CesiumGS / CesiumGS/cesium

Camera goes slightly underground when looking at object

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#8,896 0 comments 0 reactions 0 assignees View on GitHub
category - camera type - bug
Dominant language
JavaScript
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Description

![undegroundbug](https://user-images.githubusercontent.com/1328450/83436856-a56a6e80-a40c-11ea-892e-78ecb9127e4f.gif)

This bug exists in Cesium 1.69 as well.

Try [here](https://sandcastle.cesium.com/?src=3D%20Models.html&label=All). Zoom out a lot then rotate the camera underground.

Screen Shot 2020-06-01 at 1 40 56 PM

The farther you zoom from the tracked object, the worse it gets. Cesium man is a few pixels in the center.

Contributor guide

Open the contributing guide

Research direction

Reproduce the issue in the linked Sandcastle 3D Models example by zooming out and rotating the camera around the tracked Cesium man. Investigate the camera tracking and underground behavior; done when the camera remains above ground and the reproduction no longer worsens at greater zoom distances.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
computer-graphics
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
38/100

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