我目前正在尝试绘制食人族和传教士的图表，到目前为止我已经
，但是我的某些代码效率低下，特别是有没有办法使 c 和 m 字符的定位功能化。
\documentclass[varwidth]{standalone}
\usepackage{ifthen}
\usepackage{tikz}
\usetikzlibrary{positioning}
\usetikzlibrary{chains}
\usetikzlibrary{shapes.multipart}
% SEE https://tex.stackexchange.com/questions/198813/how-to-make-a-boat-symbol-in-latex
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\newcommand*\drawitem[3]%
{%
\ifthenelse{\equal{#1}{0}}
{\foreach \x in {}}
{ \ifthenelse{\equal{#1}{1}}
{\foreach \x in {0,1}}
{\foreach \x in {1,...,#1}}
}
\draw[xscale=0.5,yscale=0.5] (#2)
node[draw=none, xshift=0-\x*0.15cm, font=\small] (s\x) {\tiny{c}};
}
% \usepackage{fontawesome5}
\begin{document}
\tikzset{
pics/can_mission/.style args={#1/#2/#3/#4/#5}{
code = {
\node[river,draw=none] (root) {
\nodepart{one}
\nodepart[color=blue, draw=none]{two}
\ifthenelse{\equal{\detokenize{#3}}{\detokenize{left}}}
{ {\myboatleft} }
{ {\myboatright} }
\nodepart{three}
};
% Cannibals left
\ifthenelse{\equal{#1}{0}}
{\foreach \x in {}}
{ \ifthenelse{\equal{#1}{1}}
{\foreach \x in {0,1}}
{\foreach \x in {1,...,#1}}
}
\draw[color=red,xscale=0.5,yscale=0.5] (root.one) node[draw=none, yshift=0.15cm, xshift=0-\x*0.20cm, font=\small] (s\x) {\tiny{c}};
% COULDN"T GET THIS TO WORK
% \drawitem[#1,root.two,c];
% Missionaries left
\ifthenelse{\equal{#2}{0}}
{\foreach \x in {}}
{ \ifthenelse{\equal{#2}{1}}
{\foreach \x in {0,1}}
{\foreach \x in {1,...,#2}}
}
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% Cannibals right
\ifthenelse{\equal{#4}{0}}
{\foreach \x in {}}
{ \ifthenelse{\equal{#4}{1}}
{\foreach \x in {0,1}}
{\foreach \x in {1,...,#4}}
}
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% \relation[#1]{root.two,c};
% Missionaries right
\ifthenelse{\equal{#5}{0}}
{\foreach \x in {}}
{ \ifthenelse{\equal{#5}{1}}
{\foreach \x in {0,1}}
{\foreach \x in {1,...,#5}}
}
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}
},
% Adding cannibals and missionaries
river/.style={rotate=90, rectangle split, minimum width= 1 cm, rectangle split parts=3,draw, anchor=center, rectangle split part fill={white!60,blue!60,white!60}},
}
\begin{tikzpicture}[draw=none]
\draw pic {can_mission=0/0/right/3/3};
\hfill \break
\end{tikzpicture}
\end{document}
答案1
我认为至少部分解决了问题，即使不是完全解决了。首先，您无法以您尝试的方式扩展循环。以下版本\drawitem根据第一个参数定义循环列表
\newcommand*\drawitem[3]%
{%
\ifnum#1=0
\edef\mylist{}
\else
\ifnum#1=1
\edef\mylist{0,1}
\else
\edef\mylist{1,...,#1}
\fi
\foreach \x in \mylist
{\draw[xscale=0.5,yscale=0.5] (#2)
node[draw=none, xshift=0-\x*0.15cm, font=\small] (s\x) {\tiny{c}};}
\fi
}
您选择将其定义为三个参数的命令，因此您需要按如下方式使用它：
\drawitem{#1}{root.two}{c};
完整代码：
\documentclass[tikz]{standalone}
\usepackage{ifthen}
\usetikzlibrary{positioning}
\usetikzlibrary{chains}
\usetikzlibrary{shapes.multipart}
% SEE https://tex.stackexchange.com/questions/198813/how-to-make-a-boat-symbol-in-latex
\newcommand*{\myboatleft}{%
\protect\raisebox{-0.0000165em}{%
\protect\begin{tikzpicture}[ x=0.08em, y=0.08em, xscale=0.05, yscale=-0.05, inner
sep=0pt, outer sep=0pt, rotate=90]
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\newcommand*\drawitem[3]%
{%
\ifnum#1=0
\edef\mylist{}
\else
\ifnum#1=1
\edef\mylist{0,1}
\else
\edef\mylist{1,...,#1}
\fi
\foreach \x in \mylist
{\draw[xscale=0.5,yscale=0.5] (#2)
node[draw=none, xshift=0-\x*0.15cm, font=\small] (s\x) {\tiny{c}};}
\fi
}
% \usepackage{fontawesome5}
\begin{document}
\tikzset{
pics/can_mission/.style args={#1/#2/#3/#4/#5}{
code = {
\node[river,draw=none] (root) {
\nodepart{one}
\nodepart[color=blue, draw=none]{two}
\ifthenelse{\equal{\detokenize{#3}}{\detokenize{left}}}
{ {\myboatleft} }
{ {\myboatright} }
\nodepart{three}
};
% Cannibals left
\ifthenelse{\equal{#1}{0}}
{\foreach \x in {}}
{ \ifthenelse{\equal{#1}{1}}
{\foreach \x in {0,1}}
{\foreach \x in {1,...,#1}}
}
\draw[color=red,xscale=0.5,yscale=0.5] (root.one) node[draw=none, yshift=0.15cm, xshift=0-\x*0.20cm, font=\small] (s\x) {\tiny{c}};
% COULDN"T GET THIS TO WORK
\drawitem{#1}{root.two}{c};
% Missionaries left
\ifthenelse{\equal{#2}{0}}
{\foreach \x in {}}
{ \ifthenelse{\equal{#2}{1}}
{\foreach \x in {0,1}}
{\foreach \x in {1,...,#2}}
}
\draw[color=green, xscale=0.5,yscale=0.5] (root.one) node[draw=none, yshift=-0.15cm, xshift=0-\x*0.20cm, font=\small] (s\x) {\tiny{m}};
% Cannibals right
\ifthenelse{\equal{#4}{0}}
{\foreach \x in {}}
{ \ifthenelse{\equal{#4}{1}}
{\foreach \x in {0,1}}
{\foreach \x in {1,...,#4}}
}
\draw[color=red,xscale=0.5,yscale=0.5] (root.three) node[draw=none, yshift=0.15cm, xshift=0+\x*0.20cm, font=\small] (s\x) {\tiny{c}};
% \relation[#1]{root.two,c};
% Missionaries right
\ifthenelse{\equal{#5}{0}}
{\foreach \x in {}}
{ \ifthenelse{\equal{#5}{1}}
{\foreach \x in {0,1}}
{\foreach \x in {1,...,#5}}
}
\draw[color=green, xscale=0.5,yscale=0.5] (root.three) node[draw=none, yshift=-0.15cm, xshift=0+\x*0.20cm, font=\small] (s\x) {\tiny{m}};
}
},
% Adding cannibals and missionaries
river/.style={rotate=90, rectangle split, minimum width= 1 cm, rectangle split parts=3,draw, anchor=center, rectangle split part fill={white!60,blue!60,white!60}},
}
\begin{tikzpicture}[draw=none]
\draw pic {can_mission=2/0/right/3/3};
\hfill \break
\end{tikzpicture}
\end{document}
我不知道这是否能解决你的所有问题。