internal static void HMDWriteEye(this XmlWriter file, IVRGazeDataEye eye, string name)
{
file.WriteStartElement(name);
file.WriteWithValid("GazeDirection", eye.GazeDirection.ToString(FORMAT_FLOAT), eye.GazeDirectionValid);
file.WriteWithValid("GazeOrigin", eye.GazeOrigin.ToString(FORMAT_FLOAT), eye.GazeOriginValid);
file.WriteWithValid("PupilDiameter", eye.PupilDiameter.ToString(FORMAT_FLOAT), eye.PupilDiameterValid);
file.WriteRay(eye.GazeRayWorld, eye.GazeRayWorldValid, "GazeRayWorld");
file.WriteEndElement();
}
private void WriteTobiiEyeData(string header, IVRGazeDataEye eye)
{
SaveInfo.AddToNestedDictionary(header, "PupilDiameter", eye.PupilDiameter.ToString(FORMAT_FLOAT));
SaveInfo.AddToNestedDictionary(header, "PupilPosition_X", eye.PupilPosiitionInTrackingArea.x.ToString(FORMAT_FLOAT));
SaveInfo.AddToNestedDictionary(header, "PupilPosition_Y", eye.PupilPosiitionInTrackingArea.y.ToString(FORMAT_FLOAT));
SaveInfo.AddToNestedDictionary(header, "RayOrigin_X", eye.GazeRayWorld.origin.x.ToString(FORMAT_FLOAT));
SaveInfo.AddToNestedDictionary(header, "RayOrigin_Y", eye.GazeRayWorld.origin.y.ToString(FORMAT_FLOAT));
SaveInfo.AddToNestedDictionary(header, "RayOrigin_Z", eye.GazeRayWorld.origin.z.ToString(FORMAT_FLOAT));
SaveInfo.AddToNestedDictionary(header, "RayDirection_X", eye.GazeRayWorld.direction.x.ToString(FORMAT_FLOAT));
SaveInfo.AddToNestedDictionary(header, "RayDirection_Y", eye.GazeRayWorld.direction.y.ToString(FORMAT_FLOAT));
SaveInfo.AddToNestedDictionary(header, "RayDirection_Z", eye.GazeRayWorld.direction.z.ToString(FORMAT_FLOAT));
}
/// <summary>
/// Animate facial expression blend shapes.
/// </summary>
/// <param name="newDirectionL">The gaze direction for the left eye.</param>
/// <param name="newDirectionR">The gaze direction for the right eye.</param>
/// <param name="eyeDataLeft">Eye data for the left eye.</param>
/// <param name="eyeDataRight">Eye data for the right eye.</param>
private void AnimateEyeLid(IVRGazeDataEye leftEye, IVRGazeDataEye rightEye)
{
// Determine if Eyes are closed
//var leftEyeClosed = leftEye.PupilPosiitionInTrackingAreaValid ? false : true;
//var rightEyeClosed = rightEye.PupilPosiitionInTrackingAreaValid ? false : true;
// If eye openness data is invalid use last value.\
//TobiiXR has useful function to determine if eye is blinking.
var leftEyeClosed = (TobiiXR.EyeTrackingData.Left.EyeOpennessIsValid) ? (TobiiXR.EyeTrackingData.Left.EyeOpenness < 0.5f) : _leftEyeClosed;
var rightEyeClosed = (TobiiXR.EyeTrackingData.Right.EyeOpennessIsValid) ? (TobiiXR.EyeTrackingData.Right.EyeOpenness < 0.5f) : _rightEyeClosed;
var leftEyeBlinkValue = leftEyeClosed ? 100 : 0;
var rightEyeBlinkValue = rightEyeClosed ? 100 : 0;
// If eye openness has changed reset animation curve.
if (leftEyeClosed != _leftEyeClosed)
{
_animationProgressL = 0;
}
if (rightEyeClosed != _rightEyeClosed)
{
_animationProgressR = 0;
}
_blinkL = Mathf.Lerp(_blinkL, leftEyeBlinkValue, _blendShapeAnimationCurve.Evaluate(_animationProgressL));
_blinkR = Mathf.Lerp(_blinkR, rightEyeBlinkValue, _blendShapeAnimationCurve.Evaluate(_animationProgressR));
_bodyBlendShape.SetBlendShapeWeight(BlendShapeLeftEyeLid, _blinkL);
_bodyBlendShape.SetBlendShapeWeight(BlendShapeRightEyeLid, _blinkR);
_leftEyeClosed = leftEyeClosed;
_rightEyeClosed = rightEyeClosed;
_animationProgressL += Time.deltaTime / _blendShapeAnimationTimeSeconds;
_animationProgressR += Time.deltaTime / _blendShapeAnimationTimeSeconds;
}
