ps 如何画标尺

在 PostScript（PS）中绘制标尺可以通过多种方法实现，以下是一个简单的示例，使用 PostScript 语言绘制一个水平标尺：

```ps

% 标尺宽度

def /scalewidth 10 def

% 标尺高度

def /scaleheight 100 def

% 标尺的刻度间隔

def /tickinterval 10 def

% 标尺的刻度长度

def /ticklength 5 def

% 标尺的总长度

def /totalLength (scalewidth tickinterval mul) def

% 开始图形状态

gsave

% 标尺起始位置

50 50 moveto

% 绘制标尺

0 0 lineto (scalewidth 0) lineto

% 绘制刻度

0 (tickinterval add) moveto

0 (ticklength add) lineto

0 (tickinterval mul 2 add) moveto

0 (ticklength add) lineto

% 重复绘制刻度

/i 1 def

{

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