Question

iClient3D for Cesium版本（V11.1.1） 代码： //加载图层 var tileset = viewer.scene.primitives.add(new SuperMap3D.Cesium3DTileset({ url: 'https://xxxxxxx/gis/xxx/tileset.json' })); //读取图层位置，切换相机 tileset.readyPromise.then(function (tileset) { // Set the camera to view the newly added tileset viewer.camera.viewBoundingSphere(tileset.boundingSphere, new SuperMap3D.HeadingPitchRange(0, -0.5, 0)); }); //图层加载打印日志 tileset.allTilesLoaded.addEventListener(function () { console.log('All tiles are loaded'); }); 效果正常 iClient3D for WebGL版本（V11.1.1） 代码： // //加载图层 var tileset = viewer.scene.primitives.add(new Cesium.Cesium3DTileset({ url: 'https://xxxxxx/gis/xxxx/tileset.json' })); //读取图层位置，切换相机 tileset.readyPromise.then(function (tileset) { // Set the camera to view the newly added tileset viewer.camera.viewBoundingSphere(tileset.boundingSphere, new Cesium.HeadingPitchRange(0, -0.5, 0)); }); //图层加载打印日志 tileset.allTilesLoaded.addEventListener(function () { console.log('All tiles are loaded'); }); 效果不正常，模型位置再地球内部

Answer 1

你好，iclient for cesium产品默认是圆球，3DTiles是椭球数据，需要在场景初始化前把圆球改成椭球：

var obj = [6378137.0, 6378137.0, 6356752.3142451793];
Cesium.Ellipsoid.WGS84 = Object.freeze(new Cesium.Ellipsoid(obj[0], obj[1], obj[2]));