1. AreaLayer

Extends: Layer

1.1. 初始化 new AreaLayer(options)

矢量面图层,可实现单个或批量面状要素数据的添加、移除和定位等操作

Example

let geomap = new BOSGeo.GeoMap('bosgeoContainer');
let areaLayer = geomap.layerManager.createLayer(BOSGeo.LayerType.AREA, 'testarea');

1.2. 属性

Example

//example1.设置默认圆点
areaLayer.wallMaterial = BOSGeo.CustomAreaMaterial.DotMaterial;
//example2.设置指定颜色
areaLayer.landMaterial = new BOSGeo.CustomAreaMaterial({
    color: BOSGeo.Color.fromCssColorString("#67ADDF")
});
//example3.设置默认棋盘材质
areaLayer.wallMaterial = BOSGeo.CustomAreaMaterial.CheckboardMaterial;
//example4.设置指定颜色
areaLayer.wallMaterial = new BOSGeo.CustomAreaMaterial({
    color: BOSGeo.Color.BLUE
});

1.3. 方法

1.3.1. areaLayer.add(options) ⇒ Area

添加面对象（适用于单个数据的添加管理，不适用于批量面的一次性加载）

Example

let areaLayer = layerManager.createLayer(BOSGeo.LayerType.AREA, "面图层");
const landMaterial = BOSGeo.AreaMaterialConfig.DOT; //获取一套材质配置参数模板
landMaterial.lightColor = '#ff0000'; //修改材质配置参数     * 
areaLayer.add({
    positions: [[113, 24, 0], [112, 25, 0], [112, 20, 0]],
    landMaterial: landMaterial
});

1.3.2. areaLayer.addCircle(options) ⇒ Area

添加圆（适用于单个数据的添加管理，不适用于批量面的一次性加载）

Kind : instance method of AreaLayer Returns : Object -

包含面要素和圆的关键几何信息的对象

Example

const dotMaterial = BOSGeo.CustomAreaMaterial.DotMaterial;
var area = areaLayer.addCircle({
    center: [113, 24, 0],
    radius: 120,
    landMaterial: dotMaterial
});

1.3.3. areaLayer.remove(area, [onlyWall])

移除非批量添加的面对象（仅限于单个对象的移除，无法移除批量对象@see removeBatchedArea）

1.3.4. areaLayer.removeAll[onlyWalls])

移除所有非批量加载面要素及其墙体或仅移除其墙体

1.3.5. areaLayer.zoomToLayer(callback)

缩放至本图层

1.3.6. areaLayer.destroy()

销毁本图层

1.3.7. areaLayer.loadGeoJson(options) ⇒ Primitive | GroundPrimitive

通过GeoJson对象批量添加面要素对象

Kind : instance method of AreaLayer

Returns : Primitive | GroundPrimitive -

primitive 批量实例化对象，该图元有自定义属性primitiveId可用于定位和移除

Example

var batchedPrimitive;
// 移除上个批量图元集合
batchedPrimitive && areaLayer.removeBatchedArea(batchedPrimitive.primitiveId);
BOSGeo.Resource.fetchJson({
    url: 'http://bosgeo.boswinner.com/geoData/geojson/shenzhen_part11492.geojson'
}).then((res) => {
    batchedPrimitive = areaLayer.loadGeoJson({
        geojson: res,
        clampToGround: false,
        height: 10,
        defaultColor: BOSGeo.Color.YELLOW.withAlpha(.2),
        colorTable: {
            "${Floor} > 20": BOSGeo.Color.YELLOW,
            "${Floor} > 10": BOSGeo.Color.RED,
            "${Floor} >= 5": BOSGeo.Color.BLUE,
            "true": BOSGeo.Color.GREEN
        }
    });
    // 定位到当前添加的批量图元集合
    areaLayer.flyToBatchedArea(batchedPrimitive.primitiveId);
});

1.3.8. areaLayer.loadInBatch(options) ⇒ Primitive | GroundPrimitive

批量加载面要素对象

Kind : instance method of AreaLayer

Returns : Primitive | GroundPrimitive -

primitive 批量实例化对象，该图元有自定义属性primitiveId可用于定位和移除

Example

// 将polygon的geometry坐标点转化为Array.<Array.<Cartesian3>>
function transformPolygonCoordinates(coordinates) {
    let outline = coordinates[0];
    const outlineCoords = [];
    outline.forEach((point) => {
        outlineCoords.push(BOSGeo.Cartesian3.fromDegrees(point[0], point[1]));
    });
    // 洞
    const holes = [];
    for (let j = 1, geometryNumber = coordinates.length; j < geometryNumber; j++) {
        outline = coordinates[j];
        const hole = [];
        outline.forEach((point) => {
            hole.push(BOSGeo.Cartesian3.fromDegrees(point[0], point[1]));
        });
        holes.push(hole);
    }
    return [outlineCoords, ...holes];
}

// 加载Geojson
BOSGeo.Resource.fetchJson({
    url: 'http://bosgeo.boswinner.com/geoData/geojson/shenzhen_part11492.geojson'
}).then((res) => {

    const {features} = res;

    const propertiesList = [];
    const featurePositions = [];

    features.forEach((feature) => {
        const {geometry, properties} = feature;
        const {coordinates, type} = geometry;
        switch (type) {
            case 'Polygon':
                featurePositions.push(transformPolygonCoordinates(coordinates));
                propertiesList.push(properties);
                break;
            case 'MultiPolygon':
                coordinates.forEach((polygon) => {
                    featurePositions.push(transformPolygonCoordinates(polygon));
                    propertiesList.push(properties);
                });
                break;
        }
    });

    var batchedPrimitive = areaLayer.loadInBatch({
        positions: featurePositions,
        propertiesList: propertiesList,
        clampToGround: false,
        height: 10,
        defaultColor: BOSGeo.Color.YELLOW.withAlpha(.2),
        colorTable: {
            "${Floor} > 20": BOSGeo.Color.YELLOW,
            "${Floor} > 10": BOSGeo.Color.RED,
            "${Floor} >= 5": BOSGeo.Color.BLUE,
            "true": BOSGeo.Color.GREEN
        }
    });
    areaLayer.flyToBatchedArea(batchedPrimitive.primitiveId);
});

1.3.9. areaLayer.removeBatchedArea(primitiveId) ⇒ Boolean

移除批量区域

Kind : instance method of AreaLayer

Returns : Boolean -

true表示删除成功，false 表示目前图层内不存在批量区域或移除失败

See : loadGeoJson

1.3.10. areaLayer.removeAllAreas([onlyWalls])

移除所有非批量加载面要素及其墙体或仅移除其墙体

Kind : instance method of AreaLayer

1.3.11. areaLayer.flyToBatchedFeature(options)

定位到指定属性key值的要素对象(批量添加的面要素)

Kind : instance method of AreaLayer

1.3.12. areaLayer.flyToBatchedArea(primitiveId, options)

定位到批量区域

Kind : instance method of AreaLayer

See

• loadGeoJson
• loadInBatch

1.3.13. areaLayer.flyToArea(area, options)

定位到单独添加的面对象

Kind : instance method of AreaLayer