如何获得基于图像的字体

Question 1

看起来你对每个字母都使用了相同的图像。这可以通过 Ti钾Zfadings库与和一起tikzfadingfrompicture。scope fading对于图像文件 cherries.jpg，我只是从“樱桃树”图像搜索中选择了一些内容。

\documentclass{article}

\usepackage{tikz}
\usetikzlibrary{fadings}

\renewcommand*\sfdefault{ugq}
\usepackage[T1]{fontenc}

\newcommand{\letterimage}[1]{
    \foreach \S[count=\n] in {#1}{%
        \begin{tikzfadingfrompicture}[name=cherries\n]
            \node [text=transparent!0, font=\sffamily, scale=6]{\S};
        \end{tikzfadingfrompicture}%
        \begin{tikzpicture}
            \node[scope fading=cherries\n]{\includegraphics[width=2cm]{cherries.jpg}};
        \end{tikzpicture}%
    }
}

\begin{document}
\letterimage{C,H,A,R,M}
\end{document}

Answer

看起来你对每个字母都使用了相同的图像。这可以通过 Ti钾Zfadings库与和一起tikzfadingfrompicture。scope fading对于图像文件 cherries.jpg，我只是从“樱桃树”图像搜索中选择了一些内容。

\documentclass{article}

\usepackage{tikz}
\usetikzlibrary{fadings}

\renewcommand*\sfdefault{ugq}
\usepackage[T1]{fontenc}

\newcommand{\letterimage}[1]{
    \foreach \S[count=\n] in {#1}{%
        \begin{tikzfadingfrompicture}[name=cherries\n]
            \node [text=transparent!0, font=\sffamily, scale=6]{\S};
        \end{tikzfadingfrompicture}%
        \begin{tikzpicture}
            \node[scope fading=cherries\n]{\includegraphics[width=2cm]{cherries.jpg}};
        \end{tikzpicture}%
    }
}

\begin{document}
\letterimage{C,H,A,R,M}
\end{document}

Question 2

无需加载即可执行此操作任何包。

以下适用于 Plain pdfTeX、Plain LuaTeX、pdfLaTeX 和 LuaLaTeX：

\catcode`\@=11

\ifdefined\directlua
    \def\pdfliteral{\pdfextension literal}
    \def\pdfrestore{\pdfextension restore\relax}
    \def\pdfsave{\pdfextension save\relax}
    \let\pdflastxform=\lastsavedboxresourceindex
    \let\pdflastximage=\lastsavedimageresourceindex
    \let\pdfpageheight=\pageheight
    \let\pdfpagewidth=\pagewidth
    \let\pdfrefxform=\useboxresource
    \let\pdfrefximage=\useimageresource
    \let\pdfxform=\saveboxresource
    \let\pdfximage=\saveimageresource
\fi

\newbox\bg@backgroundbox
\newbox\bg@outbox
\newbox\bg@textbox
\newdimen\bg@textwidth
\newdimen\bg@textheight

\protected\def\background#1#2{%
    \setbox\bg@textbox=\hbox{#1}%
    \bg@textwidth=\wd\bg@textbox%
    \bg@textheight=\ht\bg@textbox%
    \wd\bg@textbox=\z@%
    \ht\bg@textbox=\z@%
    %
    \setbox\bg@backgroundbox=\hbox{#2}%
    \wd\bg@backgroundbox=\pdfpagewidth%
    \ht\bg@backgroundbox=\pdfpageheight%
    \pdfxform\bg@backgroundbox%
    \setbox\bg@backgroundbox=\hbox{\pdfrefxform\pdflastxform}%
    \wd\bg@backgroundbox=\z@%
    \ht\bg@backgroundbox=\z@%
    %
    \setbox\bg@outbox=\hbox{%
        \pdfsave%
        \pdfliteral direct {7 Tr}%
        \box\bg@textbox%
        \pdfsave%
        \pdfliteral direct {0 Tr}%
        \box\bg@backgroundbox%
        \pdfrestore%
        \pdfrestore%
    }%
    \wd\bg@outbox=\bg@textwidth%
    \ht\bg@outbox=\bg@textheight%
    \box\bg@outbox%
}

\protected\def\backgroundimage#1#2{%
    \setbox\bg@textbox=\hbox{#1}%
    \pdfximage width \wd\bg@textbox {#2}%
    \background{#1}{\pdfrefximage\pdflastximage}%
}

\catcode`\@=12

\ifdefined\documentclass
    \documentclass{article}

    \begin{document}
    \Huge\bfseries
        \backgroundimage{CHARM}{NPBT_SC_background.jpg}
    \end{document}
\else
    \nopagenumbers
    \font\tgab=ec-qagb at 72bp\tgab

    \backgroundimage{CHARM}{NPBT_SC_background.jpg}

    \background{CHARM}{%
        \fiverm
        \vbox to 1in{%
            \leaders%
            \vbox{%
                \hbox to \hsize{%
                    \leaders%
                    \hbox{charm}%
                    \hfill%
                }%
            }%
            \vfill%
        }%
    }

    \background{CHARM}{\pdfliteral{
        1 0 0 rg 0 00 360 20 re f
        0 1 0 rg 0 20 360 20 re f
        0 0 1 rg 0 40 360 20 re f
    }}

    \bye
\fi

首先，我们将背景（本例中为图像）的绘制命令保存到 XObject 中。然后，我们将文本渲染模式设置为“clip”（7），这会将文本轮廓添加到当前剪切路径。最后，我们绘制被文本剪切的 XObject。

编译结果如下luatex：

Answer