曲线曲面计算机辅助造型软件设计

Computer-Aided Modelling Design With Curves and Curve Surfaces

叙述了用三次参数样条曲线、贝塞尔曲线、B 样条曲线和贝塞尔及 B 样条曲面进行计算机辅助造型设计的原理和方法,提出了一个全部汉字交互,具有多种输入和输出方式的自由曲线和自由曲面造型的设计系统。本系统可随机进行修改、删除和插入顶点信息,并可进行各种图形的变换和开窗裁剪。本系统可用于计算机绘图辅助教学和计算机辅助造型设计。

The principle and method of computer-aided modelling design using the cubic spline curve,Bezier curve,B-spline curve and Bezier-B-spline surface are expounded.A new system with Chinese character used for modelling free-form curves and curve surfaces in in- teractive design is presented.The random modification,deletion,the insertion of vertices in- formation,the graphic transformation and windowing/clipping can readily be done in this system.The system gives a useful means for computer-aided modelling and computer-aided teaching.