From 810e1180599669506bdaea26b35ce825d4be7ab4 Mon Sep 17 00:00:00 2001
From: "torok.istvan" <torok.istvan@mail.app-dev.hu>
Date: Sat, 9 May 2026 23:14:18 +0200
Subject: [PATCH] =?UTF-8?q?Hibajav=C3=ADt=C3=A1s:=20CoordConverterService?=
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---
 lib/main.dart                             |  3 ++-
 lib/services/coord_converter_service.dart | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/lib/main.dart b/lib/main.dart
index 2f73851..fb6f6de 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -14,7 +14,8 @@ Future<void> main() async {
       anonKey:
           'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.ewogICJyb2xlIjogImFub24iLAogICJpc3MiOiAic3VwYWJhc2UiLAogICJpYXQiOiAxNzQwMjY1MjAwLAogICJleHAiOiAxODk4MDMxNjAwCn0.4cMVfAnBLxne1lq0fm94rgtXLBJdRx-0f-E4Jd_jFwI');
 
-  await Get.putAsync(() => CoordConverterService().onInit());
+  await Get.putAsync<CoordConverterService>(
+      () => CoordConverterService().init());
 
   runApp(const MyApp());
 }
diff --git a/lib/services/coord_converter_service.dart b/lib/services/coord_converter_service.dart
index c0f7609..faa90dd 100644
--- a/lib/services/coord_converter_service.dart
+++ b/lib/services/coord_converter_service.dart
@@ -28,6 +28,25 @@ class CoordConverterService extends GetxService {
     wgsProj = proj4.Projection.WGS84;
   }
 
+  Future<CoordConverterService> init() async {
+    final bytes = (await rootBundle.load('assets/Grids/etrs2eov_notowgs.gsb'))
+        .buffer
+        .asUint8List();
+
+    proj4.Projection.nadgrid('Etrs2Eov', bytes);
+
+    const def =
+        '+proj=somerc +lat_0=47.14439372222222 +lon_0=19.04857177777778 '
+        '+k_0=0.99993 +x_0=650000 +y_0=200000 +ellps=GRS67 '
+        '+towgs84=52.17,-71.82,-14.9,0,0,0,0 '
+        '+units=m +nadgrids=Etrs2Eov +no_defs';
+
+    eovProj = proj4.Projection.add('EPSG:23700', def);
+    wgsProj = proj4.Projection.WGS84;
+
+    return this; // ← ez a kulcs
+  }
+
   // Segédmetódusok — nem kötelező, de tisztább
   proj4.Point wgsToEovPoint(double lon, double lat) =>
       wgsProj.transform(eovProj, proj4.Point(x: lon, y: lat));