如何绘制复杂图形

Question

我可以画一个简单的图表，像这样

但如果我想画一个像这样复杂的

我感到很沮丧。我该怎么办呢？

以下是我绘制第一个图的代码。

\documentclass[]{standalone}
\usepackage{wangyan}
\usetikzlibrary{arrows}
\begin{document}

\begin{tikzpicture}[<->,>=stealth',shorten >=1pt,auto,node distance=2cm, thick,main node/.style={circle,fill=blue!20,draw,font=\sffamily\Large\bfseries}]
  \node[main node] (1) {1};
  \node[main node] (2) [right of=1]  {2};
  \node[main node] (3) [right of=2]  {3};
   \node[main node] (4) [below of=3] {4};
  \node[main node] (5) [below  of=4] {5};
  \node[main node] (6) [left of=5]   {6};
  \node[main node] (7) [left of=6]   {7};
  \node[main node] (8) [below  of=1] {8};


  \path[every node/.style={font=\sffamily\small}]
    (1) edge [right] node[left]   {$$} (2)
    (2) edge [right] node[left]   {$$} (3)
    (3) edge [right] node[right]  {$$} (4)
    (4) edge [below] node[right]  {$$} (5)
    (5) edge [right] node[right]  {$$} (6)
    (6) edge [below] node[right]  {$$} (7)
    (7) edge [right] node[right]  {$$} (8)
    (8) edge [below] node[right]  {$$} (1) ;
\end{tikzpicture}
\end{document}

Answer 1

我将使用极坐标中的移位来定位节点；在下面的示例代码中，我首先放置节点“6”，并将其用作放置所有其他节点的起点：

\documentclass[border=3pt]{standalone}
\usepackage{tikz}
\usetikzlibrary{arrows}

\begin{document}

\begin{tikzpicture}[
  <->,
  >=stealth',
  shorten >=1pt,
  shorten <=1pt,
  auto,
  thick,
  main node/.style={
    circle,
    fill=blue!20,
    draw,
    font=\sffamily\Large\bfseries,
    minimum size=25pt
  }
]
\node[main node] (6) {$6$};
\node[main node]
  at ([shift={(30:3cm)}]6) 
  (5) {$5$};
\node[main node]
  at ([shift={(150:3cm)}]6) 
  (7) {$7$};
\node[main node]
  at ([shift={(80:4cm)}]6) 
  (10) {$10$};
\node[main node]
  at ([shift={(115:4cm)}]6) 
  (9) {$9$};
\node[main node]
  at ([shift={(130:3cm)}]7) 
  (8) {$8$};
\node[main node]
  at ([shift={(110:3cm)}]8) 
  (1) {$1$};
\node[main node]
  at ([shift={(110:4cm)}]9) 
  (2) {$2$};
\node[main node]
  at ([shift={(85:3cm)}]10) 
  (3) {$3$};
\node[main node]
  at ([shift={(85:4cm)}]5) 
  (4) {$4$};
\path
  (1) edge (2)
  (2) edge (3)  
  (3) edge (4)  
  (4) edge (5)  
  (5) edge (6)  
  (6) edge (7)  
  (7) edge (8)
  (8) edge (1)
  (2) edge (8)
  (8) edge (3)
  (3) edge (10)
  (10) edge (6)
  (7) edge (9)
  (9) edge (2)
  (9) edge (10)
  (10) edge (5)
  ;  
\end{tikzpicture}

\end{document}

结果：