openstreetmap-website/app/assets/javascripts/osm.js.erb
2025-03-12 17:12:31 +01:00

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Text

//= depend_on settings.yml
//= depend_on settings.local.yml
//= depend_on layers.yml
//= depend_on key.yml
OSM = {
...<%=
%i[
matomo
max_request_area
server_protocol
server_url
api_version
status
max_note_request_area
overpass_url
overpass_credentials
nominatim_url
graphhopper_url
fossgis_osrm_url
fossgis_valhalla_url
thunderforest_key
tracestrack_key
]
.each_with_object({}) do |key, hash|
hash[key.to_s.upcase] = Settings.send(key) if Settings.respond_to?(key)
end.to_json
%>,
DEFAULT_LOCALE: <%= I18n.default_locale.to_json %>,
LAYER_DEFINITIONS: <%= YAML.load_file(Rails.root.join("config/layers.yml")).to_json %>,
LAYERS_WITH_MAP_KEY: <%= YAML.load_file(Rails.root.join("config/key.yml")).keys.to_json %>,
MARKER_GREEN: <%= image_path("marker-green.png").to_json %>,
MARKER_RED: <%= image_path("marker-red.png").to_json %>,
MARKER_ICON: <%= image_path("leaflet/dist/images/marker-icon.png").to_json %>,
MARKER_ICON_2X: <%= image_path("leaflet/dist/images/marker-icon-2x.png").to_json %>,
MARKER_SHADOW: <%= image_path("leaflet/dist/images/marker-shadow.png").to_json %>,
NEW_NOTE_MARKER: <%= image_path("new_note_marker.svg").to_json %>,
OPEN_NOTE_MARKER: <%= image_path("open_note_marker.svg").to_json %>,
CLOSED_NOTE_MARKER: <%= image_path("closed_note_marker.svg").to_json %>,
apiUrl: function (object) {
const apiType = object.type === "note" ? "notes" : object.type;
let url = "/api/" + OSM.API_VERSION + "/" + apiType + "/" + object.id;
if (object.type === "way" || object.type === "relation") {
url += "/full";
} else if (object.version) {
url += "/" + object.version;
}
return url;
},
params: function (search) {
const query = search || location.search;
return Object.fromEntries(new URLSearchParams(query));
},
mapParams: function (search) {
const params = OSM.params(search),
geoURI = URL.canParse(params.geouri) ? new URL(params.geouri) : {},
mapParams = {};
if (params.mlon && params.mlat) {
mapParams.marker = true;
mapParams.mlon = parseFloat(params.mlon);
mapParams.mlat = parseFloat(params.mlat);
}
if (geoURI.lon && geoURI.lat) {
mapParams.marker = true;
mapParams.mlon = parseFloat(geoURI.lon);
mapParams.mlat = parseFloat(geoURI.lat);
}
// Old-style object parameters; still in use for edit links e.g. /edit?way=1234
for (const type of ["node", "way", "relation", "note"]) {
if (params[type]) {
mapParams.object = { type, id: parseInt(params[type], 10) };
}
}
const hash = OSM.parseHash(location.hash);
const loc = Cookies.get("_osm_location")?.split("|");
function bboxToLatLngBounds({ minlon, minlat, maxlon, maxlat }) {
return L.latLngBounds([minlat, minlon], [maxlat, maxlon]);
}
// 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) {
const [minlon, minlat, maxlon, maxlat] = params.bbox.split(",");
mapParams.bounds = bboxToLatLngBounds({ minlon, minlat, maxlon, maxlat });
} else if (params.minlon && params.minlat && params.maxlon && params.maxlat) {
mapParams.bounds = bboxToLatLngBounds(params);
} else if (params.mlon && params.mlat) {
mapParams.lon = params.mlon;
mapParams.lat = params.mlat;
mapParams.zoom = params.zoom || 12;
} else if (geoURI.pathname) {
[mapParams.lat, mapParams.lon] = geoURI.pathname.split(",");
mapParams.zoom = geoURI.searchParams?.get("z") || (geoURI.pathname.replaceAll(/,?[-\d]+\./g, "").length / 0.6) - 2;
} else if (loc) {
[mapParams.lon, mapParams.lat, mapParams.zoom] = loc;
} else if (OSM.home) {
mapParams.lon = OSM.home.lon;
mapParams.lat = OSM.home.lat;
mapParams.zoom = 10;
} else if (OSM.location) {
mapParams.bounds = bboxToLatLngBounds(OSM.location);
} else {
mapParams.lon = -0.1;
mapParams.lat = 51.5;
mapParams.zoom = params.zoom || 5;
}
if (typeof mapParams.lat === "string") mapParams.lat = parseFloat(mapParams.lat);
if (typeof mapParams.lon === "string") mapParams.lon = parseFloat(mapParams.lon);
if (typeof mapParams.zoom === "string") mapParams.zoom = parseInt(mapParams.zoom, 10);
mapParams.layers = hash.layers || (loc && loc[3]) || "";
const 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) {
const args = {};
const i = hash.indexOf("#");
if (i < 0) {
return args;
}
const hashParams = new URLSearchParams(hash.slice(i + 1));
const map = (hashParams.get("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 (hashParams.has("layers")) {
args.layers = hashParams.get("layers");
}
return args;
},
formatHash: function (args) {
let 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 || "";
}
layers = layers.replace("M", "");
let hash = "#map=" + [zoom, ...OSM.cropLocation(center, zoom)].join("/");
if (layers) {
hash += "&layers=" + layers;
}
return hash;
},
zoomPrecision: function (zoom) {
const pixels = Math.pow(2, 8 + zoom);
const degrees = 180;
return Math.ceil(Math.log10(pixels / degrees));
},
cropLocation: function (latLng, zoom) {
const precision = OSM.zoomPrecision(zoom),
wrapped = latLng.wrap();
return [wrapped.lat, wrapped.lng].map(c => c.toFixed(precision));
},
locationCookie: function (map) {
const zoom = map.getZoom(),
center = OSM.cropLocation(map.getCenter(), zoom).reverse();
return [...center, zoom, map.getLayersCode()].join("|");
},
distance: function (latlng1, latlng2) {
const 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))
));
}
};