public Eye(Eye other)
{
if (null != other)
{
RawCoordinates = new Point2D(other.RawCoordinates);
SmoothedCoordinates = new Point2D(other.SmoothedCoordinates);
PupilCenterCoordinates = new Point2D(other.PupilCenterCoordinates);
PupilSize = other.PupilSize;
}
}
public GazeData()
{
DateTime now = DateTime.Now;
TimeStamp = (long)((double)now.Ticks / TimeSpan.TicksPerMillisecond);
TimeStampString = now.ToString(TIMESTAMP_STRING_FORMAT);
IsFixated = false;
RawCoordinates = Point2D.Zero;
SmoothedCoordinates = Point2D.Zero;
LeftEye = new Eye();
RightEye = new Eye();
}
public GazeData(GazeData other)
{
if (null != other)
{
State = other.State;
TimeStamp = other.TimeStamp;
TimeStampString = other.TimeStampString;
RawCoordinates = new Point2D(other.RawCoordinates);
SmoothedCoordinates = new Point2D(other.SmoothedCoordinates);
LeftEye = new Eye(other.LeftEye);
RightEye = new Eye(other.RightEye);
IsFixated = other.IsFixated;
}
}
public GazeData(GazeData other)
{
if (null != other)
{
State = other.State;
TimeStamp = other.TimeStamp;
TimeStampString = other.TimeStampString;
RawCoordinates = new Point2D(other.RawCoordinates);
SmoothedCoordinates = new Point2D(other.SmoothedCoordinates);
LeftEye = new Eye(other.LeftEye);
RightEye = new Eye(other.RightEye);
IsFixated = other.IsFixated;
}
}
private void Set(GazeData other)
{
State = other.State;
TimeStamp = other.TimeStamp;
TimeStampString = other.TimeStampString;
RawCoordinates = new Point2D(other.RawCoordinates);
SmoothedCoordinates = new Point2D(other.SmoothedCoordinates);
LeftEye = new Eye(other.LeftEye);
RightEye = new Eye(other.RightEye);
IsFixated = other.IsFixated;
}
/// <summary>
/// Calculates distance between pupil centers based on previously
/// recorded min and max values
/// </summary>
/// <param name="leftEye"></param>
/// <param name="rightEye"></param>
/// <returns>a normalized value [0f..1f]</returns>
public static double GetEyesDistanceNormalized(Eye leftEye, Eye rightEye)
{
double dist = Math.Abs(GetDistancePoint2D(leftEye.PupilCenterCoordinates, rightEye.PupilCenterCoordinates));
if (dist < _MinimumEyesDistance)
_MinimumEyesDistance = dist;
if (dist > _MaximumEyesDistance)
_MaximumEyesDistance = dist;
//return normalized
return dist / (_MaximumEyesDistance - _MinimumEyesDistance);
}
/// <summary>
/// Find average pupil center of two eyes.
/// </summary>
/// <param name="leftEye"></param>
/// <param name="rightEye"></param>
/// <param name="screenWidth"></param>
/// <param name="screenHeight"></param>
/// <returns>the average center point in pixels</returns>
public static Point2D GetEyesCenterPixels(Eye leftEye, Eye rightEye, int screenWidth, int screenHeight)
{
Point2D center = GetEyesCenterNormalized(leftEye, rightEye);
return GetRelativeToScreenSpace(center, screenWidth, screenHeight);
}
/// <summary>
/// Find average pupil center of two eyes.
/// </summary>
/// <param name="leftEye"></param>
/// <param name="rightEye"></param>
/// <returns>the average center point in normalized values</returns>
public static Point2D GetEyesCenterNormalized(Eye leftEye, Eye rightEye)
{
Point2D eyeCenter = Point2D.Zero;
if (null != leftEye && null != rightEye)
{
eyeCenter = new Point2D(
(leftEye.PupilCenterCoordinates.X + rightEye.PupilCenterCoordinates.X) / 2,
(leftEye.PupilCenterCoordinates.Y + rightEye.PupilCenterCoordinates.Y) / 2
);
}
else if (null != leftEye)
{
eyeCenter = leftEye.PupilCenterCoordinates;
}
else if (null != rightEye)
{
eyeCenter = rightEye.PupilCenterCoordinates;
}
return eyeCenter;
}