From 57b8d31119e351b15ffbf90e7f133de7f2818081 Mon Sep 17 00:00:00 2001
From: Jacek Kowalski <Jacek@jacekk.info>
Date: Sat, 15 Apr 2017 15:40:27 +0000
Subject: [PATCH] Add map showing tram location
---
map.js | 315 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 315 insertions(+), 0 deletions(-)
diff --git a/map.js b/map.js
new file mode 100644
index 0000000..34493f9
--- /dev/null
+++ b/map.js
@@ -0,0 +1,315 @@
+//var ttss_base = 'http://www.ttss.krakow.pl/internetservice';
+var ttss_base = '/proxy.php';
+var ttss_refresh = 5000; // 5 seconds
+
+var vehicles_xhr = null;
+var vehicles_timer = null;
+var vehicles_last_update = 0;
+var vehicles_source = null;
+var vehicles_layer = null;
+
+var stops_xhr = null;
+var stops_source = null;
+var stops_layer = null;
+var stop_points_source = null;
+var stop_points_layer = null;
+
+var map = null;
+var popup_feature_id = null;
+var popup_element = document.getElementById('popup');
+var popup = null;
+var fail_element = document.getElementById('fail');
+
+function fail(msg) {
+ console.log(msg);
+
+ setText(fail_element, msg);
+ fail_element.style.top = '0.5em';
+}
+
+function fail_ajax(data) {
+ // abort() is not a failure
+ if(data.readyState == 0 && data.statusText == 'abort') return;
+
+ if(data.status == 0) {
+ fail(lang.error_request_failed_connectivity, data);
+ } else if (data.statusText) {
+ fail(lang.error_request_failed_status.replace('$status', data.statusText), data);
+ } else {
+ fail(lang.error_request_failed, data);
+ }
+}
+
+function popupHide() {
+ popup.setPosition(undefined);
+ popup_feature_id = null;
+}
+
+function popupShow(coordinates, id) {
+ popup.setPosition(coordinates);
+ if(id) {
+ popup_feature_id = id;
+ }
+}
+
+function getGeometry(object) {
+ return new ol.geom.Point(ol.proj.fromLonLat([object.longitude / 3600000.0, object.latitude / 3600000.0]))
+}
+
+function updateVehicles() {
+ if(vehicles_timer) clearTimeout(vehicles_timer);
+ if(vehicles_xhr) vehicles_xhr.abort();
+
+ vehicles_xhr = $.get(
+ ttss_base + '/geoserviceDispatcher/services/vehicleinfo/vehicles'
+ + '?positionType=CORRECTED'
+ + '&colorType=ROUTE_BASED'
+ + '&lastUpdate=' + encodeURIComponent(vehicles_last_update)
+ ).done(function(data) {
+ vehicles_last_update = data.lastUpdate;
+
+ for(var i = 0; i < data.vehicles.length; i++) {
+ var vehicle = data.vehicles[i];
+
+ var vehicle_feature = vehicles_source.getFeatureById('v' + vehicle.id);
+ if(vehicle.isDeleted) {
+ if(vehicle_feature) {
+ vehicles_source.removeFeature(vehicle_feature);
+ if(popup_feature_id == vehicle_feature.getId()) {
+ popupHide();
+ }
+ }
+ continue;
+ }
+
+ var vehicle_name_space = vehicle.name.indexOf(' ');
+ vehicle.line = vehicle.name.substr(0, vehicle_name_space);
+ vehicle.direction = vehicle.name.substr(vehicle_name_space+1);
+ if(special_directions[vehicle.direction]) {
+ vehicle.line = special_directions[vehicle.direction];
+ }
+
+ vehicle.geometry = getGeometry(vehicle);
+ vehicle.vehicle_type = parseVehicle(vehicle.id);
+
+ if(!vehicle_feature) {
+ vehicle_feature = new ol.Feature(vehicle);
+ vehicle_feature.setId('v' + vehicle.id);
+
+ var color_type = 'black';
+ if(vehicle.vehicle_type) {
+ switch(vehicle.vehicle_type.low) {
+ case 0:
+ color_type = 'orange';
+ break;
+ case 1:
+ color_type = 'blue';
+ break;
+ case 2:
+ color_type = 'green';
+ break;
+ }
+ }
+
+ vehicle_feature.setStyle(new ol.style.Style({
+ image: new ol.style.RegularShape({
+ fill: new ol.style.Fill({color: '#3399ff'}),
+ stroke: new ol.style.Stroke({color: color_type, width: 2}),
+ points: 3,
+ radius: 12,
+ rotation: Math.PI * parseFloat(vehicle.heading) / 180.0,
+ rotateWithView: true,
+ angle: 0
+ }),
+ text: new ol.style.Text({
+ font: 'bold 10px sans-serif',
+ text: vehicle.line,
+ fill: new ol.style.Fill({color: 'white'}),
+ }),
+ }));
+ vehicles_source.addFeature(vehicle_feature);
+ } else {
+ vehicle_feature.setProperties(vehicle);
+ vehicle_feature.getStyle().getImage().setRotation(Math.PI * parseFloat(vehicle.heading) / 180.0);
+
