棋盘格覆盖的背景图像

Question

我想知道如何才能实现带有棋盘格背景图像的封面设计。

\documentclass[12pt,svgnames]{book}
\usepackage{eso-pic}
\usepackage{geometry}
\usepackage[english]{babel}
% Title Page
\title{My Title Page}
\author{My Self}

\date{}

\AddToShipoutPicture*{\put(0,0){\includegraphics[width=\paperwidth,height=\paperheight]{example-a}}}

\begin{document}
\newgeometry{margin = 0pt}
    \maketitle

\restoregeometry
\chapter{Chapter Title}
%
chapter text.

\end{document} 

Answer 1

我创建了一个pic有两个元素的正方形args：边长（以厘米为单位）和颜色。

通过这种方式，你可以尽情选择你喜欢的东西：

\documentclass[12pt,svgnames]{book}
\usepackage{eso-pic}
\usepackage{geometry}
\usepackage[english]{babel}
\usepackage{graphicx}
\usepackage{tikz}

% Title Page
\title{My Title Page}
\author{My Self}

\date{}
\newlength{\mydim}

\tikzset{%
    pics/chessboard/.style args={#1,#2}{code={%
            \setlength{\mydim}{#1cm}
            \pgfmathsetmacro{\stepeven}{2*#1}
            \pgfmathsetmacro{\totx}{int(round(\paperwidth/\mydim))*#1}
            \pgfmathsetmacro{\toty}{int(round(\paperheight/\mydim))*#1}
            \pgfmathsetmacro{\stepodd}{(2*#1)+#1}       
            \foreach \x in {0,\stepeven,...,\totx} \foreach \y in {0,\stepeven,...,\toty}
            {
                \path[fill=#2] (\x,\y) rectangle ++ (#1,#1);
            }
            \foreach \x in {#1,\stepodd,...,\totx} \foreach \y in {#1,\stepodd,...,\toty}
            {
                \path[fill=#2] (\x,\y) rectangle ++ (#1,#1);
            }
    }}
}

\AddToShipoutPicture*{\put(0,0){\includegraphics[width=\paperwidth,height=\paperheight]{example-image-a}}
    \put(0,0){% 
        \begin{tikzpicture}
        \pic {chessboard={.7,red}};
        \end{tikzpicture}
}}

\begin{document}
    \newgeometry{margin = 0pt}
    \maketitle

    \restoregeometry
    \chapter{Chapter Title}
    %
    chapter text.

\end{document} 

这是 MWE ( ) 的输出\pic {chessboard={.7,red}};：

例如，如果你输入\pic {chessboard={.4,green}};，你会得到这样的结果：