void Update()
{
var provider = EyetrackingProvider ?? TobiiXR.Provider;
var gazeModifierFilter = TobiiXR.Internal.Filter as GazeModifierFilter;
var eyeTrackingData = EyeTrackingDataHelper.Clone(provider.EyeTrackingData);
if (ScaleAffectedByPrecision && gazeModifierFilter != null)
{
gazeModifierFilter.FilterAccuracyOnly(eyeTrackingData);
}
var gazeRay = eyeTrackingData.GazeRay;
_spriteRenderer.enabled = gazeRay.IsValid;
if (_spriteRenderer.enabled == false)
{
return;
}
SetPositionAndScale(gazeRay);
if (ScaleAffectedByPrecision && gazeModifierFilter != null)
{
UpdatePrecisionScale(gazeModifierFilter.GetMaxPrecisionAngleDegrees(eyeTrackingData.GazeRay.Direction));
}
}
public void Tick()
{
#if TOBIIXR_HTCPROVIDER
_hmdToWorldTransformer.Tick();
EnsureHTCFrameworkRunning();
if (SRanipal_Eye_Framework.Status != SRanipal_Eye_Framework.FrameworkStatus.WORKING)
{
return;
}
EyeTrackingData.Timestamp = Time.unscaledTime;
EyeTrackingData.GazeRay.IsValid = SRanipal_Eye.GetGazeRay(GazeIndex.COMBINE, out EyeTrackingData.GazeRay.Origin, out EyeTrackingData.GazeRay.Direction);
// Blink
float eyeOpenness = 0;
var eyeOpennessIsValid = SRanipal_Eye.GetEyeOpenness(EyeIndex.LEFT, out eyeOpenness);
EyeTrackingData.IsLeftEyeBlinking = !eyeOpennessIsValid || eyeOpenness < 0.1;
eyeOpennessIsValid = SRanipal_Eye.GetEyeOpenness(EyeIndex.RIGHT, out eyeOpenness);
EyeTrackingData.IsRightEyeBlinking = !eyeOpennessIsValid || eyeOpenness < 0.1;
// Convergence distance
Vector3 leftRayOrigin, rightRayOrigin, leftRayDirection, rightRayDirection;
var leftRayValid = SRanipal_Eye.GetGazeRay(GazeIndex.LEFT, out leftRayOrigin, out leftRayDirection);
var rightRayValid = SRanipal_Eye.GetGazeRay(GazeIndex.RIGHT, out rightRayOrigin, out rightRayDirection);
if (leftRayValid && rightRayValid)
{
EyeTrackingData.ConvergenceDistanceIsValid = true;
var convergenceDistance_mm = Convergence.CalculateDistance(
leftRayOrigin * 1000f,
leftRayDirection,
rightRayOrigin * 1000f,
rightRayDirection
);
EyeTrackingData.ConvergenceDistance = convergenceDistance_mm / 1000f; // Convert to meters
}
else
{
EyeTrackingData.ConvergenceDistanceIsValid = false;
}
// Transform to world space
_localToWorldMatrix = _hmdToWorldTransformer.GetLocalToWorldMatrix();
EyeTrackingDataHelper.TransformGazeData(EyeTrackingData, _localToWorldMatrix);
#endif
}
public void GetEyeTrackingDataLocal(TobiiXR_EyeTrackingData data)
{
EyeTrackingDataHelper.Copy(_eyeTrackingDataLocal, data);
}