topic Re: 3D object from Mobile Scene Package disappear in Android in .NET Maps SDK Questions

3D object from Mobile Scene Package disappear in Android

Marco_Foi — Fri, 08 Nov 2024 10:02:04 GMT

I am building a MAUI app on .NET 8 using Esri.ArcGISRuntime.Maui 200.5.0

I created a Mobile Scene Package file in ArcGIS Pro and embedded it in the app as a Resource.

I created TWO version of the file: one WITH end one WITHOUT "Reference online content"

If I use the one WITH BASEMAP get the expected result in Windows BUT NOT in Android (14):

WINDOWS:

ANDROID 14:

Sometimes, at start, the 3D model appeard but is somehow "wiped out" by the basemap drawing event

If I use the one WITHOUT I get the expected result both in Android (14) and Windows:

WINDOWS:

ANDROID:

All this tells me there is no issue with my data.. ..and it looks like a Runtime BUG.

Is it?

(I am attaching the two MobileScenePackage .mspk files)

Re: 3D object from Mobile Scene Package disappear in Android

dotMorten_esri — Fri, 08 Nov 2024 16:33:53 GMT

This is unfortunately an android quirk: The files you deploy with android aren't directly accessible with a file path, whereas on iOS and Windows you can just give it the relative path. On Android you'll need to copy the deployed data out into a local folder instead and use that path to open the data.

Also instead of using "Resource", use "Content" for the build action.

Re: 3D object from Mobile Scene Package disappear in Android

Marco_Foi — Fri, 08 Nov 2024 17:04:51 GMT

What you say is right but has nothing to do with the exposed issue.. ..or, at least, it does not took having relations.
You are right in the terms that the app has to copy the emebedded file from resources to App private storage before accesing it..

..but once there, the file is perfectly reachable using the file path.

The proof this is true is the fact that in the 4th picture the 3D model from the local .mspk file is displayed in Android:

The file is accessed and displayed.. ..unless I ALSO enable the Base map!

Re: 3D object from Mobile Scene Package disappear in Android

dotMorten_esri — Fri, 08 Nov 2024 17:23:02 GMT

aaah gotcha. I misunderstood that bit. So adding online basemap makes it so it doesn't render?
I'll have someone investigate. Thank you for sharing the data.

I'd be curious what happens if you manually add the basemap programmatically after loading the mspk.

Re: 3D object from Mobile Scene Package disappear in Android

Marco_Foi — Sat, 09 Nov 2024 18:08:15 GMT

You got the point!

Sometime, using the .mspk referencing online basemap, it happens that when the scene is rendering, for the first second, second-and-hal, the 3D object is shown.. ..then the "tide" of the basemap-rendering comes.. ..and the 3D object disappears all at once.

As for your other curiosity (adding Basemap by code) I also tried that way.

I created a Basemap object;
new Basemap(BasemapStyle.ArcGISTopographicBase)

and added to the Scene after 4 seconds of delay using an async Task and then repushing the change on MainThread.
The result is EXACTLY the same! 😞

UPDATE: the following sentences are wrong

~~I also tested with an ElevationSources injected by code after the Scene has rendered~~

~~scene.BaseSurface.ElevationSources.Add(new ArcGISTiledElevationSource(new Uri("https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer")));~~

~~The result is EXACTLY the same!~~ 😞~~..the 3D model disappears.~~

Re: 3D object from Mobile Scene Package disappear in Android

dotMorten_esri — Fri, 08 Nov 2024 17:40:59 GMT

Oh did you try without elevation? I wonder if it is just ending up underground. That would match the behavior of sometimes briefly seeing it before the elevation data loads.

Re: 3D object from Mobile Scene Package disappear in Android

Marco_Foi — Sat, 09 Nov 2024 17:56:13 GMT

ANDROID & Elevation Source & 3D-Model

I have to correct myself: ADDING an ElevationSurface to a Mobile Scene Pakage does NOT prevent a 3D model from being correctly displayed on Android devices.

This is also true if the ArcGISTiledElevationSource is added to Scene ElevationSources programmatically.

