feat : Cluster Map

packages/inspection/lib/presentation/pages/inspection_map/logic.dart

@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:math';
 
 import 'package:flutter/material.dart';
 import 'package:rasadyar_core/core.dart';
@@ -11,12 +12,12 @@ import '../filter/view.dart';
 
 class InspectionMapLogic extends GetxController with GetTickerProviderStateMixin {
   final BaseLogic baseLogic = Get.find<BaseLogic>();
-
+  final distance = Distance();
   Rx<LatLng> currentLocation = LatLng(34.798315281272544, 48.51479142983491).obs;
   Rx<Resource<List<PoultryLocationModel>>> allPoultryLocation =
       Resource<List<PoultryLocationModel>>.loading().obs;
 
-  RxList<PoultryLocationModel> markers = <PoultryLocationModel>[].obs;
+  RxList<Marker> markers = <Marker>[].obs;
 
   Timer? _debounceTimer;
   RxBool isLoading = false.obs;
@@ -25,6 +26,7 @@ class InspectionMapLogic extends GetxController with GetTickerProviderStateMixin
   RxInt filterIndex = 0.obs;
   RxInt showIndex = 0.obs;
   bool showSlideHint = true;
+  RxInt currentZoom = 15.obs;
 
   late Rx<SlidableController> slidController;
 
@@ -114,17 +116,28 @@ class InspectionMapLogic extends GetxController with GetTickerProviderStateMixin
     isLoading.value = false;
   }
 
-  void debouncedUpdateVisibleMarkers({required LatLng center}) {
+  void debouncedUpdateVisibleMarkers({required LatLng center, required double zoom}) {
     _debounceTimer?.cancel();
     _debounceTimer = Timer(const Duration(milliseconds: 300), () {
+      var raduis = getVisibleRadiusKm(
+        zoom: zoom,
+        screenWidthPx: Get.width.toDouble(),
+        latitude: center.latitude,
+      );
       final filtered = filterNearbyMarkers(
         allPoultryLocation.value.data ?? [],
         center.latitude,
         center.longitude,
-        10000, // Radius in meters
+        raduis * 1000, // Radius in meters
+      );
+      markers.assignAll(
+        filtered.map(
+          (e) => Marker(
+            point: LatLng(e.lat ?? 0, e.long ?? 0),
+            child: Icon(Icons.location_on, color: Colors.red),
+          ),
+        ),
       );
-
-      markers.addAll(filtered);
     });
   }
 
@@ -135,11 +148,10 @@ class InspectionMapLogic extends GetxController with GetTickerProviderStateMixin
     double radiusInMeters,
   ) {
     final center = LatLng(centerLat, centerLng);
-    final distance = Distance();
 
     return allMarkers.where((marker) {
-      var tmp =LatLng(marker.lat ?? 0, marker.long ?? 0);
-      return distance(center,tmp ) <= radiusInMeters;
+      var tmp = LatLng(marker.lat ?? 0, marker.long ?? 0);
+      return distance(center, tmp) <= radiusInMeters;
     }).toList();
   }
 
@@ -155,7 +167,11 @@ class InspectionMapLogic extends GetxController with GetTickerProviderStateMixin
     isLoading.value = true;
     allPoultryLocation.value = Resource<List<PoultryLocationModel>>.loading();
     await safeCall(
-      call: () => inspectionRepository.getNearbyLocation(),
+      call: () => inspectionRepository.getNearbyLocation(
+        centerLat: currentLocation.value.latitude,
+        centerLng: currentLocation.value.longitude,
+        radius: 15, // Radius in K meters
+      ),
       onSuccess: (result) {
         if (result != null) {
           allPoultryLocation.value = Resource<List<PoultryLocationModel>>.success(result);
@@ -170,4 +186,14 @@ class InspectionMapLogic extends GetxController with GetTickerProviderStateMixin
       },
     );
   }
+
+  double getVisibleRadiusKm({
+    required double zoom,
+    required double screenWidthPx,
+    required double latitude,
+  }) {
+    double metersPerPixel = 156543.03392 * cos(latitude * pi / 180) / pow(2, zoom);
+    double visibleWidthInMeters = metersPerPixel * screenWidthPx;
+    return (visibleWidthInMeters / 2) / 1000; // radius in KM
+  }
 }