三次样条插值，需要三次样条插值的可以下载这个包，也许对你有帮助-cubic spline curve

用两种方法实现贝赛尔曲线的画法。Java库函数和贝赛尔曲线原理公式画法，用这两种方法画一个小动物。-Two methods to achieve Bezier curve drawing method. Java library functions and principles of Bezier curve formula for painting, using these two methods to draw a small animals.

Bspline曲线生成程序Catmull-Rom Spline, Lagrange, Natural Cubic Spline, and NURBS方法获得B样条曲线-Implementation of various mathematical curves that define themselves over a set of control points. The API is written in Java. The curves supported are: Bezier, B-Spl

BSpline 及各种曲线Implementation of various mathematical curves that define themselves over a set of control points. The API is written in Java. The curves supported are: Bezier, B-Spline, Cardinal Spline, Catmull-Rom Spline, Lagrange, Natural Cubic Splin