vuforia模型脱卡功能的实现

vuforia模型脱卡功能的实现

这是转载，转载，转载，附原地址：

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实现思路是这样：

识别图视野脱离之后，将被识别的物体不再作为识别图的子物体，转而作为相机的子物体，并置于屏幕中央位置。
1.首先，
写个小script： [C#]  纯文本查看  复制代码 ?

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using UnityEngine; using Vuforia; public class pageNotFound404 : MonoBehaviour,ITrackableEventHandler {          private TrackableBehaviour mTrackableBehaviour;          public Transform Target; //识别物          Vector3 imgPos= new Vector3 (0,0.372f,0); //识别图上的位置          Vector3 camPos= new Vector3 (0,0,500); //脱卡后在屏幕中的位置          //这俩值，具体多少得自己调，模型尺寸、重心不同          bool isFirstTime= true ;          void Start()          {                  mTrackableBehaviour = GetComponent<TrackableBehaviour>();                  if (mTrackableBehaviour)                  {                          mTrackableBehaviour.RegisterTrackableEventHandler( this );                  }                  Target .GetComponent<MeshRenderer>().enabled= false ; //起始时不显示          }          public void OnTrackableStateChanged(                  TrackableBehaviour.Status previousStatus,                  TrackableBehaviour.Status newStatus)          {                  if (newStatus == TrackableBehaviour.Status.DETECTED ||                          newStatus == TrackableBehaviour.Status.TRACKED ||                          newStatus == TrackableBehaviour.Status.EXTENDED_TRACKED)                  {                          //视野内发现识别图时                          Target .GetComponent<MeshRenderer>().enabled= true ;                          Target.parent = this .transform ;                          Target.localPosition = imgPos;                          Target.localRotation = Quaternion.identity;                          isFirstTime = false ;                  }                  else                  {                          //视野内没有识别图时，这里我是把位置和旋转都归零了，如果不做处理，可以                          if (!isFirstTime){                          Target.parent=Camera.main .transform;                          Target.localPosition= camPos;                          Target.localRotation = Quaternion.identity;                          }                  }          } }

 

2.然后，如图，将我们的小脚本挂载在 Image Target 上，并将 DefaultTrackableEventHandler 去除掉（remove component）
3.测试