gmap_script_distance

gistfile1.js

google.maps.LatLng.prototype.kmTo = function(a) {
    var b, c, d, e, f, g, ra;
    e = Math;
    ra = e.PI / 180;
    b = this.lat() * ra;
    c = a.lat() * ra;
    d = b - c;
    g = this.lng() * ra - a.lng() * ra;
    f = 2 * e.asin(e.sqrt(e.pow(e.sin(d / 2), 2) + e.cos(b) * e.cos(c) * e.pow(e.sin(g / 2), 2)));
    return f * 6378.137;
};

google.maps.Polyline.prototype.inKm = function(n) {
    var a, i, len, pathLenght;
    a = this.getPath(n);
    len = a.getLength() - 1;
    pathLenght = 0;
    for (i = 0; i < len; i += 1) {
        pathLenght += a.getAt(i).kmTo(a.getAt(i + 1));
    }
    return pathLenght.toString().replace(NUMBER_DOT_TWONUMBERS, '$1$2');
};