Bessel curve with n control points

  // Input n Landmarks , According to time t(0 <= t <=1)  Get the coordinate points on the curve  
    Vector3 CalculatePath(List<Vector3> points, float t) {
        Vector3 tempPos = Vector3.zero;
        for (int i = 0; i < points.Count; i++) {
            tempPos += GetYangNum(points.Count, i + 1) * points[i] * Mathf.Pow((1 - t), points.Count - (i + 1)) * Mathf.Pow(t, i);
        }
        return tempPos;
    }

    // Get the specified value of Yang Hui triangle 
    int GetYangNum(int m, int n) {
        if (m == n || n == 1) {
            return 1;
        } else {
            return GetYangNum(m - 1, n - 1) + GetYangNum(m - 1, n);
        }
    }