☰

例子

tag-icon • tag-icon tikz-pgf tikz-arrows tikz-styles
例子

我正在努力强制箭头连接到节点的特定侧。我有兴趣实现以下任一解决方案：

  • 明确强制箭头连接到节点的左侧
  • 利用自动定位/对齐来强制箭头不与其他箭头重叠

例子

当前结果

目前结果

期望的结果

箭头穿过底部节点并进入大流程节点，以便它不会与其余箭头交叉。 所需箭头方向

平均能量损失

% vim:ft=tex:
%
\documentclass{standalone}

% TiKz drawing
\usepackage{tikz}
\usetikzlibrary{
    matrix,
    arrows.meta,
    positioning,
    scopes,
    backgrounds,
    fit}


\begin{document}
% Define set to use across flow charts
\tikzset{%
    >={Latex[width=2mm,length=2mm]},
    % Specifications for style of nodes:
    base/.style = {rectangle, rounded corners, draw=black,
        minimum width=2cm, minimum height=1cm,
    text centered, font=\sffamily},
    activityStarts/.style = {base, fill=blue!30},
    startstop/.style = {base, fill=red!30},
    activityRuns/.style = {base, fill=green!30},
    process/.style = {base, minimum width=2.5cm, fill=orange!15,
    font=\ttfamily},
    back group/.style={fill=gray!20,rounded corners, draw=black!50, dashed, inner xsep=15pt, inner ysep=10pt}
}


    \begin{tikzpicture}[node distance=1.5cm, every node/.style={fill=white, font=\sffamily}, align=center, scale=0.7, transform shape]
        % Specification of nodes (position, etc.)
        \node (start) [activityStarts] {Start Node};    
        \node (lit) [process, right = of start] {ProcNode};
        \node (data) [process, right = of lit] {ProcTwo};
        \node (eda) [process, right = of data] {ProcThree};
        \node (reseldev) [activityRuns, below = 4cm of start] {BigProcess}; 
        \node (res2) [process, right = of reseldev] {Res 2};
        \node (res1) [process, above = of res2] {Res 1};
        \node (res3) [process, below = of res2] {Res 3};
        \draw [->] (start) -- (lit);
        \draw [->] (lit) -- (data);
        \draw [->] (data) -- (eda);
        \draw [->, rounded corners=5pt] (eda) -- ++ (0,0) |-  (reseldev);
        \draw [->] (reseldev) -- (res1);
        \draw [->] (reseldev) -- (res2);
        \draw [->] (reseldev) -- (res3);
    \end{tikzpicture}


\end{document}

答案1

您可以使用该ext.paths.ortho库（库集的一部分tikz-extra）进行之字形连接，如下所示：

% vim:ft=tex:
%
\documentclass{standalone}

% TiKz drawing
\usepackage{tikz}
\usetikzlibrary{
    matrix,
    arrows.meta,
    positioning,
    scopes,
    backgrounds,
    fit,
    ext.paths.ortho}


\begin{document}
% Define set to use across flow charts
\tikzset{%
    >={Latex[width=2mm,length=2mm]},
    % Specifications for style of nodes:
    base/.style = {rectangle, rounded corners, draw=black,
        minimum width=2cm, minimum height=1cm,
    text centered, font=\sffamily},
    activityStarts/.style = {base, fill=blue!30},
    startstop/.style = {base, fill=red!30},
    activityRuns/.style = {base, fill=green!30},
    process/.style = {base, minimum width=2.5cm, fill=orange!15,
    font=\ttfamily},
    back group/.style={fill=gray!20,rounded corners, draw=black!50, dashed, inner xsep=15pt, inner ysep=10pt}
}


    \begin{tikzpicture}[node distance=1.5cm, every node/.style={fill=white, font=\sffamily}, align=center, scale=0.7, transform shape]
        % Specification of nodes (position, etc.)
        \node (start) [activityStarts] {Start Node};    
        \node (lit) [process, right = of start] {ProcNode};
        \node (data) [process, right = of lit] {ProcTwo};
        \node (eda) [process, right = of data] {ProcThree};
        \node (reseldev) [activityRuns, below = 4cm of start] {BigProcess}; 
        \node (res2) [process, right = of reseldev] {Res 2};
        \node (res1) [process, above = of res2] {Res 1};
        \node (res3) [process, below = of res2] {Res 3};
        \draw [->] (start) -- (lit);
        \draw [->] (lit) -- (data);
        \draw [->] (data) -- (eda);
        \draw [->, rounded corners=5pt] (eda.south) |-|[ distance=.75cm]  (reseldev.north);
        \draw [->] (reseldev) -- (res1);
        \draw [->] (reseldev) -- (res2);
        \draw [->] (reseldev) -- (res3);
    \end{tikzpicture}


