cesium_example_auth/public/cesium_example/example/js/center_terrain_3dtiles.js

"use script"; //开发环境建议开启严格模式

$(document).ready(function () {
  let inhtml = `
            <div class="infoview rightbottom">
                <input type="button" class="btn btn-primary" value="定位至山区" onclick="centerAtTerrain()" />
                <input type="button" class="btn btn-primary" value="定位至模型" onclick="centerAtModel()" />
            </div>  `;
  $("body").append(inhtml);
});

function centerAtTerrain() {
  map.setCameraView({ lat: 30.859414, lng: 116.28709, alt: 8617, heading: 18, pitch: -28 });
}

let modelTest;
function centerAtModel() {
  map.setCameraView({ lat: 33.590452, lng: 119.032184, alt: 185, heading: 359, pitch: -34 });

  //三维模型
  if (!modelTest) {
    modelTest = new mars3d.layer.TilesetLayer({
      url: "//data.mars3d.cn/3dtiles/qx-simiao/tileset.json",
      position: { alt: 80.6 },
      maximumScreenSpaceError: 1,
      maximumMemoryUsage: 1024,
      flyTo: true,
    });
    map.addLayer(modelTest);
  }
}