eLayer = DC.ImageryLayerFactory.createImageryLayer(
        DC.ImageryType.AMAP,
        {
          style: 'img',
          crs: 'WGS84',
        }
      )
      viewer.addBaseLayer(baseLayer, {
        brightness: 0.1,
      })
      let layer = new DC.PrimitiveLayer('layer').addTo(viewer)
      let positions = generatePosition(100)
      positions.forEach((item) => {
        let model = new DC.ModelPrimitive(item, '../assets/data/Cesium_Air.glb')
        model.on(DC.ModelEventType.READY, (model) => {
   