private void ChangeCubeImg(Cube cube, Fraction fraction, Color color)
        {
            cube.FillScreen(color);

            //            _imageSourceNum = fraction.GetNumerator() + ".png";
            //            _imageSourceDen = fraction.GetDenominator() + ".png";
            switch (fraction.GetNumerator())
            {
                case 1:
                    _imageSourceNum = "1.png";
                    break;
                case 2:
                    _imageSourceNum = "2.png";
                    break;
                case 3:
                    _imageSourceNum = "3.png";
                    break;
                case 4:
                    _imageSourceNum = "4.png";
                    break;
                case 5:
                    _imageSourceNum = "5.png";
                    break;
                case 6:
                    _imageSourceNum = "6.png";
                    break;
                case 7:
                    _imageSourceNum = "7.png";
                    break;
                case 8:
                    _imageSourceNum = "8.png";
                    break;
                case 9:
                    _imageSourceNum = "9.png";
                    break;
                case 10:
                    _imageSourceNum = "10.png";
                    break;
            }

            switch (fraction.GetDenominator())
            {
                case 1:
                    _imageSourceDen = "1.png";
                    break;
                case 2:
                    _imageSourceDen = "2.png";
                    break;
                case 3:
                    _imageSourceDen = "3.png";
                    break;
                case 4:
                    _imageSourceDen = "4.png";
                    break;
                case 5:
                    _imageSourceDen = "5.png";
                    break;
                case 6:
                    _imageSourceDen = "6.png";
                    break;
                case 7:
                    _imageSourceDen = "7.png";
                    break;
                case 8:
                    _imageSourceDen = "8.png";
                    break;
                case 9:
                    _imageSourceDen = "9.png";
                    break;
                case 10:
                    _imageSourceDen = "10.png";
                    break;
            }

            cube.Image(_imageSourceNum, _cubeX, _cubeYNum, _sourceX, _sourceY, _width, _height, _scale,
                       _rotation);
            cube.Image(_imageSourceDen, _cubeX, _cubeYDen, _sourceX, _sourceY, _width, _height, _scale,
                       _rotation);
            cube.FillRect(Color.Black, _cubeX, _cubeYDen - 10, 65, 10);
            cube.Paint();
        }