/// <summary>
 /// Draws the figure in drawing area. 
 /// </summary>
 /// <param name="sender">The sender.</param>
 /// <param name="mouseArgs">The mouse arguments.</param>
 private void DrawFigure(object sender, MouseArgs mouseArgs)
 {
     Point endPositionForDrawing = mouseArgs.MousePosition;
     _graphics.DrawLine(_pen, _startPointForDrawing, endPositionForDrawing);
     _startPointForDrawing = endPositionForDrawing;
     _neuralNetworkGUI.RefreshDrawingArea();
 }
 /// <summary>
 /// Sets the start position for drawing letter.
 /// </summary>
 /// <param name="sender">The sender.</param>
 /// <param name="mouseArgs">The mouse arguments.</param>
 private void SetStartPosition(object sender, MouseArgs mouseArgs)
 {
     _startPointForDrawing = mouseArgs.MousePosition;
 }