
      DC.config.baseUrl = '../libs/dc-sdk/resources/'
      let viewer = new DC.Viewer('viewer-container')
      let baseLayer = DC.ImageryLayerFactory.createAMapImageryLayer({
        style: 'img',
        crs: 'WGS84',
      })
      viewer.addBaseLayer(baseLayer)
      viewer.tooltip.enable = true
      viewer.on(DC.MouseEventType.MOUSE_MOVE, (e) => {
        viewer.tooltip.showAt(e.windowPosition, '我是鼠标提示')
      })
      let controls = {
        enable: true,
      }
      let gui = new da