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example.tex
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example.tex
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%%
%% Copyright 2011, Robert Schwarz <schwarz@zib.de>
%%
%% PGF Gas
%%
%% This program is free software: you can redistribute it and/or modify
%% it under the terms of the GNU General Public License as published by
%% the Free Software Foundation, either version 3 of the License, or
%% (at your option) any later version.
%%
%% This program is distributed in the hope that it will be useful,
%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
%% GNU General Public License for more details.
%%
%% You should have received a copy of the GNU General Public License
%% along with this program. If not, see <http:%%www.gnu.org/licenses/>.
%%
\documentclass[a4paper]{article}
\usepackage{listings}
\usepackage{tikz}
\usetikzlibrary{circuits}
\usepackage{pgfgas}
\begin{document}
\title{PGF Gas\\Using TikZ circuits to draw gas networks.}
\author{Robert Schwarz}
\date{\today}
\maketitle
This package defines four new symbols for common elements in natural
gas networks:
\begin{itemize}
\item[pi] Pipes
\item[cs] Compressors
\item[va] Valves
\item[cv] Control valves
\item[re] Resistors
\end{itemize}
Requires pgf with circuits library, e.g., version 2.10.
\begin{figure}
\centering
\begin{lstlisting}
\begin{tikzpicture}[circuit]
\draw (0,4) to [pi] (2,4);
\draw (0,3) to [cs] (2,3);
\draw (0,2) to [va] (2,2);
\draw (0,1) to [cv] (2,1);
\draw (0,0) to [re] (2,0);
\end{tikzpicture}
\end{lstlisting}
\begin{tikzpicture}[circuit]
\draw (0,4) to [pi] (2,4);
\draw (0,3) to [cs] (2,3);
\draw (0,2) to [va] (2,2);
\draw (0,1) to [cv] (2,1);
\draw (0,0) to [re] (2,0);
\end{tikzpicture}
\caption{All the standard elements are available.}
\end{figure}
\begin{figure}
\centering
\begin{lstlisting}
\begin{tikzpicture}[circuit, scale=1.5, circuit symbol unit=10pt]
\draw (0,0) to [cv={fill=yellow}] (5,0);
\draw (0,0) to [cs={red}] (0,2);
\draw (0,2) to [va={fill=green}] (3,2);
\draw (5,0) to [re] (3,2);
\draw (0,0) to [cs={fill=red}] (3,2);
\end{tikzpicture}
\end{lstlisting}
\begin{tikzpicture}[circuit, scale=1.5, circuit symbol unit=10pt]
\draw (0,0) to [cv={fill=yellow}] (5,0);
\draw (0,0) to [cs={red}] (0,2);
\draw (0,2) to [va={fill=green}] (3,2);
\draw (5,0) to [re] (3,2);
\draw (0,0) to [cs={fill=red}] (3,2);
\end{tikzpicture}
\caption{They can also be colored, filled, scaled and are automatically placed and rotated.}
\end{figure}
\end{document}