Camera position is reset when entering/exiting VR on iOS

aframevr / aframe

:a: Web framework for building virtual reality experiences.

https://aframe.io/

MIT License

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Open antoninklopp opened 3 years ago

antoninklopp commented 3 years ago

Description:

Camera position is reset when entering/exiting VR.

Repro steps :

Go to the reproductible snipped or any Aframe example with a camera position different than "0 0 0"
Enter VR
Exit VR
The scene is not at the initial position

Additional information :

A-Frame Version: 1.0.4
Platform / Device: iPhone / Safari
Reproducible Code Snippet or URL: https://glitch.com/edit/#!/fuchsia-vagabond-moose

dmarcos commented 3 years ago

That's expected behavior. The headset pose is applied to the camera entity. To position the camera use a camera rig:

 <a-entity id="rig" position="25 10 0">
  <a-entity id="camera" camera look-controls></a-entity>
</a-entity>

antoninklopp commented 3 years ago

Hi @dmarcos,

Thanks a lot for explaining how to get around the issue. However, the position is restored when exiting VR on Android but not on iOS.

This code seems to try to restore it.

Are these behaviour differences expected depending on the device?