【摘要】 通过对有理Ｂｅｔａ样条曲面性质及其权因子几何意义的讨论，描述了此造型系统的结构和功能以及基于窗口设计、面向对象的事件驱动环境。同时给出了有理Ｂｅｔａ样条曲面的算法及实现步骤。最后通过实例对系统的实现加以说明。更多还原

【Abstract】 he paper discusses properties of rational Beta-spline surface and geometric significance of weighing factors, describes structure and function of the modeling system, as well as window-based, object-oriented, event-driven environment. Meanwhile, the algorithms and implementation for rational Beta-splines surface are given and shown by a case.更多还原