ources/'
      let viewer = new DC.Viewer('viewer-container')
      viewer.setOptions({
        globe: {
          baseColor: DC.Color.BLACK,
        },
      })
      let layer_build = new DC.TilesetLayer('layer_build').addTo(viewer)
      let build = new DC.Tileset(
        '//resource.dvgis.cn/data/3dtiles/ljz/tileset.json',
        { skipLevels: true }
      )
      let customShader = new DC.CustomShader({
        fragmentShaderText: `
      void fragmentMain(FragmentInput fsInput, inout czm_modelMateri