private Cell GetCellFoLine(PointF firstPointF, PointF secondPointF)
{
var centerPointF = firstPointF.CenterBetweenThisAndAnotherPointF(secondPointF);
var cells = matrixCells.Where(cell => centerPointF.IsBetweenTwoPointFs(new PointF(cell.leftBoarder, cell.lowerBoarder), new PointF(cell.rightBoarder, cell.upperBoarder)));
var tmpcount = cells.Count();
var res = ((firstPointF.X == secondPointF.X || firstPointF.Y == secondPointF.Y) && cells.Count() > 1) ?
cells.Where(cell => cell.lowerBoarder == centerPointF.Y ||
cell.leftBoarder == centerPointF.X).Single() :
cells.Single();
return(res);
}