Event fired when user "see" an object (location based)

[dpayet]

Do you want to request a feature or report a bug?
A feature

What is the current behavior?
Know if a location based object is viewed or not

If the current behavior is a bug, please provide the steps to reproduce.

Please mention other relevant information such as the browser version, Operating System and Device Name

What is the expected behavior?
A fired event if a user "see" a object (example a gltf item)

If this is a feature request, what is motivation or use case for changing the behavior?

[dpayet]

Sorry, post too fast.

Thanks you for your advice :)