B3 样条曲线曲面的应用

Study on Application of B3-splines

在对各种造型设计进行分析比较的基础上，深入研究了国际上最新提出的Ｂ３样条曲线（面）法。并以此为理论基础，按照拱坝布置阶段的要求，在微机上生成了具有光照效果的拱坝真实感图形、拱坝平面图、线框图、垂直断面图以及任一高程的拱圈平面图等等。从理论和实际两方面为进一步完善拱坝的计算机辅助设计系统进行了一些有益的探索。

Based on analysis and comparison of several modeling design methods, the newest B3splines method proposed internationally is studied profoundly. With this theoretical basis, according to the requests for arch dam geometry modeling design in arrangement stage, an illuminative realizable graph, plane, frame graph, and vertical sections of arch dam, and ring course plane at any elevation are produced in PC486. It gives some profitable researches for perfecting the CAD in theory and practice.