private void GetPointsForSpline(Dictionary<double, double> points)
        {
            Dictionary<double, double> newPoints = new Dictionary<double, double>();
            for (int x = 3; x < 9; x++)
            {
                for (double t = 0; t <= 1; t = t + 0.01)
                {
                    Matrix<double> Tmatrix = DenseMatrix.OfArray(new double[,]
                    {
                        {Math.Pow(t, 3), Math.Pow(t, 2), t, 1}
                    });
                    Matrix<double> matrix = DenseMatrix.OfArray(new double[,]
                    {
                        {-0.5, 1.5, -1.5, 0.5},
                        {1, -2.5, 2, -0.5},
                        {-0.5, 0, 0.5, 0},
                        {0, 1, 0, 0}
                    });
                    Matrix<double> Xmatrix = DenseMatrix.OfArray(new double[,]
                    {
                        {points.Keys.ElementAt(x - 3)},
                        {points.Keys.ElementAt(x - 2)},
                        {points.Keys.ElementAt(x - 1)},
                        {points.Keys.ElementAt(x)}
                    });
                    Matrix<double> Ymatrix = DenseMatrix.OfArray(new double[,]
                    {
                        {points.Values.ElementAt(x - 3)},
                        {points.Values.ElementAt(x - 2)},
                        {points.Values.ElementAt(x - 1)},
                        {points.Values.ElementAt(x)}
                    });
                    Matrix<double> XResultMatrix = Tmatrix * matrix * Xmatrix;
                    Matrix<double> YResultMatrix = Tmatrix * matrix * Ymatrix;
                    if (!newPoints.ContainsKey(XResultMatrix[0, 0]))
                    {
                        newPoints.Add(XResultMatrix[0, 0], YResultMatrix[0, 0]);
                    }
                }
            }
            DrawPoligonalLine(newPoints, System.Windows.Media.Brushes.BlueViolet);
        }