helps with load speed and number of connection refused messages

lib/models/osm_camera_node.dart

@@ -11,8 +11,12 @@ class OsmCameraNode {
     required this.tags,
   });
 
-  bool get hasDirection => tags.containsKey('direction');
-  double? get directionDeg =>
-      hasDirection ? double.tryParse(tags['direction']!) : null;
+  bool get hasDirection =>
+      tags.containsKey('direction') || tags.containsKey('camera:direction');
+
+  double? get directionDeg {
+    final val = tags['direction'] ?? tags['camera:direction'];
+    return double.tryParse(val ?? '');
+  }
 }
 

lib/services/overpass_service.dart

@@ -1,8 +1,7 @@
 import 'dart:convert';
-
 import 'package:http/http.dart' as http;
-import 'package:flutter_map/flutter_map.dart';   // LatLngBounds
-import 'package:latlong2/latlong.dart';         // LatLng
+import 'package:flutter_map/flutter_map.dart';
+import 'package:latlong2/latlong.dart';
 
 import '../models/camera_profile.dart';
 import '../models/osm_camera_node.dart';
@@ -16,7 +15,7 @@ class OverpassService {
   ) async {
     if (profiles.isEmpty) return [];
 
-    // Combine enabled profile types into a regex
+    // Build regex of surveillance:type values from enabled profiles
     final types = profiles
         .map((p) => p.tags['surveillance:type'])
         .whereType<String>()
@@ -35,20 +34,25 @@ class OverpassService {
       out body 100;
     ''';
 
-    final resp =
-        await http.post(Uri.parse(_endpoint), body: {'data': query.trim()});
-    if (resp.statusCode != 200) return [];
+    try {
+      final resp =
+          await http.post(Uri.parse(_endpoint), body: {'data': query.trim()});
+      if (resp.statusCode != 200) return [];
 
-    final data = jsonDecode(resp.body) as Map<String, dynamic>;
-    final elements = data['elements'] as List<dynamic>;
+      final data = jsonDecode(resp.body) as Map<String, dynamic>;
+      final elements = data['elements'] as List<dynamic>;
 
-    return elements.whereType<Map<String, dynamic>>().map((e) {
-      return OsmCameraNode(
-        id: e['id'],
-        coord: LatLng(e['lat'], e['lon']),
-        tags: Map<String, String>.from(e['tags'] ?? {}),
-      );
-    }).toList();
+      return elements.whereType<Map<String, dynamic>>().map((e) {
+        return OsmCameraNode(
+          id: e['id'],
+          coord: LatLng(e['lat'], e['lon']),
+          tags: Map<String, String>.from(e['tags'] ?? {}),
+        );
+      }).toList();
+    } catch (_) {
+      // Network error – return empty list silently
+      return [];
+    }
   }
 }
 

lib/widgets/map_view.dart

@@ -73,15 +73,29 @@ class _MapViewState extends State<MapView> {
   }
 
   Future<void> _refreshCameras(AppState appState) async {
-    final bounds = _controller.camera.visibleBounds;
+    LatLngBounds? bounds;
+    try {
+      bounds = _controller.camera.visibleBounds;
+    } catch (_) {
+      return; // controller not ready yet
+    }
     final cams = await _overpass.fetchCameras(bounds, appState.enabledProfiles);
     if (mounted) setState(() => _cameras = cams);
   }
 
+  double _safeZoom() {
+    try {
+      return _controller.camera.zoom;
+    } catch (_) {
+      return 15.0;
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     final appState = context.watch<AppState>();
     final session = appState.session;
+    final zoom = _safeZoom();
 
     final markers = <Marker>[
       if (_currentLatLng != null)
@@ -103,12 +117,10 @@ class _MapViewState extends State<MapView> {
 
     final overlays = <Polygon>[
       if (session != null && session.target != null)
-        _buildCone(session.target!, session.directionDegrees),
+        _buildCone(session.target!, session.directionDegrees, zoom),
       ..._cameras
-          .where((n) => n.hasDirection)
-          .map(
-            (n) => _buildCone(n.coord, n.directionDeg!),
-          ),
+          .where((n) => n.hasDirection && n.directionDeg != null)
+          .map((n) => _buildCone(n.coord, n.directionDeg!, zoom)),
     ];
 
     return Stack(
@@ -129,7 +141,8 @@ class _MapViewState extends State<MapView> {
           ),
           children: [
             TileLayer(
-              urlTemplate: 'https://tile.openstreetmap.org/{z}/{x}/{y}.png',
+              urlTemplate:
+                  'https://tile.openstreetmap.org/{z}/{x}/{y}.png',
               userAgentPackageName: 'com.example.flock_map_app',
             ),
             PolygonLayer(polygons: overlays),
@@ -146,9 +159,9 @@ class _MapViewState extends State<MapView> {
     );
   }
 
-  Polygon _buildCone(LatLng origin, double bearingDeg) {
+  Polygon _buildCone(LatLng origin, double bearingDeg, double zoom) {
     const halfAngle = 15.0;
-    const length = 0.08; // ~80 m
+    final length = 0.002 * math.pow(2, 15 - zoom);
 
     LatLng _project(double deg) {
       final rad = deg * math.pi / 180;

pubspec.yaml

@@ -1,7 +1,7 @@
 name: flock_map_app
-description: Simple OSM camera-mapping client
+description: Simple OSM camera‑mapping client
 publish_to: "none"
-version: 0.2.0
+version: 0.2.1
 
 environment:
   sdk: ">=3.3.0 <4.0.0"
@@ -14,7 +14,7 @@ dependencies:
   flutter_map: ^6.1.0
   latlong2: ^0.9.0
   geolocator: ^10.1.0
-  http: ^1.2.1   # <- NEW for Overpass requests
+  http: ^1.2.1
 
 dev_dependencies:
   flutter_test: