// Update is called once per frame
void Update()
{
//position of Letters relatet to its parents
LetterPosX = this.gameObject.transform.localPosition.x;
LetterPosY = this.gameObject.transform.localPosition.y;
LetterPosZ = this.gameObject.transform.localPosition.z;
Transform cameraTransform = Camera.main.transform;
ulong timeStamp = smiInstance.smi_GetTimeStamp();
Vector3 leftGazeDirection = smiInstance.smi_GetLeftGazeDirection();
Vector3 rightGazeDirection = smiInstance.smi_GetRightGazeDirection();
Vector2 binocularPor = smiInstance.smi_GetBinocularPor();
Vector3 cameraRaycast = smiInstance.smi_GetCameraRaycast();
Vector2 leftPor = smiInstance.smi_GetLeftPor();
Vector2 rightPor = smiInstance.smi_GetRightPor();
Vector3 leftBasePoint = smiInstance.smi_GetLeftGazeBase();
Vector3 rightBasePoint = smiInstance.smi_GetRightGazeBase();
//Define real position of Letters related to the FOV of the Eyetracker
LetterxPosFOV = (1080 + this.transform.parent.transform.localPosition.x + LetterPosX);
LetteryPosFOV = -(-600 + this.transform.parent.transform.localPosition.y + LetterPosY);
if (SMI.SMIEyeTrackingUnity.smi_IsValid(cameraRaycast))
{
//Distance between Letter and Camera
LetterDistanceCamera = Vector3.Distance(this.transform.position, cameraTransform.position);
//Define the direction from Kamera to Letter
targetDir = this.transform.position - cameraTransform.position;
targetRightBaseDir = this.transform.position - cameraTransform.TransformPoint(rightBasePoint);
targetLeftBaseDir = this.transform.position - cameraTransform.TransformPoint(leftBasePoint);
//Calculate the Angle between the direction of Camera and Letter and the direction of the Raycast of the eyes
angleCameraLetter = Vector3.Angle(cameraTransform.TransformDirection(cameraRaycast), targetDir);
angleleftGazeDirection = Vector3.Angle(cameraTransform.TransformDirection(leftGazeDirection), targetLeftBaseDir);
angleRightGazeDirection = Vector3.Angle(cameraTransform.TransformDirection(rightGazeDirection), targetRightBaseDir);
Vector2 angularTarget = new Vector2(Vector3.SignedAngle(Vector3.forward, new Vector3(this.transform.localPosition.x, 0, LetterDistanceCamera), Vector3.up),
Vector3.SignedAngle(Vector3.forward, new Vector3(0, this.transform.localPosition.y, LetterDistanceCamera), Vector3.up));
Vector2 angularResult = new Vector2(Vector3.SignedAngle(Vector3.forward, new Vector3(cameraRaycast.x, 0, cameraRaycast.z), Vector3.up),
Vector3.SignedAngle(Vector3.forward, new Vector3(0, cameraRaycast.y, cameraRaycast.z), Vector3.up));
float errX = angularResult.x - angularTarget.x;
float errY = angularResult.y - angularTarget.y;
float realAngle = Mathf.Sqrt(errX * errX + errY * errY);
/*
*
* Einige Berechnungen wurden doppelt ausgeführt zur überprüfung des Wahrheitsgehaltes der Funktionen.
*
*
*/
time += Time.deltaTime;
EyeXPos = binocularPor.x;
EyeYPos = binocularPor.y;
//Debug.Log ("LetterPos [x;y] " + LetterxPosFOV + "," + LetteryPosFOV + "EyeXPos " + EyeXPos + "," + EyeYPos);
//Richtungsvektor des Eye berechnen
EyeDirVecX = EyeXPos - EyeOldPosX;
EyeDirVecY = EyeYPos - EyeOldPosY;
//Richtungsvektor des Buchstaben
LetterDirVecX = LetterxPosFOV - LetterOldPosX;
LetterDirVecY = LetteryPosFOV - LetterOldPosY;
//Richtungsvektoren in Vecotrschreibweise
//Eye
RichtungsVecEye = new Vector2(EyeDirVecX, EyeDirVecY);
//Letter
RichtungsVecLetter = new Vector2(LetterDirVecX, LetterDirVecY);
//Distanz zwischen alter und neuer Position (Länge des Richtugnsvektors)
EyeDistance = Vector2.Distance(new Vector2(EyeXPos, EyeYPos), new Vector2(EyeOldPosX, EyeOldPosY));
LetterDistance = Vector2.Distance(new Vector2(LetterxPosFOV, LetteryPosFOV), new Vector2(LetterOldPosX, LetterOldPosY));
//normierter Richtungsvektor Letter und Eye
NorRichtungsVecLetter = (1 / LetterDistance) * RichtungsVecLetter;
NorRichtungsVecEye = (1 / EyeDistance) * RichtungsVecEye;
//Geschwindigkeitsberechnung der Buchstaben über Distanz und Zeit
EyeSpeed = (EyeDistance * (time - oldtime));
LetterRealspeed = (LetterDistance * (time - oldtime));
//Geschwindigkeitsabgleich zwischen Auge und Buchstabe
SpeedDivision = (LetterRealspeed / EyeSpeed);
//Winkelberechnung des Winkels zwischen Richtungsvektor Buchstabe und Richtungsvektor Auge
DirAngelLetterToGazeVec = Vector2.Angle(RichtungsVecLetter, RichtungsVecEye);
NorDirAngelLetterToGazeVec = Vector2.Angle(NorRichtungsVecLetter, NorRichtungsVecEye);
//Abstand zwischen Buchstabe und Augen Anhand der POR und FOV Position
DistanceEyeAndLetterPOR = Vector2.Distance(new Vector2(EyeXPos, EyeYPos), new Vector2(LetterxPosFOV, LetteryPosFOV));
//Berechnung der Match-Werte
calculateMatchValue(SpeedDivision, angleCameraLetter, DirAngelLetterToGazeVec);
calculateMatchValueGewichtet(SpeedDivision, angleCameraLetter, DirAngelLetterToGazeVec);
calculateMatchValueGewichtet2(SpeedDivision, angleCameraLetter, DirAngelLetterToGazeVec);
//PORPosition
EyeOldPosX = EyeXPos;
EyeOldPosY = EyeYPos;
//Letterposition
LetterOldPosX = LetterxPosFOV;
LetterOldPosY = LetteryPosFOV;
timedifferenz = 0f;
oldtime = time;
}
}
