定义与 TikZ 的“到路径”一起使用的可选距离

Question

我希望下面的代码能够为移位距离提供可选参数。最好的方法是什么？

\documentclass[12pt]{article}

\usepackage{tikz}
\usetikzlibrary{calc} 

\tikzset{
    aczigzag/.style = {
        to path = {
            ([xshift = 0mm] \tikztostart)
             |- ([xshift = 3mm, yshift = 5mm] \tikztotarget.north)
             -- ([xshift = 3mm] \tikztotarget.north)
        }
    },
}
\begin{document}

\begin{tikzpicture}
  \node
  (input) {INPUT};

  \node[right] at ($(input) + (2.5,0)$)
  (right) {right};

  \node[below of = input, node distance = 4cm]
  (output) {OUPUT};

  \path[draw] (right) to[aczigzag] (output);
\end{tikzpicture}

\end{document}

Answer 1

这就是 pgf 键的用途。您可以将距离存储在此类键中，并在路径中修改它们。

\documentclass[12pt]{article}

\usepackage{tikz}
\usetikzlibrary{calc} 

\tikzset{
    aczigzag/.style = {
        to path = {
            ([xshift = 0mm] \tikztostart)
             |- ([xshift = \pgfkeysvalueof{/tikz/aczigzag/x}, yshift = \pgfkeysvalueof{/tikz/aczigzag/y}] \tikztotarget.north)
             -- ([xshift = \pgfkeysvalueof{/tikz/aczigzag/x}] \tikztotarget.north)
        }
    },aczigzag/.cd,x/.initial=3mm,y/.initial=5mm}

\begin{document}

\begin{tikzpicture}
  \node
  (input) {INPUT};

  \node[right] at ($(input) + (2.5,0)$)
  (right) {right};

  \node[below of = input, node distance = 4cm]
  (output) {OUPUT};

  \path[draw] (right) to[aczigzag] (output);
\end{tikzpicture}

\begin{tikzpicture}
  \node
  (input) {INPUT};

  \node[right] at ($(input) + (2.5,0)$)
  (right) {right};

  \node[below of = input, node distance = 4cm]
  (output) {OUPUT};

  \path[draw,aczigzag/x=5mm,aczigzag/y=12mm] (right) to[aczigzag] (output);
\end{tikzpicture}


\end{document}

在这里你也可以使用

\path[draw] (right) to[aczigzag,aczigzag/x=5mm,aczigzag/y=12mm] (output);

让样式的参数进行这些更改可能更方便。然后

 \path[draw] (right) to[aczigzag={x=5mm,y=12mm}] (output);

将把水平距离更改为 5 毫米，将垂直距离更改为 12 毫米。

\documentclass[12pt]{article}

\usepackage{tikz}
\usetikzlibrary{calc} 

\tikzset{
    aczigzag/.style = {/utils/exec=\tikzset{aczigzag/.cd,#1},
        to path = {
            ([xshift = 0mm] \tikztostart)
             |- ([xshift = \pgfkeysvalueof{/tikz/aczigzag/x}, yshift = \pgfkeysvalueof{/tikz/aczigzag/y}] \tikztotarget.north)
             -- ([xshift = \pgfkeysvalueof{/tikz/aczigzag/x}] \tikztotarget.north)
        }
    },aczigzag/.cd,x/.initial=3mm,y/.initial=5mm}

\begin{document}

\begin{tikzpicture}
  \node
  (input) {INPUT};

  \node[right] at ($(input) + (2.5,0)$)
  (right) {right};

  \node[below of = input, node distance = 4cm]
  (output) {OUPUT};

  \path[draw] (right) to[aczigzag] (output);
\end{tikzpicture}

\begin{tikzpicture}
  \node
  (input) {INPUT};

  \node[right] at ($(input) + (2.5,0)$)
  (right) {right};

  \node[below of = input, node distance = 4cm]
  (output) {OUPUT};

  \path[draw] (right) to[aczigzag={x=5mm,y=12mm}] (output);
\end{tikzpicture}
\end{document}