Based on the characteristics of AutoCAD drawing and functions of operating the drawing in AutoCAD it is proposed that the closed window boundary should be transformed into the region before the calculation of window clipping and the generating method is given .

根据AutoCAD图形的特点及AutoCAD中已有的功能提出，将封闭的窗口 定义成面域（region）参与 裁剪运算，并给出了 面域的自动生成方法；

Study on Arbitrary Complicated Window Clipping Technology Base on AutoCAD

基于AutoCAD的任意复杂 窗口 裁剪技术

A new concept of the window 's vertex encoding is proposed for the first time based on the essential characteristic of the line clipping against polygonal window .

从多边形窗口线 裁剪的本质特征出发，首次提出 窗口顶点编码的新概念。

This paper gives two simple and practical new clipping algorithms of circular window based on the study of graphic window and clipping method .

本文在对图形 开窗- 裁剪算法深入研究的基础上，提出了两种新颖而又实用的圆形窗口 裁剪算法。

We analyzed the line clipping against a circular window with a hole in detail and presented a new line clipping algorithm .

详尽地分析了带孔的圆形 窗口上的直线 裁剪问题，并给出了算法。

By calculating the clipping region of window the exposure region of window is divided into two parts : the clipping region and the covered region then expose them respectively by calling the graphic interfaces of the screen .

通过计算窗口的裁剪区域，将 窗口的暴露区域分为 裁剪区域和被遮盖的区域两部分，然后调用屏幕的绘图函数分别对它们进行暴露。

Firstly to the rectangle window algorithms for clipping lines circles and ellipses as well as parametric curves are introduced .

首先对于矩形 窗口，介绍了直线 裁剪算法，圆和椭圆 裁剪算法以及参数曲线的 裁剪算法。

For the closed loop entities the window clipping is completed by combining the boolean operator used in region .

对闭环实体，组合使用面域的布尔操作实现 窗口 裁剪。