cesium根据不同层级大小，划分当前网格

<template>
    <div>
        <div class="full-container" :style="viewStyle" id="cesiumContainer" />
    </div>
</template>
<script setup>
import { ref, reactive, onMounted } from "vue";
import * as Cesium from "cesium";
import * as turf from "@turf/turf";
var viewer = null
var saveLevel = 1;  //当前视角层数
var dealArr = []    //需要处理的数组
var gridArr = [];   //网格数组
const cesiumGather = reactive({
    cesiumViewer: null, //初始化地图
    //   cesiumPointList: [], //点位集合
    //   cesiumPointAddList: [], //点位集合
    //   pointVisible: false, //控制【添|编标注】弹窗
    //   pointOptions: [

    //   ],
    //   pointForm: {
    //     title: "标注名称",
    //     point: null,
    //     image: siteIcon4,
    //   },
    //   popVisible: false,
    //   pointTitle: "",
    //   drawHandler: null, //事件
});
onMounted(() => {
    const tianDiTuToken = "5571cb32eeb8596f97fa9790172addab";
    Cesium.Ion.defaultAccessToken =
        "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiIwMTQxMGIzNC04N2M0LTQ0MDUtOTdlYi02ZGE0NTgyZGVjMzAiLCJpZCI6MzA5ODUsInNjb3BlcyI6WyJhc3IiLCJnYyJdLCJpYXQiOjE1OTQ2OTQ5NzN9.JbUqIgKO92noy6B8zcYMdq8QygnMKM70RIdJZqAwwdk";
    // 服务负载子域
    const subdomains = ["0", "1", "2", "3", "4", "5", "6", "7"];
    // 创建图层
    viewer = new Cesium.Viewer("cesiumContainer", {
        animation: false, //是否创建动画小器件，左下角仪表
        timeline: true, //是否显示时间轴
        geocoder: false, //是否显示geocoder小器件，右上角查询按钮
        baseLayerPicker: false, //是否显示图层选择器
        fullscreenButton: false, //是否显示全屏按钮
        homeButton: true, //是否显示Home按钮
        infoBox: false, //是否显示信息框
        sceneModePicker: false, //是否显示3D/2D选择器
        scene3DOnly: false, //如果设置为true，则所有几何图形以3D模式绘制以节约GPU资源
        selectionIndicator: false, //是否显示选取指示器组件
        navigationHelpButton: false, //是否显示右上角的帮助按钮
        baselLayerPicker: false, // 将图层选择的控件关掉，才能添加其他影像数据
        shadows: true, //是否显示背影
        /*新增的*/
        shouldAnimate: true, // Enable animations
    });
    //   将图层挂载到window上
    window.cesiumViewer = viewer;
    // viewer.imageryLayers.addImageryProvider(
    //     new Cesium.WebMapTileServiceImageryProvider({
    //         //影像注记
    //         url: `http://t0.tianditu.com/cia_w/wmts?service=wmts&request=GetTile&version=1.0.0&LAYER=cia&tileMatrixSet=w&TileMatrix={TileMatrix}&TileRow={TileRow}&TileCol={TileCol}&style=default.jpg&tk=${tianDiTuToken}`,
    //         subdomains: subdomains,
    //         layer: "tdtCiaLayer",
    //         style: "default",
    //         format: "image/jpeg",
    //         tileMatrixSetID: "GoogleMapsCompatible",
    //         maximumLevel: 18,
    //     })
    // );
    //优化项--关闭相关特效
    viewer.scene.debugShowFramesPerSecond = false; //显示fps
    viewer.scene.moon.show = false; //月亮
    viewer.scene.fog.enabled = false; //雾
    viewer.scene.sun.show = false; //太阳
    viewer.scene.skyBox.show = false; //天空盒
    viewer.resolutionScale = 1.0; //画面细度，默认值为1.0
    //去除版权信息
    viewer._cesiumWidget._creditContainer.style.display = "none";
    //隐藏时间轴
    viewer.timeline.container.style.display = "none";
    // 设置缩放最小比例
    // viewer.scene.screenSpaceCameraController.minimumZoomDistance = 250;
    viewer.scene.screenSpaceCameraController.maximumZoomDistance = 122500000;

    // 禁止双击
    viewer.cesiumWidget.screenSpaceEventHandler.removeInputAction(
        Cesium.ScreenSpaceEventType.LEFT_DOUBLE_CLICK
    );
    // 将三维球定位到中国
    // viewer.camera.flyTo({
    //     destination: Cesium.Cartesian3.fromDegrees(108.09876, 37.200787, 1400000),
    //     duration: 1,
    // });
    // 将三维球定位到中国
    viewer.camera.flyTo({
        destination: Cesium.Cartesian3.fromDegrees(103.84, 31.15, 17850000),
        orientation: {
            heading: Cesium.Math.toRadians(348.4202942851978),
            pitch: Cesium.Math.toRadians(-89.74026687972041),
            roll: Cesium.Math.toRadians(0),
        },
        complete: function callback() {
            // 定位完成之后的回调函数
        },
    });
    // 
    const entities = viewer.entities;
    var wyoming = viewer.entities.add({
        name: 'Wyoming',
        polygon: {
            hierarchy: Cesium.Cartesian3.fromDegreesArra