google-mapsleafletmapsopenstreetmapgoogle-indoor-maps

Render Icon on custom floor tiles using OSM & Leaflet

I need to convert the some functionality of google maps into Leaflet and OSM. What I have is an indoor visitor tracking application that uses google maps with custom tiles (Indoor floor plan image). It plot markers on the locations of visitors (indoor) by converting X Y coordinates into Lat Lng. Its done through 

function findLatLangFromImagePixel(imgPixel) {
    var scalingRatio = ImageWidth / 256;
    var pixel = { x: ((imgPixel.X) / scalingRatio), y: ((imgPixel.Y) / scalingRatio) };

    var point = new google.maps.Point(pixel.x + 0.5, pixel.y + 0.5);
    return map.getProjection().fromPointToLatLng(point);
}

enter image description here

In Leaflet maps I am trying the following code to achieve same results (using the same image/tiles):

var x = ImageXYLocation.X;
            var y = ImageXYLocation.Y;
            var scalingRatio = ImageWidth / 256;
            var pixel = { x: ((x) / scalingRatio), y: ((y) / scalingRatio) };
var pointXY = L.point(pixel.x + 0.5, pixel.y +0.5);

            latlng = map.layerPointToLatLng(pointXY);
latlng.lng += 180;

But I am getting different results. Also, I observed that as the marker switches its location on the indoor map upon changing the resolution of my screen . It seems that the marker position is dependent on my screen resolution or at zoom level. enter image description here

And second zoom level enter image description here

Update: Map initialization code is below:

 if (map != null) {
            map.remove();
        }
        $("#map_canvas").html("");

        map = L.map('map_canvas', {
            minZoom: 1,
            maxZoom: 4,
            center: [0, 0],
            zoom: 1,
            crs: L.CRS.Simple,
        });
        var w = 6095,
            h = 3410;
        var southWest = map.unproject([0, h], map.getMaxZoom() - 1);
        var northEast = map.unproject([w, 0], map.getMaxZoom() - 1);
        var bounds = new L.LatLngBounds(southWest, northEast);
        L.tileLayer('./tiles/{z}/{x}/{y}.png', {
            maxZoom: 16,
            minZoom: 0,
            continuousWorld: false,
            bounds: bounds,
            attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
        }).addTo(map);

        map.setZoom(5);
        map.setMaxBounds(bounds);

        map.zoomControl.setPosition('bottomright');

Update 2:

enter image description here

Solution

  • Thanks for your guidance. I have been able to figure out the solution. I used the following code to get the correct LatLng

    var x = ImageXYLocation.X;
var y = ImageXYLocation.Y;
var scalingRatio = ImageWidth / 256;
var pixel = { x: ((x / scalingRatio) * Math.pow(2, map.getZoom())), y: ((y / scalingRatio) * Math.pow(2, map.getZoom())) };

var pointXY = L.point(pixel.x + 0.5, pixel.y +0.5);

latlng = map.unproject(L.point(pixel.x, pixel.y));