Is it possible to dig out areas on a terrain and replace with 3D Tiles? i.e Simulating a mining pit.
I can see that by using clipping planes you can cut out an area but was wondering if there was a more simpler way. This would also need to be staged so switching terrain proivders will be problematic.
Clipping planes would be the common way to do this. We are working on making this simpler, here’s a branch that’s in-progress: https://github.com/CesiumGS/cesium/pull/8915. If you have a chance to test that that’ll help!
We did recently add the ability to visualize underground data: https://cesium.com/blog/2020/06/16/visualizing-underground/ so you can simply fade out the ground as the camera gets closer, which may be another easy approach.
Let me know if this works for you. These code examples may be useful for the second approach: