### gmaps - Overlays

#### Polylines

The path of the polyline is defined by an array of array of two (latitude and longitude).

#### Overlays

You must define latitude, longitude and the content of the map overlay.

Also, you must define a height to the content.

Also, you can define a `verticalAlign`, which can be `top`, `middle` or `bottom`, and `horizontalAlign`, which can be `left`, `center` or `right`.

#### Polygons

The path of a polygon can be defined as an array of:

- `google.maps.LatLng` objects, or
- arrays of coordinates, with index 0 and 1 as, respectively, latitude and longitude (as in the example)

Also, you can add a GeoJSON Polygon or MultiPolygon path using `useGeoJSON: true`.

#### GeoJSON Polygons

The GeoJSON Polygon should be surrounded by brackets, according the specification.