/// <summary>
/// Returns the data that describes the convergence point of the eyes this frame. See the description of the
/// `GazeConvergenceData` for more detail on how to use this information.
/// </summary>
/// <returns>A struct describing the gaze convergence in HMD-relative space.</returns>
public GazeConvergenceData GetGazeConvergence_Immediate()
{
GazeConvergenceData localConvergence = FoveManager.GetLocalGazeConvergence_Immediate();
var localRay = localConvergence.ray;
return(new GazeConvergenceData(TransformLocalRay(localRay), localConvergence.distance));
}
virtual protected bool CanSee()
{
if (!eyeConvergeRay.IsValid)
{
return(false);
}
var left = FoveManager.GetEyeState(Eye.Left);
var right = FoveManager.GetEyeState(Eye.Right);
var gazeCastPolicy = FoveManager.GazeCastPolicy;
switch (gazeCastPolicy)
{
case GazeCastPolicy.DismissBothEyeClosed:
return((left.IsValid && left.value == EyeState.Opened) || (right.IsValid && right.value == EyeState.Opened));
case GazeCastPolicy.DismissOneEyeClosed:
return(left.IsValid && right.IsValid && left.value == EyeState.Opened && right.value == EyeState.Opened);
case GazeCastPolicy.NeverDismiss:
return(true);
}
throw new NotImplementedException("Unknown gaze cast policy '" + gazeCastPolicy + "'");
}
virtual protected void OnDisable()
{
FoveManager.UnregisterInterface(this);
FoveManager.PoseUpdate.RemoveListener(UpdatePoseData);
FoveManager.EyeProjectionUpdate.RemoveListener(UpdateGazeMatrices);
FoveManager.EyePositionUpdate.RemoveListener(UpdateEyePosition);
FoveManager.GazeUpdate.RemoveListener(UpdateGaze);
}
/// <summary>
/// Get a set of Unity Ray objects which describe where in the scene each of the user's eyes are looking right
/// now.</summary>
/// <returns>The set of Unity Ray objects describing the user's eye gaze.</returns>
/// <remarks>Typically gaze data is cached at the start of each frame to yield consistent results for each
/// frame. This function ignores the cached value and creates a new struct every time, so be careful.</remarks>
public EyeRays GetGazeRays_Immediate()
{
UnityRay left, right;
CalculateGazeRays(out left, out right, FoveManager.GetLeftEyeVector_Immediate(), FoveManager.GetRightEyeVector_Immediate());
return(new EyeRays(left, right));
}
private void UnregisterCallbacks()
{
FoveManager.UnregisterInterface(this);
FoveManager.PoseUpdate.RemoveListener(UpdatePoseData);
FoveManager.EyeProjectionUpdate.RemoveListener(UpdateGazeMatrices);
FoveManager.EyePositionUpdate.RemoveListener(UpdateEyePosition);
FoveManager.GazeUpdate.RemoveListener(UpdateGaze);
}
virtual protected void OnDisable()
{
FoveManager.UnregisterInterface(this);
FoveManager.AddInUpdate -= UpdateData;
if (registerCameraObject)
{
RemoveCameraObject();
}
}
/// <summary>
/// Returns the current convergence point of the eyes. See the description of the
/// <see cref="GazeConvergenceData"/> for more detail on how to use this information.
/// By default, it returns the value of the current frame.
/// Set <paramref name="immediate"/> to <c>true</c> to re-query the latest value to the HMD.
/// </summary>
/// <returns>The gaze convergence in world space.</returns>
public GazeConvergenceData GetGazeConvergence(bool immediate = false)
{
if (!immediate)
{
return(_eyeConverge);
}
var localGaze = FoveManager.GetHMDGazeConvergence(true);
return(GetWorldSpaceConvergence(ref localGaze.ray, localGaze.distance));
}
virtual protected void UpdateGaze()
{
if (!fetchGaze)
{
eyeConvergeRay.error = ErrorCode.Data_NoUpdate;
eyeRays.left.error = ErrorCode.Data_NoUpdate;
eyeRays.right.error = ErrorCode.Data_NoUpdate;
}
eyeConvergeRay = GetWorldSpaceConvergence(FoveManager.GetHmdCombinedGazeRay());
eyeRays.left = CalculateWorldGazeVector(eyeOffsets.left, FoveManager.GetHmdGazeVector(Eye.Left));
eyeRays.right = CalculateWorldGazeVector(eyeOffsets.right, FoveManager.GetHmdGazeVector(Eye.Right));
}
private static void EnsureInitialization()
{
if (m_sResearch != null)
{
return;
}
FoveManager.RegisterAddIn(AcceptAddIn);
FoveManager.AddInUpdate += UpdateImages;
m_sEyesTexture = null;
m_sPositionTexture = null;
