摘要
本文通过对重心坐标形式Ｂｅｚｉｅｒ曲线各阶方向导数的分析，给出了这种形式Ｂｅｚｉｅｒ曲线的有效求值方法，所用内存量和乘法数目与ｄｅＣａｓｔｅｌｊａｕ算法相当。
By means of analyzing all directional derivatives of barycentric coordinate form of Be'zier curves,an efficient evaluation method for this form has been furnished,and all the storage quantity and multiplication number are equivalent to that of de Castelisu algorithm.
