差值算法，并且介绍了拉格朗日插值多项式，抛物线插值多项式

基于VC的三种端点条件的插值B样条曲线绘制，包括夹持端点，自由端点，抛物线端点，线性方程组的解法采用了追赶法。,VC based on the conditions of the three endpoint interpolation B-spline curve drawing, including the gripping end, the Liberal endpoint, the endpoint parabola, the solution of linear equations u

通过对点在坐标系中的确定，可以对点进行线性插值，抛物线插值，拉格朗日插值。-The determination of the point in the coordinate system can be linear interpolation, to point parabolic interpolation, Lagrange interpolation.