private double speedLine(GazeLine gl)
{
double estimatedWords = gl.Length / averageWidthWordSpace;
double elapsedtime = gl.gazes.Last().timestamp - gl.gazes.First().timestamp;
//60000 ms to minute conversion
double speed = 60000 * estimatedWords / elapsedtime;
return(speed);
}
private int wordsLine(GazeLine gl)
{
double estimatedWords = gl.Length / averageWidthWordSpace;
return((int)estimatedWords + 1);
}
//creating a csv. name : lines_Benedick_3.csv, content: X;y;timestamp;duration;lineID
//reading the csv and alanyse each different lineID. For each fixation line, computing the y median position,
//taking the n neareast text line of the corresponding xml (the xml name correspond to the last letter of the csv file)
//Save 1 file per fixation line
//The file contain: n+1 lines (the first is the fixation line, and next ones are the nearest text lines with the potition of the words) : lineID; x1; x2; x3 …
static void nearestXMLLines(string fixationLinefilename, string xmlFolder)
{
#region serialize the XMLs
string[] xmlFiles = Directory.GetFiles(xmlFolder, "*.xml");
int xmlNumber = int.Parse(fixationLinefilename[fixationLinefilename.Length - 5].ToString());
//select the good xml file
string xmlPath = "";
foreach (var item in xmlFiles)
{
if (int.Parse(item[item.Length - 5].ToString()) == xmlNumber)
{
xmlPath = item;
break;
}
}
if (xmlPath == "")
{
Console.WriteLine("Error, the XML file corresponding to the csv cannot be found.");
Console.ReadLine();
return;
}
PcGts xml;
XmlSerializer xs = new XmlSerializer(typeof(PcGts));
using (StreamReader rd = new StreamReader(xmlPath))
{
xml = xs.Deserialize(rd) as PcGts;
}
#endregion
#region Analyse the fixations and the lines, create corresponding objects
List <string> fixations = File.ReadAllLines(fixationLinefilename).ToList();
fixations.RemoveAt(0); //remove the header
List <GazeLine> lines = new List <GazeLine>();
int idLine = -1;
GazeLine curentLine = new GazeLine();
for (int i = 0; i < fixations.Count; i++)
{
Gaze g = new Gaze();
string[] split = fixations[i].Split(';');
g.gazeX = float.Parse(split[0]);
g.gazeY = float.Parse(split[1]);
g.timestamp = float.Parse(split[2]);
g.duration = float.Parse(split[3]);
g.idLine = int.Parse(split[4]);
if (i == 0)
{
idLine = g.idLine;
curentLine.idLine = g.idLine;
}
else if (idLine != g.idLine)
{
//save the line
lines.Add(curentLine);
//start a new one
curentLine = new GazeLine();
idLine = g.idLine;
curentLine.idLine = g.idLine;
}
curentLine.gazes.Add(g);
}
//add the last group
lines.Add(curentLine);
#endregion
//Foreach line take the 5 nearest text line (in y)
foreach (var line in lines)
{
//get median y of line
double y = line.MedianY;
Dictionary <int, TextLine> nnLines = nearestLines(y, nbNeareastLines, xml);
//save the fixation x pos and the nearest text lines
string nameFile = fixationLinefilename.Replace(".csv", "_" + line.idLine + ".txt");
List <string> linesToWrite = new List <string>();
linesToWrite.Add("idLine; x1; x2;...");
string lineFixation = line.idLine.ToString();
foreach (var item in line.gazes)
{
lineFixation += ";" + item.gazeX + ";" + item.gazeY;
}
linesToWrite.Add(lineFixation);
foreach (var item in nnLines)
{
string lineTxtToWrite = item.Key.ToString();
foreach (var word in item.Value.Words)
{
lineTxtToWrite += ";" + word.Center.X + ";" + word.Center.Y;
}
linesToWrite.Add(lineTxtToWrite);
}
File.WriteAllLines(nameFile, linesToWrite);
}
}
