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如何避免额外的页面被旋转？

tag-icon • tag-icon pdftex rotating sidewaysfigure
如何避免额外的页面被旋转？

我正在尝试让所有sidewaysfigure页面自动旋转。但出于某种原因，我得到了一个额外的旋转页面（见下面的代码和屏幕截图）。我该如何避免这种情况？（这是一系列横向图形问题的一部分，例如如何让图形正确地呈现横向？）

\documentclass[oneside]{scrbook}

% Rotation trick from https://tex.stackexchange.com/a/472608/36836
\usepackage{rotfloat}
\usepackage{pdflscape,lipsum}
\usepackage{eso-pic,zref-user}
\newcounter{cntsideways}

\makeatletter

\AddToShipoutPictureBG{%
  \ifnum\zref@extractdefault{rotate\number\value{page}}{page}{0}=0  
    \PLS@RemoveRotate
  \else 
    \PLS@AddRotate{90}%
  \fi%
}

\newcommand\rotatesidewayslabel{\stepcounter{cntsideways}%
  \zlabel{tmp\thecntsideways}\zlabel{rotate\zref@extractdefault{tmp\thecntsideways}{page}{0}}}

\makeatother

% patch all sidewaysfigures to rotate
\usepackage{xpatch}
\xapptocmd{\sidewaysfigure}{\rotatesidewayslabel}{}{}

\begin{document}
\title{Title}

\maketitle
\tableofcontents{}

\mainmatter

\chapter{One}

\begin{sidewaysfigure}
\caption{}

\end{sidewaysfigure}

\end{document}

在此处输入图片描述

答案1

您正在使用 \mainmatter，这意味着您有两个页面编号为 2。将代码限制在 mainmatter 部分：

\documentclass[oneside]{scrbook}

% Rotation trick from https://tex.stackexchange.com/a/472608/36836
\usepackage{rotfloat}
\usepackage{pdflscape,lipsum}
\usepackage{eso-pic,zref-user}
\newcounter{cntsideways}

\makeatletter

\AddToShipoutPictureBG{%
\if@mainmatter
  \ifnum\zref@extractdefault{rotate\number\value{page}}{page}{0}=0
    \PLS@RemoveRotate
  \else
    \PLS@AddRotate{90}%
  \fi%
\fi  
}

\newcommand\rotatesidewayslabel{\stepcounter{cntsideways}%
  \zlabel{tmp\thecntsideways}\zlabel{rotate\zref@extractdefault{tmp\thecntsideways}{page}{0}}}

\makeatother

% patch all sidewaysfigures to rotate
\usepackage{xpatch}
\xapptocmd{\sidewaysfigure}{\rotatesidewayslabel}{}{}

\begin{document}
\frontmatter 
\title{Title}

\maketitle
\tableofcontents{}

\mainmatter


\chapter{One}

\begin{sidewaysfigure}
\caption{}

\end{sidewaysfigure}

\end{document}

另一种方法是根据绝对页码来设置标签：

\documentclass[oneside]{scrbook}

% Rotation trick from https://tex.stackexchange.com/a/472608/36836
\usepackage{rotfloat}
\usepackage{pdflscape,lipsum}
\usepackage{eso-pic,zref-user,zref-abspage}
\newcounter{cntsideways}

\makeatletter

\AddToShipoutPictureBG{%
  \ifnum\zref@extractdefault{rotate\the\numexpr\value{abspage}+1}{abspage}{0}=0
    \PLS@RemoveRotate
  \else
    \PLS@AddRotate{90}%
  \fi%
}

\newcommand\rotatesidewayslabel{\stepcounter{cntsideways}%
  \zlabel{tmp\thecntsideways}\zlabel{rotate\zref@extractdefault{tmp\thecntsideways}{abspage}{0}}}

\makeatother

% patch all sidewaysfigures to rotate
\usepackage{xpatch}
\xapptocmd{\sidewaysfigure}{\rotatesidewayslabel}{}{}

\begin{document}
\frontmatter 
\title{Title}

\maketitle
\tableofcontents{}

\mainmatter


\chapter{One}

\begin{sidewaysfigure}
\caption{}

\end{sidewaysfigure}

\end{document}

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