public ResultDTO CheckExam(int examID, List <AnswerPositionDTO> answerPositionsDTO)
{
Dictionary <int, int> bitmapsDictionary = new Dictionary <int, int>();
int questions = 0;
var bitmapList = _examsDictionary[examID];
foreach (var bitmap in bitmapList)
{
var pageNumber = BitmapAnalyser.GetExamPage(bitmap);
var pageAnswers = answerPositionsDTO.Where(x => x.PageNumber == pageNumber).OrderBy(x => x.Y).ToList();
var standarizedBitmap = BitmapAnalyser.ResizeToStandard(bitmap);
foreach (var answer in pageAnswers.OrderBy(x => x.Y))
{
var answerBitmap = BitmapAnalyser.GetAnswerBitmap(standarizedBitmap, answer);
var answerValue = BitmapAnalyser.CheckValue(answerBitmap);
if (bitmapsDictionary.ContainsKey(answer.AnswerDTO.QuestionID) == false)
{
questions++;
bitmapsDictionary.Add(answer.AnswerDTO.QuestionID, 1);
}
//check if value on paper is correct
if (!(answerValue == answer.AnswerDTO.IfCorrect))
{
bitmapsDictionary[answer.AnswerDTO.QuestionID] = 0;
}
}
}
return(new ResultDTO()
{
Points = bitmapsDictionary.Select(x => x.Value).Sum(), MaxPoints = questions, GeneratedExamID = examID
});
}
public DocumentValidator(List <Bitmap> bitmapList)
{
_bitmapList = bitmapList;
_examsDictionary = new Dictionary <int, List <Bitmap> >();
_examIDs = new List <int>();
foreach (var bitmap in _bitmapList)
{
using (var excractedDocument = BitmapAnalyser.ExtractDocumentFromBitmap(bitmap))
{
var binaryDocument = BitmapAnalyser.getBinarizedBitmap(excractedDocument);
var examID = BitmapAnalyser.GetExamID(binaryDocument);
if (!_examsDictionary.ContainsKey(examID))
{
_examsDictionary.Add(examID, new List <Bitmap>()
{
binaryDocument
});
}
else
{
_examsDictionary[examID].Add(binaryDocument);
}
_examIDs.Add(examID);
}
}
}
