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选择性地框选并标记图像的各个部分

tag-icon • tag-icon tikz-pgf beamer standalone
选择性地框选并标记图像的各个部分

我想让这些框和文本标签在一段时间后逐渐消失，因为这会导致图像中出现不必要的混乱。另外，我最终想将图像幻灯片作为投影仪演示的一部分。

 \documentclass{standalone}
 \usepackage{graphicx}
 \usepackage{tikz}
 \begin{document}
 \begin{tikzpicture}[
 every pin edge/.style={thick,blue!50},pin distance=15mm,
 cir/.style = {align=center,circle,fill=blue!50,minimum size=6pt,inner sep=0pt}]
 \node[anchor=south west,inner sep=0] (image) at (0,0) 
 {\includegraphics[width=1\textwidth]{example-image-a}};
 \begin{scope}
        [
          x={(image.south east)},
          y={(image.north west)}
        ]
 %     \draw[help lines,xstep=.1,ystep=.1] (0,0) grid (1,1);
 %     \foreach \x in {0,1,...,9} { \node [anchor=north,font=\tiny] at (\x/10,0) {0.\x}; }
 %     \foreach \y in {0,1,...,9} { \node [anchor=east,font=\tiny] at (0,\y/10) {0.\y}; }
  \begin{scope}[x={(image.south east)},y={(image.north west)}]
   \only<2->
   { 
   \node [cir,pin=20:{Standard}] at (0.55,0.75) {};
   \draw[red,ultra thick,rounded corners] (0.315,0.5) rectangle (0.59,0.87);
   }
   \only<3->
   {
   \node [cir,pin=240:{Standard2}] at (0.45,0.25) {};
   \draw[red,ultra thick,rounded corners] (0.3,0.02) rectangle (0.61,0.41);
   }
   \only<4->
   {
   \node [cir,pin=110:{ABCD}] at (0.16,0.45) {};
   \draw[blue,ultra thick,rounded corners] (0.10,0.29) rectangle (0.28,0.6);
   }
   \only<5->
   {
   \node [cir,pin=60:\parbox{4cm}{EFGHI}] at (0.82,0.45) {};
   \draw[blue,ultra thick,rounded corners] (0.7,0.29) rectangle (0.85,0.5);
   }
   \only<6->
   {
   \node [cir,pin=20:\parbox{4cm}{lorem}] at (0.65,0.15) {};
   \draw[green,ultra thick,rounded corners] (0.6,0.12) rectangle (0.7,0.28);
   }
 \end{scope}
 \end{scope}
 \end{tikzpicture}
 \end{document}`

答案1

您可以使用 来将方框逐帧放置\only<slide number>。如果您不知道大型演示文稿中的幻灯片编号，但想逐张显示它们，请使用\only<+>。就像

 \documentclass{beamer}
 \usepackage{tikz}
 \begin{document}
 \begin{frame}
 \begin{overprint}
 \begin{tikzpicture}[
 every pin edge/.style={thick,blue!50},pin distance=15mm,
 cir/.style = {align=center,circle,fill=blue!50,minimum size=6pt,inner sep=0pt}]
 \node[anchor=south west,inner sep=0] (image) at (0,0)
 {\includegraphics[width=1\textwidth]{example-image-a}};
 \begin{scope}
        [
          x={(image.south east)},
          y={(image.north west)}
        ]
 %     \draw[help lines,xstep=.1,ystep=.1] (0,0) grid (1,1);
 %     \foreach \x in {0,1,...,9} { \node [anchor=north,font=\tiny] at (\x/10,0) {0.\x}; }
 %     \foreach \y in {0,1,...,9} { \node [anchor=east,font=\tiny] at (0,\y/10) {0.\y}; }
  \begin{scope}[x={(image.south east)},y={(image.north west)}]
   \only<+>
   {
   \begin{scope}[overlay]
   \node [cir,pin=20:{Standard}] at (0.55,0.75) {};
   \draw[red,ultra thick,rounded corners] (0.315,0.5) rectangle (0.59,0.87);
   \end{scope}
   }
   \only<+>
   {
   \begin{scope}[overlay]
   \node [cir,pin=240:{Standard2}] at (0.45,0.25) {};
   \draw[red,ultra thick,rounded corners] (0.3,0.02) rectangle (0.61,0.41);
   \end{scope}
   }
   \only<+>
   {
   \begin{scope}[overlay]
   \node [cir,pin=110:{ABCD}] at (0.16,0.45) {};
   \draw[blue,ultra thick,rounded corners] (0.10,0.29) rectangle (0.28,0.6);
   \end{scope}
   }
   \only<+>
   {
   \begin{scope}[overlay]
   \node [cir,pin=60:\parbox{4cm}{EFGHI}] at (0.82,0.45) {};
   \draw[blue,ultra thick,rounded corners] (0.7,0.29) rectangle (0.85,0.5);
   \end{scope}
   }
   \only<+>
   {
   \begin{scope}[overlay]
   \node [cir,pin=20:\parbox{4cm}{lorem}] at (0.65,0.15) {};
   \draw[green,ultra thick,rounded corners] (0.6,0.12) rectangle (0.7,0.28);
   \end{scope}
   }
 \end{scope}
 \end{scope}
 \end{tikzpicture}
 \end{overprint}
 \end{frame}

 \end{document}

在此处输入图片描述

我习惯于scope覆盖标记，这样幻灯片就不会跳动。我遗漏了线条和节点的位置，需要进行更正。

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