ARFoundation - Get images' clear names out of ReferenceImageLibrary

Hi everyone,

I'm playing around with the Image Tracking functionality of ARFoundation. My goal is currently to instantiate different Prefabs by different images -> image1 instantiates prefab1, image2 instantiates prefab2 and so on...
For this I edited the scripts based on a post from this link:
https://forum.unity.com/threads/arfoundation-and-2d-image-target-tracking.538062/page-3#post-4556173

But for loading the Prefab I don't want to use the trackableId but the clear name of the image which is written in the library (see screenshot) like this:

Code (CSharp):

1.  protected override GameObject GetPrefab(string name)
2.         {
3.             var image = m_ReferenceImages[name];
4.             string nameClear = image.name.ToString();
5.  
6.             switch (nameClear)
7.             {
8.                 case "Rafflesia":
9.                     return m_TrackedImagePrefab;
10.                     break;
11.                 case "QRCode":
12.                     return m_TrackedImagePrefab2;
13.                     break;
14.                 default:
15.                     return null;
16.                     break;
17.             }
18.             //return m_TrackedImagePrefab;
19.         }

Is there a way to do that?
Thanks a lot!

Cheers

 

Here's how I did it. Create a new MonoBehaviour and add it as a component near your ARTrackedImageManager:

Code (CSharp):

1. private void Awake()
2. {
3.     var arTrackedImageManager = gameObject.GetComponent<ARTrackedImageManager>();
4.     arTrackedImageManager.trackedImagesChanged += OnTrackedImagesChanged;
5. }
6.  
7. private void OnTrackedImagesChanged(ARTrackedImagesChangedEventArgs ev)
8. {
9.     // Check the new tracked images
10.     foreach (ARTrackedImage image in ev.added)
11.     {
12.         XRReferenceImage refImage = image.referenceImage;
13.         string imgName = refImage.name; // this is the name in the library
14.         GameObject prefab = myPrefabsDictionary[imgName];
15.         Instantiate(prefab, image.transform);
16.     }
17. }

 

what kind of variable?
myPrefabsDictionary

 

It's a custom

Dictionary<string, GameObject>

you can populate in any previous step, just use the library images names as keys.

 

My previous code does not seem to work with the 3.x version of the Foundation.
Is anyone having the same problem? From my tests the

image.referenceImage

does not return a valid

XRReferenceImage

anymore

 

... ok it works now, the Foundation is just damn weird sometimes.
I deleted the library, closed the editor, opened it, and created the library again