3dtiles was disappear at some angles

[caipeng-hrv]

Can someone tell me what happened in the below pictures?

[OmarShehata]

@caipeng-hrv hard to tell without seeing the application or at least an animation, but my best guess is that this tileset is actually underneath the surface, but it's visible because globe depth testing is off by default.

You can try turning it on with:

viewer.scene.globe.depthTestAgainstTerrain = true;

You can also move your tileset above the surface either with CesiumJS like in this example: https://cesiumjs.org/Cesium/Build/Apps/Sandcastle/?src=3D%20Tiles%20Adjust%20Height.html

Or with the Cesium ion location widget if your 3D Tiles are hosted on ion. Please let me know if that fixes your issue!

In the future, please keep general questions like this in the forum (https://groups.google.com/d/forum/cesium-dev) and specific bug reports and feature requests on GitHub.

[caipeng-hrv]

@OmarShehata thank you very much, I am sorry to reply you so long.
I will try your method , and tell you the result.

[OmarShehata]

I'm closing this because I believe it's caused by the same issue here: #7879