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删除一个节点的阴影

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删除一个节点的阴影

我有一个带有许多复杂树的 beamer 文档，因此我设置了颜色、阴影等的默认值。有没有办法从单个节点移除阴影？例如，在下面的树中，假设 Winesap 苹果应该没有阴影。我最接近的结果是[drop shadow={fill=white,opacity=1}]，但阴影仍然有一条微弱的灰色轮廓。并且该轮廓在 xpdf、evince、mupdf、zathura、acroread 甚至 ImageMagick 中都可见。

\documentclass{beamer}
\usecolortheme[named=teal]{structure}
\usepackage{tikz}
\usetikzlibrary{shadows,trees}
\begin{document}

\tikzset{edge from parent fork right,grow'=right,
every node/.style={rectangle,rounded corners,thick,draw=structure,fill=white,drop shadow},
edge from parent/.style={thick,draw=structure}}

\begin{frame}
\begin{tikzpicture}[level 1/.style={level distance=7em,sibling distance=9em},
        level 2/.style={level distance=7em,sibling distance=6em},
        level 3/.style={level distance=7em,sibling distance=3em}]
\node {food}
child {node {fruit}
child {node {apples}
child {node {Granny Smith}}
child {node[drop shadow={fill=white,opacity=1}] {Winesap}}}
child {node {pears}}}
child {node {veggies}
child {node {beets}}
child {node {Swiss chard}}};
\end{tikzpicture}
\end{frame}
\end{document}

在此处输入图片描述

答案1

您可以general shadow用杀死钥匙general shadows/.style=并将其用在孩子身上，即：

% Preamble:
\tikzset{no shadows/.style={general shadow/.style=}}

% In the tree:
  child[no shadows] {node {Winesap}}

这将禁用该孩子身上的所有阴影。

另一个选择是清空存储预操作的宏，例如

% Preamble:
\makeatletter
\tikzset{no shadows/.code=\let\tikz@preactions\pgfutil@empty}
\makeatother

% In the tree:
  child {node[no shadows] {Winesap}}

这将终止所有可能的预行动但只会影响这个节点。

代码A

\documentclass{beamer}
\usecolortheme[named=teal]{structure}
\usepackage{tikz}
\usetikzlibrary{shadows,trees}
\tikzset{
  edge from parent fork right,
  grow'=right,
  every node/.style={rectangle,rounded corners,thick,draw=structure,fill=white,drop shadow},
  edge from parent/.style={thick,draw=structure},
  no shadows/.style={general shadow/.style=},
}
\begin{document}
\begin{frame}
\begin{tikzpicture}[
  level 1/.style={level distance=7em,sibling distance=9em},
  level 2/.style={level distance=7em,sibling distance=6em},
  level 3/.style={level distance=7em,sibling distance=3em}]
\node {food}
  child {node {fruit}
    child {node {apples}
      child {node {Granny Smith}}
      child[no shadows] {node {Winesap}}
    }
    child {node {pears}}
  }
  child {node {veggies}
    child {node {beets}}
    child {node {Swiss chard}}
  };
\end{tikzpicture}
\end{frame}
\end{document}

代码 B

\documentclass{beamer}
\usecolortheme[named=teal]{structure}
\usepackage{tikz}
\usetikzlibrary{shadows,trees}
\makeatletter
\tikzset{no shadows/.code=\let\tikz@preactions\pgfutil@empty}
\makeatother
\tikzset{
  edge from parent fork right,
  grow'=right,
  every node/.style={rectangle,rounded corners,thick,draw=structure,fill=white,drop shadow},
  edge from parent/.style={thick,draw=structure},
}
\begin{document}
\begin{frame}
\begin{tikzpicture}[
  level 1/.style={level distance=7em,sibling distance=9em},
  level 2/.style={level distance=7em,sibling distance=6em},
  level 3/.style={level distance=7em,sibling distance=3em}]
\node {food}
  child {node {fruit}
    child {node {apples}
      child {node {Granny Smith}}
      child {node[no shadows] {Winesap}}
    }
    child {node {pears}}
  }
  child {node {veggies}
    child {node {beets}}
    child {node {Swiss chard}}
  };
\end{tikzpicture}
\end{frame}
\end{document}

答案2

这可能会变得很丑陋，但这里是藏身之处。如果你无法将其取下，请尝试将其遮盖起来。

\documentclass{beamer}
\usecolortheme[named=teal]{structure}
\usepackage{tikz}
\usetikzlibrary{shadows,trees}
\begin{document}

\tikzset{edge from parent fork right,grow'=right,
every node/.style={rectangle,rounded corners,thick,draw=structure,fill=white,drop shadow},
edge from parent/.style={thick,draw=structure}}


\begin{frame}
\begin{tikzpicture}[level 1/.style={level distance=7em,sibling distance=9em},
        level 2/.style={level distance=7em,sibling distance=6em},
        level 3/.style={level distance=7em,sibling distance=3em}]
\node {food}
child {node {fruit}
child {node {apples}
child {node {Granny Smith}}
child {node[general shadow={fill=white,shadow scale=2}] {Winesap}}}
child {node {pears}}}
child {node {veggies}
child {node {beets}}
child {node {Swiss chard}}};
\end{tikzpicture}
\end{frame}
\end{document}

node[general shadow={fill=white,shadow scale=2}]不会消除阴影，但会覆盖它。

在此处输入图片描述

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