我首先要说明我最终想要得到的结果。我希望两幅图像并排。我希望点 G 在两张图片之间水平对齐，并且我希望两幅图像的比例相同。（左侧 GA 之间的距离与右侧 GA 之间的距离相同，但旋转角度不同）。最后，我希望左侧图像 G 位于页面左半部分的中心，右侧图像 G 位于页面右半部分的中心。
我的代码当前的工作方式是，两者之间的比例相同（因为它们都在同一个 tikzpicture 中），并且 G 点是水平的，因为它们在代码中都在 y=0 处。
我没有左右居中。因为左侧图片上的文本较多，所以它会将两张图片推到右侧。此外，这种方法有点失败，因为我手动指定了左侧和右侧 G 之间的距离。
如果我能够让 G 点的中点在页面上水平居中，我会对两者之间的这个固定距离感到满意。
我也尝试过做子图，但它们似乎会弄乱缩放比例，而且我仍然无法让点 G 在图形调整大小框中水平居中。
有人能帮助我让它正确居中而不需要过多地修改我的代码吗？
编辑：我想出了一个临时的解决方法，即在 tikzpicture 中画一条线，该线的左 G 和右 G 的中点居中，并且比图片更宽。但这似乎是一个粗略的解决方法。此外，还添加了更多序言和 \begin{document}。应该是一个可用的版本。
EDIT2：另外，如果您发现有其他方法可以改进我做事的方式，请提出建议。我对使用 Tikz 还很陌生，对很多细节还不太了解。
\documentclass{article}
\usepackage[margin=1in]{geometry}
\usepackage{tikz}
\usepackage{caption,subcaption}
\newcommand\centerarc[6]{
% \centerarc{format}{center_x}{center_y}{radius}{start angle}{end angle};
\draw[#1] ({#2+#4*cos(#5 )},{#3+#4*sin(#5 )}) arc [radius=#4, start angle =#5, end angle=#6];
}
\newcommand\centerofmass{
\tikz[radius=0.4em] {
\fill (0,0) -- ++(0.4em,0) arc [start angle=0,end angle=90] -- ++(0,-0.8em) arc [start angle=270, end angle=180];
\fill [color=white] (0,0) -- ++(0,0.4em) arc [start angle=90,end angle=180] -- ++(0.8em,0) arc [start angle=0, end angle=-90];
\draw (0,0) circle;
}
}
\begin{document}
\begin{figure}[]
\centering
\resizebox{!}{5in}{
\begin{tikzpicture}[scale=0.5,>=stealth]
\draw[line width=8pt, cap=round] (0,0)--(0,0.9);
\draw[line width=8pt, cap=round] (0,0.9)--(0,5.1);
\draw[line width=8pt, cap=round] (0,5.1)--(0,9.9);
\draw[line width=8pt, cap=round] (0,9.9)--(0,18.1);
\filldraw[fill=white] (0,0) circle (0.2);
\filldraw[fill=white] (0,0.9) circle (0.2);
\filldraw[fill=white] (0,5.1) circle (0.2);
\filldraw[fill=white] (0,9.9) circle (0.2);
\filldraw[fill=white] (0,18.1) circle (0.2);
\node [] at (0,14) {\Large\centerofmass};
\node [left] at (-1,0) {Ground Contact Point $\to$ G};
\node [left] at (-1,0.9) {COR of Ankle $\to$ A};
\node [right] at (1,5.1) {K$\gets$ COR of Knee};
\node [left] at (-1,9.9) {COR of Hip $\to$ H};
\node [left] at (-1,18.1) {Crown $\to$ C};
\centerarc{}{0}{0.9}{0.7}{-90}{90};
\node [right] at (0.7,0.9) {$\alpha$};
\centerarc{}{0}{5.1}{0.7}{90}{270};
\node [left] at (-0.7,5.1) {$\theta$};
\centerarc{}{0}{9.9}{0.7}{-90}{90};
\node [right] at (0.7,9.9) {$\beta$};
\draw[line width=2pt, color=red, ->] (0,17)--(0,14);
\node[anchor=west, color=red] at (0.2,17) {$F=2mg$};
\draw[line width=2pt, color=red, ->] (0,-3)--(0,0);
\node[anchor=west, color=red] at (0.2,-3) {$F=2mg$};
\node[] at (0,-5) {(a)};
\def\slide{12}
\draw[line width=8pt, cap=round] (0+\slide,0)--(0+\slide,0.9);
