Vuforia 中在脚本中添加识别图被识别和丢失的回调

start

Vuforia 的unity sdk中有一个重要的脚本 DefaultTrackableEventHandler.cs， 这个脚本在场景中拖入ImageTarget的预制体时会自动挂载

using UnityEngine;
using UnityEngine.SceneManagement;
namespace Vuforia
{

    /// <summary>
    /// A custom handler that implements the ITrackableEventHandler interface.
    /// </summary>
    public class DefaultTrackableEventHandler : MonoBehaviour,
                                                ITrackableEventHandler
    {
        #region PRIVATE_MEMBER_VARIABLES

        private TrackableBehaviour mTrackableBehaviour;

        #endregion // PRIVATE_MEMBER_VARIABLES



        #region UNTIY_MONOBEHAVIOUR_METHODS

        void Start()
        {

            //easytouch = GameObject.Find ("EasyTouchControlsCanvas");
        //  easytouch.SetActive (false);
            mTrackableBehaviour = GetComponent<TrackableBehaviour>();
            if (mTrackableBehaviour)
            {
                mTrackableBehaviour.RegisterTrackableEventHandler(this);
            }

        }

        #endregion // UNTIY_MONOBEHAVIOUR_METHODS



        #region PUBLIC_METHODS

        /// <summary>
        /// Implementation of the ITrackableEventHandler function called when the
        /// tracking state