Based on profound study of various position relations between a line segment and a circle, a simple and rapid clipping algorithm for circular window is presented in this paper.
通过对直线段相对圆的各种位置关系作深入的研究，提出了一种简单而迅速的圆形窗口裁剪算法。
2
Objective To study the clinical features, management, risk factors and prognosis of ruptured cerebral aneurysms which were treated with surgical clipping or interventional embolization.
目的研究脑动脉瘤破裂在开颅夹闭和介入栓塞治疗上的临床特点，处理方法，危险因素及预后。
3
Graphics clipping and covering is one of the key points in computer graphics field. After more study and practice, a new algorithm is give, which is for clipping and covering in circular window.