我想在矩形的上方和下方放置一些边距，但似乎没有\Block简单的选项来实现这一点
一种解决方案是使用自定义命令，如下所示
\newlength{\heightbigstrut}
\setlength{\heightbigstrut}{3mm}
\newcommand{\bigstrutX}[2][0]{
\ifthenelse{\equal{#1}{0}}
% No optional argument is provided
{\renewcommand{\bigstrutjot}{\heightbigstrut} \bigstrut[#2]}
% Optional argument provided
{\renewcommand{\bigstrutjot}{#1} \bigstrut[#2]}
}
这达到了预期的结果，但我认为最好得到一个nicematrix有助于实现类似结果的选项
\documentclass[aspectratio=169, xcolor={x11names}, t, handout]{beamer}
\usepackage{ifthen}
\usepackage[x11names]{xcolor}
\usetheme{Dresden}
\usefonttheme{professionalfonts}
\newcommand{\phasor}[1]{\mathbf{#1}}
\usepackage{nicematrix}
% BEGIN_FOLD
\newcolumntype{e}{@{{$\mspace{\thinmuskip}$}}c@{{$\mspace{\thinmuskip}$}}}
% END_FOLD
\usepackage{booktabs}
% BEGIN_FOLD
\newcommand{\basmahspace}{\mspace{0.61\thinmuskip}}
% END_FOLD
\usepackage{bigstrut}
% BEGIN_FOLD
\newlength{\heightbigstrut}
\setlength{\heightbigstrut}{3mm}
\newcommand{\bigstrutX}[2][0]{
\ifthenelse{\equal{#1}{0}}
% No optional argument is provided
{\renewcommand{\bigstrutjot}{\heightbigstrut} \bigstrut[#2]}
% Optional argument provided
{\renewcommand{\bigstrutjot}{#1} \bigstrut[#2]}
}
% END_FOLD
% ==========================================================================
% math commands customizations
% BEGIN_FOLD
\newcommand{\cosX}[1]{\cos\left(#1\right)}
\newcommand{\sinX}[1]{\sin\left(#1\right)}
\newcommand{\atan}[1]{\tan^{-1} \left( #1 \right)}
% END_FOLD
\begin{document}
\begin{frame}
\begin{equation}
\begin{NiceArray}{r @{\quad}l @{\quad\quad}>{\thickspace}l@{\thickspace}}
\alpha > \omega_{0}
& \text{Overdamped}
& \Block[draw=Coral3, rounded-corners]{3-1}{}
v(t) = A_{1} \basmahspace \mathrm{e}^{s_{1} \basmahspace t} + A_{2} \basmahspace \mathrm{e}^{s_{2} \basmahspace t}
\bigstrutX[0.5mm]{t}
\\
\alpha = \omega_{0}
& \text{Critically Damped}
& v(t) = (A_{1} + A_{2} \basmahspace t ) \basmahspace \mathrm{e}^{-\alpha \basmahspace t}
\\
\alpha < \omega_{0}
& \text{Underdamped}
& v(t) = \mathrm{e}^{-\alpha \basmahspace t} \basmahspace (A_{1} \cosX{\omega_{d} \basmahspace t} + A_{2} \sinX{\omega_{d} \basmahspace t})
\bigstrutX[0.5mm]{b}
\CodeAfter
\SubMatrix{\rbrace}{1-2}{3-2}{.}
\end{NiceArray}
\end{equation}
\begin{equation}
\setlength{\arraycolsep}{0pt}
\everymath{\displaystyle}
\begin{NiceArray}{e @{}l l@{\thickspace}}
\Block[draw=Coral3, rounded-corners]{2-3}{}
Z &= \sqrt{R^{2} + X^{2}} & \quad \text{\alert{magnitude}}
\bigstrutX[3mm]{t}
\\
\theta_{z} &= \atan{\frac{\pm X}{R}} & \quad \text{\alert{angle}}
\bigstrutX[3mm]{b}
\CodeAfter
\SubMatrix.{1-2}{2-2}\rbrace
\end{NiceArray}
\end{equation}
\end{frame}
\end{document}
答案1
一种方法是使用NiceMatrix 的cell-space-top-limit和cell-space-bottom-limit键，使用命令在第一行和最后一行添加额外空间\RowStyle。这种方法的一个问题是，由于它使单元格变大，\rbrace第二个矩阵中的也会变大，并且会延伸到边缘。因此，您可以使用可选参数和带有较小负值的键\Block来稍微减小尺寸。\SubMatrixextra-height
梅威瑟：
\PassOptionsToPackage{x11names}{xcolor}
\documentclass[aspectratio=169, t, handout]{beamer}
\usepackage{tikz}
\usepackage{ifthen}
\usetheme{Dresden}
\usefonttheme{professionalfonts}
\newcommand{\phasor}[1]{\mathbf{#1}}
\usepackage{nicematrix}
\newcolumntype{e}{@{{$\mspace{\thinmuskip}$}}c@{{$\mspace{\thinmuskip}$}}}
\usepackage{booktabs}
\newcommand{\basmahspace}{\mspace{0.61\thinmuskip}}
% ==========================================================================
% math commands customizations
\newcommand{\cosX}[1]{\cos\left(#1\right)}
\newcommand{\sinX}[1]{\sin\left(#1\right)}
\newcommand{\atan}[1]{\tan^{-1} \left( #1 \right)}
\begin{document}
\begin{frame}
\begin{equation}
\begin{NiceArray}{r @{\quad}l @{\quad\quad}>{\thickspace}l@{\thickspace}}
\RowStyle[cell-space-top-limit=1mm]{}
\alpha > \omega_{0}
& \text{Overdamped}
& \Block[draw=Coral3, rounded-corners]{3-1}{}
v(t) = A_{1} \basmahspace \mathrm{e}^{s_{1} \basmahspace t} + A_{2} \basmahspace \mathrm{e}^{s_{2} \basmahspace t}
\\
\alpha = \omega_{0}
& \text{Critically Damped}
& v(t) = (A_{1} + A_{2} \basmahspace t ) \basmahspace \mathrm{e}^{-\alpha \basmahspace t}
\\
\RowStyle[cell-space-bottom-limit=1mm]{}
\alpha < \omega_{0}
& \text{Underdamped}
& v(t) = \mathrm{e}^{-\alpha \basmahspace t} \basmahspace (A_{1} \cosX{\omega_{d} \basmahspace t} + A_{2} \sinX{\omega_{d} \basmahspace t})
\CodeAfter
\SubMatrix{\rbrace}{1-2}{3-2}{.}
\end{NiceArray}
\end{equation}
\begin{equation}
\setlength{\arraycolsep}{0pt}
\everymath{\displaystyle}
\begin{NiceArray}{e @{}l l@{\thickspace}}
\RowStyle[cell-space-top-limit=2mm]{}
\Block[draw=Coral3, rounded-corners]{2-3}{}
Z &= \sqrt{R^{2} + X^{2}} & \quad \text{\alert{magnitude}}
\\
\RowStyle[cell-space-bottom-limit=2mm]{}
\theta_{z} &= \atan{\frac{\pm X}{R}} & \quad \text{\alert{angle}}
\CodeAfter
\SubMatrix.{1-2}{2-2}\rbrace[extra-height=-3mm]
\end{NiceArray}
\end{equation}
\end{frame}
\end{document}
结果：
