覆盖物群组

覆盖物群组 OverlayGroup

当用户需要对一组覆盖物集合做整体操作时，可以使用 OverlayGroup 类创建的实例来操作，以避免通过循环来一个个设置属性。

JavaScript

                    var lineArr = [
                        [116.37, 39.91],
                        [116.38, 39.90],
                        [116.39, 39.91],
                        [116.40, 39.90]
                    ];
                    var polyline = new nimap.Polyline({
                        path: lineArr,          //设置线覆盖物路径
                        "line-join": 'round',
                        "line-cap": 'round',
                        "line-width":8,
                        'line-blur':0,
                    });

                    var polygonArr = new Array();//多边形覆盖物节点坐标数组
                    polygonArr.push([116.40, 39.92]);
                    polygonArr.push([116.41, 39.90]);
                    polygonArr.push([116.40, 39.89]);
                    polygonArr.push([116.39, 39.89]);
                    polygonArr.push([116.40, 39.92]);
                    var  polygon = new nimap.Polygon({
                        path: polygonArr,//设置多边形边界路径
                        'fill-antialias': true,
                        'fill-outline-color': 'red',
                        'fill-opacity': 0.8,
                        "line-width": 10,
                    });

                    var circle = new nimap.Circle({
                        center: "116.40,39.92",// 圆心位置
                        radius: 1000, //半径
                        'fill-antialias': true,
                        'fill-outline-color': 'red',
                        "line-width": 10,
                    });

                    var overlayGroup = new nimap.OverlayGroup([ polyline, polygon, circle ]);
                    map.on('load',function () {
                        //polyline.addTo(map);
                        //polygon.addTo(map);
                        //circle.addTo(map);
                        overlayGroup.addTo(map);
                        map.setFitView(polyline.path.concat(polygon.path).concat(circle.path));
                    })