bearingWithDistance: function(lat1, lng1, lat2, lng2) {

        let f1 = lat1, l1 = lng1, f2 = lat2, l2 = lng2;
        let toRadian = Math.PI / 180;
        let y = Math.sin((l2-l1)*toRadian) * Math.cos(f2*toRadian);
        let x = Math.cos(f1*toRadian)*Math.sin(f2*toRadian) - Math.sin(f1*toRadian)*Math.cos(f2*toRadian)*Math.cos((l2-l1)*toRadian);
        let brng = Math.atan2(y, x)*((180)/Math.PI);
        brng += brng < 0 ? (360) : 0;

        let R = 6371; // kilometres
        let deltaF = (f2 - f1)*toRadian;
        let deltaL = (l2 - l1)*toRadian;
        let a = Math.sin(deltaF/2) * Math.sin(deltaF/2) + Math.cos(f1*toRadian) * Math.cos(f2*toRadian) * Math.sin(deltaL/2) * Math.sin(deltaL/2);
        let c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
        let distance = R * c;

        return {bearing: brng.toFixed(1), distance: distance.toFixed(3)};
    }