window clipping meaning in English

窗口裁剪

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。