\draw[line width=8pt, cap=round] (0+\slide,0.9)--(2.068+\slide,3.655+0.9);
\draw[line width=8pt, cap=round] (2.065+\slide,3.655+0.9)--(0+\slide,9.9-1.012);
\draw[dashed] (0+\slide,0.9) -- (0+\slide,9.9-1.012);
\draw[line width=8pt, cap=round] (0+\slide,9.9-1.012)--(0+\slide,18.1-1.012);
\filldraw[fill=white] (0+\slide,0) circle (0.2);
\filldraw[fill=white] (0+\slide,0.9) circle (0.2);
\filldraw[fill=white] (2.065+\slide,3.655+0.9) circle (0.2);
\filldraw[fill=white] (0+\slide,9.9-1.012) circle (0.2);
\filldraw[fill=white] (0+\slide,18.1-1.012) circle (0.2);
\node [] at (0+\slide,14-1.012) {\Large\centerofmass};
\node [left] at (-1+\slide,0) {G};
\node [left] at (-1+\slide,0.9) {A};
\node [right] at (1+2.065+\slide,3.655+0.9) {K};
\node [left] at (-1+\slide,9.9-1.012) {H};
\node [left] at (-1+\slide,18.1-1.012) {C};
\centerarc{}{0+\slide}{0.9}{0.7}{-90}{60.5};
\node [right] at (0.7+\slide,0.9) {$\alpha$};
\centerarc{}{2.068+\slide}{3.655+0.9}{0.7}{115}{240};
\node [left] at (-0.7+2.068+\slide,3.655+0.9) {$\theta$};
\centerarc{}{0+\slide}{9.9-1.012}{0.7}{90}{-65}
\node [right] at (0.7+\slide,9.9-1.012) {$\beta$};
\draw[line width=2pt, color=red, ->] (0+\slide,17-1.012)--(0+\slide,14-1.012);
\node[anchor=west, color=red] at (0.2+\slide,17-1.012) {$F=2mg$};
\draw[line width=2pt, color=red, ->] (0+\slide,-3)--(0+\slide,0);
\node[anchor=west, color=red] at (0.2+\slide,-3) {$F=2mg$};
\node[] at (0+\slide,-5) {(b)};
\end{tikzpicture}
}
\caption{\label{fig:stick}(a) Vertical standing position model and notation convention for lab. (b) Points $G,A,H,C$ always stay co-linear during the course of the motion.}
\end{figure}
\end{document}
答案1
有用的东西：
scope环境。这允许单独设置诸如scale//red之类的属性thick。\paperwidth、、\textwidth和72.27（这是您的边距）。xshift或一般而言shift={(1,2)}。\useasboundingbox。这让 TeX 重新考虑 的边界框（因此大小）tikzpicture。它类似于smash或，clap但更加灵活。
\documentclass{article}
\usepackage[margin=1in]{geometry}
\usepackage{tikz}
\usepackage{caption,subcaption}
\newcommand\centerarc[6]{
\draw[#1]({#2+#4*cos(#5)},{#3+#4*sin(#5)})arc[radius=#4,start angle=#5,end angle=#6];}
\newcommand\centerofmass{
\tikz[radius=0.4em]{
\fill(0,0)--++(0.4em,0)arc[start angle=0,end angle=90]--++(0,-0.8em)arc[start angle=270,end angle=180];
\fill[color=white](0,0)--++(0,0.4em)arc[start angle=90,end angle=180]--++(0.8em,0)arc[start angle=0,end angle=-90];\draw(0,0)circle;}}
\begin{document}
\begin{figure}
\noindent
\begin{tikzpicture}[>=stealth]
\useasboundingbox(-.25\paperwidth+72.27,-5)rectangle(0,7);
\begin{scope}[scale=0.5]
\draw[line width=8pt, cap=round] (0,0)--(0,0.9);
\draw[line width=8pt, cap=round] (0,0.9)--(0,5.1);
\draw[line width=8pt, cap=round] (0,5.1)--(0,9.9);
