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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Start of pgf-pie.sty
%
% Some LaTeX macros for pie chart by using PGF/Tikz package.
% Home page of project: http://pgf-pie.googlecode.com/
% Author: Xu Yuan <xuyuan.cn@gmail.com>
%
\NeedsTeXFormat{LaTeX2e}[1999/12/01]
\ProvidesPackage{pgf-pie}[2011/10/01 v0.1 Some LaTeX macros for pie
chart by using PGF/Tikz package.]
\RequirePackage{tikz}
% args:
% #1: begin angle
% #2: end angle
% #3: inner label
% #4: outer label
% #5: explode
% #6: fill color
% #7: radius
% #8: center
% #9: style
\newcommand{\pgfpie@slice}[9]{
\pgfmathparse{0.5*#1+0.5*#2}
\let\midangle\pgfmathresult
\path (#8) -- ++(\midangle:#5) coordinate(O);
% slice
\draw[fill=#6, #9] (O) -- ++(#1:#7) arc (#1:#2:#7) -- cycle;
% outer label
\path (O) -- ++ (\midangle:#7) node[label=\midangle:#4]{};
% inner label
\pgfmathparse{min((#2-#1-10)/110*(-0.3),0)}
\let\temp\pgfmathresult
\pgfmathparse{(max(\temp,-0.5) + 0.8)*#7}
\let\innerpos\pgfmathresult
\path (O) -- ++(\midangle:\innerpos) node {#3};
}
\newcounter{pgfpie@angleBegin}
\newcounter{pgfpie@angleEnd}
\newcounter{pgfpie@explodeLength}
\newcounter{pgfpie@colorLength}
\def\setexplode#1\pgfeov{\def\explode{#1}}
\pgfkeyslet{/explode/.@cmd}{\setexplode}
\def\setcolor#1\pgfeov{\def\color{#1}}
\pgfkeyslet{/color/.@cmd}{\setcolor}
\def\setradius#1\pgfeov{\def\radius{#1}}
\pgfkeyslet{/radius/.@cmd}{\setradius}
\def\setpos#1\pgfeov{\def\pos{#1}}
\pgfkeyslet{/pos/.@cmd}{\setpos}
\def\setstyle#1\pgfeov{\def\style{#1}}
\pgfkeyslet{/style/.@cmd}{\setstyle}
\newcommand{\pie}[2][]
{
\pgfkeys{
explode=0,
color={blue!60, cyan!60, yellow!60, orange!60, red!60},
radius=3,
pos={0,0},
style={thick}
}
\pgfkeys{#1}
\def\explodearray{{\explode}}
\setcounter{pgfpie@explodeLength}{0}
\foreach \e in \explode { \addtocounter{pgfpie@explodeLength}{1} }
\setcounter{pgfpie@colorLength}{0}
\foreach \c in \color { \addtocounter{pgfpie@colorLength}{1} }
\setcounter{pgfpie@angleEnd}{0}
\foreach \p/\t [count=\i from 0] in {#2}
{
\setcounter{pgfpie@angleBegin}{\value{pgfpie@angleEnd}}
\addtocounter{pgfpie@angleEnd}{\p}
% find explode
\pgfmathparse{\explodearray[int(mod(\i,\value{pgfpie@explodeLength}))]}
\let\e\pgfmathresult
% find color
\pgfmathparse{int(mod(\i,\value{pgfpie@colorLength}))}
\let\ci\pgfmathresult
\foreach \c [count=\j from 0] in \color {
\ifnum \j=\ci
\xdef\thecolor{\c}
\breakforeach
\fi
}
\pgfpie@slice{\thepgfpie@angleBegin/100*360}
{\thepgfpie@angleEnd/100*360}
{\p\%}
{\t}
{\e}
{\thecolor}
{\radius}
{\pos}
{\style}
}
}
%%% End of pgf-pie.sty
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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