The model, if correctly placed in the Z-coordinate, is displayed in both Android and Windows:

Of course, it can also disappear underground if not correctly geolocated using ArcGIS Pro.

Re: 3D object from Mobile Scene Package disappear in Android

KoushikHajra — Thu, 14 Nov 2024 03:31:50 GMT

Hello @Marco_Foi,

Thank you for reaching out to us and sorry for the problem you're having on Android. I think I might have an idea on what is going on here. Can you please try something really quickly and see if this solves the problem for you?

SceneView has a method to override the default memory limit. If you can increase it to 2 or 4GB based on the type of device you have and try to render the mspk, does the model render then? I suspect this because that's the reason why when you have the basemap it uses more memory and thus prevents the layer from rendering.

Please let us know what you find. I hope this helps.

Regards,

Koushik

Re: 3D object from Mobile Scene Package disappear in Android

Marco_Foi — Thu, 14 Nov 2024 08:25:37 GMT

I feel tweaking with memory available to SceneView is possible just in SDK for JS.

I cannot find any reference to this feature in SDK for .NET : can you please check?

Despite this, the issue might be related to a memoy issue indeed!

Re: 3D object from Mobile Scene Package disappear in Android

KoushikHajra — Thu, 14 Nov 2024 16:19:36 GMT

Here is the doc for the method to change the memory limit: https://developers.arcgis.com/net/api-reference/api/android/Android/Esri.ArcGISRuntime.UI.Controls.SceneView.MemoryLimit.html#Esri_ArcGISRuntime_UI_Controls_SceneView_MemoryLimit.

Re: 3D object from Mobile Scene Package disappear in Android

Marco_Foi — Wed, 18 Dec 2024 15:51:46 GMT

There is NO WAY to use

Esri.ArcGISRuntime.Android

in a Esri.ArcGISRuntime.MAUI application.

Re: 3D object from Mobile Scene Package disappear in Android

dotMorten_esri — Wed, 18 Dec 2024 21:36:10 GMT

There property is in the namespace: `Esri.ArcGISRuntime.Controls.UI.SceneView`
Make sure you place the code inside an #if __ANDROID__ section since the specific property is only available on the Android target.

Re: 3D object from Mobile Scene Package disappear in Android

Marco_Foi — Thu, 19 Dec 2024 11:12:44 GMT

Can you please elaborate HOW to access that property in MAUI application?

I am currently setting this dependency in my project file:
<PackageReference Include="Esri.ArcGISRuntime.Maui" Version="200.6.0" />
Also I am defining the current namespace in my ContentPage XML
xmlns:esri="http://schemas.esri.com/arcgis/runtime/2013"

All this has worked well so far.. ..but does not give me access to the property you quoted : `Esri.ArcGISRuntime.Controls.UI.SceneView`

nor the one you probably intended to quote 😉

`Esri.ArcGISRuntime.UI.Controls.SceneView`

Do I need to install other dependencies beside Esri.ArcGISRuntime.Maui?

Re: 3D object from Mobile Scene Package disappear in Android

dotMorten_esri — Thu, 19 Dec 2024 17:30:02 GMT

The maui dependency will automatically include the dependencies that gives you access to this. Here's a bit of code I was able to write in a blank maui app that adds just the Esri.ArcGISRuntime.Maui package:

Re: 3D object from Mobile Scene Package disappear in Android

Marco_Foi — Fri, 20 Dec 2024 15:49:29 GMT

I can confirm that the issue of "disappearing MultiPatch" (MultiPatch loaded Mobile Scene Packages into SceneView in MAUI Android application) can be fixed increaseing the RAM avaialble to the Object.

This can be done inside the MapuiProgram.cs file, by adding the following line at bottom of CreateMauiApp() method:

#if ANDROID // Increase memory available to SceneView Esri.ArcGISRuntime.UI.Controls.SceneView.MemoryLimit = 4294967296; #endif

Note #1: the MemoryLimit of 4294967296bytes is 4GB and is FOUR times the default value of 1073741824 bytes (1GB) that is assigned on Tablets having at least 6-8Gb of RAM.
Note #2: A value of 2 or 3Gb might be enough to fix the issue but this was not tested.