\end{document}

代码输出

答案2

稍微修改了@Alan Munn 的回答（+1），大部分都是题外话的建议：

  • 使用chains库来定位节点
  • P所有节点使用通用节点样式 ( )
  • reseldev使用循环在和res...节点之间绘制箭头
\documentclass[margin=3mm]{standalone}
\usepackage{tikz}
\usetikzlibrary{arrows.meta,
                chains,
                ext.paths.ortho,
                positioning,
                }

\begin{document}
    \begin{tikzpicture}[
node distance=8mm and 12 mm, 
   arr/.style = {-{Latex[width=2mm,length=2mm]}},
  base/.style = {rectangle, rounded corners, draw=,
                 minimum width=2cm, minimum height=1cm,
                 font=\sffamily},
     P/.style = {base, fill=#1},
                        ]
% Specification of nodes (position, etc.)
    \begin{scope}[start chain = going right,
                  nodes = {P=red!30,on chain, join=by arr}]
\node (start)   [P=blue!30] {Start Node};
\node (lit)                 {ProcNode};
\node (data)                {ProcTwo};
\node (eda)                 {ProcThree};
    \end{scope}
    \begin{scope}[start chain = going below,
                  nodes = {P=red!30,on chain}]
\node (res1) [below=of lit] {Res 1};
\node (res2)                {Res 2};
\node (res3)                {Res 3};
    \end{scope}
%
\node (reseldev) [P=green!30, left=of res2] {BigProcess};
% arrows out of join macro
\foreach \i in {res1, res2, res3}
\draw[arr]  (reseldev) -- (\i.west);

\draw [->, rounded corners] 
            (eda) |-|[ distance=4mm]  (reseldev);
    \end{tikzpicture}
\end{document}

在此处输入图片描述

答案3

尝试这个修改过的（部分）代码：

\begin{tikzpicture}[node distance=1.5cm, every node/.style={fill=white, font=\sffamily}, align=center, scale=0.7, transform shape]
        % Specification of nodes (position, etc.)
        \draw[gray!20] (0,0) grid (12,-8);% You can comment or delete this line
        \node (start) [activityStarts] {Start Node};    
        \node (lit) [process, right = of start] {ProcNode};
        \node (data) [process, right = of lit] {ProcTwo};
        \node (eda) [process, right = of data] {ProcThree};
        \node (reseldev) [activityRuns, below = 4cm of start] {BigProcess}; 
        \node (res2) [process, right = of reseldev] {Res 2};
        \node (res1) [process, above = of res2] {Res 1};
        \node (res3) [process, below = of res2] {Res 3};
        \draw [->] (start) -- (lit);
        \draw [->] (lit) -- (data);
        \draw [->] (data) -- (eda);
    %   \draw [->, rounded corners=5pt] (eda) -- ++ (0,0) |-  (reseldev);
        \draw [->] (reseldev) -- (res1);
        \draw [->] (reseldev) -- (res2);
        \draw [->] (reseldev) -- (res3);
        \draw[->] (eda.270)--(11.8,-1)--(0,-1)-- (reseldev);% <<< added
    \end{tikzpicture}

输出：

在此处输入图片描述

无论如何我认为这个解决方案更直接：

在此处输入图片描述

使用修改后的最终代码：

% vim:ft=tex:
\documentclass[border=10pt]{standalone}

% TiKz drawing
\usepackage{tikz}
\usetikzlibrary{
    matrix,
    arrows.meta,
    positioning,
    scopes,
    backgrounds,
    fit}


\begin{document}
    % Define set to use across flow charts
    \tikzset{%
        >={Latex[width=2mm,length=2mm]},
        % Specifications for style of nodes:
        base/.style = {rectangle, rounded corners, draw=black,
            minimum width=2cm, minimum height=1cm,
            text centered, font=\sffamily},
        activityStarts/.style = {base, fill=blue!30},
        startstop/.style = {base, fill=red!30},
        activityRuns/.style = {base, fill=green!30},
        process/.style = {base, minimum width=2.5cm, fill=orange!15,
            font=\ttfamily},
        back group/.style={fill=gray!20,rounded corners, draw=black!50, dashed, inner xsep=15pt, inner ysep=10pt}
    }
        
    \begin{tikzpicture}[node distance=1.5cm, every node/.style={fill=white, font=\sffamily}, align=center, scale=0.7, transform shape]
        % Specification of nodes (position, etc.)
        \node (start) [activityStarts] {Start Node};    
        \node (lit) [process, right = of start] {ProcNode};
        \node (data) [process, right = of lit] {ProcTwo};
        \node (eda) [process, right = of data]  {ProcThree};
        \node (reseldev) [activityRuns, below = 4cm of eda] {BigProcess}; 
        \node (res2) [process, left = of reseldev] {Res 2};
        \node (res1) [process, above = of res2] {Res 1};
        \node (res3) [process, below = of res2] {Res 3};
        \draw [->] (start) -- (lit);
        \draw [->] (lit) -- (data);
        \draw [->] (data) -- (eda);
        \draw [->] (reseldev) -- (res1);
        \draw [->] (reseldev) -- (res2);
        \draw [->] (reseldev) -- (res3);
        \draw[->] (eda)-- (reseldev);
    \end{tikzpicture}
        
\end{document}

相关内容