updatePolygonOpacity() {
      layer.updateSymbol(0, { polygonOpacity: 1 });
    }

    function updateTexture() {
      litMaterial.baseColorTexture = 'http://localhost/maptalksgl-dev/debug/reshader/ibl/resources/rusted_iron/609-normal.jpg';
      layer.updateSymbol(0, style.style[0].symbol);
    }

    function hide() {
      layer.updateSymbol(0, { visible: false });
      layer.updateSymbol(1, { visible: false });
    }

    var bearing = 0;
    var paused = false;
    function changeView() {
      map.