location

latlong.js

var redraw = function(payload) {
  lat = payload.message.lat;
  lng = payload.message.lng;
  map.setCenter({lat:lat, lng:lng, alt:0});
  mark.setPosition({lat:lat, lng:lng, alt:0});
  lineCoords.push(new google.maps.LatLng(lat, lng));
  var lineCoordinatesPath = new google.maps.Polyline({
    path: lineCoords,
    geodesic: true,
    strokeColor: '#2E10FF'
  });
  lineCoordinatesPath.setMap(map);
};