屏幕图形的无畸变打印

PRINTING SCREEN GRAPH WITHOUT DISTORTION

本文采用“预测法”,实现了IBM、PC机CGA上中分辨率和高分辨率屏幕图形的完美打印,适用于24针打印机。所给程序具有打印出的图形不变形、多级放大、占用空间少,以及运行速度快等特点。

This paper presents a so-called 'Precheck Method' which can be used to print the graph displayed in high solution and middle solution in IBM PC CGA adapter with best printing effort. The program pres ent ed in this paper is suited to matrix printer with 24 pins. It has the following advantages: no distortion in the printed graph, multilevel amplification, less storage need ed, and running time,