Try following psuedo code

var bounds = new google.maps.LatLngBounds();
var points = [];
var point;
var polygon;

//Create array of points defining your polygon
for each point on your polygon...
    point = new google.maps.LatLng(<lat>,<lng>);
    bounds.extend(point);
    points.push(point):

  polygon = new google.maps.Polygon({
    paths: points,
    strokeColor: "#FF0000",
    strokeOpacity: 0.8,
    strokeWeight: 2,
    fillColor: "#FF0000",
    fillOpacity: 0.35
  });

  polygon.setMap(map);

  //Then fit the map to your bounds object
  map.fitBounds(bounds);


On Nov 10, 3:27 pm, hvr <hovercraf...@gmail.com> wrote:
> Hi There,
>
> I'm trying to dynamically draw a polygon on my map and i want to set
> the zoom level so that no matter what the shape/size of the polygon it
> will always be fully shown on the map.  I've found instructions on how
> to do this in V2 of the api but it seem that certain methods are
> missing in V3.  is there a new way to do this or has the functionality
> not been added yet?
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