/// <summary>
/// Constructor.
/// </summary>
/// <param name="inputSystem">The <see cref="Microsoft.MixedReality.Toolkit.Input.IMixedRealityInputSystem"/> instance that receives data from this provider.</param>
/// <param name="name">Friendly name of the service.</param>
/// <param name="priority">Service priority. Used to determine order of instantiation.</param>
/// <param name="profile">The service's configuration profile.</param>
public WindowsMixedRealityEyeGazeDataProvider(
IMixedRealityInputSystem inputSystem,
string name,
uint priority,
BaseMixedRealityProfile profile) : base(inputSystem, name, priority, profile)
{
eyesApiAvailable = WindowsApiChecker.IsPropertyAvailable(
"Windows.UI.Input.Spatial",
"SpatialPointerPose",
"Eyes");
#if (UNITY_WSA && DOTNETWINRT_PRESENT) || WINDOWS_UWP
if (eyesApiAvailable)
{
eyesApiAvailable &= EyesPose.IsSupported();
}
#endif // (UNITY_WSA && DOTNETWINRT_PRESENT) || WINDOWS_UWP
gazeSmoother = new EyeGazeSmoother();
// Register for these events to forward along, in case code is still registering for the obsolete actions
gazeSmoother.OnSaccade += GazeSmoother_OnSaccade;
gazeSmoother.OnSaccadeX += GazeSmoother_OnSaccadeX;
gazeSmoother.OnSaccadeY += GazeSmoother_OnSaccadeY;
}
/// <summary>
/// Triggers a prompt to let the user decide whether to permit using eye tracking
/// </summary>
private async void AskForETPermission()
{
if (!askedForETAccessAlready) // Making sure this is only triggered once
{
askedForETAccessAlready = true;
await EyesPose.RequestAccessAsync();
}
}
private static bool askedForETAccessAlready = false; // To make sure that this is only triggered once.
#endif // (UNITY_WSA && DOTNETWINRT_PRESENT) || WINDOWS_UWP
#region IMixedRealityCapabilityCheck Implementation
/// <inheritdoc />
public bool CheckCapability(MixedRealityCapability capability)
{
if (eyesApiAvailable)
{
#if (UNITY_WSA && DOTNETWINRT_PRESENT) || WINDOWS_UWP
return((capability == MixedRealityCapability.EyeTracking) && EyesPose.IsSupported());
#endif // (UNITY_WSA && DOTNETWINRT_PRESENT) || WINDOWS_UWP
}
return(false);
}
private static bool askedForETAccessAlready = false; // To make sure that this is only triggered once.
#endif // WINDOWS_UWP
#region IMixedRealityCapabilityCheck Implementation
/// <inheritdoc />
public bool CheckCapability(MixedRealityCapability capability)
{
if (WindowsApiChecker.UniversalApiContractV8_IsAvailable)
{
#if WINDOWS_UWP
return((capability == MixedRealityCapability.EyeTracking) && EyesPose.IsSupported());
#endif // WINDOWS_UWP
}
return(false);
}
private static bool askedForETAccessAlready = false; // To make sure that this is only triggered once.
#endif // UNITY_WSA
#region IMixedRealityCapabilityCheck Implementation
/// <inheritdoc />
public bool CheckCapability(MixedRealityCapability capability)
{
#if UNITY_WSA
if (typeof(EyesPose).GetMethod("IsSupported") != null)
{
return((capability == MixedRealityCapability.EyeTracking) && EyesPose.IsSupported());
}
#endif // UNITY_WSA
return(false);
}
/// <summary>
/// Check whether the Windows Eyes API is available
/// </summary>
private void CheckIfEyesApiAvailable()
{
#if (UNITY_WSA && DOTNETWINRT_PRESENT) || WINDOWS_UWP
// Make sure EyeTracking is available on the device
EyesApiAvailable = WindowsApiChecker.IsPropertyAvailable(
"Windows.UI.Input.Spatial",
"SpatialPointerPose",
"Eyes");
// If yes, ask for permission to use it
if (EyesApiAvailable)
{
EyesApiAvailable &= EyesPose.IsSupported();
}
#endif
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="inputSystem">The <see cref="Microsoft.MixedReality.Toolkit.Input.IMixedRealityInputSystem"/> instance that receives data from this provider.</param>
/// <param name="name">Friendly name of the service.</param>
/// <param name="priority">Service priority. Used to determine order of instantiation.</param>
/// <param name="profile">The service's configuration profile.</param>
public WindowsMixedRealityEyeGazeDataProvider(
IMixedRealityInputSystem inputSystem,
string name,
uint priority,
BaseMixedRealityProfile profile) : base(inputSystem, name, priority, profile)
{
eyesApiAvailable = WindowsApiChecker.IsPropertyAvailable(
"Windows.UI.Input.Spatial",
"SpatialPointerPose",
"Eyes");
#if (UNITY_WSA && DOTNETWINRT_PRESENT) || WINDOWS_UWP
if (eyesApiAvailable)
{
eyesApiAvailable &= EyesPose.IsSupported();
}
#endif // (UNITY_WSA && DOTNETWINRT_PRESENT) || WINDOWS_UWP
}
