zhaoweijing2003 / ol3-google-maps

OpenLayers - Google Maps integration

OL3-Google-Maps

OpenLayers - Google Maps integration library. Create a map using OpenLayers 3 with the possibility to use Google Maps as base map and much more.

Features

Synchronizes:

• Layers (Google, Vector)
• Vector features (style, geometry)

Quick start

To use OL3-Google-Maps, first you need to load Google Maps API. It's important to load Google Maps API before OL3-Google-Maps. You also need to use your own Google Maps API key.

<script
  type="text/javascript"
  src="https://maps.googleapis.com/maps/api/js?v=3&key=<YOUR_KEY>">
</script>

Then, load the OL3-Google-Maps script included in the tarball of the version you downloaded, which already includes OpenLayers so you don't need to load OpenLayers too.

<script type="text/javascript" src="ol3gm.js"></script>

It is recommended to load the CSS file included in there as well.

<link rel="stylesheet" href="ol3gm.css" type="text/css" />

Then, in your existing OpenLayers application, activate OL3-Google-Maps. Here's a simple example:

var center = [-7908084, 6177492];

// This dummy layer tells Google Maps to switch to its default map type
var googleLayer = new olgm.layer.Google();

var map = new ol.Map({
  // use OL3-Google-Maps recommended default interactions
  interactions: olgm.interaction.defaults(),
  layers: [
    googleLayer
  ],
  target: 'map',
  view: new ol.View({
    center: center,
    zoom: 12
  })
});

var olGM = new olgm.OLGoogleMaps({map: map}); // map is the ol.Map instance
olGM.activate();

Live examples

See OL3-Google-Maps in action:

• Simple
• Vector
• Label
• Concept

See all other examples at: http://mapgears.github.io/ol3-google-maps/examples/

Developing

See the developing instructions if you want to contribute new features or patches to OL3-Google-Maps.

Known Limitations

Please see the known limitations of this library in details.

Bugs and issues

For bugs or feature requests, use the issue tracker

If you need help with the library, use StackOverflow under the ol3-google-maps tag