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beamer > beamercolorbox > Text with Shadow or Glow

tikz beamer pgf add tag

4 years ago Dr. Manuel Kuehner

This is a “fun” project.
I want to create a beamer presentation with a fancy title frame.
The goal is to have a black title frame with “bight colorful” text on it that looks like neon text (glowing).
It’s a bit inspired by the intro of the TV show “Stranger Things”.
Ideally, I want to stick to beamer’s beamercolorbox approach to build the title frame template.
I found some (partly older) related questions but I was hoping that by now there is a simple solution available. There seems to be solutions available to generate this effect for boxes but not for text.
Question: Any idea how to generate a “neon glow” for normal text on the title frame with tikz and friends?

Disclaimer: Crosspost to https://tex.stackexchange.com/questions/587372.

\documentclass{beamer}

\usepackage{tikz}
% Potentially Useful Libraries
\usetikzlibrary{
    shadows.blur, % "pgf-blur" package
    }

% Title of Presentation
\title{Presentation Title}

% Definition of Title Frame
\setbeamertemplate{title page}
    {
    \begin{beamercolorbox}[center]{title}
        \usebeamerfont{title}\inserttitle
    \end{beamercolorbox}
    }

% Definition of Font Color of Title (Used in "\setbeamertemplate{title page}")    
\setbeamercolor{title}{fg=pink} 

% Related
% https://tex.stackexchange.com/questions/315989
% https://tex.stackexchange.com/questions/401032
% https://tex.stackexchange.com/questions/493401
% https://tex.stackexchange.com/questions/315989
% https://tex.stackexchange.com/questions/446841

\begin{document}

% Title Frame
\setbeamercolor{background canvas}{bg=black}
\begin{frame}
\maketitle
\end{frame}
\setbeamercolor{background canvas}{bg=}

% Normal Frame
\begin{frame}{Frame Title}
Text
\end{frame}

\end{document}

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\documentclass{beamer}​\usepackage{tikz}% Potentially Useful Libraries\usetikzlibrary{    shadows.blur, % "pgf-blur" package    }​% Title of Presentation\title{Presentation Title}​% Definition of Title Frame\setbeamertemplate{title page}    {    \begin{beamercolorbox}[center]{title}        \usebeamerfont{title}\inserttitle    \end{beamercolorbox}    }​% Definition of Font Color of Title (Used in "\setbeamertemplate{title page}")    \setbeamercolor{title}{fg=pink} ​% Related% https://tex.stackexchange.com/questions/315989% https://tex.stackexchange.com/questions/401032% https://tex.stackexchange.com/questions/493401% https://tex.stackexchange.com/questions/315989% https://tex.stackexchange.com/questions/446841​\begin{document}​% Title Frame\setbeamercolor{background canvas}{bg=black}\begin{frame}\maketitle\end{frame}\setbeamercolor{background canvas}{bg=}​% Normal Frame\begin{frame}{Frame Title}Text\end{frame}​\end{document}
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Top Answer

4 years ago user 3.14159

Maybe this goes in the right direction.

\documentclass{article}
\usepackage{environ}
\usepackage{contour}
\usepackage{tikz}
\usetikzlibrary{fadings}
\NewEnviron{NeonTikZ}[2][]{\begin{tikzfadingfrompicture}[name=temp]%
\begin{scope}[transparent!0,#1] 
\BODY
\end{scope}
\end{tikzfadingfrompicture}%
\tikz[#1]{\begin{scope}[local bounding box=X,opacity=0]%
\BODY
\end{scope}
\shade[inner color=red,outer color=red!50!black,
	path fading=temp,fit fading=false]
 (X.south west) rectangle (X.north east);
 }%
}

\newsavebox\WhatEver
\begin{document}
\savebox\WhatEver{\begin{NeonTikZ}[baseline={(txt.base)}]{GoldLeaf.jpg}
\node[align=center,font=\bfseries\Large] (txt) 
{\contourlength{0.6pt}\contour{white}{\textcolor{black}{Some Text}}};
\end{NeonTikZ}}

\begin{tikzpicture}
 \fill (0,0) rectangle (6,3) node[midway,scale=2]{\usebox\WhatEver};
\end{tikzpicture}
\end{document}

xxxxxxxxxx
 
\documentclass{article}\usepackage{environ}\usepackage{contour}\usepackage{tikz}\usetikzlibrary{fadings}\NewEnviron{NeonTikZ}[2][]{\begin{tikzfadingfrompicture}[name=temp]%\begin{scope}[transparent!0,#1] \BODY\end{scope}\end{tikzfadingfrompicture}%\tikz[#1]{\begin{scope}[local bounding box=X,opacity=0]%\BODY\end{scope}\shade[inner color=red,outer color=red!50!black,    path fading=temp,fit fading=false] (X.south west) rectangle (X.north east); }%}​\newsavebox\WhatEver\begin{document}\savebox\WhatEver{\begin{NeonTikZ}[baseline={(txt.base)}]{GoldLeaf.jpg}\node[align=center,font=\bfseries\Large] (txt) {\contourlength{0.6pt}\contour{white}{\textcolor{black}{Some Text}}};\end{NeonTikZ}}​\begin{tikzpicture} \fill (0,0) rectangle (6,3) node[midway,scale=2]{\usebox\WhatEver};\end{tikzpicture}\end{document}
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1 Answer