How to show Marker (convert pixel to latitude and longitude) based on X Y pixel on fixed size map?

[DVCStudioX]

I have a map size 1024x1024, and a point in the position x 671, y 560

So what formula to get latitude and longitude of that point to show the Marker?

Pls help me, this is the full code:

import 'package:flutter/material.dart';
import 'package:flutter_map/flutter_map.dart';
import 'package:latlong2/latlong.dart';

void main() => runApp(MaterialApp(home: HomePage()));

class HomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    var imgHeight = 1024;
    var imgWidth = 1024;

    var pointY = 560;
    var pointX = 671;

    var markers = <Marker>[
      Marker(
        point: LatLng(0, 0), // How to get position of XY
        builder: (ctx) => Container(child: Icon(Icons.clear)),
      ),
    ];

    return Scaffold(
      appBar: AppBar(title: Text('Home')),
      body: FlutterMap(
        options: MapOptions(
          interactiveFlags: InteractiveFlag.all & ~InteractiveFlag.rotate,
          center: LatLng(0, 0),
          zoom: 0,
        ),
        layers: [
          TileLayerOptions(
            urlTemplate:
                'https://firebasestorage.googleapis.com/v0/b/tft-test-48c87.appspot.com/o/LatLng%2F{z}%2F{y}%2F{x}.png?alt=media&token=c5eb1e3f-4240-4128-b0e2-5bd4936d9447',
            tileProvider: NonCachingNetworkTileProvider(),
          ),
          MarkerLayerOptions(markers: markers)
        ],
      ),
    );
  }
}

[JaffaKetchup]

You can use a version of a formula available at https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames, but try using the built in CRS methods. Specifically you'll need pointToLatLng() (I think it's called that), and potentially (un)scaleBy().

You may want to check out this comment and the surrounding thread: #941 (comment)

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