路线要怎样做？

Question

我想做下一个绘图。

但是，我无法按照标记的路线行驶。

\documentclass{article}

\usepackage[x11names]{xcolor}

\usepackage{tikz}

\usepackage{tkz-euclide}

\usetkzobj{all}

\begin{document}

\begin{tikzpicture}

\def\side{1}

\foreach \j in {1,...,5}{

\begin{scope}[shift={(-60:\side*\j)}]

\foreach \i in {1,...,\j}{

\begin{scope}[shift={(0:-\side*\i)}]

\tkzDefPoint (0,0){A}

\tkzDefPoint (0:\side){B}

\tkzDefPoint (60:\side){C}

\tkzDrawPolygon[top color=LightSteelBlue4](A,B,C)

\end{scope}

}

\end{scope}

}

\end{tikzpicture}

\end{document}

Answer 1

这个turtle库可以在这里使用，虽然重写“金字塔”代码使得定位乌龟的起点变得更容易一些：

\documentclass[border=5]{standalone}
\usepackage[x11names]{xcolor}
\usepackage{tikz}
\usetikzlibrary{turtle}
\tikzset{turtle/.cd,
  S/.style={home, left=180},
  L/.style={left=60, forward},
  R/.style={right=60, forward},
  F/.style={forward}
}
\begin{document}
\begin{tikzpicture}[line join=round, line cap=round, very thick]
\foreach \i in {0,...,4}
  \foreach \j [evaluate={\x=(\j*2-\i)*cos(30); \y=-\i*1.5;}] in {0,...,\i}
    \draw [shift={(\x,\y)}, top color=LightSteelBlue4]
       (90:1) -- (210:1) -- (330:1) -- cycle;
\draw [turtle={
      S, F, L, R, R, R, L, L, L, L, R, L, R, R, R, R, L, R, L, R, L
    }];
\end{tikzpicture}
\end{document}