//Adds the gaze data to the list.
private void EnqueueGazeData(HMDGazeData gazeData)
{
if (gazeData != null)
{
gazeDataBuffer.Add(gazeData);
}
}
//Load the gaze data from recording with index fileIndex. Set append to true if reading from several data files.
private void LoadData(int fileIndex, bool append)
{
SetFileName();
//Set the file path.
string path;
if (fileIndex == 0)
{
path = Path.Combine(HMDDataSettings.DATA_FILE_DIRECTORY, fileName + HMDDataSettings.DATA_FILE_ENDING);
}
else
{
path = Path.Combine(HMDDataSettings.DATA_FILE_DIRECTORY, fileName + "(" + fileIndex + ")" + HMDDataSettings.DATA_FILE_ENDING);
}
//Check that the file exists.
if (!File.Exists(path))
{
Debug.Log("GazeDataLoader could not find a file matching the path: " + path + ". Please ensure the GazeRecorder has been running.");
return;
}
string[] jsonStrings = File.ReadAllLines(path);
//Check that data was loaded.
if (jsonStrings.Length == 0)
{
Debug.Log("The data file found at " + path + " was empty.");
return;
}
//If append is false, clear the data list to repopulate it.
if (!append)
{
dataList.Clear();
invalidDataCount = 0;
}
//Load the data
HMDGazeData tempData = new HMDGazeData();
for (int i = 0; i < jsonStrings.Length; i++)
{
tempData = (HMDGazeData)JsonUtility.FromJson(jsonStrings[i], typeof(HMDGazeData));
if (tempData.valid || tempData.pupilsValid || loadInvalid)
{
dataList.Add(tempData);
}
else
{
invalidDataCount++;
}
}
Debug.Log("HMDDataLoader loaded " + dataList.Count + " data objects, and discarded " + invalidDataCount + " invalid data objects.");
}
//Load data and initialize the replayer.
private bool Initialize()
{
if (initialized)
{
return(true);
}
replaying = false;
if (gazeReplayPoint == null)
{
Debug.Log("The Gaze Replay Point has not been assigned. Couldn't initialize.");
return(false);
}
gazeReplayPointMeshRenderer = gazeReplayPoint.GetComponent <MeshRenderer>();
if (gazeReplayPointMeshRenderer == null)
{
Debug.Log("The gaze replay point has no Mesh Renderer. Did not initialize.");
return(false);
}
pointImage = point.GetComponent <Image>();
pointPosition = Vector2.zero;
canvas = GetComponentInChildren <Canvas>();
if (canvas == null)
{
Debug.Log("Could not find a canvas component in children. Init failed.");
return(false);
}
if (pointImage == null)
{
Debug.Log("pointImage was not found, did not initalize.");
return(false);
}
HMDDataLoader.instance.LoadData(fileIndex);
dataIndex = 0;
dataCount = HMDDataLoader.instance.GetData().Count;
if (dataCount > 0)
{
currentData = HMDDataLoader.instance.GetData(0);
if (currentData != null)
{
startTime = currentData.timestamp;
playTime = startTime;
totalTime = 0;
return(true);
}
}
return(false);
}
//Turn a data object from the eye tracker into a custom gaze tracker object, ready to be serialized.
private HMDGazeData EncodeGazeData(IVRGazeData _IVRGazeData)
{
if (_IVRGazeData == null)
{
return(null);
}
HMDGazeData gazeData = new HMDGazeData();
gazeData.valid = _IVRGazeData.CombinedGazeRayWorldValid;
gazeData.timestamp = Time.time;
Vector3 viewportPoint = Vector3.zero;
if (gazeData.valid)
{
viewportPoint = GazeToViewportPoint(mainCamera, _IVRGazeData.CombinedGazeRayWorld.direction);
}
string objectName = "None";
float distance = lastDistance;
if (raycast)
{
RaycastHit hit;
if (Physics.Raycast(_IVRGazeData.CombinedGazeRayWorld, out hit))
{
distance = hit.distance;
lastDistance = distance;
GameObject target = hit.collider.gameObject;
if (target != null)
{
objectName = target.name;
}
}
}
else
{
objectName = "Not Tracked";
}
gazeData.viewPortPoint = viewportPoint;
gazeData.distance = distance;
gazeData.origin = _IVRGazeData.CombinedGazeRayWorld.origin;
gazeData.direction = _IVRGazeData.CombinedGazeRayWorld.direction;
gazeData.objectName = objectName;
gazeData.pupilsValid = IsPupilDataValid(_IVRGazeData);
gazeData.pupilSize = AveragePupilDiameter(_IVRGazeData);
return(gazeData);
}
private void UpdateGazeData()
{
//Check if there is data in the list.
if (dataCount == 0)
{
initialized = false;
return;
}
//Update current data.
if (dataIndex < dataCount)
{
HMDGazeData nextData = HMDDataLoader.instance.GetData(dataIndex);
if (nextData != null)
{
currentData = nextData;
}
}
}
