/**
            * 行政区划内搜索
           */
           function switchBoundry() {
               function getBoundary() {
                   var bdary = new BMapGL.Boundary();
                   bdary.get(configs.city, function (rs) { // 获取行政区域
                       map.clearOverlays();
                       var count = rs.boundaries.length; // 行政区域的点有多少个
                       if (count === 0) {
                           alert('未能获取当前输入行政区域');
                           return;
                       }
                       var pointArray = [];
                       for (var i = 0; i < count; i++) {
                           var ply = new BMapGL.Polygon(rs.boundaries[i], {strokeWeight: 2, strokeColor: '#f00'}); // 建立多边形覆盖物
                           map.addOverlay(ply);
                           pointArray = pointArray.concat(ply.getPath());
                       }
                       map.setViewport(pointArray); // 调整视野
                   });
               }
               var geo = new BMapGL.Geocoder();
               geo.getPoint(configs.city, function (point) {
                   if (point) {
                       var local = new BMapGL.LocalSearch(configs.city, {
                           renderOptions: {map: map}
                       });
                       local.search(configs.srchvalue, point, 1000);
                   } else {
                       console.log('选择的城市有误');
                   }
               });
               setTimeout(function () {
                   getBoundary();
               }, 0);
           }
       
           /**
            * 周边搜索（圆形区域检索）
           */
           function switchNearby() {
               map.clearOverlays();
               var mylocation = new BMapGL.Geolocation();
               mylocation.getCurrentPosition(function (rs) {
                   if (this.getStatus() === BMAP_STATUS_SUCCESS) {
                       map.clearOverlays();
                       map.panTo(rs.point);
                       var point = rs.point;
                       var circle = new BMapGL.Circle(point, 5000, {
                           fillColor: 'blue',
                           strokeWeight: 1,
                           fillOpacity: 0.2,
                           strokeOpacity: 0.3
                       });
                       map.addOverlay(circle);
                       var local = new BMapGL.LocalSearch(point, {
                           renderOptions: {map: map}
                       });
                       local.searchNearby(configs.srchvalue, point, 5000);
                   }
               });
           }
       
           /**
            * 视野范围内搜索(矩形区域检索)
           */
           function switchViewport() {
               map.clearOverlays();
               var bounds = map.getBounds(); // 返回地图可视区域
               var local = new BMapGL.LocalSearch(map, {
                   renderOptions: {map: map}
               });
               var pStart = new BMapGL.Point(bounds.sw.lng, bounds.sw.lat);
               var pEnd = new BMapGL.Point(bounds.ne.lng, bounds.ne.lat);
               var bs = new BMapGL.Bounds(pStart, pEnd);
               local.searchInBounds(configs.srchvalue, bs);
           }
           /**
            * 点击搜索按钮
            */
            function seachResult() {
                var value = document.getElementById('srchinput').value;
                configs.srchvalue = value ? value : configs.srchvalue;
                var city = document.getElementById('citySelect').value;
                configs.city = city ? city : configs.city;
                switch (configs.checkTab) {
                    case 0:
                        switchBoundry();
                        break;
                    case 1:
                        switchNearby();
                        break;
                    case 2:
                        switchViewport();
                        break;
                }
            }