feat: sort places by distance

2025-04-21 12:03:28 +02:00
parent f0ff8581da
commit ba9e37bad2
6 changed files with 198 additions and 7 deletions
@@ -0,0 +1,30 @@
+import 'dart:math';
+
+// Add method to calculate distance between two LatLng points using Haversine formula
+double calculateDistance(
+  double? latitude1,
+  double? longitude1,
+  double? latitude2,
+  double? longitude2,
+) {
+  if (latitude1 == null ||
+      longitude1 == null ||
+      latitude2 == null ||
+      longitude2 == null) {
+    return double.maxFinite;
+  }
+
+  const int earthRadius = 6371; // Earth's radius in kilometers
+  final double lat1 = latitude1 * (pi / 180);
+  final double lat2 = latitude2 * (pi / 180);
+  final double lon1 = longitude1 * (pi / 180);
+  final double lon2 = longitude2 * (pi / 180);
+
+  final double dLat = lat2 - lat1;
+  final double dLon = lon2 - lon1;
+
+  final double a =
+      pow(sin(dLat / 2), 2) + cos(lat1) * cos(lat2) * pow(sin(dLon / 2), 2);
+  final double c = 2 * atan2(sqrt(a), sqrt(1 - a));
+  return earthRadius * c;
+}