ources/'
      let viewer = new DC.Viewer('viewer-container')
      let baseLayer = DC.ImageryLayerFactory.createAMapImageryLayer({
        style: 'img',
        crs: 'WGS84',
      })
      viewer.addBaseLayer(baseLayer, { brightness: 0.1 })

      let layer = new DC.VectorLayer('layer')
      viewer.addLayer(layer)

      let wall = new DC.Wall(
        '-107.0,43.0,50000.0;-97.0,43.0,50000.0;-97.0,40.0,50000.0;-107.0,40.0,50000.0;-107.0,43.0,50000.0'
      )
      wall.setStyle({
        material: new DC