Fix several issues, attemt to fix zooming issue

projects/common-map/src/fm-map/services/device-orientation.service.ts

@@ -40,7 +40,10 @@ export class DeviceOrientationService {
   getCurrentCompassHeading(): Observable<number> {
     return Observable.create((observer: Observer<number>) => {  
         window.addEventListener("deviceorientation", (event:DeviceOrientationEvent)=>{
-          observer.next(this.compassHeading(event.alpha,event.beta,event.gamma));
+          let heading = this.compassHeading(event.alpha,event.beta,event.gamma);
+          if(!Number.isNaN(heading)) {
+            observer.next(heading);
+          }
         } );
     });
   }

projects/common-map/src/fm-map/services/geolocation.service.ts

@@ -1,39 +1,39 @@
-import { Injectable } from '@angular/core';
-import { Observer, Observable } from 'rxjs';
-
-/**
- * GeolocationService class.
- * https://developers.google.com/maps/documentation/javascript/
- * https://dev.w3.org/geo/api/spec-source.html
- */
-@Injectable()
-export class GeolocationService {
-
-  /**
-   * Tries HTML5 geolocation.
-   *
-   * Wraps the Geolocation API into an observable.
-   *
-   * @return An observable of Position
-   */
-  getCurrentPosition(): Observable<Position> {
-    return Observable.create((observer: Observer<Position>) => {
-      // Invokes getCurrentPosition method of Geolocation API.
-      navigator.geolocation.watchPosition(
-        (position: Position) => {
-          observer.next(position);
-        },
-        (error: PositionError) => {
-          console.debug('Geolocation service: ' + error.message);
-          observer.error(error);
-        },
-        {
-          enableHighAccuracy: true,
-          timeout: 5000,
-          maximumAge: 0
-        }
-      );
-    });
-  }
-
-}
+import { Injectable } from '@angular/core';
+import { Observer, Observable } from 'rxjs';
+
+/**
+ * GeolocationService class.
+ * https://developers.google.com/maps/documentation/javascript/
+ * https://dev.w3.org/geo/api/spec-source.html
+ */
+@Injectable()
+export class GeolocationService {
+
+  /**
+   * Tries HTML5 geolocation.
+   *
+   * Wraps the Geolocation API into an observable.
+   *
+   * @return An observable of Position
+   */
+  getCurrentPosition(): Observable<Position> {
+    return Observable.create((observer: Observer<Position>) => {
+      // Invokes getCurrentPosition method of Geolocation API.
+      navigator.geolocation.watchPosition(
+        (position: Position) => {
+          observer.next(position);
+        },
+        (error: PositionError) => {
+          console.debug('Geolocation service: ' + error.message);
+          //observer.error(error);
+        },
+        {
+          enableHighAccuracy: true,
+          timeout: 5000,
+          maximumAge: 0
+        }
+      );
+    });
+  }
+
+}