摘要
裁剪是计算机图形处理的重要技法。平面图形的裁剪窗口过去常被定义为矩形,本文论述了椭圆窗口的裁剪算法,并介绍了相应的绘图程序设计。该算法具有程序结构简单、占用内存少、自动处理功能强、适于在多种微机绘图系统上应用等优点。实例表明,基于该算法所设计的绘图程序是十分有效的。
The clipping is an important skill of computer graphical processing. The clipping window of two dimensional graphics used to be defined as a rectangle.In this paper,the clipping algorithm of an elliptical window is discussed,and the drawing programming based on this algorithm introduced.This algorithm is simple in program structure,requiring less memory;good in auto-processing; and suitable for running on various microcomputer drawing systems.Examples show that the drawing program based on this algorithm is quite effective.
出处
《长沙铁道学院学报》
CSCD
1990年第2期83-89,共7页
Journal of Changsha Railway University
关键词
计算机
图形处理
窗口
裁剪
computer graphical processing
window
clipping
graphical transformation
