topic Re: Adding 3D Buildings to Unity in ArcGIS Maps SDK for Unity Questions

Adding 3D Buildings to Unity

AndrewMcLane — Thu, 09 May 2024 16:59:51 GMT

I am creating a map based experience in Unity. I want to add a 3D buildings layer to the map. It is a location based game, so I need there to be 3D buildings wherever a user is in the world. I found this scene layer but I am getting errors when I add it to the layer like this

ArcGISBuildingSceneLayer buildingSceneLayer = new ArcGISBuildingSceneLayer(
    "https://basemaps3d.arcgis.com/arcgis/rest/services/OpenStreetMap3D_Buildings_v1/SceneServer", APIKey);
map.Layers.Add(buildingSceneLayer);

The error is 'invalid json'.
Question 1: how do I add basic 3D buildings to the map wherever in the world a user is located?

Question 2: If I wanted to alter the appearance of these buildings (ie. make them shorter or make the top half of the buildings fade into the air (transparent)), how would I go about doing this?

Re: Adding 3D Buildings to Unity

and1 — Thu, 09 May 2024 18:22:35 GMT

It seems that is the incorrect layer type. Please make sure the layer type is a 3DObjectSceneLayer instead of a BuildingSceneLayer. And also be sure you are in Global mode.

So it would be:

var buildingLayer = new Esri.GameEngine.Layers.ArcGIS3DObjectSceneLayer("https://basemaps3d.arcgis.com/arcgis/rest/services/OpenStreetMap3D_Buildings_v1/SceneServer", "Building Layer", 1.0f, true, ""); map.Layers.Add(buildingLayer);

If you want to make the building transparent as a whole, you can try the example below:

buildingLayer.Opacity = 0.5f;

But I don't think you can alter the individual appearance/height of these buildings.

Hope that helps!

Re: Adding 3D Buildings to Unity

AndrewMcLane — Thu, 09 May 2024 18:31:39 GMT

Thanks for responding, @and1! I have altered my code to use the type you suggested and also changed the map type to global. I am getting a different error this time. It's
"ArcGISLayerViewState Building Layer changed to : Error (Layer type is not supported.)
Additional info: Error processing service metadata response.
Unsupported scene layer version
UnityEngine.Debug:Log (object)"

Re: Adding 3D Buildings to Unity

and1 — Thu, 09 May 2024 19:14:51 GMT

Hi @AndrewMcLane , what version of the ArcGIS Maps SDK plugin are you currently using for this project?

Re: Adding 3D Buildings to Unity

and1 — Thu, 09 May 2024 21:04:26 GMT

We just started to support OSM layers in version 1.5. Any versions earlier than that will not work. If you have 1.4 or below, you could update it to the latest version. The current release package can be found here.

Re: Adding 3D Buildings to Unity

AndrewMcLane — Fri, 10 May 2024 17:14:13 GMT

Yes! Thank you. This resolved it.

Re: Adding 3D Buildings to Unity

AndrewMcLane — Fri, 10 May 2024 17:15:07 GMT

This is also part of the solution, @and1 ! Thank you!