VR菜单-面前的UI，类似于SteamVR ROOM内的菜单

把这个脚本挂在你的菜单Image上

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class NewBehaviourScript : MonoBehaviour 
{
    public Transform eyesCamera;
    private RectTransform rect;
    void Start() 
     {
          rect = this.GetComponent<RectTransform>();
          Vector3 tr = eyesCamera.position + eyesCamera.forward * 2 + eyesCamera.up * (-0.2f); ;
          tr.y = 15;
          rect.position = tr;
          Quaternion targetQua = eyesCamera.rotation;
          targetQua.x = 0f;
          targetQua.z = 0f;
          rect.rotation = targetQua;
     }
}

你需要调一下里面的数值，让它符合你的工程。