Camera jumps when tracking entity in inertial reference frame
- Dominant language
- JavaScript
- Stars
- 15.8k
- Forks
- 3.9k
- Avg merge
- 4d 6h
- Merged PRs (30d)
- 34
Description
Reported on the forum: https://community.cesium.com/t/camera-direction-changes-when-tracking-the-entity/26915
> Hello, I am trying to load CZML data with CesiumJS and track it with a camera.
> However, I’ve noticed that the camera direction changes unexpectedly at times.
> This occurs between 47 and 48 seconds in the example below.
[Sandcastle](https://sandcastle.cesium.com/#c=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)
Contributor guide
Research direction
Start with the linked Sandcastle reproduction and observe the camera while tracking the entity, especially between 47 and 48 seconds. Trace the CesiumJS camera-tracking behavior for inertial reference frames; done means the camera direction remains stable instead of changing unexpectedly.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript
- Domain
- frontend, web-dev
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100