fix: polyline decoding bug with large bounds and fix ulys API toll pricing precision

2026-06-04 16:40:50 +02:00
parent 555629760d
commit 0744665fe2
4 changed files with 91 additions and 35 deletions
@@ -0,0 +1,40 @@
+import 'package:latlong2/latlong.dart';
+
+List<LatLng> safeDecodePolyline(String encoded) {
+  if (encoded.isEmpty) return [];
+  try {
+    List<LatLng> poly = [];
+    int index = 0, len = encoded.length;
+    int lat = 0, lng = 0;
+
+    while (index < len) {
+      int b, shift = 0, result = 0;
+      do {
+        if (index >= len) break;
+        b = encoded.codeUnitAt(index++) - 63;
+        result |= (b & 0x1f) << shift;
+        shift += 5;
+      } while (b >= 0x20);
+      int dlat = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
+      lat += dlat;
+
+      shift = 0;
+      result = 0;
+      do {
+        if (index >= len) break;
+        b = encoded.codeUnitAt(index++) - 63;
+        result |= (b & 0x1f) << shift;
+        shift += 5;
+      } while (b >= 0x20);
+      int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
+      lng += dlng;
+
+      double finalLat = (lat / 1e5).clamp(-90.0, 90.0);
+      double finalLng = (lng / 1e5).clamp(-180.0, 180.0);
+      poly.add(LatLng(finalLat, finalLng));
+    }
+    return poly;
+  } catch (e) {
+    return [];
+  }
+}