angular-google-maps directions service example

yourCtrl.js

addresses = addressService.query();
addresses.$promise.then(function (result) {

console.log('task query done');

    createWaypointsFromAddresses(addresses);

    return uiGmapGoogleMapApi;
})
.then( function(maps) {

console.log('uiGmapGoogleMapApi done');

    $scope.map = {
        center: { latitude: 0, longitude: 0 },
        zoom: 16
    };

    $scope.directionsService = new maps.DirectionsService();
    $scope.directionsDisplay = new maps.DirectionsRenderer();

    return uiGmapIsReady.promise(1);
})
.then( function(instances) {

console.log('uiGmapIsReady done');

    var instanceMap = instances[0].map;

    $scope.directionsDisplay.setMap(instanceMap);

    $scope.directionsService.route(directionsServiceRequest, function(response, status) {
        if (status == google.maps.DirectionsStatus.OK) {
            $scope.directionsDisplay.setDirections(response);
        }
    });
});