unity xrhand 手势识别

youtube平台上的手势识别的视频教程
个人总结教程：
1，导入XRHands和XRInteractionToolkit插件（我使用Pico开发，先导入了Pico插件）
2，打包HandGestures场景
3，新建手势形状

4，在VR设备里比划需要识别的手势，插件目前只支持静态手势，保持手势不动，这时观察记录UI面板上五个手指对应的值。

5，将记录的五根手指对应的值添加填入，越详细越准确。比如下图小手指Targets我加了两个。可以适当的移动旋转手势，设置比较合理的区间范围。

6，在空物体上挂StaticHandGesture脚本，对应的解释如下图
（1）插件没有手势保持事件，自己加一下，代码放在最后了

（2）想用Pico提供的手势模型
。将手的预制体放到此节点
。将手节点的名字按照插件手节点的名字进行重命名
。将R_Wrist节点拖到RootTransform，点击FindJoints

增加手势保持触发事件

using UnityEngine.Events;
using UnityEngine.UI;
using UnityEngine.XR.Hands.Gestures;

namespace UnityEngine.XR.Hands.Samples.GestureSample
{
   
    /// <summary>
    /// A gesture that detects when a hand is held in a static shape and orientation for a minimum amount of time.
    /// </summary>
    public class StaticHandGesture : MonoBehaviour
    {
   
        [SerializeField]
        [Tooltip("The hand tracking events component to subscribe to receive updated joint data to be used for gesture detection.")]
        XRHandTrackingEvents m_HandTrackingEvents;

        [SerializeField]
        [Tooltip("The hand shape or pose that must be detected for the gesture to be performed.")]
        ScriptableObject m_HandShapeOrPose;

        [SerializeField]
        [Tooltip("The target Transform to user for target conditions in the hand shape or pose.")]
        Transform m_TargetTransform;

        //[SerializeField]
        //[Tooltip("The image component that draws the background for gesture icons.")]