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tile fetching and caching much improved

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stopflock
2025-08-23 18:08:25 -05:00
parent a21e807d88
commit 722e640a72
2 changed files with 28 additions and 41 deletions
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lib/widgets/map_view.dart
+7 -28
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@@ -1,5 +1,4 @@
import 'dart:async';
import 'dart:math' as math;
import 'package:flutter/material.dart';
import 'package:flutter_map/flutter_map.dart';
import 'package:latlong2/latlong.dart';
@@ -50,9 +49,8 @@ class _MapViewState extends State<MapView> {
// Track profile changes to trigger camera refresh
List<CameraProfile>? _lastEnabledProfiles;
// Track map position to only clear queue on significant changes
// Track zoom to clear queue on zoom changes
double? _lastZoom;
LatLng? _lastCenter;
@override
void initState() {
@@ -164,18 +162,7 @@ class _MapViewState extends State<MapView> {
return ids1.length == ids2.length && ids1.containsAll(ids2);
}
/// Calculate approximate distance between two LatLng points in meters
double _distanceInMeters(LatLng point1, LatLng point2) {
const double earthRadius = 6371000; // Earth radius in meters
final dLat = (point2.latitude - point1.latitude) * (3.14159 / 180);
final dLon = (point2.longitude - point1.longitude) * (3.14159 / 180);
final a = math.sin(dLat / 2) * math.sin(dLat / 2) +
math.cos(point1.latitude * (3.14159 / 180)) *
math.cos(point2.latitude * (3.14159 / 180)) *
math.sin(dLon / 2) * math.sin(dLon / 2);
final c = 2 * math.atan2(math.sqrt(a), math.sqrt(1 - a));
return earthRadius * c;
}
@override
Widget build(BuildContext context) {
@@ -257,25 +244,17 @@ class _MapViewState extends State<MapView> {
appState.updateSession(target: pos.center);
}
// TODO: Re-enable smart queue clearing once we debug tile loading issues
// For now, let flutter_map handle its own request management
/*
// Only clear tile queue on significant movement changes
// Only clear tile queue on significant ZOOM changes (not panning)
final currentZoom = pos.zoom;
final currentCenter = pos.center;
final zoomChanged = _lastZoom == null || (currentZoom - _lastZoom!).abs() > 0.1;
final centerChanged = _lastCenter == null ||
_distanceInMeters(_lastCenter!, currentCenter) > 100; // 100m threshold
final zoomChanged = _lastZoom != null && (currentZoom - _lastZoom!).abs() > 0.5;
if (zoomChanged || centerChanged) {
if (zoomChanged) {
_tileDebounce(() {
debugPrint('[MapView] Significant map change - clearing stale tile requests');
debugPrint('[MapView] Zoom change detected - clearing stale tile requests');
_tileHttpClient.clearTileQueue();
});
_lastZoom = currentZoom;
_lastCenter = currentCenter;
}
*/
_lastZoom = currentZoom;
// Request more cameras on any map movement/zoom at valid zoom level (slower debounce)
if (pos.zoom >= 10) {