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%% Harvey Balls for LaTeX
%% Copyright (C) 2013 Sascha Roth, Technical University Munich
%%
%% 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/>.
\NeedsTeXFormat{LaTeX2e}[2001/06/01]
\ProvidesPackage{harveyballs}[2013/10/22 Harvey Balls for LaTeX by Sascha Roth, Technical University Munich, sascha.roth@mytum.de]
\RequirePackage{tikz}
%
\def\@harveyBallsSize{0.85ex}%size of the harvey balls
\def\@harveyBallsLineWidth{0.2pt}%line width of the harvey balls
%
\DeclareRobustCommand{\harveyBallNone}[1][\@harveyBallsSize]{%
\begin{tikzpicture}%
\draw[draw=black,line width=\@harveyBallsLineWidth] (0,0) circle (#1);%
\end{tikzpicture}%
}%
\DeclareRobustCommand{\harveyBallQuarter}[1][\@harveyBallsSize]{%
\begin{tikzpicture}%
\draw[line width=\@harveyBallsLineWidth](0,0) circle (#1);%
\fill[fill=black] (0,0) -- (#1,0mm) arc (0:90:#1) -- cycle;%
\end{tikzpicture}%
}%
\DeclareRobustCommand{\harveyBallHalf}[1][\@harveyBallsSize]{%
\begin{tikzpicture}%
\draw[line width=\@harveyBallsLineWidth](0,0) circle (#1);%
\fill[fill=black] (0,0) -- (#1,0mm) arc (0:90:#1) -- cycle;%
\fill[fill=black] (0,0) -- (#1,0mm) arc (0:-90:#1) -- cycle;%
\end{tikzpicture}%
}%
\DeclareRobustCommand{\harveyBallThreeQuarter}[1][\@harveyBallsSize]{%
\begin{tikzpicture}%
\draw[line width=\@harveyBallsLineWidth](0,0) circle (#1);%
\fill[fill=black] (0,0) -- (#1,0mm) arc (0:90:#1) -- cycle;%
\fill[fill=black] (0,0) -- (#1,0mm) arc (0:-180:#1) -- cycle;%
\end{tikzpicture}%
}%
\DeclareRobustCommand{\harveyBallFull}[1][\@harveyBallsSize]{%
\begin{tikzpicture}%
\filldraw[fill=black,draw=black,line width=\@harveyBallsLineWidth] (0,0) circle (#1);%
\end{tikzpicture}%
}%
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