This question came from a derivation of How to translate and rotate the heading of landscaped pages?
I want to rotate the header (with have page number and chapter name) on some landscape pages that are not sequential.
I am using the code proposed by 沙漠之子 user that works very well not generating conflicts with the other packages that I use. The problem is that this solution appear to be single shot, after \restoregeometry command I can make work the \newgeometry{,hmargin=3cm,vmargin=5cm,landscape} again.
My intention is use as:
\usepackage[a4paper,top=3cm,bottom=2cm,left=3cm,right=2cm]{geometry} % Margins.
\makeatletter
\def\ifGm@preamble#1{\@firstofone}
\appto\restoregeometry{%
\pdfpagewidth=\paperwidth
\pdfpageheight=\paperheight}
\apptocmd\newgeometry{%
\pdfpagewidth=\paperwidth
\pdfpageheight=\paperheight}{}{}
\makeatother
\newcommand{\newgeometrylandscape}{\newgeometry{top=3cm,bottom=2cm,left=3cm,right=2cm,landscape}}
\begin{document}
\chapter{One}
\lipsum[1]
\section{One One}
\lipsum[2]
\newgeometry{hmargin=3cm,vmargin=5cm,landscape}
Landscape part 1
\lipsum[3-5]
\restoregeometry
\lipsum[6]
\newgeometry{hmargin=3cm,vmargin=5cm,landscape}
Landscape part 2
\lipsum[3-5]
\restoregeometry
\end{document}