我正在尝试用 tikz 绘制流程图，但遇到了 2 个问题。
第一个是关于 (action5) 的定位。我希望该节点位于 (action4) 左侧和 (test1) 下方。在我的代码中，该节点与 (test1) 不对齐。
第二个问题是关于 (wait1) 中红色边缘的定位。我希望边缘接触 (test1) 和 (action4) 之间的边缘。
这是我的代码：
\documentclass{book}
\usepackage{graphicx}
\usepackage{tikz}
\usetikzlibrary{positioning,shadows,arrows,shapes,shapes.arrows,trees,calc}
\tikzset{
wait/.style={circle, draw=black, text centered, anchor=north, text=black, font=\scriptsize},
end/.style={draw=none, fill=none, text centered, anchor=north}
wait/.style={circle,draw=black,text centered,anchor=north,text=black,font=\scriptsize},
decision/.style={diamond,draw=black, inner sep=0.18cm,text centered,anchor=north,text=black},
action/.style={ regular polygon,regular polygon sides=4,inner sep=0.2cm,draw=black,text centered,anchor=north,text=black},
foreach/.style={regular polygon,regular polygon sides=3,draw=black,text centered,anchor=north,text=black},
endforeach/.style={ foreach,shape border rotate=180}
}
\begin{document}
\begin{figure}[h]
\begin{tikzpicture}[align=center]
\node (start) [end] {Begin $P_{I2-1}(partial, firstAppNode)$};
\node (action1) [action,below=0.5 of start,label=0:{Init graph matching algorithm \\ (partial, firstAppNode)}] {};
\node (action2) [action, below=1 of action1, label=0:{Compute next partial projection}] {};
\node (test1) [decision, below=0.5 of action2] {};
\node (foreach1) [foreach, below right = 0.5 and 4 of test1,label=0:{ForEach $appNeighbour$ of $firstAppNode$}] {};
\node (foreach2) [foreach, below right = 1 and 1 of foreach1,label=180:{ForEach $neighbour$}] {};
\node (action3) [action,below=1 of foreach2,label=180:{Send message \\ to neighbour \\ request(projection, ...)}] {};
\node (wait1) [wait, below=1 of action3] {$\mathcal{W}$};
\node (endforeach2) [endforeach, below=0.5 of wait1] {};
\node (endforeach1) [endforeach, below left=0.5 and 1 of endforeach2] {};
\node (action4) [action, below=0.5 of endforeach1, label=0:{Send message to A \\ response(partial)}] {};
\node (action5) [action, left=4 of action4, label=0:{Send message to A \\ response(projection)}] {}; %
\node (action6) [action, left=1 of action5, label=180:{Send message to A \\ response(none)}] {};
\node (end1) [end, below=0.5 of action4] {End ok};
\node (end2) [end, below=0.5 of action5] {End ok};
\node (end3) [end, below=0.5 of action6] {End ok};
\draw[->] (start)--(action1);
\draw[->] (action1)--(action2);
\draw[->] (action2)--(test1);
\draw[->,red] (test1)--(action5) node[pos=0.04,left] {complete};
\draw[->] (test1)-|(action6) node[pos=0.15,above] {fail};
\draw[->] (test1)-|(foreach1) node[pos=0.15,above] {projection};
\draw[->] (foreach1)|-($(foreach1)!0.5!(foreach2)$)-|(foreach2);
\draw[->] (foreach2)--(action3);
\draw[->] (action3)--(wait1);
\draw[->] (wait1)--(endforeach2) node[pos=0.3,right] {response(none)};
\coordinate[shift={(0,1)}] (wait1endforeach1) at (endforeach1.north);
\draw[->] (wait1)--(wait1endforeach1)--(endforeach1) node[pos=0.2,left] {response(partial)};
\coordinate[shift={(-5,0)}] (wait1action4) at (wait1.west);
\draw[->,red] (wait1)--(wait1action4) node[pos=0.3,above] {response(complete)};
\draw[->] (endforeach1)--(action4);
\draw[->] (action4)--(end1);
\draw[->] (action5)--(end2);
\draw[->] (action6)--(end3);
\coordinate[shift={(-3,0)}] (linkforeach1) at (foreach1.south);
\draw[dashed] (foreach1) -| (linkforeach1) |- (endforeach1) ;
\coordinate[shift={(3,0)}] (linkforeach2) at (foreach2.south);
\draw[dashed] (foreach2) -| (linkforeach2) |- (endforeach2) ;
\coordinate[shift={(5.5,-0.5)}] (foreach2action2) at (endforeach2.south);
\draw[->] (endforeach2) |- (foreach2action2) |- ($(action1)!0.5!(action2)$) ;
\node[above,shift=({0,-0.1cm})] at(start.north) {\textbf{Compute application projection}};
\end{tikzpicture}
\end{figure}
\end{document}
答案1
第一个问题：
\node (action5) [action, label=0:{Send message to A \\ response(projection)}] at (action4 -| test1){}; %
第二个问题：
\draw[->,red] (wait1)--($(test1)!(wait1)!(action5)$) node[pos=0.3,above] {response(complete)};
请不要添加无法编译的代码（缺少许多样式和库）。阅读代码不仅非常无聊，而且您得到的答案也未经测试。