);
     } else if (params.mlon && params.mlat) {
       mapParams.lon = parseFloat(params.mlon);
       mapParams.lat = parseFloat(params.mlat);
       mapParams.zoom = parseInt(params.zoom || 12);
-      mapParams.object_zoom = false;
     } else if (loc = $.cookie('_osm_location')) {
       loc = loc.split("|");
       mapParams.lon = parseFloat(loc[0]);
@@ -119,12 +108,29 @@ OSM = {
   },
 
   parseHash: function(hash) {
-    if (hash.indexOf('#') === 0) {
-      hash = hash.substr(1);
+    var args = {};
+
+    var i = hash.indexOf('#');
+    if (i < 0) {
+      return args;
+    }
+
+    hash = querystring.parse(hash.substr(i + 1));
+
+    var map = (hash.map || '').split('/'),
+      zoom = parseInt(map[0], 10),
+      lat = parseFloat(map[1]),
+      lon = parseFloat(map[2]);
+
+    if (!isNaN(zoom) && !isNaN(lat) && !isNaN(lon)) {
+      args.center = new L.LatLng(lat, lon);
+      args.zoom = zoom;
     }
-    hash = querystring.parse(hash);
-    var args = L.Hash.parseHash(hash.map || '') || {};
-    if (hash.layers) args.layers = hash.layers;
+
+    if (hash.layers) {
+      args.layers = hash.layers;
+    }
+
     return args;
   },
 
@@ -136,7 +142,7 @@ OSM = {
       zoom = args.getZoom();
       layers = args.getLayersCode();
     } else {
-      center = L.latLng(args.lat, args.lon);
+      center = args.center || L.latLng(args.lat, args.lon);
       zoom = args.zoom;
       layers = args.layers || '';
     }
@@ -144,7 +150,7 @@ OSM = {
     center = center.wrap();
     layers = layers.replace('M', '');
 
-    var precision = zoomPrecision(zoom),
+    var precision = OSM.zoomPrecision(zoom),
       hash = '#map=' + zoom +
         '/' + center.lat.toFixed(precision) +
         '/' + center.lng.toFixed(precision);
@@ -154,5 +160,31 @@ OSM = {
     }
 
     return hash;
+  },
+
+  zoomPrecision: function(zoom) {
+    return Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2));
+  },
+
+  locationCookie: function(map) {
+    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)
+      ));
   }
 };