【摘要】 根据非均匀α-B插值样条曲线的一般形式,结合非均匀α-B插值样条曲线的形状调配方法,产生了一种新方法来解决二维手绘草图的表示问题。在二维草图中,研究了基于非均匀α-B插值样条曲线的草图表示、草图生成、草图修改以及草图缩放的算法。这种表示方法模型统一,生成插值点的算法简单,适合分布式网络环境下的实时协作。表示后的草图缩放具有向量图缩放的优点,设计人员可以在缩放后的草图上进行形状调配。更多还原

【Abstract】 Combining the basic form of non-uniform α-B interpolation spline with its shape control mechanics,a new approach was produced to solving the problem of representing 2D sketches.Based on non-uniform α-B interpolation spline representation,algorithms of 2D sketch representation,generation,modification and scale were studied and brought up.This representation method is a unified solution,and the interpolation points can easily be computed,so very suitable for designers to coo￣perate under distributing network environments.The sketch scale is of the same advantage as vector map,and designers can(perform) shape control on the scaled sketch.更多还原