Highlight polygon and tint rest of map using Google Maps [duplicate]

Google Maps API v3 lets you draw polygons with holes. Here’s Google’s Pentagon example. It is much easier than trying to invert a polygon. Basically, create coordinates for a giant polygon that is bigger than you would ever need. That will always be the first polygon in your polygon array. The area you are highlighting will always be the second polygon.

Here’s some code to change Google’s Bermuda Triangle demo to use a polygon with a hole:

  var everythingElse = [
    new google.maps.LatLng(0, -90),
    new google.maps.LatLng(0, 90),
    new google.maps.LatLng(90, -90),
    new google.maps.LatLng(90, 90),
  ];



  var triangleCoords = [
    new google.maps.LatLng(25.774252, -80.190262),
    new google.maps.LatLng(18.466465, -66.118292),
    new google.maps.LatLng(32.321384, -64.75737),
    new google.maps.LatLng(25.774252, -80.190262)
  ];




  bermudaTriangle = new google.maps.Polygon({
    paths: [everythingElse, triangleCoords],
    strokeColor: "#000000",
    strokeOpacity: 0.8,
    strokeWeight: 2,
    fillColor: "#000000",
    fillOpacity: 0.5
  });

  bermudaTriangle.setMap(map);