点击获取Cesium中加载的3DTile模型的属性信息（二）
1.添加鼠标点击事件//鼠标单击左键事件
viewer.screenSpaceEventHandler.setInputAction(function onMouseClick( click ) {
//自己需要写逻辑的地方
},Cesium.ScreenSpaceEventType.LEFT_CLICK);
2.属性信息的位置
2.1 viewer.scene.pick(click.position)
var pickedFeature = viewer.scene.pick(click.position);if(Cesium.defined(pickedFeature)){
console.log(pickedFeature);
}Cesium.defined(value) 经常使用，用于判断object是否definepickedFeature长这样： 类型是 Cesium3DTileFeature<br><img src="https://img2023.cnblogs.com/blog/3074311/202301/3074311-20230107150916984-1888697950.png" alt="" loading="lazy">
自然而然在文档里去找，找到了getProperty方法
https://img2023.cnblogs.com/blog/3074311/202301/3074311-20230107151047747-2110889149.png
参数name也是就我们需要属性的名字，对应上一篇随笔中shp转3dtile时候shp的属性名称
输出看一下
console.log(pickedFeature.getProperty("name")); <img src="https://img2023.cnblogs.com/blog/3074311/202301/3074311-20230107151233207-475221451.png" alt="" loading="lazy"> 成功
2.2 tileset.tileLoad.addEventListener
Cesium3DTileset中有一个事件：tileLoad
https://img2023.cnblogs.com/blog/3074311/202301/3074311-20230107151515664-659394323.png
输出一下tile看看是什么
tileset.tileLoad.addEventListener(function(tile) {
console.log(tile);
})<br>
https://img2023.cnblogs.com/blog/3074311/202301/3074311-20230107151950315-1413021128.png
里面有个content属性，截图没截出来，输出看看
https://img2023.cnblogs.com/blog/3074311/202301/3074311-20230107152201136-1163505849.png
看看文档
https://img2023.cnblogs.com/blog/3074311/202301/3074311-20230107152352877-820990754.png
注意到有个方法getFeature，返回值是Cesium3DTileFeature类型，是不是和2.1一样，那就简单了
https://img2023.cnblogs.com/blog/3074311/202301/3074311-20230107152456446-560563073.png
tileset.tileLoad.addEventListener(function(tile) {
let featuresLength = content.featuresLength;
console.log("要素数量为：");
console.log(featuresLength);
console.log("第一个要素属性为：");
let feature = content.getFeature(0).getProperty("name");
console.log(feature);
})
https://img2023.cnblogs.com/blog/3074311/202301/3074311-20230107152755341-1858276205.png
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