initial commit

js/router/BRouter.js

@@ -0,0 +1,104 @@
+L.BRouter = L.Class.extend({
+    statics: {
+        // http://localhost:17777/brouter?lonlats=1.1,1.2|2.1,2.2|3.1,3.2|4.1,4.2&nogos=-1.1,-1.2,1|-2.1,-2.2,2&profile=shortest&alternativeidx=1&format=kml
+        URL_TEMPLATE: 'http://localhost:17777/brouter?lonlats={lonlats}&nogos={nogos}&profile={profile}&alternativeidx={alternativeidx}&format={format}',
+        PRECISION: 6,
+        NUMBER_SEPARATOR: ',',
+        GROUP_SEPARATOR: '|'
+    },
+    
+    options: {
+        format: 'gpx'
+    },
+
+    initialize: function (options) {
+        L.setOptions(this, options);
+    },
+
+    setOptions: function(options) {
+        L.setOptions(this, options);
+    },
+
+    getUrl: function(latLngs, format) {
+        var urlParams = {
+            lonlats: this._getLonLatsString(latLngs),
+            nogos: this._getNogosString(this.options.nogos),
+            profile: this.options.profile,
+            alternativeidx: this.options.alternative,
+            format: format || this.options.format
+        };
+        var url = L.Util.template(L.BRouter.URL_TEMPLATE, urlParams);
+        return url;
+    },
+
+    getRoute: function(latLngs, cb) {
+        var url = this.getUrl(latLngs);
+        if (!url) {
+            return cb(new Error('Error getting route URL'));
+        }
+
+        var gpxLayer = new L.GPX(url, {
+            async: true,
+            polyline_options: {
+                opacity: 0.6
+            },
+            marker_options: {
+                startIconUrl: null,
+                endIconUrl: null
+            }
+        }).on('loaded', function(e) {
+            // leaflet.spin
+            gpxLayer.fire('data:loaded');
+            var gpx = e.target;
+           
+            return cb(null, gpx.getLayers()[0]);
+        })/* TODO no error handling in leaflet-gpx
+          .on('error', function(e){
+            console.error('error');
+            gpxLayer.fire('data:loaded');
+            return cb(new Error('Routing failed'));
+        })*/;
+    },
+
+    getRouteSegment: function(l1, l2, cb) {
+        return this.getRoute([l1, l2], cb);
+    },
+
+    _getLonLatsString: function(latLngs) {
+        var s = '';
+        for (var i = 0; i < latLngs.length; i++) {
+            s += this._formatLatLng(latLngs[i]);
+            if (i < (latLngs.length - 1)) {
+                s += L.BRouter.GROUP_SEPARATOR;
+            }
+        }
+        return s;
+    },
+    
+    _getNogosString: function(nogos) {
+        var s = '';
+        for (var i = 0, circle; i < nogos.length; i++) {
+            circle = nogos[i];
+            s += this._formatLatLng(circle.getLatLng());
+            s += L.BRouter.NUMBER_SEPARATOR;
+            s += Math.round(circle.getRadius());
+            if (i < (nogos.length - 1)) {
+                s += L.BRouter.GROUP_SEPARATOR;
+            }
+        }
+        return s;
+    },
+
+    // formats L.LatLng object as lng,lat string
+    _formatLatLng: function(latLng) {
+        var s = '';
+        s += L.Util.formatNum(latLng.lng, L.BRouter.PRECISION);
+        s += L.BRouter.NUMBER_SEPARATOR;
+        s += L.Util.formatNum(latLng.lat, L.BRouter.PRECISION);
+        return s;
+    }
+});
+
+L.bRouter = function (options) {
+    return new L.BRouter(options);
+};