m_sResearch.RegisterCapabilities(ResearchCapabilities.EyeImage | ResearchCapabilities.PositionImage);
}
private void RecreateLayer()
{
FoveManager.UnregisterInterface(this);
var createInfo = new CompositorLayerCreateInfo
{
alphaMode = AlphaMode.Auto,
disableDistortion = disableDistortion,
disableFading = disableFading,
disableTimewarp = disableTimewarp,
type = layerType
};
FoveManager.RegisterInterface(createInfo, this);
}
private static void InitializeStaticMembers()
{
m_sInstance = FindObjectOfType <FoveManager>();
if (m_sInstance == null)
{
m_sInstance = new GameObject("~FOVE Manager").AddComponent <FoveManager>();
DontDestroyOnLoad(m_sInstance);
}
m_worldScale = FoveSettings.WorldScale;
m_renderScale = FoveSettings.RenderScale;
m_submitNativeFunc = GetSubmitFunctionPtr();
m_wfrpNativeFunc = GetWfrpFunctionPtr();
}
virtual protected void UpdatePoseData()
{
if (fetchOrientation)
{
hmdOrientation = FoveManager.GetHmdRotation();
}
if (fetchPosition)
{
hmdPosition = FoveManager.GetHmdPosition(poseType == PlayerPose.Standing);
}
transform.localPosition = hmdPosition;
transform.localRotation = hmdOrientation;
}
// Private callbacks and support for HMD events
private void RegisterEventCallbacks()
{
var createInfo = new CompositorLayerCreateInfo
{
alphaMode = AlphaMode.Auto,
disableDistortion = disableDistortion,
disableFading = disableFading,
disableTimewarp = disableTimewarp,
type = layerType
};
FoveManager.RegisterInterface(createInfo, this);
FoveManager.PoseUpdate.AddListener(UpdatePoseData);
FoveManager.EyeProjectionUpdate.AddListener(UpdateGazeMatrices);
FoveManager.EyePositionUpdate.AddListener(UpdateEyePosition);
FoveManager.GazeUpdate.AddListener(UpdateGaze);
}
virtual protected bool CanSee()
{
var closedEyes = FoveManager.CheckEyesClosed();
switch (gazeCastPolicy)
{
case GazeCastPolicy.DismissWhenBothEyesClosed:
return(closedEyes != Eye.Both);
case GazeCastPolicy.DismissWhenOneEyeClosed:
return(closedEyes == Eye.Neither);
case GazeCastPolicy.NeverDismiss:
return(true);
}
throw new NotImplementedException("Unknown gaze cast policy '" + gazeCastPolicy + "'");
}
/// <summary>
/// Get eye rays describing where in the scene each of the user's eyes are looking.
/// By default, it returns the value of the current frame.
/// Set <paramref name="immediate"/> to <c>true</c> to re-query the latest value to the HMD.
/// </summary>
/// <returns>Eye rays describing the user's gaze in world space.</returns>
public EyeRays GetGazeRays(bool immediate = false)
{
if (!immediate)
{
return(new EyeRays(_eyeRayLeft, _eyeRayRight));
}
var leftEyeVector = fetchGaze? FoveManager.GetLeftEyeVector(true): Vector3.forward;
var rightEyeVector = fetchGaze? FoveManager.GetRightEyeVector(true): Vector3.forward;
var leftEyeOffset = FoveManager.GetLeftEyeOffset(true);
var rightEyeOffset = FoveManager.GetRightEyeVector(true);
Ray left, right;
CalculateGazeRays(ref leftEyeOffset, ref rightEyeOffset, ref leftEyeVector, ref rightEyeVector, out left, out right);
return(new EyeRays(left, right));
}
private static void InitializeStaticMembers()
{
m_sInstance = FindObjectOfType <FoveManager>();
if (m_sInstance == null)
{
m_sInstance = new GameObject("~FOVE Manager").AddComponent <FoveManager>();
DontDestroyOnLoad(m_sInstance);
}
m_sRenderCamera = m_sInstance.GetComponentInChildren <Camera>();
if (m_sRenderCamera == null)
{
m_sRenderCamera = new GameObject("~FOVE Renderer").AddComponent <Camera>();
m_sRenderCamera.transform.SetParent(m_sInstance.transform);
m_sRenderCamera.enabled = false;
}
m_worldScale = FoveSettings.WorldScale;
m_renderScale = FoveSettings.RenderScale;
m_submitNativeFunc = GetSubmitFunctionPtr();
m_wfrpNativeFunc = GetWfrpFunctionPtr();
}
private void UpdateGazeMatrices()
{
FoveManager.GetProjectionMatrices(_cam.nearClipPlane, _cam.farClipPlane, ref _stereoData[0].projection, ref _stereoData[1].projection);
}
virtual protected void UpdateViewParameters()
{
eyeOffsets = FoveManager.GetEyeOffsets();
projectionMatrices = FoveManager.GetProjectionMatrices(cam.nearClipPlane, cam.farClipPlane);
}
private bool CanSee()
{
return(FoveManager.CheckEyesClosed() != Eye.Both);
}
