angularjs – 如何使用mvc5中的angular-google-maps绘制多边形

<div ng-app="myapp" ng-controller="mapsController">
    <!--It displays the markers links-->
    <div class="locations">
        <ul>
            <li ng-repeat="l in locations" ng-click="ShowLocation(l.LocationID)"><a href="#">{{l.Title}}</a></li>
        </ul>
    </div>
    <div class="maps">
        <!-- Add directive code (gmap directive) for show map and markers-->
        <ui-gmap-google-map style="box-shadow:2px 2px 2px 2px lightgrey" center="map.center" zoom="map.zoom">
            <ui-gmap-marker ng-repeat="marker in markers" coords="marker.coords" options="marker.options" events="marker.events" idkey="marker.id">
                <ui-gmap-window options="windowOptions" show="windowOptions.show">
                    <ui-gmap-drawing-manager options="drawingManagerOptions" control="drawingManagerControl"></ui-gmap-drawing-manager>
                </ui-gmap-window>
            </ui-gmap-marker>
        </ui-gmap-google-map>
    </div>
</div>

在我的script.js中,我编写了以下代码

var app = angular.module('myapp',['uiGmapgoogle-maps']); //dependency we should add to angular application
app.controller('mapsController',function ($scope,uiGmapGoogleMapApi) {
    //this is default coordinates for the map when it loads for first time
    $scope.map = {
        center: {
            latitude: 41.850033,longitude: -87.6500523
        },zoom: 4,polygons: [],isDrawingModeEnabled: true,bounds: {}
    };
    $scope.markers = [];
    $scope.locations = [];

    $scope.windowOptions = {
        show: true
    };
    $scope.options = {
        scrollwheel: false
    };


    uiGmapGoogleMapApi.then(function (maps) {
        $scope.drawingManagerOptions = {
            drawingMode: google.maps.drawing.OverlayType.MARKER,drawingControl: true,drawingControlOptions: {
                position: google.maps.ControlPosition.TOP_CENTER,drawingModes: [
                  google.maps.drawing.OverlayType.MARKER,google.maps.drawing.OverlayType.CIRCLE,google.maps.drawing.OverlayType.POLYGON,google.maps.drawing.OverlayType.POLYLINE,google.maps.drawing.OverlayType.RECTANGLE
                ]
            },circleOptions: {
                fillColor: '#ffff00',fillOpacity: 1,strokeWeight: 5,clickable: false,editable: true,zIndex: 1
            }
        };
        $scope.markersAndCircleFlag = true;
        $scope.drawingManagerControl = {};
        $scope.$watch('markersAndCircleFlag',function () {
            if (!$scope.drawingManagerControl.getDrawingManager) {
                return;
            }
            var controlOptions = angular.copy($scope.drawingManagerOptions);
            if (!$scope.markersAndCircleFlag) {
                controlOptions.drawingControlOptions.drawingModes.shift();
                controlOptions.drawingControlOptions.drawingModes.shift();
            }
            $scope.drawingManagerControl.getDrawingManager().setOptions(controlOptions);
        });
    })

}).config(function (uiGmapGoogleMapApiProvider) {
      uiGmapGoogleMapApiProvider.configure({
          libraries: 'drawing,geometry,visualization'
      });
  });


//var latlng = new google.maps.LatLng(37.09024,-95.712891);
//latitude: 41.850033,longitude: -87.6500523

这只显示了一个缩放的谷歌地图,甚至没有绘制任何内容.请帮忙.我注意到的一件事是！$scope.drawingManagerControl.getDrawingManager在if条件中变为true并返回.