1.首先新建一個腳本命名爲”VuforiaDefine“ 用來管理模塊的的一些公共定義
2.我們將識別圖數據放到 persistentDataPath 目錄裏面
using UnityEngine;
namespace Vuforia
{
public class VuforiaDefine
{
/// <summary>識別圖數據存放路徑</summary>
public const string IMAGES_TARGER_XML_PATH = "Vuforia/Data" + ".xml";
/// <summary>獲取識別圖數據存放路徑</summary>
public static string GetImagesTargerXmlPath()
{
string path;
if (Application.isEditor) path = Application.streamingAssetsPath + "/" + IMAGES_TARGER_XML_PATH;
else path = Application.persistentDataPath + "/" + IMAGES_TARGER_XML_PATH;
return path;
}
}
}
3.新建一個腳本名字爲”LoadImageTargets“用來加載識別圖。
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Xml;
namespace Vuforia
{
/// <summary>動態加載高通識別圖目標</summary>
public class LoadImageTargets : MonoBehaviour
{
#region 數據申明
private DataSet dataset = null;
private ObjectTracker tracker;
private bool boolLoaded = false;
private string xmlPath;
private int imageTargetCount;
private List<string> listImageTargetsName = new List<string>();
private Transform parent;
#endregion
#region Unity函數
private void Awake()
{
parent = new GameObject("ImageTargets").transform;
parent.parent = transform;
listImageTargetsName.Clear();
imageTargetCount = 0;
xmlPath = VuforiaDefine.GetImagesTargerXmlPath();
GetXML(xmlPath);
}
private void Start()
{
StartCoroutine(LoadTarget());
}
#endregion
#region 私有函數
private IEnumerator LoadTarget()
{
yield return new WaitForEndOfFrame();
if (VuforiaRuntimeUtilities.IsVuforiaEnabled() && !boolLoaded)
{
if (dataset == null)
{
tracker = TrackerManager.Instance.GetTracker<ObjectTracker>();
dataset = tracker.CreateDataSet();
}
boolLoaded = dataset.Load(xmlPath, VuforiaUnity.StorageType.STORAGE_ABSOLUTE);
tracker.ActivateDataSet(dataset);
int i = imageTargetCount;
foreach (GameObject go in FindObjectsOfType(typeof(GameObject)))
{
if (go.name == "New Game Object")
{
int index = i - 1;
if (index >= listImageTargetsName.Count || index < 0)
{
Debug.LogWarning(GetType() + "/Update() + index:索引非法!");
}
else
{
go.transform.parent = parent;
go.name =listImageTargetsName[index];
go.AddComponent<TurnOffBehaviour>();
go.AddComponent<DefaultTrackableEventHandler>();
i--;
}
}
}
}
}
private void GetXML(string path)
{
int _ImageTargetCount = 0;
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(path);
XmlNodeList nodeList = xmlDoc.SelectSingleNode("QCARConfig").ChildNodes;
foreach (XmlElement xe in nodeList)
{
Debug.Log("NAME :" + xe.Name);
foreach (XmlElement x1 in xe.ChildNodes)
{
if (x1.Name == "ImageTarget")
{
_ImageTargetCount++;
listImageTargetsName.Add(x1.GetAttribute("name"));
}
}
}
Debug.Log("識別圖總量:" + _ImageTargetCount);
imageTargetCount = _ImageTargetCount;
}
#endregion
}
}
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