如何在 LaTeX 中使用 TikZ 绘制下面的图形？

Question

请帮我用 LaTex 画这个。即使只有几个节点，我也会尽力完成它。我只是不知道该使用什么语法。谢谢。

这是我得到的，但是边缘值的输出不太清晰。我该如何避免这种情况？

    [third corner of triangle={A=A,B=B,a=2.1,b=2.4}]
            coordinate[bullet={below left:$I$}] (I)
    [third corner of triangle={A=I,B=B,a=2.6,b=3.6}]
            coordinate[bullet={above:$C$}] (C)
    [third corner of triangle={A=I,B=C,a=3.3,b=2.8}]
            coordinate[bullet={above leftf:$J$}] (J)
    [third corner of triangle={A=A,B=I,a=1.8,b=3.4}]
            coordinate[bullet={below :$H$}] (H)
    [third corner of triangle={A=H,B=J,a=3.2,b=1.7}]
            coordinate[bullet={below:$G$}] (G)
    [third corner of triangle={A=G,B=C,a=2.9,b=5.3}]
            coordinate[bullet={above:$D$}] (D)
    [third corner of triangle={A=D,B=C,a=4.2,b=2.2}]
            coordinate[bullet={right:$E$}] (E)
    [third corner of triangle={A=J,B=E,a=4.4,b=2.5}]
            coordinate[bullet={below:$F$}] (F)

    (B) edge["2.6"] (C) 
    (A) edge["3.4"] (H) 
        edge["2.4"] (I) 
    (I) edge["1.8"] (H) 
        edge["2.1"] (B)
        edge["2.8"] (J)
    (C) edge["3.3"] (J)
        edge["3.6"] (I)
    (D) edge["2.9"] (C)
        edge["5.3"] (G)
    (E) edge["4.2"] (C)
        edge["2.2"] (D)
        edge["4.4"] (F)
    (F) edge["2.1"] (D)
        edge["2.5"] (J)
    (G) edge["1.7"] (H)
        edge["3.2"] (J)
        edge["5.3"] (D);

Answer 1

欢迎！三角形完全由两个角和其他边的长度固定。可以为此定义一种样式。该样式可以用作

[third corner of triangle={A=<name of first corner>,
  B=<name of second corner>,
  a=<length of side opposite to first corner>,
  b=<length of side opposite to second corner>}]

这允许您绘制图表。下面是开始。

\documentclass[tikz,border=3mm]{standalone}
\usetikzlibrary{calc,quotes}
\begin{document}
\begin{tikzpicture}[bullet/.style={circle,draw,fill,inner sep=1.5pt,label=#1},
    auto,shortcut/.code={\def\pv##1{\pgfkeysvalueof{/tikz/#1/##1}}},
    third corner of triangle/.style={shortcut=triangle pars,
    triangle pars/.cd,#1,
    /tikz/insert path={
     let \p1=($(\pv{A})-(\pv{B})$),\n1={sqrt(pow(\x1/1cm,2)+pow(\y1/1cm,2))},
      \n2={atan2(\y1,\x1)} in
     (intersection cs:first line={(\pv{A})--($(\pv{A})+({\n2-cosinelaw(\n1,\pv{b},\pv{a})}:1)$)},
     second line={(\pv{B})--($(\pv{B})+({\n2+cosinelaw(\n1,\pv{a},\pv{b})}:1)$)})
    }},
  declare function={cosinelaw(\a,\b,\c)=acos((\a*\a+\b*\b-\c*\c)/(2*\a*\b));},
  triangle pars/.cd,
  A/.initial=A,B/.initial=B,a/.initial=2,b/.initial=2]
 \draw (0,0) coordinate[bullet={left:$A$}] (A)
    to["2.7"] ++ (50:2.7) coordinate[bullet={above:$B$}] (B)
  [third corner of triangle={A=A,B=B,a=2.1,b=2.4}]
    coordinate[bullet={below:$I$}] (I)
  [third corner of triangle={A=I,B=B,a=2.6,b=3.6}]
    coordinate[bullet={above:$C$}] (C)
  [third corner of triangle={A=I,B=C,a=3.3,b=2.8}]
    coordinate[bullet={above:$J$}] (J)
  [third corner of triangle={A=A,B=I,a=1.8,b=3.4}]
    coordinate[bullet={left:$H$}] (H)
  (B) edge["2.6"] (C) 
  (A) edge["3.4"] (H) 
      edge["2.4"] (I) 
  (I) edge["1.8"] (H) 
      edge["2.1"] (B)
      edge["2.8"] (J)
  (C) edge["3.3"] (J)
      edge["3.6"] (I);
\end{tikzpicture}

\end{document}