弯曲 90 度的单粗箭头，而不是两个双粗箭头

Question

我想在我的 tikz 文档中绘制这样的箭头 -

我已经使用以下代码完成了它 -

\documentclass{minimal}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}[node distance=2.5cm,auto,>=latex]
\usepgflibrary{shapes.arrows}
\node [single arrow, draw=none,fill=black,opacity=0.5, minimum width=0.8cm, minimum height=1.5cm,anchor=west,rotate=90] at (-3.25,-1) {}; 
\node [single arrow, draw=none,fill=black,opacity=0.5, minimum width=0.8cm, minimum height=1.6cm,anchor=west] at (-3.12,-0.845) {}; 

\node [single arrow, draw=none,fill=black,opacity=0.5, minimum width=0.8cm, minimum height=1.5cm,anchor=west,rotate=90] at (4.25,-1) {};
\node [single arrow, draw=none,fill=black,opacity=0.5, minimum width=0.8cm, minimum height=1.60cm,anchor=west,rotate=180] at (4.12,-0.845) {};


\end{tikzpicture}
\end{document}

但是，我发现两个箭头之间有间隙，尤其是当我使用 时scalebox。我不希望箭头之间有间隙，而是想让它感觉像一个箭头。有人能告诉我怎么做吗？

谢谢 ！

Answer 1

你可以使用arrow box这样的形状：

\documentclass[tikz, border=0.125cm]{standalone}
\usetikzlibrary{shapes.arrows}

\begin{document}

\begin{tikzpicture}

\node [arrow box, 
  arrow box shaft width=0.125cm, 
  inner sep=0.125cm/2, % should be half shaft width
  fill=gray, 
  arrow box arrows={north:.5cm, west:0.5cm}]
  {};

\node [arrow box, 
  arrow box shaft width=0.125cm, 
  inner sep=0.125cm/2, % should be half shaft width
  fill=gray, 
  arrow box arrows={north:.5cm, east:0.5cm}]
  at (1,0) {};

\end{tikzpicture}

\end{document}

Answer 2

您可以手动放置两个路径（不是很优雅，但可以工作，需要 tikz 的 cvs 版本）：

\documentclass[article]{standalone}
\usepackage{tikz}
\usetikzlibrary{arrows.meta}
\begin{document}

\def\lwidth{3mm}
\begin{tikzpicture}[garrow/.style={black!50!white, line width=\lwidth},
    garrowtip/.style={-{Triangle[length=5mm,width=8mm]}},]
    \draw[garrow] (.5*\lwidth,0) edge[garrowtip] (.5*\lwidth,2);
    \draw[garrow] (0,.5*\lwidth) edge[garrowtip] (2,.5*\lwidth);
\end{tikzpicture}
\end{document}

结果：