Cesium: Follow-camera

[rahwang]

Multiple users have asked for something like a follow camera, or a way to follow tracked-entities at a set zoom level or displacement.

Especially since we're currently working on a camera model like that in the cesium arcade game, it would be nice to potentially add such functionality to Cesium.

[rahwang]

Some forum requests:

https://groups.google.com/forum/?hl=en#!topic/cesium-dev/b9GZDrVIIDk
https://groups.google.com/d/msg/cesium-dev/-mDNh2qlTZQ/8Zk9zbQUAQAJ
https://groups.google.com/d/msg/cesium-dev/mW0VxrU3yhA/JYJFjJ4GBQAJ

See also, @mramato 's gist example:
https://groups.google.com/d/msg/cesium-dev/-mDNh2qlTZQ/WOIPQHVNAgAJ

[dotansimha]

@rahwang sounds amazing! is that already under development?

[ggetz]

@dotansimha If you have the time, we'd be more than happy to provide guidance or review a pull request for your contribution! Checkout our Contributor's Guide for how to get started.

We do have some starter code put together as part of our drone game we could share if you're interested in working on this feature.

[ggetz]

Brought up on the forum https://groups.google.com/forum/#!topic/cesium-dev/_RXV4dAhR4w

[qandeelabbassi]

@ggetz I would love to contribute to this feature and if you can provide me the starter code then it would be helpful.

[OmarShehata]

Hey @qandeelabbassi, that's awesome that you want to work on this! I put together a gist showing the example we had for this:

https://gist.github.com/OmarShehata/eeaa2fae407739f27a5cc27cdb6679ab

CameraTracking.js was the actual class, and I've included the other file as an example of how it was used. This was pretty experimental so don't feel like you have to stick to that structure in any way. Feel free to also open up a thread on the forum to share your progress/get feedback as you work.

Excited to see what you come up with!

[qandeelabbassi]

Hello @OmarShehata , thanks for the gist 👍 , I will see what i can do with it :) . I will open a thread in the forum too after writing some basic code. Btw, what's wrong with the code you have already written for the arcade game? Can't we integrate it with cesium as it is? Just want to know if there are any problems.

[OmarShehata]

@qandeelabbassi I think it's mostly just that the code needs to be cleaned up, tested, and have test cases written for it etc.

[wisdomware]

I just wanted to say thanks to the folks who are working on this "Chase Cam" feature. I can't wait to use it in the near future.

Best!

[OmarShehata]

This came up again twice this week:

• https://groups.google.com/forum/#!topic/cesium-dev/PsTEdWH5RbU
• https://groups.google.com/forum/#!topic/cesium-dev/JV-D3letsKA