Change polygons to feature and remove hardcoded geoJSON

src/app/map/geojson.ts

@@ -1,67 +0,0 @@
-import * as G from 'geojson';
-
-// Custom GeoJSON style for the building
-export const buildingSytle = {
-  color: '#d62305', // Red border
-  weight: 2, // Border width
-  fillColor: '#d4caca', // Red fill
-  fillOpacity: 1, // Semi-transparent fill
-};
-
-// Example GeoJSON data
-export const examplePolygon: G.Polygon = {
-  type: 'Polygon',
-  coordinates: [
-    [
-      [8.3897067, 49.0149349], // Southwest corner
-      [8.3904111, 49.0149078], // Southeast corner
-      [8.3904345, 49.0151542], // Northeast corner
-      [8.3897302, 49.0151832], // Northwest corner
-      [8.3897067, 49.0149349], // Closing the polygon by repeating the first point
-    ],
-  ],
-};
-
-export const buildings: G.FeatureCollection = {
-  type: 'FeatureCollection',
-  features: [
-    {
-      type: 'Feature',
-      properties: {
-        name: 'E',
-        building: 'university',
-      },
-      geometry: {
-        type: 'Polygon',
-        coordinates: [
-          [
-            [8.3897067, 49.0149349], // Southwest corner
-            [8.3904111, 49.0149078], // Southeast corner
-            [8.3904345, 49.0151542], // Northeast corner
-            [8.3897302, 49.0151832], // Northwest corner
-            [8.3897067, 49.0149349], // Closing the polygon by repeating the first point
-          ],
-        ],
-      },
-    },
-    {
-      type: 'Feature',
-      properties: {
-        name: 'F',
-        building: 'university',
-      },
-      geometry: {
-        type: 'Polygon',
-        coordinates: [
-          [
-            [8.3897585, 49.015502], // Southwest corner
-            [8.3904592, 49.0154731], // Southeast corner
-            [8.3904833, 49.0157255], // Northeast corner
-            [8.3897827, 49.0157543], // Northwest corner
-            [8.3897585, 49.015502], // Closing the polygon by repeating the first point
-          ],
-        ],
-      },
-    },
-  ],
-};

src/app/map/map.ts

@@ -4,9 +4,9 @@ import { LeafletModule } from '@bluehalo/ngx-leaflet';
 import { center } from '@turf/turf';
 import { Overpass } from '../overpass';
 import * as L from 'leaflet';
+import * as G from 'geojson';
 
 import * as D from './details';
-import * as E from './geojson';
 
 @Component({
   selector: 'app-map',
@@ -29,7 +29,7 @@ export class OSMMap implements OnInit {
 
   constructor(
     private overpass: Overpass,
-    private cdr: ChangeDetectorRef
+    private cdr: ChangeDetectorRef,
   ) {}
 
   ngOnInit() {
@@ -45,11 +45,6 @@ export class OSMMap implements OnInit {
       layers: [this.osm],
       zoom: 18, // Zoom level
       center: this.getCenter(), // Center of the map
-      maxBounds: L.latLngBounds(
-        L.latLng(49.014442, 8.387954), // Southwest corner
-        L.latLng(49.017847, 8.395448), // Northeast corner
-      ),
-      maxBoundsViscosity: 1.0, // Prevent panning outside bounds
     };
 
     this.layerControl = L.control.layers({
@@ -60,73 +55,71 @@ export class OSMMap implements OnInit {
   onMapReady(map: L.Map) {
     this.map = map;
     this.layerControl?.addTo(this.map);
-    this.loadBuildings().addTo(this.map);
+    this.queryBuildingData().addTo(this.map);
     console.log('Map is ready');
   }
 
-  loadBuildings() {
+  queryBuildingData() {
-    return L.geoJSON(E.buildings, {
+    // Query the Overpass API for building data and add it to the map as a GeoJSON layer.
-      style: E.buildingSytle,
+
-      onEachFeature: (feature, layer) => {
+    const buildingLayer = new L.LayerGroup();
-        layer.on({
+
-          click: (e) => {
+    this.overpass.fetchBuildingData().subscribe((data) => {
-            this.isFullscreen = !this.isFullscreen;
+      console.log('Received building data:', data);
-            if (!this.isFullscreen) {
+      L.geoJSON(this.createFeatureCollection(data), {
-              this.map?.setView(this.getCenter(feature.geometry), 20);
+        style: { color: '#d62305', weight: 2, fillColor: '#d4caca', fillOpacity: 1 },
-              this.buildingLayer = this.queryBuildings(feature.properties.name);
+        onEachFeature: (feature, layer) => {
-              this.buildingLayer.addTo(this.map!);
+          layer.on({
-              this.details = new D.Details(feature.properties.name, feature.properties.building)
+            click: (e) => {
-            } else {
+              this.isFullscreen = !this.isFullscreen;
-              this.map?.setView(this.getCenter(), 18);
+              if (!this.isFullscreen) {
-              if (this.buildingLayer) {
+                this.map?.setView(this.getCenter(feature.geometry), 20);
-                this.map?.removeLayer(this.buildingLayer);
+                this.buildingLayer = this.queryIndoorData(feature.properties.name);
+                this.buildingLayer.addTo(this.map!);
+                this.details = new D.Details(feature.properties.name, feature.properties.building);
+              } else {
+                this.map?.setView(this.getCenter(), 18);
+                if (this.buildingLayer) {
+                  this.map?.removeLayer(this.buildingLayer);
+                }
               }
-            }
+              console.log('Set isFullscreen to:', this.isFullscreen);
-            console.log('Set isFullscreen to:', this.isFullscreen);
+              console.log('Clicked on feature:', feature.properties?.name);
-            console.log('Clicked on feature:', feature.properties?.name);
+              this.cdr.detectChanges();
-            this.cdr.detectChanges();
+            },
-          },
-        });
-        if (feature.properties && feature.properties.name) {
-          layer.bindTooltip(feature.properties.name, {
-            permanent: false,
-            direction: 'top',
           });
-        }
+          if (feature.properties && feature.properties.name) {
-      },
+            layer.bindTooltip(feature.properties.name, {
+              permanent: false,
+              direction: 'top',
+            });
+          }
+        },
+      }).addTo(buildingLayer);
     });
+    return buildingLayer;
   }
 
