您最多选择25个主题
主题必须以中文或者字母或数字开头，可以包含连字符 (-)，并且长度不得超过35个字符
85 行
2.2 KiB
85 行
2.2 KiB
using System.Collections;
|
|
using System.Collections.Generic;
|
|
using UnityEngine;
|
|
using UnityEngine.XR.ARFoundation;
|
|
using UnityEngine.XR.ARSubsystems;
|
|
|
|
/// <summary>
|
|
/// Visualizes the eye gaze position in face space for an <see cref="ARFace"/>.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// Face space is the space where the origin is the transform of an <see cref="ARFace"/>.
|
|
/// </remarks>
|
|
[RequireComponent(typeof(ARFace))]
|
|
public class FixationPoint3DVisualizer : MonoBehaviour
|
|
{
|
|
[SerializeField]
|
|
GameObject m_FixationRayPrefab;
|
|
|
|
public GameObject fixationRayPrefab
|
|
{
|
|
get => m_FixationRayPrefab;
|
|
set => m_FixationRayPrefab = value;
|
|
}
|
|
|
|
GameObject m_FixationRayGameObject;
|
|
|
|
ARFace m_Face;
|
|
XRFaceSubsystem m_FaceSubsystem;
|
|
|
|
void Awake()
|
|
{
|
|
m_Face = GetComponent<ARFace>();
|
|
}
|
|
|
|
void CreateEyeGameObjectsIfNecessary()
|
|
{
|
|
if (m_FixationRayGameObject == null && m_Face.fixationPoint != null)
|
|
{
|
|
m_FixationRayGameObject = Instantiate(m_FixationRayPrefab, m_Face.transform);
|
|
m_FixationRayGameObject.SetActive(false);
|
|
}
|
|
}
|
|
|
|
void SetVisible(bool visible)
|
|
{
|
|
if (m_FixationRayGameObject != null)
|
|
m_FixationRayGameObject.SetActive(visible);
|
|
}
|
|
|
|
void OnEnable()
|
|
{
|
|
var faceManager = FindObjectOfType<ARFaceManager>();
|
|
if (faceManager != null && faceManager.subsystem != null && faceManager.descriptor.supportsEyeTracking)
|
|
{
|
|
m_FaceSubsystem = (XRFaceSubsystem)faceManager.subsystem;
|
|
m_Face.updated += OnUpdated;
|
|
}
|
|
else
|
|
{
|
|
enabled = false;
|
|
}
|
|
}
|
|
|
|
void OnDisable()
|
|
{
|
|
m_Face.updated -= OnUpdated;
|
|
SetVisible(false);
|
|
}
|
|
|
|
void OnUpdated(ARFaceUpdatedEventArgs eventArgs)
|
|
{
|
|
CreateEyeGameObjectsIfNecessary();
|
|
SetVisible((m_Face.trackingState == TrackingState.Tracking) && (ARSession.state > ARSessionState.Ready));
|
|
UpdateFixationPoint();
|
|
}
|
|
|
|
void UpdateFixationPoint()
|
|
{
|
|
if (m_FixationRayGameObject != null)
|
|
{
|
|
m_FixationRayGameObject.transform.LookAt(m_Face.fixationPoint.position);
|
|
}
|
|
}
|
|
|
|
}
|