+ if(popup_feature_id == vehicle_feature.getId()) {
+ popupShow(vehicle_feature.getGeometry().getCoordinates());
+ }
+ }
+ }
+
+ vehicles_timer = setTimeout(function() {
+ updateVehicles();
+ }, ttss_refresh);
+ }).fail(fail_ajax);
+}
+
+function updateStopSource(stops, prefix, source) {
+ source.clear();
+
+ for(var i = 0; i < stops.length; i++) {
+ var stop = stops[i];
+ stop.geometry = getGeometry(stop);
+ var stop_feature = new ol.Feature(stop);
+
+ stop_feature.setId(prefix + stop.id);
+ stop_feature.setStyle(new ol.style.Style({
+ image: new ol.style.Circle({
+ fill: new ol.style.Fill({color: 'orange'}),
+ stroke: new ol.style.Stroke({color: 'red', width: 1}),
+ radius: 3,
+ }),
+ }));
+
+ source.addFeature(stop_feature);
+ }
+}
+
+function updateStops() {
+ $.get(
+ ttss_base + '/geoserviceDispatcher/services/stopinfo/stops'
+ + '?left=-648000000'
+ + '&bottom=-324000000'
+ + '&right=648000000'
+ + '&top=324000000'
+ ).done(function(data) {
+ updateStopSource(data.stops, 's', stops_source);
+ }).fail(fail_ajax);
+}
+
+function updateStopPoints() {
+ $.get(
+ ttss_base + '/geoserviceDispatcher/services/stopinfo/stopPoints'
+ + '?left=-648000000'
+ + '&bottom=-324000000'
+ + '&right=648000000'
+ + '&top=324000000'
+ ).done(function(data) {
+ updateStopSource(data.stopPoints, 'p', stop_points_source);
+ }).fail(fail_ajax);
+}
+
+function init() {
+ if(!window.jQuery) {
+ fail(lang.jquery_not_loaded);
+ return;
+ }
+
+ $.ajaxSetup({
+ dataType: 'json',
+ timeout: 10000,
+ });
+
+ stops_source = new ol.source.Vector({
+ features: [],
+ });
+ stops_layer = new ol.layer.Vector({
+ source: stops_source,
+ });
+
+ stop_points_source = new ol.source.Vector({
+ features: [],
+ });
+ stop_points_layer = new ol.layer.Vector({
+ source: stop_points_source,
+ visible: false,
+ });
+
+ vehicles_source = new ol.source.Vector({
+ features: [],
+ });
+ vehicles_layer = new ol.layer.Vector({
+ source: vehicles_source,
+ });
+
+ popup = new ol.Overlay({
+ element: popup_element,
+ positioning: 'bottom-center',
+ stopEvent: false,
+ offset: [0, -12]
+ });
+
+ map = new ol.Map({
+ target: 'map',
+ layers: [
+ new ol.layer.Tile({
+ source: new ol.source.OSM()
+ }),
+ stops_layer,
+ stop_points_layer,
+ vehicles_layer,
+ ],
+ overlays: [popup],
+ view: new ol.View({
+ center: ol.proj.fromLonLat([19.94, 50.06]),
+ zoom: 13
+ }),
+ controls: ol.control.defaults({
+ attributionOptions: ({
+ collapsible: false,
+ })
+ }).extend([
+ new ol.control.Control({
+ element: document.getElementById('title'),
+ }),
+ new ol.control.Control({
+ element: fail_element,
+ })
+ ]),
+ });
+
+ // Display popup on click
+ map.on('singleclick', function(e) {
+ var feature = map.forEachFeatureAtPixel(e.pixel, function(feature) { return feature; });
+ if(feature) {
+ var coordinates = feature.getGeometry().getCoordinates();
+
+ deleteChildren(popup_element);
+
+ addParaWithText(popup_element, feature.get('name')).className = 'bold';
+ switch(feature.getId().substr(0, 1)) {
+ case 'v':
+ var vehicle_type = parseVehicle(feature.get('id'));
+ if(vehicle_type) {
+ addParaWithText(popup_element, vehicle_type.num + ' ' + vehicle_type.type);
+ }
+ break;
+ }
+
+ popupShow(coordinates, feature.getId());
+ } else {
+ popupHide();
+ }
+ });
+
+ // Change mouse cursor when over marker
+ map.on('pointermove', function(e) {
+ var hit = map.hasFeatureAtPixel(e.pixel);
+ var target = map.getTargetElement();
+ target.style.cursor = hit ? 'pointer' : '';
+ });
+
+ // Change layer visibility on zoom
+ map.getView().on('change:resolution', function(e) {
+ if(map.getView().getZoom() >= 16) {
+ stops_layer.setVisible(false);
+ stop_points_layer.setVisible(true);
+ } else {
+ stops_layer.setVisible(true);
+ stop_points_layer.setVisible(false);
+ }
+ });
+
+ updateVehicles();
+ updateStops();
+ updateStopPoints();
+
+ setTimeout(function() {
+ if(vehicles_xhr) vehicles_xhr.abort();
+ if(vehicles_timer) clearTimeout(vehicles_timer);
+
+ fail(lang.error_refresh);
+ }, 1800000);
+}
+
+init();
--
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