-  queryBuildings(building_name: string) {
+  queryIndoorData(building_name: string): L.LayerGroup {
     // Get the building name from the feature properties and query the Overpass API for detailed building data,
     // including indoor features.
 
     // Create a new LayerGroup to hold the building polygons
     const resultingLayer = new L.LayerGroup();
-    this.overpass.fetchBuildings(building_name).subscribe((data) => {
-      console.log('Fetched building data from Overpass API:', data);
 
-      // Create a mapping of node IDs to their coordinates
+    this.overpass.fetchIndoorData(building_name).subscribe((data) => {
-      const nodes: Map<number, L.LatLng> = new Map();
+      console.log('Received indoor data for building:', building_name, data);
-      data.elements.forEach((element: any) => {
+      L.geoJSON(this.createFeatureCollection(data), {
-        if (element.type === 'node') {
+        style: { color: '#999999', fillColor: '#e0e0e0', fillOpacity: 1 },
-          nodes.set(element.id, new L.LatLng(element.lat, element.lon));
+        onEachFeature: (feature, layer) => {
-        }
+          if (feature.properties) {
-      });
+            layer.bindTooltip(feature.properties.ref ?? 'Test', {
-
+              permanent: false,
-      // Process ways and create polygons
+              direction: 'top',
-      // TODO: Change to features, to also add the meta data of the building, e.g. the name of the room
+            });
-      data.elements.forEach((element: any) => {
+          }
-        if (element.type === 'way') {
+        },
-          const coordinates: L.LatLng[] = [];
+      }).addTo(resultingLayer);
-          element.nodes.forEach((nodeId: number) => {
-            coordinates.push(nodes.get(nodeId)!);
-          });
-          L.polygon(coordinates, { color: '#999999', fillColor: '#e0e0e0', fillOpacity: 1 }).addTo(
-            resultingLayer,
-          );
-        }
-      });
     });
     return resultingLayer;
   }
@@ -142,4 +135,46 @@ export class OSMMap implements OnInit {
     const result = new L.LatLng(centerPoint[0], centerPoint[1]);
     return result;
   }
+
+  private createFeatureCollection(data: any): G.FeatureCollection {
+    const buildingData: G.FeatureCollection = {
+      type: 'FeatureCollection',
+      features: [],
+    };
+
+    // Create a mapping of node IDs to their coordinates
+    const nodes: Map<number, L.LatLng> = new Map();
+    data.elements.forEach((element: any) => {
+      if (element.type === 'node') {
+        nodes.set(element.id, new L.LatLng(element.lat, element.lon));
+      }
+    });
+
+    // Process ways and create polygons
+    // TODO: Change to features, to also add the meta data of the building, e.g. the name of the room
+    data.elements.forEach((element: any) => {
+      if (element.type === 'way') {
+        const coordinates: L.LatLng[] = [];
+        element.nodes.forEach((nodeId: number) => {
+          coordinates.push(nodes.get(nodeId)!);
+        });
+        buildingData.features.push(
+          this.createFeature(new Map(Object.entries(element.tags || {})), coordinates),
+          // this.createFeature(new Map(Object.entries({ name: 'Test' })), coordinates),
+        );
+      }
+    });
+    return buildingData;
+  }
+
+  private createFeature(properties: Map<string, string>, coordinates: L.LatLng[]): G.Feature {
+    return {
+      type: 'Feature',
+      properties: Object.fromEntries(properties),
+      geometry: {
+        type: 'Polygon',
+        coordinates: [coordinates.map((coord) => [coord.lng, coord.lat])],
+      },
+    };
+  }
 }

src/app/overpass.ts

@@ -28,11 +28,11 @@ export class Overpass {
 
   constructor(private http: HttpClient) {}
 
-  fetchBuildings(building_name: string) {
+  fetchIndoorData(building_name: string) {
     const header = { 'Content-Type': 'text/plain' };
     const query = `
-      [out:json][timeout:25];
+      [out:json][timeout:90];
-      nwr["building"]["operator"="Hochschule Karlsruhe"]["name"="${building_name}"](49.014442, 8.387954, 49.017847, 8.395448)->.building;
+      nwr["building"]["operator"="Hochschule Karlsruhe"]["name"="${building_name}"]->.building;
       (
         nwr["indoor"="room"](area.building);
       );
@@ -42,4 +42,17 @@ export class Overpass {
 
     return this.http.post<OverpassResponse>(this.apiUrl, query, { headers: header });
   }
+
+  fetchBuildingData() {
+    const header = { 'Content-Type': 'text/plain' };
+    const query = `
+      [out:json][timeout:90];
+      (
+        way["building"="university"]["operator"="Hochschule Karlsruhe"];
+      );
+      (._;>;);
+      out body;
+    `;
+    return this.http.post<OverpassResponse>(this.apiUrl, query, { headers: header });
+  }
 }