clipping n. 剪断,剪裁;剪取物;〔美国〕(报纸等的)剪辑(=〔英国〕cutting);剪报;(报纸的)杂讯栏;〔pl.〕零头衣料。 the hair clippings 剪下的头发。 clipping bureau 〔美国〕报纸、杂志资料供应社、剪报服务社。 adj. 1.剪的。 2.〔口语〕快速的。 3.〔俚语〕头等的,极好的;恰好的。 Come in clipping time. 来得恰好。
The new line against polygon window clipping algorithm which makes full use of two judgement conditions to confirm noneffective intersections between the lines and the polygon edges can only calculate the effective intersections and increases the efficiency of the clipping . third , a new 3 - d clipping algorithm of line against spherical surface window is introduced for the first time 一般多边形窗口线裁剪的改进算法充分利用确定被裁线段与多边形边无交的两个判断条件,对完全不可见线段以及与被裁线段无有效交点的多边形边进行了排除,只有当线段与多边形边有有效交点时才求交,避免了不必要的求交,提高了算法效率。