基于高德地图js api实现掩膜效果中间矢量周围卫星图

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>管网服务</title>
    <style>
        html,
        body,
        #map {
            width: 100%;
            height: 100%;
            margin: 0;
            padding: 0;
        }
    </style>
</head>
<body>
    <div id="map"></div>
    <script type="text/javascript">
        window._AMapSecurityConfig = {
            securityJsCode: "",
        };
    </script>
    <script type="text/javascript"
            src="https://webapi.amap.com/maps?v=2.0&key=&plugin=AMap.DistrictSearch"></script>
    <script type="text/javascript">


        var opts = {
            subdistrict: 0,   //返回下一级行政区
            extensions: 'all',  //返回行政区边界坐标组等具体信息
        };
        //实例化DistrictSearch
        var district = new AMap.DistrictSearch(opts);
        district.search('汉中', function (status, result) {
            var bounds = result.districtList[0].boundaries;
            var mask = []
            for (var i = 0; i < bounds.length; i += 1) {
                mask.push([bounds[i]])
            }
            var disCountry = new AMap.TileLayer.Satellite({
                zIndex: 1,
                rejectMapMask: true,
                opacity: 0.7,
            })

            var map = new AMap.Map('map', {
                mask: mask,
                center: [116.472804, 39.995725],

                viewMode: '3D',
                labelzIndex: 130,
                zoom: 3,
                cursor: 'pointer',
                layers: [
                    new AMap.TileLayer.RoadNet({
                        zIndex: 7
                    }),
                    disCountry,
                    AMap.createDefaultLayer()
                ]
            });
            map.setMapStyle("amap://styles/1e1fr048669174f5a13ad0ab7ba6715e")
            //添加描边
            for (var i = 0; i < bounds.length; i += 1) {
                new AMap.Polyline({
                    path: bounds[i],
                    strokeColor: '#99ffff',
                    strokeWeight: 4,
                    map: map
                })
            }
        })



    </script>
</body>
</html>

效果图