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前提问题：在cesuim上展示二维模型

解决过程：

1.获取或定义所需变量

2.通过window.cesium.viewer.imageryLayers.addImageryProvider和new Cesium.UrlTemplateImageryProvider进行建模

3.传入url路径后拼接+{z}/{x}/{y}.png

4.聚焦到此模型window.cesium.viewer.camera.flyTo

//此值根据实际情况进行获取或定义
let metaContent = ...
let twoModelInfo ={url: url,areas: [{west: metaContent.west,south: metaContent.south,east: metaContent.east,north: metaContent.north,// 瓦片等级minimumLevel: 10,maximumLevel: 23}]
}
create2DModel(twoModelInfo,isFocus)//创建二维正射影像
export const create2DModel= (twoModelInfo,isFocus) => {if (twoModelInfo && twoModelInfo?.areas?.length > 0 ) {let tilesUrl = twoModelInfo.urltwoModelInfo.areas.forEach(item => {window.cesium.viewer.imageryLayers.addImageryProvider(new Cesium.UrlTemplateImageryProvider({url: tilesUrl  + "{z}/{x}/{y}.png",minimumLevel: item.minimumLevel,maximumLevel: item.maximumLevel,rectangle: new Cesium.Rectangle.fromDegrees(item.west, item.south, item.east, item.north)}))//判断是否需要在建模后聚焦到此模型if(isFocus){window.cesium.viewer.camera.flyTo({destination : new Cesium.Rectangle.fromDegrees(item.west, item.south, item.east, item.north)});}})}
}