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algorithm2e 中的彩色水平线

tag-icon • tag-icon color rules algorithm2e
algorithm2e 中的彩色水平线

我正在尝试为下面算法顶部和底部出现的 3 条水平线着色。我在网上找不到类似的问题。您能提供建议吗？

\documentclass[11pt,a4paper]{article}
\usepackage[no-math]{fontspec}
\usepackage[dvipsnames,svgnames,table,fixpdftex]{xcolor}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage[ruled,linesnumbered]{algorithm2e}


\begin{document}        

\begin{algorithm}
\SetArgSty{textnormal}
\SetKwInOut{Input}{Input}
\SetKwInOut{Output}{Output}
\DontPrintSemicolon
\Input{A point $P$, an $n$-bit integer $k=\displaystyle\sum_{i=0}^{n-1} k_{(i)}2^i$}
\Output{$Q=[k]P$}
\Begin{
 $Q \longleftarrow \mathcal{O}$\;
 \For{$i=n-1$ to $0$}
 {
    $Q \longleftarrow [2]Q$\;
    \If{$k_{(i)}=1$}{
        $Q \longleftarrow Q+P$
    }
 }
 \Return{$Q$}
}

\caption{Binary method for EC point multiplication} \label{alg1}
\end{algorithm}

\end{document}

结果如下所示。 带箭头的线条需要加点颜色

答案1

以下设置允许您通过提供的宏调整这些颜色以满足您的需要：

\setalgotoprulecolor{<colour>}
\setalgomidrulecolor{<colour>}
\setalgobotrulecolor{<colour>}

在此处输入图片描述

\documentclass{article}

\usepackage[dvipsnames,svgnames,table]{xcolor}
\usepackage{amsmath,amssymb}
\usepackage[ruled,linesnumbered]{algorithm2e}

% algorithm2e settings
\SetArgSty{textnormal}
\SetKwInOut{Input}{Input}
\SetKwInOut{Output}{Output}
\DontPrintSemicolon
\newcommand{\assign}{\longleftarrow}

\makeatletter
\newcommand{\setalgotoprulecolor}[1]{\colorlet{toprulecolor}{#1}}
\let\old@algocf@pre@ruled\@algocf@pre@ruled % Adjust top rule colour
\renewcommand{\@algocf@pre@ruled}{\textcolor{toprulecolor}{\old@algocf@pre@ruled}}

\newcommand{\setalgobotrulecolor}[1]{\colorlet{bottomrulecolor}{#1}}
\let\old@algocf@post@ruled\@algocf@post@ruled % Adjust middle rule colour
\renewcommand{\@algocf@post@ruled}{\textcolor{bottomrulecolor}{\old@algocf@post@ruled}}

\newcommand{\setalgomidrulecolor}[1]{\colorlet{midrulecolor}{#1}}
\renewcommand{\algocf@caption@ruled}{%
  \box\algocf@capbox{\color{midrulecolor}\kern\interspacetitleruled\hrule
    width\algocf@ruledwidth height\algotitleheightrule depth0pt\kern\interspacealgoruled}}
\makeatother

\setalgotoprulecolor{blue!30}% Default
\setalgobotrulecolor{red!30}% Default
\setalgomidrulecolor{green!30}% Default

\begin{document}        

\begin{algorithm}
  \Input{A point $P$, an $n$-bit integer $k = \sum_{i=0}^{n-1} k_{(i)}2^i$}
  \Output{$Q = [k]P$}
  \Begin{
   $Q \assign \mathcal{O}$\;
   \For{$i = n-1$ to $0$}
   {
      $Q \assign [2]Q$\;
      \If{$k_{(i)} = 1$}{
          $Q \assign Q + P$
      }
   }
   \Return{$Q$}
  }
  \caption{Binary method for EC point multiplication}
\end{algorithm}

\end{document}

上面的代码特定ruled于algorithm2e。

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