GetFeatureInfoFormat

GetFeatureInfoFormat是一个Cesium JS的类，被用于定义解析GetFeatureInfo服务请求响应中数据的格式。

语法

new Cesium.GetFeatureInfoFormat(format)

参数

• format：String类型，格式化字符串。

示例

var viewer = new Cesium.Viewer('cesiumContainer', {
    imageryProvider : new Cesium.ArcGisMapServerImageryProvider({
        url : 'http://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer',
        enablePickFeatures: true
    })
});

viewer.screenSpaceEventHandler.setInputAction(function onLeftClick(movement) {
    var scene = viewer.scene;
    if(scene.mode !== Cesium.SceneMode.SCENE3D) {
        return;
    }

    var pickedWindowPosition = movement.position;
    var ray = scene.camera.getPickRay(pickedWindowPosition);
    var ellipsoid = scene.globe.ellipsoid;
    var cartesian = scene.camera.pickEllipsoid(pickedWindowPosition, ellipsoid);

    if(cartesian) {
        var imageryLayers = viewer.imageryLayers;
        var pickFeaturesPromise = imageryLayers.pickImageryLayerFeatures(ray, scene, pickedWindowPosition);
        if(!Cesium.defined(pickFeaturesPromise)) {
            return;
        }

        Cesium.when(pickFeaturesPromise, function(features) {
            if(features.length > 0) {
                var html = buildFeatureInfo(features);
                showFeatureInfo(html);
            }
        });
    }
}, Cesium.ScreenSpaceEventType.LEFT_CLICK);

function buildFeatureInfo(features) {
    var html = [];
    for(var i = 0; i < features.length; ++i) {
        var feature = features[i];

        if(!Cesium.defined(feature.data) || feature.data === null) {
            continue;
        }

        html.push('<table class="cesium-infoBox-defaultTable"><tbody>');
        for(var key in feature.data) {
            if(feature.data.hasOwnProperty(key)) {
                html.push('<tr><th>' + key + '</th><td>' + feature.data[key] + '</td></tr>');
            }
        }
        html.push('</tbody></table>');
    }
    return html.join('');
}

function showFeatureInfo(info) {
    Sandcastle.updateDocumentHTML(info);
}

参考

• Cesium API GetFeatureInfoFormat