bathroomsByDistance.js

bathroomsByDistance (userLocation) {
  let dist = (a, b) => {
    lat1 = a.lat
    lon1 = a.lon
    lat2 = b.lat
    lon2 = b.lon

    function rad(radiano) {
      return radiano*Math.PI/180;
    }

    var R     = 6378.137;
    var dLat  = rad( lat2 - lat1 );
    var dLong = rad( lon2 - lon1 );

    var a = Math.sin(dLat/2) * Math.sin(dLat/2) + Math.cos(rad(lat1)) * Math.cos(rad(lat2)) * Math.sin(dLong/2) * Math.sin(dLong/2);
    var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
    var d = R * c;

    return d.toFixed(6);
  }

  let compareDist = (b1, b2) => {
    if (dist(userLocation, b1) < dist(userLocation, b2))
      return -1;
    if (dist(userLocation, b1) > dist(userLocation, b2))
      return 1;
    return 0;
  }

  return this.banheiros.sort(compareDist)

}