![重复阴影](https://linux22.com/image/292670/%E9%87%8D%E5%A4%8D%E9%98%B4%E5%BD%B1.png)
如果你仔细观察这张图片中的凸起文本,你会看到它有两个阴影:除了文本东南方向的黑色阴影外,西北方向还有一个白色阴影。我知道如何在 tikz 中插入一个阴影,例如
drop shadow={shadow xshift=-0.5mm,shadow yshift=-0.5mm,black}
有没有简单的方法可以添加两种指定类型的阴影?(注意:能够通过指定“光线方向”shadow xshift
非常shadow yshift
有用。)
答案1
重复阴影
使用键preaction
可以插入另一个阴影,例如:
\documentclass{article}
\usepackage{xcolor}
\usepackage{tikz}
\usetikzlibrary{shadows}
\begin{document}
\begin{tikzpicture}
\fill[lightgray] (0,0) rectangle (2,2);
\node[
fill=darkgray,
preaction={
drop shadow={
fill=white,
opacity=1,
shadow xshift=-.5mm,
shadow yshift=.5mm,
},
},
drop shadow={
fill=black,
opacity=1,
shadow xshift=.5mm,
shadow yshift=-.5mm
},
] at (1,1) {\rule{8mm}{0mm}\rule{0mm}{8mm}};
\end{tikzpicture}
\end{document}
这可以进一步简化。drop shadow
使用general shadow
,它已经通过 实现preaction
。因此preaction
可以删除该部分:
\node[
fill=darkgray,
drop shadow={
fill=white,
opacity=1,
shadow xshift=-.5mm,
shadow yshift=.5mm,
},
drop shadow={
fill=black,
opacity=1,
shadow xshift=.5mm,
shadow yshift=-.5mm
},
] at (1,1) {\rule{8mm}{0mm}\rule{0mm}{8mm}};
还可以定义一种样式来简化用例,例如:
\documentclass{article}
\usepackage{xcolor}
\usepackage{tikz}
\usetikzlibrary{shadows}
\pgfkeysdefnargs{/my/get value}{2}{%
\pgfkeysgetvalue{#1}{#2}%
}
\tikzset{
/tikz/drop raised shadow/.style={
drop shadow={%
fill=white,
opacity=1,
#1,%
/my/get value={/tikz/shadow xshift}{\xshift},
/my/get value={/tikz/shadow yshift}{\yshift},
shadow xshift=-\xshift,
shadow yshift=-\yshift,
},
drop shadow={%
fill=black,
opacity=1,
#1%
}
}
}
\begin{document}
\begin{tikzpicture}
\fill[lightgray] (0,0) rectangle (2,2);
\node[
fill=darkgray,
drop shadow={
fill=white,
opacity=1,
shadow xshift=-.5mm,
shadow yshift=.5mm,
},
drop shadow={
fill=black,
opacity=1,
shadow xshift=.5mm,
shadow yshift=-.5mm
},
] at (1,1) {\rule{8mm}{0mm}\rule{0mm}{8mm}};
\end{tikzpicture}
\quad
\begin{tikzpicture}
\fill[lightgray] (0,0) rectangle (2,2);
\node[
fill=darkgray,
drop raised shadow={
shadow xshift=.5mm,
shadow yshift=-.5mm,
},
] at (1,1) {\rule{8mm}{0mm}\rule{0mm}{8mm}};
\end{tikzpicture}
\end{document}
文字阴影
以下没有包的版本tikz
将文本设置了三次,首先是白色,向左移动并凸起,然后是黑色,向右和向下,最后是文本:
\documentclass{article}
\usepackage{xcolor}
\newcommand*{\RaisedText}[1]{%
\begingroup
\leavevmode
\rlap{\kern-.1pt\raise.1pt\hbox{\color{white}#1}}%
\rlap{\kern.1pt\raise-.1pt\hbox{\color{black}#1}}%
\hbox{#1}%
\endgroup
}
\begin{document}
\colorbox{lightgray}{%
\color{darkgray}\RaisedText{Raised Text}%
}
\end{document}
带有包装的变体pdfrender
:
\documentclass{article}
\usepackage{xcolor}
\usepackage{pdfrender}
\newcommand*{\RaisedText}[1]{%
\begingroup
\leavevmode
\rlap{\kern-.1pt\raise.1pt\hbox{%
\pdfrender{
TextRenderingMode=Stroke,
LineWidth=.2pt,
StrokeColor=white,
}#1%
}}%
\rlap{\kern.1pt\raise-.1pt\hbox{%
\pdfrender{
TextRenderingMode=Stroke,
LineWidth=.2pt,
StrokeColor=black,
}#1%
}}%
\rlap{%
\pdfrender{
TextRenderingMode=Stroke,
LineWidth=.2pt,
}#1%
}%
\hbox{#1}%
\endgroup
}
\begin{document}
\colorbox{lightgray}{%
\color{darkgray}\RaisedText{Raised Text}%
}
\end{document}