不输入边界参数的通用剖面线子程序设计

本文根据计算机对显示器的象素识别功能,提出一种新的区域识别方法——几何模型象素识别法。该方法将几何模型分为向上做区和向下做区,并将区域边界分为8种基本边界类型,进而细分为14种边界状态,给出了相应的几何模型及判定条件。用这种方法编写的剖面线子程序,不需要输入边界参数、建立区域边界的数学模型,只要求输入区域内任意一点的坐标、剖面线方向及间隔参数即可绘制整个封闭区域的剖面线。

General Subroutine Design of Section Lines without Boundary Parameter Input

This paper advances a new method of area identification geometric model pixel identifying method according to the pixel distinguishing function of computer upon the monitor. The geometric models are divided into to-do-up area and to-do-down area,then the boundary area is divided into eight basic boundary types and further subdivided into fourteen boundary states giving corresponding geometric models and decision conditions. Using this section lines subroutine designed by this method, input of boundary parameter and setting up of mathematical models for boundary area is avoided. It is sufficient to input only the coordinates of one point within the area along with the direction and interval parameter of the section lines to completely draw the section lines within whole closed area.