How to Scale the Display Size of a Cropped Image

Question

The basis of the following code Cf. How can I clip an image via a bezier-path?

Consider

\documentclass{article}
    \usepackage{tikz}
    \usepackage{graphicx}
\newif\ifdeveloppath
\tikzset{/tikz/develop clipping path/.is if=developpath,
  /tikz/develop clipping path=true}

\newcommand{\clippicture}[2]{
\begin{tikzpicture}
\ifdeveloppath
  \node[anchor=south west,inner sep=0] (image) at (0,0) {\includegraphics{ramanujan}};
\else
  \node[anchor=south west,inner sep=0] (image) at (0,0) {\phantom{\includegraphics{ramanujan}}};
\fi
\pgfresetboundingbox
\begin{scope}[x={(image.south east)},y={(image.north west)}]
    \ifdeveloppath
    \draw[help lines,xstep=.1,ystep=.1] (0,0) grid (1,1);
    \foreach \x in {0,1,...,9} { \node [anchor=north] at (\x/10,0) {0.\x}; }
    \foreach \y in {0,1,...,9} { \node [anchor=east] at (0,\y/10) {0.\y}; }
    \draw[red, ultra thick] #2 -- cycle;
  \else
    \path[clip] #2 -- cycle;
    \node[anchor=south west,inner sep=0pt] {\includegraphics{ramanujan}};
  \fi
\end{scope}
\end{tikzpicture}
}



\begin{document}
    \hskip 25pt \textbf{Ramanujan} 
    \vskip 7pt
    \clippicture{[width=0.8\textwidth]{some-image}}{(0.1,1.00) -- (0.80,1.00) -- (0.8,0.5) .. controls (0.8,-0.2) and (0.35,0.2) .. (0.1,0.3)}
\tikzset{develop clipping path=false}

\vskip 25pt


\clippicture{[width=0.8\textwidth]{some-image}}{(0.1,1.00) -- (0.80,1.00) -- (0.8,0.5) .. controls (0.8,-0.2) and (0.35,0.2) .. (0.1,0.3)}
\vskip 20pt
\noindent \textbf{QUESTION:  How to adjust the display size of this cropped image?}
\end{document}

QUESTION: I would like to be able to increase/decrease the visual appearance of the cropped image, but techniques that one would apply to an \includegraphics situation do not seem to work here. Does anyone know how to accomplish this here?

Thank you.

Simon Dispa · Accepted Answer · 2021-08-03T20:22:07.243

You can use adjustbox to scale the clip.

\documentclass{article}
\usepackage{tikz}
\usepackage{graphicx}
\usepackage[left=2.00cm, right=2.00cm, top=1.00cm, bottom=1.00cm]{geometry}
\newif\ifdeveloppath
\tikzset{/tikz/develop clipping path/.is if=developpath,
    /tikz/develop clipping path=true}
\newcommand{\clippicture}[2]{
    \begin{tikzpicture}
        \ifdeveloppath
        \node[anchor=south west,inner sep=0] (image) at (0,0) {\includegraphics{example-grid-100x100pt}};
        \else
        \node[anchor=south west,inner sep=0] (image) at (0,0) {\phantom{\includegraphics{example-grid-100x100pt}}};
        \fi
        \pgfresetboundingbox
        \begin{scope}[x={(image.south east)},y={(image.north west)}]
            \ifdeveloppath
            \draw[help lines,xstep=.1,ystep=.1] (0,0) grid (1,1);
            \foreach \x in {0,1,...,9} { \node [anchor=north] at (\x/10,0) {0.\x}; }
            \foreach \y in {0,1,...,9} { \node [anchor=east] at (0,\y/10) {0.\y}; }
            \draw[red, ultra thick] #2 -- cycle;
            \else
            \path[clip] #2 -- cycle;
            \node[anchor=south west,inner sep=0pt] {\includegraphics{example-grid-100x100pt}};
            \fi
        \end{scope}
    \end{tikzpicture}
}
\usepackage{adjustbox} % added <<<<<<<<<<
\begin{document}
\hskip 25pt \textbf{example-grid-100x100pt} 
\vskip 7pt
\clippicture{[width=0.8\textwidth]{some-image}}{(0.1,1.00) -- (0.80,1.00) -- (0.8,0.5) .. controls (0.8,-0.2) and (0.35,0.2) .. (0.1,0.3)}
\tikzset{develop clipping path=false}
\vskip 25pt
Original size\medskip
\clippicture{[width=0.8\textwidth]{some-image}}{(0.1,1.00) -- (0.80,1.00) -- (0.8,0.5) .. controls (0.8,-0.2) and (0.35,0.2) .. (0.1,0.3)}
\newpage
Reduced size \medskip
\begin{adjustbox}{width={0.1\linewidth},keepaspectratio} % change width to scale <<<<<<
    \tikzset{develop clipping path=false}

    \clippicture{[width=0.8\textwidth]{some-image}}{(0.1,1.00) -- (0.80,1.00) -- (0.8,0.5) .. controls (0.8,-0.2) and (0.35,0.2) .. (0.1,0.3)}
\end{adjustbox}
Enlarged size   \medskip
\begin{adjustbox}{width={0.5\linewidth},keepaspectratio} % change width to scale <<<<<<
    \tikzset{develop clipping path=false}

    \clippicture{[width=0.8\textwidth]{some-image}}{(0.1,1.00) -- (0.80,1.00) -- (0.8,0.5) .. controls (0.8,-0.2) and (0.35,0.2) .. (0.1,0.3)}
\end{adjustbox}
\end{document}

How to Scale the Display Size of a Cropped Image

1 Answers1