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tkz-euclide 文档中箭头示例出现错误

tag-icon • tag-icon tikz-arrows tkz-euclide
tkz-euclide 文档中箭头示例出现错误

我尝试实现tkz-euclide手册第 192 页上的一个示例，该示例应该在圆圈上绘制几个箭头。但是我得到了一个错误。

\documentclass{standalone}
\usepackage{tkz-euclide}
\tikzset{tkz arrows/.style=
    {postaction={on each path={tkz arrow={Latex[scale=2,color=black]}}}}}
\begin{document}

\begin{tikzpicture}  
  \tkzDefPoints{0/0/A,3/0/B}
  \tkzDrawCircle[tkz arrows](A,B)
\end{tikzpicture}

\end{document}

错误是

Package pgfkeys Error: I do not know the key '/tikz/on each path', to which you passed 'tkz arrow={Latex[scale=2,color=black]}', and I am going to ignore it. Perhaps you misspelled it.

答案1

如果你有旧版本，你可以在文件中添加一些样式

\makeatletter
%<----------------  arrow --------------------------------------–>
% Syntax:
%
%  - tkz arrow=<arrow end tip>`
%  - tkz arrow=<arrow end tip> at <pos> (<pos> = .5 by default)
%  - tkz arrow={<arrow end tip>[<arrow options>] at <pos>}
%
%
% Example usages:
%
% \draw[tkz arrow=Stealth] (A) -- (B);
% \draw[tkz arrow={To[scale=3] at .3}] (A)-- (B);
% \draw[tkz arrow={Latex[scale=5,blue] at .8}] (A)-- (B);

\tikzset{
tkz arrow/.default=Latex,
  tkz arrow/.code=%
  {%
    \pgfutil@in@{ at }{#1}%
    \ifpgfutil@in@
      \mytikz@parsearrow#1\mytikz@stop
    \else
      \mytikz@parsearrow#1 at .5\mytikz@stop
    \fi
  }
}
\def\mytikz@parsearrow#1 at #2\mytikz@stop{%
  \pgfutil@in@{[}{#1}%
  \ifpgfutil@in@
    \mytikz@parsearrow@opt{#2}#1\mytikz@stop
  \else
    \mytikz@parsearrow@opt{#2}#1[]\mytikz@stop
  \fi
}

% #1 = pos, #2 = arrow end tip, #3 = arrow options
\def\mytikz@parsearrow@opt#1#2[#3]\mytikz@stop{%
  \pgfkeysalso{decoration={
      markings,
      mark=at position #1 with {\arrow[#3]{#2}}
    },
    postaction={decorate}
  }%
}
%<------------------------------------------------------------->
\tikzset{
   on each path/.style={
    decorate,
    decoration={
      show path construction,
      moveto code={},
      lineto code={
        \path [#1]
        (\tikzinputsegmentfirst) -- (\tikzinputsegmentlast);
      },
      curveto code={
        \path [#1] (\tikzinputsegmentfirst)
        .. controls
        (\tikzinputsegmentsupporta) and (\tikzinputsegmentsupportb)
        ..
        (\tikzinputsegmentlast);
      },
      closepath code={
        \path [#1]
        (\tikzinputsegmentfirst) -- (\tikzinputsegmentlast);
      }}}}
 %<------------------  arrows --------------------------------------–>          
\tikzset{tkz arrows/.style=%
{postaction={on each path={tkz arrow={Latex[scale=2,color=black]}}}}}  
\makeatother

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