贝齐尔曲线算法演示程序

实验原理：贝齐尔曲线的形状是通过一组多边折线（也称为贝齐尔控制多边形）的各顶点唯一的定义出来的。

程序思路：先用链表把鼠标点击过的点记录下来，做为控制多边形。然后调用n次Bernstein多项式的基函数运算出曲线的点,最后用直线分段画出来（本程序分成了50段来画）

-Bezier curve algorithm Experimental Demonstration Program Principle : Bezier curve's shape through a multilateral dogleg Group (also known as the Bezier control polygon) of the apex only in the definition years. Procedures ideas : first use the mouse to click the chain put off point on record, as a control polygon. Then called n-Bernstein polynomial function calculate the curve, Finally, subparagraph drawn straight (this program consists of 50 to paint)