\draw[line width=8pt, cap=round] (0,9.9)--(0,18.1);
\filldraw[fill=white] (0,0) circle (0.2);
\filldraw[fill=white] (0,0.9) circle (0.2);
\filldraw[fill=white] (0,5.1) circle (0.2);
\filldraw[fill=white] (0,9.9) circle (0.2);
\filldraw[fill=white] (0,18.1) circle (0.2);
\node [] at (0,14) {\Large\centerofmass};
\node [left] at (-1,0) {Ground Contact Point $\to$ G};
\node [left] at (-1,0.9) {COR of Ankle $\to$ A};
\node [right] at (1,5.1) {K$\gets$ COR of Knee};
\node [left] at (-1,9.9) {COR of Hip $\to$ H};
\node [left] at (-1,18.1) {Crown $\to$ C};
\centerarc{}{0}{0.9}{0.7}{-90}{90};
\node [right] at (0.7,0.9) {$\alpha$};
\centerarc{}{0}{5.1}{0.7}{90}{270};
\node [left] at (-0.7,5.1) {$\theta$};
\centerarc{}{0}{9.9}{0.7}{-90}{90};
\node [right] at (0.7,9.9) {$\beta$};
\draw[line width=2pt, color=red, ->] (0,17)--(0,14);
\node[anchor=west, color=red] at (0.2,17) {$F=2mg$};
\draw[line width=2pt, color=red, ->] (0,-3)--(0,0);
\node[anchor=west, color=red] at (0.2,-3) {$F=2mg$};
\node[] at (0,-5) {(a)};
\def\slide{12}
\end{scope}
\begin{scope}[scale=0.5,xshift=\paperwidth]
\draw[line width=8pt, cap=round] (0,0)--(0,0.9);
\draw[line width=8pt, cap=round] (0,0.9)--(2.068,3.655+0.9);
\draw[line width=8pt, cap=round] (2.065,3.655+0.9)--(0,9.9-1.012);
\draw[dashed] (0,0.9) -- (0,9.9-1.012);
\draw[line width=8pt, cap=round] (0,9.9-1.012)--(0,18.1-1.012);
\filldraw[fill=white] (0,0) circle (0.2);
\filldraw[fill=white] (0,0.9) circle (0.2);
\filldraw[fill=white] (2.065,3.655+0.9) circle (0.2);
\filldraw[fill=white] (0,9.9-1.012) circle (0.2);
\filldraw[fill=white] (0,18.1-1.012) circle (0.2);
\node [] at (0,14-1.012) {\Large\centerofmass};
\node [left] at (-1,0) {G};
\node [left] at (-1,0.9) {A};
\node [right] at (1+2.065,3.655+0.9) {K};
\node [left] at (-1,9.9-1.012) {H};
\node [left] at (-1,18.1-1.012) {C};
\centerarc{}{0}{0.9}{0.7}{-90}{60.5};
\node [right] at (0.7,0.9) {$\alpha$};
\centerarc{}{2.068}{3.655+0.9}{0.7}{115}{240};
\node [left] at (-0.7+2.068,3.655+0.9) {$\theta$};
\centerarc{}{0}{9.9-1.012}{0.7}{90}{-65}
\node [right] at (0.7,9.9-1.012) {$\beta$};
\draw[line width=2pt, color=red, ->] (0,17-1.012)--(0,14-1.012);
\node[anchor=west, color=red] at (0.2,17-1.012) {$F=2mg$};
\draw[line width=2pt, color=red, ->] (0,-3)--(0,0);
\node[anchor=west, color=red] at (0.2,-3) {$F=2mg$};
\node[] at (0,-5) {(b)};
\end{scope}
\end{tikzpicture}
\caption{\label{fig:stick}(a) Vertical standing position model and notation convention for lab. (b) Points $G,A,H,C$ always stay co-linear during the course of the motion.}
\end{figure}
\end{document}