Trigger event on Target recognition

Question

Hello everyone,

Is there any class or interface that would allow me to trigger an event when my application recognize a target ?

I want to launch an animation when the target is recognized (a slide transition, that would occur only once).

Answer 1

hi，

of course.(https://www.easyar.com/doc/EasyAR%20SDK/Getting%20Started/2.0/Setting-up-EasyAR-Unity-SDK.html)

public class EasyImageTargetBehaviour : ImageTargetBehaviour
{
    protected override void Awake()
    {
        base.Awake();
        TargetFound += OnTargetFound;
        TargetLost += OnTargetLost;
        TargetLoad += OnTargetLoad;
        TargetUnload += OnTargetUnload;
    }

    void OnTargetFound(TargetAbstractBehaviour behaviour)
    {
        Debug.Log("Found: " + Target.Id);
    }

    void OnTargetLost(TargetAbstractBehaviour behaviour)
    {
        Debug.Log("Lost: " + Target.Id);
    }

    void OnTargetLoad(ImageTargetBaseBehaviour behaviour, ImageTrackerBaseBehaviour tracker, bool status)
    {
        Debug.Log("Load target (" + status + "): " + Target.Id + " (" + Target.Name + ") " + " -> " + tracker);
    }

    void OnTargetUnload(ImageTargetBaseBehaviour behaviour, ImageTrackerBaseBehaviour tracker, bool status)
    {
        Debug.Log("Unload target (" + status + "): " + Target.Id + " (" + Target.Name + ") " + " -> " + tracker);
    }
}

Comments

Thank you ! It works just fine.

---

Well, sorry for bothering you again, but...
It works well, perfect, but my target randomly switch size. Sometimes it will be 1,1 it's nice, I can see my GameObject attached to it, but sometimes it will go 0,0 and nothing is actually displayed.
Size seems to change every time I get focus on my target. And even stranger, when I try to set it by script (Mytarget.Size = new Vector2(1, 1), and mytarget.transform.localScale = new Vector3(1, 1, 1), if I Debug.Log the size, it will displays (mytarget.Size = (1, 1), but in the Unity Inspector, it will actually be 0,0.

EDIT : I manage to still display my elements by not setting the target as a Parent. But I would still appreciate to understand how all of this work.

---

Hi, I am unable to find updated documentation related to tracking events for the api 4.x

---

Hello, is there an equivalent of this class for version 4.30 of easyar.
Thank you