矩形绘制

可视域分析需要额外调用接口，需要引用插件 ViewshedAnalysis.js 和 ViewshedAnalysis.css

<script src="SDK/Plugins/VectorEditor/RectangleEditor.js"></script>

绘制可视域分析开始

// drawDataSource存储
var drawDataSource;
var promise = viewer.dataSources.add(new LSGlobe.GeoJsonDataSource("drawDataSource"), {
    /*attachPolygon:true*/
});
promise.then(function(dataSource) {
    drawDataSource = dataSource;
}).otherwise(function(error) {

});

//初始化标绘插件对象
oVectorEditor = new LSGlobe.RectangleEditor(viewer);

var fnEndPolyRectangleEdit = function(entity) {
    console.log(entity)
    //检测标绘集合中是否已经含有该entity
    if (!drawDataSource.entities.getById(entity.id)) {
        //添加到场景中
        drawDataSource.entities.add(entity);
        //也可以扩展其他功能，如向树节点添加节点等
    } else {
        //修改当前entity,参照标绘编辑--线编辑
    }
    viewer.entities.removeById(entity.id);
};

//在结束绘制同时取消编辑状态
oVectorEditor.drawStoppedEvent.addEventListener(function(entity) {
    console.log('drawStoppedEvent', entity)
});

//绘制矩形
oVectorEditor.material = LSGlobe.Color.fromCssColorString("blue");
oVectorEditor.classificationType = undefined; //TERRAIN:贴地表，CESIUM_3D_TILE：贴模型，BOTH贴模型贴地表，undefined：空间线
drawDataSource.editable = true; //drawDataSource.entites中集合可以再次编辑
oVectorEditor.editStoppedEvent.addEventListener(fnEndPolyRectangleEdit);

// 开始绘制
oVectorEditor.startDrawing();

删除绘制监听

//如需要删除该回调可以用删除监听接口
oVectorEditor._endEditEvent.removeEventListener(fnEndPolyRectangleEdit);

在线示例

在线示例