NURBS表示圆弧曲线的实用方法

SOME PRACTICAL APPROACHES OF REPRESENTING CIRCULAR ARCS WITH NURBS

摘要: 根据推导得到二次和三次NURBS表示圆弧曲线的实用方法,给出计算控制顶点及其权值的表达式,同时对该方法的适用范围进行了详细探讨,澄清了以往应用三次NURBS表示圆弧曲线的一点错误认识.

Abstract: The practical way of representing circular arcs with quadratic and cubic NURBS is presented．Circle is discussed in detail，and some erroneous concepts in representing circular arcs with cubic NURBS are explored．