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允许绘制计算机缓冲区（内存图）的图表包

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允许绘制计算机缓冲区（内存图）的图表包

我正在编写一份文档来解释内存缓冲区和计算机的内部结构，并且正在寻找一个可以让我创建类似以下图表的 LaTeX 包：

循环缓冲区：

在此处输入图片描述

线性缓冲器：

在此处输入图片描述

有什么建议么？

答案1

你可以用 TikZ（tikz包加库）或 PS-Tricks（pstricks和其他pst-包）绘制这样的图表。我个人推荐 TikZ。

以下是我绘制这些图表的方法：

\documentclass{article}

\usepackage{tikz}

\begin{document}
\sffamily
\textbf{Circular buffer:}

\begin{tikzpicture}[>=latex,font=\sffamily,semithick,scale=1.75]
    \fill [green!25] (0,0) -- (67.5:1) arc [end angle=-22.5, start angle=67.5, radius=1] -- cycle;
    \draw [thick] (0,0) circle (1);
    \foreach \angle in {90,67.5,...,-67.5}
        \draw (\angle:1) -- (\angle-180:1);
    \node [circle,thick,fill=white,draw=black,align=center,minimum size=3cm] at (0,0) {FIFO as a\\Circulate Buffer};
    \draw [<-] (56.25:1) -- (56.25:1.25) -- +(.333,0)
        node [right,inner xsep=.333cm] (Head) {Head (extract)};
    \draw [<-] (-33.75:1) -- (-33.75:1.25) -- +(.333,0)
        node [right,inner xsep=.333cm] (Tail) {Tail (insert)};
    \draw [->,shorten >=5pt,shorten <=5pt] (Tail.west) to [bend right] 
        node [midway,sloped,above,allow upside down] {\footnotesize 4\,bytes in FIFO}
    (Head.west);
\end{tikzpicture}

\bigskip
\bigskip

\textbf{Linear buffer:}
\par
\bigskip

\begin{tikzpicture}[>=latex,font=\sffamily,every node/.style={minimum width=1cm,minimum height=1.5em,outer sep=0pt,draw=black,fill=blue!40,semithick}]
        \node at (0,0) (A) {};
        \node [anchor=west] at (A.east) (B) {};
        \node [anchor=west] at (B.east) (C) {1};
        \node [anchor=west] at (C.east) (D) {2};
        \node [anchor=west] at (D.east) (E) {3};
        \node [anchor=west] at (E.east) (F) {};
        \node [anchor=west] at (F.east) (G) {};
        \draw [->,shorten >=2pt,shorten <=2pt,semithick] (G.south) -- +(0,-1em) -| (A);
\end{tikzpicture}
\end{document}

结果

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