quartic curve

The precision of derived definite integral formula by high-order curve fitting like thrice and quartic proximate curve is higher than Simpson formula and the C language original program to realize the above algorithm is presented.

导出比Simpson公式精度更高的三次、四次曲线近似的高次曲线拟合定积分公式，并给出实现该算法的C语言源程序。

It has many important properties of common quartic B-spline curve.

它具有普通四次B&样条曲线的重要性质，但不是由五个，而是由四个顺序控制点就能生成一曲线段。

We discuss the continuity equation should be satisfied by C2 continuous quartic spline curve. We also propose a new method to construct C2 continuous quartic spline surfaces.

讨论了C2连续的四次样条曲线需满足的连续性方程，提出了构造C2连续的四次样条插值曲面的新方法。