如何制作Google Maps API v3六边形平铺地图,最好是基于坐标？

<div id="map" style="width: 100%; height: 100%;"></div>

function initMap() {
  var map = new google.maps.Map(document.getElementById('map'), {
    center: {lat: 0, lng: 0},
    zoom: 1,
    mapTypeId: google.maps.MapTypeId.SATELLITE
  });
}

function createHexagon(center, radius) {
  var hexagon = [];
  var latLng = new google.maps.LatLng(center.lat, center.lng);
  var vertex = [];

  for (var i = 0; i < 6; i++) {
    var angle = Math.PI / 3 * i;
    var vertexLat = center.lat + radius * Math.cos(angle);
    var vertexLng = center.lng + radius * Math.sin(angle);
    vertex.push(new google.maps.LatLng(vertexLat, vertexLng));
  }

  for (var j = 0; j < 6; j++) {
    hexagon.push(vertex[j]);
  }

  return hexagon;
}

var hexagon = createHexagon({lat: 30.5928, lng: 114.3055}, 0.1);
var polygon = new google.maps.Polygon({
  paths: hexagon,
  strokeColor: '#FF0000',
  strokeOpacity: 0.8,
  strokeWeight: 2,
  fillColor: '#FF0000',
  fillOpacity: 0.35
});
polygon.setMap(map);