In this research, the program of automatic generation of parts processing sketch, which is based on parametric drawing, is completed by means of defining features of parts.
本文所叙述的工序图的自动绘制模块是通过将零件分离成各种特征，在参数化绘图的基础上实现的。
2
For the pixel-level generation of parametric curves, we find that the point densities chosen by the existing algorithms are not even along the curves.
对于其中的参数曲线的逐点生成，目前的算法在绘制曲线的过程中会出现所绘制点疏密不均的现象。
3
Based on the triangulation of parametric surface, a new method of tool path generation for complicated multi surfaces is presented.