An Approach to the Construction of Cubic Curves and Surface[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 1981,20(1):12-21.DOI:
三次曲线曲面的一种构造法
摘要
本文给出构造三次曲线面的二种类型的方法.对于已给型值的情况
提出了一种含有“逼近因子”的B 样条型三次曲线
它把样条插值法和拟合法统一起来.对于已给型值及型值点导数的情况
提出一种含有“导数因子”的贝齐尔(Bezier)型三次曲线及曲面
常用的一般三次插值曲线及曲面和齐尔三次曲线及曲面
就是这类曲线及曲面的特殊情形.
Abstract
In this paper
an approach to the construction of cubic curves and surfaces is giv-en.In case the values of the function are known
the cubic curves of B-splinetype that depend on“the approximated parameter”are presented.The method thuspresented to give the cubic curves combine the method of spline interpolation withthat of spline fitting.In case the values of the function and its derivative areknown.The cubic curves of Bezier type with“the derivative parameter”are pre-sented.The often used cubic curves of the Bezier aud those of the Hermite in-terpolation are then the special cases of the cubic curves presented.