Introduction - If you have any usage issues, please Google them yourself
B-spline curve presents a method, the continuity of k-1 times on the n-polynomial curve fitting set of control points, B-spline curve, arbitrary order continuous. Therefore, in computer graphics preferred B-spline curve to define a very smooth curve. If you want to generate by any number of points or higher to meet the C2 continuity of the curve, B-spline curve is a better choice.