Leap Motion Orion & how to activate On Click() of a Unity 5 UI > button?

[LeapFanMan]

Leap Motion Orion & how to activate On Click() of a Unity 5 UI button? ( get what do do after in C#, but I need to know how to do this from the Leap Motion Orion beta side of the equation).

Using Unity 5 Pro for this example.

How do I do the following in Unity?

1. add a UI > Button to the 3D scene
2. create C# code so that when I press with a finger, that button activates and thus the On Click() event fires.
   3 (from here I get what to do)

Thanks in advance.

[Joe_Ward]

I think you can just add a collider to the button. The rigid bodies in the fingers can collide with it and you can use OnCollisionEnter or OnTriggerEnter to do the click. (It has been awhile since I tried this, but that's the gist of it.)

[LeapFanMan]

Okay, that's what I'm doing now. I was not sure it was best practice.

Thanks.

I'll keep heading then down this path.

[Joe_Ward]

The trickier part is adding affordances so that the user can intuitively tell that they are pushing the button. You can use a sphere collider to tell when a finger tip is near the button and use that as a sort of "hover". One thing the V2 widgets did well, was to put a spring on the button so that the user could tell they were pushing it before actually clicking.

[LeapFanMan]

Thank you Joe. That's a good point. I'll work to incorporate that into the visual feedback portion. (Good idea on the Sphere Collider).

[Frikster]

@Joe_Ward
Hi, I'm trying to do the same thing:

I have added a UI Button to the scene and placed the Button object in the "First Selected" parameter in the Event System. So when I press the spacebar it works - I additionally have the button onclick calling a script which works. However, I cannot get the LEAP hands to interact with the button despite the button having a box collider and is trigger enabled and having a script attached to the button that looks like this:

using UnityEngine;
using System.Collections;
public class buttonTest : MonoBehaviour {
    void OnTriggerEnter(Collider col)
    {
        switch (col.tag)
        {
            case "Button":
                Debug.Log("BUTTON TRIGGERED");
                break;
        }
    }
    void OnCollisonEnter(Collider col)
    {
        switch (col.tag)
        {
            case "Button":
                Debug.Log("BUTTON COLLISION");
                break;
        }
    }
}

Why are neither OnTriggerEnter or OnCollisonEnter triggered when I try to click the button with the LEAP hands?

[Frikster]

Doing the following showed me that the hand "bone" is being passed as the collider, not the button. What can I say, I'm new at this.

void OnTriggerEnter(Collider col)
{
    Debug.Log("TRIGGER "+col);
    switch (col.tag)
    {
        case "Button":
            Debug.Log("BUTTON TRIGGERED");
            break;
    }
}

I get "TRIGGER bone1" when I reach out for the stationary button, so I seem to have a clunky way to press buttons now. Cant wait for the V2 widgets to be ported to Orion to make this sexier!