Issue with embedding *.slpk package in Unity

Question

Hi all,

It looks like I'm not able to add an *.slpk package successfully in my Unity project using ArcGIS Maps SDK for Unity 1.0. I created the *.slpk package in ArcGIS Pro and I'm pretty convinced that the package itself is fine because I reimported the package in ArcGIS Pro and it looked like expected. However when I added the package in Unity nothing seems to happen. Not sure if I missed something when embedding the slpk package in Unity.

I wonder if there is a "reference" *.slpk package that is guaranteed to work within Unity. Any hints would be appreciated on how to get rid of this issue.

A minor issue that I also noticed is that the "Layers" section in the Unity Inspector gets somehow messed up after adding something.

Thanks and best regards

Winfried

slpk_issue.jpg

unity_ui.jpg

ws4945894 · Answer

Hi Jade,

again this hint was very helpful. MaterialReference was exactly what I needed. The following code did the job for me 🙂

Thanks and best regards
Winfried

ArcGIS3DObjectSceneLayer boundariesLayer = 
    new ArcGIS3DObjectSceneLayer("D:/tmp/boundaries.slpk", "Boundaries Layer", 
    1.0f, true, "");

boundariesLayer.MaterialReference = 
    new Material(Resources.Load<Material>("Materials/DarkGreyMaterial"));

arcGISMap.Layers.Add(boundariesLayer);

Jade · Answer

Good to know that your data is loaded. For changing material persistently you can look at the 3D attribute sample scene. There's a variable called MaterialReference that you can interact with. You can also change building material individually.

ws4945894 · Answer

Hi Jade,

thanks for your detailed reply, that was very helpful. In fact one of the reasons for my issue seemed to be some trouble with the spatial reference. But I also had some misconfiguration with the camera that seemed to be looking in a slightly wrong direction. After starting over from scratch I found that my *.slpk package showed in Unity. So this is now understood here.

But please let me ask one more thing: As I said the imported slpk is visible in Unity but it seems difficult to get a grip on the related GameObject to change its material for example. Although I can select the slpk in the Scene View and it is visible in the Unity Inspector as GameObject_123456 or similar I was not successful to assign a different material to the imported slpk i.e. I mean I can change the material but once I return from Unity's Play Mode I end up with having the original material again...

Any hints on how to change the material persistently on an imported slpk would be appreciated.

Thanks and best regards
Winfried