topic Re: LocationDisplay not available at SceneView? in Qt Maps SDK Questions

LocationDisplay not available at SceneView?

NorbertThoden — Wed, 22 Feb 2023 10:05:20 GMT

I prepared LocationDisplay at V100.8.

At that version (and also at the current Version (100.15.1) , the LocationDisplay is available at Esri::ArcGISRuntime::MapGraphicsView.

Why isn´t the LocationDisplay available at a SceneView?

Thanks in advance!

Re: LocationDisplay not available at SceneView?

LucasDanzinger — Wed, 22 Feb 2023 15:44:33 GMT

Hi Norbert,

You are correct, LocationDisplay is currently only supported in 2D mode. There are additional challenges with 3D that need to be considered, including different viewpoint/camera modes, z values/elevation, symbol support, and more.

We implemented a similar class in our DSA example app to display current location, which you can reference - https://github.com/Esri/dynamic-situational-awareness-qt/blob/main/Shared/LocationDisplay3d.h

I'll add you to our tracking list of customers interested in getting 3D Location Display.

Thanks,

Lucas

Re: LocationDisplay not available at SceneView?

alionthego — Tue, 11 Jul 2023 07:56:47 GMT

Do you have any time frame for locationDisplay on 3d sceneView? at least for the default camera controller. This was supposed to be in the pipeline nearly 6 years ago.

Re: LocationDisplay not available at SceneView?

LucasDanzinger — Tue, 11 Jul 2023 13:45:00 GMT

It is on our list of things we would like to do, but as there are reasonable alternative workflows available, it hasn't made the cut. I unfortunately don't have a time frame as to when this will be planned. If you can email me (ldanzinger@esri.com) with some relevant use cases and business cases, I will be sure to pass that along to product management so we can hopefully get this feature request some traction.

Re: LocationDisplay not available at SceneView?

alionthego — Tue, 11 Jul 2023 23:52:09 GMT

I'm quite new to ArcGIS. Could you point me to a reasonable alternative workflow. I'm okay with getting and updating the position. Just would like to know the preferred method to represent this position on the Scene and update. Currently I am doing this using a GraphicsOverlay and then moving the position each time I receive the delegate call that position has changed.

Re: LocationDisplay not available at SceneView?

LucasDanzinger — Thu, 13 Jul 2023 17:05:31 GMT

Your approach is roughly the approach we took in an example app - https://github.com/Esri/dynamic-situational-awareness-qt/blob/main/Shared/LocationDisplay3d.h

There are some interesting challenges to work through, such as whether to drape the symbol on the ground or have it fixed at a given z value above the terrain, and what type of symbol to use.

Re: LocationDisplay not available at SceneView?

alionthego — Fri, 14 Jul 2023 08:13:51 GMT

Thanks. This approach seems to work well.

Re: LocationDisplay not available at SceneView?

AndrewWilcockson — Wed, 16 Aug 2023 03:54:53 GMT

Please add me to the list of customers who would love to see this function implemented.

We have a Map control that allows our users to switch between 2D and 3D maps, and as it stands when they switch to 3D they lose their current location display. As such I have been tasked with writing a solution to replace the LocationDisplay so that we get a consistent visualisation on both 2D and 3D maps.

The LocationDisplay on 2D maps works really well, and ideally a 3D solution that simply displayed exactly the same symbol with the same animations and draped on the 3D scene would be ideal.