NEC-ACOS计算机中PGL4绘图系统的交互化

The Interactivization of the Graphics System PGL4 in the NEC-ACOS Computer

本研制报告论述了一年来对日本NEC-ACOS计算机原有的批处理式绘图系统PGL4逐步实现准交互化以至纯交互化的功能、用法及设计思路,并附五张实画图为例。此外,还提供了原PGL4所没有的三维图形等功能。

This paper reports our work about improving the graphics abilities of the NEC-ACOS computer (male in Japan),from the original batch mode to interactive mode, their features, usages, design ideas and ftve figures generated for examples.By interactivization we mean to develope a series of interactive features and a set of subpro grams ia the intelligent terminal library to simulate the 50 graphics subprograms in the host library, so that before we generate drawing on the host plotter, we may echo, chcck and modify the simulated image on the off-line terminal by this new system until it is errorfree.Some advanced features such as 3-dimensional graphics are developed as well, which are not pro vided by the originel system.