How to Limit Tilt

@Rob

The following community forum post discusses a lot of details related to Camera tilt in CesiumJS. I think reading through this discussion might be a good place for you to start.

Limiting the tilt with the Camera object might be your best bet. The following sandcastle demo shows how this (and a lot of other Camera) functionality can be implemented:

https://sandcastle.cesium.com/index.html#c=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

Specifically, Camera.constrainedAxis might be what you are looking for. I hope this helps! Let me know if you have any other questions or concerns.

-Sam