Script untuk pengaturan focus manager pada unity3d dan vuforia. Add script ini di focus button yang ada collidernya

FocusManager.cs

using UnityEngine;
using Vuforia;

public class FocusManager : MonoBehaviour {

    private void Start()
    {
        BackToAuto();
    }

    //prevent to invoking many times;
    bool invoking = false;
    void OnMouseDown()
    {
        //focussing camera
        CameraDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_TRIGGERAUTO);
        if (!invoking)
        {
            Invoke("BackToAuto", 3);
            invoking = true;
        }
    }

    //back to autofocus
    void BackToAuto()
    {
        invoking = false;
        CameraDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);
    }

}