![避免重复填充图纸](https://linux22.com/image/479193/%E9%81%BF%E5%85%8D%E9%87%8D%E5%A4%8D%E5%A1%AB%E5%85%85%E5%9B%BE%E7%BA%B8.png)
制作以下绘图
我使用了以下代码,来自答案这个问题
\documentclass{beamer}
\beamertemplatenavigationsymbolsempty
\usepackage{tikz}
\begin{document}
\begin{frame}[t]
\frametitle{Spirograph 1}
\begin{tikzpicture}[pics/fcross/.style={code={
\begin{scope}[transparency group,opacity=.4, scale=2]
\draw[line width=.1cm,blue, fill=blue!40!white, looseness=1]
(0,0) node {x} (0,-2) foreach \X in {0,90,180,270}
{[rotate=\X] -- (0,-2) to [out=0,in=-120] ++ (0.2,0.1) to [out=60,in=-150] ++ (1.7,1.7) to [out=30,in=-90] ++ (0.1,0.2)} -- cycle;
\end{scope}
}}]
\path foreach \Y in {0,30,60} {pic[rotate=\Y] {fcross}};
\end{tikzpicture}
\end{frame}
\end{document}
如何才能避免重复绘制的填充,产生均匀的填充
答案1
您可以将这transparency group
三张图片包裹起来,并将其设置为blend group
withlighten
选项。这样填充就会均匀。不幸的是,您似乎仍然需要单独添加轮廓。
\documentclass{beamer}
\beamertemplatenavigationsymbolsempty
\usepackage{tikz}
\begin{document}
\begin{frame}[t]
\frametitle{rounded corners solution 1}
\begin{tikzpicture}[pics/fcross/.style={code={
\path[line width=.1cm,fill=blue!40!white, looseness=1,pic actions]
(0,0) node {x} (0,-2) foreach \X in {0,90,180,270}
{[rotate=\X] -- (0,-2) to [out=0,in=-120] ++ (0.2,0.1) to [out=60,in=-150] ++ (1.7,1.7) to [out=30,in=-90] ++ (0.1,0.2)} -- cycle;
%\end{scope}
}}]
\begin{scope}[blend group=lighten,fill opacity=.4]
\path foreach \Y in {0,30,60} {pic[rotate=\Y,scale=2] {fcross}};
\end{scope}
\path foreach \Y in {0,30,60} {pic[rotate=\Y,scale=2,fill=none,draw,blue!40] {fcross}};
\end{tikzpicture}
\end{frame}
\end{document}