Implement augmented reality sky view

[barbeau]

Basic concept is that you hold the device up to the sky and it shows you where satellites are positioned in the actual sky, based on your orientation and position.

We can utilize the open-source Google Sky Map app to implement this.

Blog about open-sourcing the project: http://googleresearch.blogspot.com/2012/01/open-sourcing-sky-map-and-collaborating.html?m=1

Forum post about implementation details of showing star positions: https://groups.google.com/forum/m/#!topic/google-sky-map/UKEURYGcQP8

[barbeau]

From the above forum, it sounds like we will need to convert the satellite azimuth and elevation values, which are in the "horizontal" coordinate system, to the right ascension and declination values, which are in the "Equatorial" coordinate system, before we add the satellites to Sky Map.

More on celestial coordinate systems is here: http://en.m.wikipedia.org/wiki/Celestial_coordinate_system

[barbeau]

So it looks like util to do any conversion already exist in com.google.android.stardroid.units package. Also, it looks like internally Sky Map uses the horizontal coordinate system, and any data provided in the equatorial coordinate system is projected to the horizontal coordinate system (see ProtobufAstronomicalSource.java, which uses methods in GeocentricCoordinates.java). So, given that GPS satellite positions are already in horizontal coordinate system, we should just be able to inject the positions directly in code without needing to do any projection.

[barbeau]

We could also use ARCore for this, although it's only supported on newer devices.

There isn't currently a location-oriented mode to ARCore, but here's an issue for the feature request that includes an early implementation: https://github.com/google-ar/arcore-android-sdk/issues/119

See commit here: https://github.com/inio/arcore-android-sdk/commit/e829c05cef0b42f882a7b896e41f66f311fffb71

[goldfndr]

GNSS View can be used to show what this might look like. (It apparently downloads positions and displays them for arbitrary locations, so it includes satellites that the GNSS receiver isn't actually receiving.)

[barbeau]

Here's a Unity ARCore implementation of shooting stars that might be useful: https://github.com/FusedVR/ARCore-Shooting-Star

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. Please comment here if it is still valid so that we can reprioritize. Thank you!

[stale[bot]]

Closing this. Please reopen if you believe it should be addressed. Thank you for your contribution.

[barbeau]

This might be useful, need to look into it: "VPS and the ARCore Geospatial API" https://io.google/2022/program/fc42307b-3b0f-4925-bfea-99499ba08088/

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. Please comment here if it is still valid so that we can reprioritize. Thank you!

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. Please comment here if it is still valid so that we can reprioritize. Thank you!

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. Please comment here if it is still valid so that we can reprioritize. Thank you!

[barbeau]

Not stale

[gdt]

FWIW, I'm -1 on implementing features that require proprietary OS components. So if it won't work on lineage/calyx/etc. and if it won't work in the fdroid build, I see it as not a good thing to add.