OSM = { <% if defined?(PIWIK) %> PIWIK: <%= PIWIK.to_json %>, <% end %> MAX_REQUEST_AREA: <%= MAX_REQUEST_AREA.to_json %>, SERVER_URL: <%= SERVER_URL.to_json %>, API_VERSION: <%= API_VERSION.to_json %>, STATUS: <%= STATUS.to_json %>, MAX_NOTE_REQUEST_AREA: <%= MAX_NOTE_REQUEST_AREA.to_json %>, apiUrl: function (object) { var url = "/api/" + OSM.API_VERSION + "/" + object.type + "/" + object.id; if (object.type === "way" || object.type === "relation") { url += "/full"; } else if (object.version) { url += "/" + object.version; } return url; }, params: function(search) { var params = {}; search = (search || window.location.search).replace('?', '').split(/&|;/); for (var i = 0; i < search.length; ++i) { var pair = search[i], j = pair.indexOf('='), key = pair.slice(0, j), val = pair.slice(++j); params[key] = decodeURIComponent(val); } return params; }, mapParams: function (search) { var params = OSM.params(search), mapParams = {}, loc, match; if (params.mlon && params.mlat) { mapParams.marker = true; mapParams.mlon = parseFloat(params.mlon); mapParams.mlat = parseFloat(params.mlat); } // 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); // Decide on a map starting position. Various ways of doing this. if (hash.center) { mapParams.lon = hash.center.lng; mapParams.lat = hash.center.lat; mapParams.zoom = hash.zoom; } 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.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); mapParams.zoom = parseInt(params.zoom || 12); } else if (loc = $.cookie('_osm_location')) { loc = loc.split("|"); mapParams.lon = parseFloat(loc[0]); mapParams.lat = parseFloat(loc[1]); mapParams.zoom = parseInt(loc[2]); } else if (OSM.home) { mapParams.lon = OSM.home.lon; mapParams.lat = OSM.home.lat; mapParams.zoom = 10; } else if (OSM.location) { mapParams.bounds = L.latLngBounds( [OSM.location.minlat, OSM.location.minlon], [OSM.location.maxlat, OSM.location.maxlon]); } else { mapParams.lon = -0.1; mapParams.lat = 51.5; mapParams.zoom = parseInt(params.zoom || 5); } mapParams.layers = hash.layers || (loc && loc[3]) || ''; var scale = parseFloat(params.scale); if (scale > 0) { mapParams.zoom = Math.log(360.0 / (scale * 512.0)) / Math.log(2.0); } return mapParams; }, parseHash: function(hash) { 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; } if (hash.layers) { args.layers = hash.layers; } return args; }, formatHash: function(args) { var center, zoom, layers; if (args instanceof L.Map) { center = args.getCenter(); zoom = args.getZoom(); layers = args.getLayersCode(); } else { center = args.center || L.latLng(args.lat, args.lon); zoom = args.zoom; layers = args.layers || ''; } center = center.wrap(); layers = layers.replace('M', ''); var precision = OSM.zoomPrecision(zoom), hash = '#map=' + zoom + '/' + center.lat.toFixed(precision) + '/' + center.lng.toFixed(precision); if (layers) { hash += '&layers=' + layers; } 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('|'); } };