the program is to fit a bezier curve .bezier curve is a powerful algorithm for engineer.

三次贝塞尔分段插值(按照Excel曲线算法),计算平滑曲线上任意一点的点坐标的自定义函数BezierFit。 Excel的平滑曲线没有提供这个曲线图的公式，所以通过编程查找曲线上的点坐标。-Cubic Bezier Interpolation (in accordance with the Excel curve algorithm) to calculate any point on a smooth curve point coor