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剖面线(填色)处理的新方法

The new processing method of section line (filling)
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摘要 在计算机绘制机械图样时必须有一个通用性的剖面线图形处理程序,本文提出的图形处理程序有两个主要特点;第一,画剖面线的轮廓图形的数据;直线或圆弧是无序排列的,这样大大地方便了轮廓线数据输入;第二,作剖面线图形输出时,交替改变剖面线的画线方向,这样绘图时极大地减少了抬笔移动的路线,从而节约了绘图时间。 本文介绍了轮廓线的数据结构,剖面线图形处理方法,提供用户的四个剖面线子程序说明以及调用该四个子程序绘制的图例。 When the mechanical drawing is drawn by computer, there must be a general graphical processing program of section line. The program which is elucidated by this paper has two main features. The first is that, the data of lines and arcs which are the outline to encircle section line are arranged at random. So the input data of outline are more conveniently. The second is that, the section line is drawn by bidirectional drawing. So the moving path with the pen raised is obviously reduced during drawing, thus the time of drawing is saved.In the paper, the data structure of outline, the processing method of graphics of section line, the explanation of four subroutines of section line, which is provided for users, and the drawings which were drawn by calling this four subroutines are introduced.
机构地区 浙江大学机械系
出处 《浙江大学学报(自然科学版)》 CSCD 1991年第4期451-457,共7页
关键词 剖面线 机械图 计算机绘图 轮廓线 section line, data structure of outline, arrange at random, bidirectional drawing, overlapping points.
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