The TikZ and PGF Packages
Manual for version 3.1.9a
Part V Libraries
by Till Tantau
In this part the library packages are documented. They provide additional predefined graphic objects like new arrow heads or new plot marks, but sometimes also extensions of the basic pgf or TikZ system. The libraries are not loaded by default since many users will not need them.
\usetikzlibrary {arrows,trees}
\tikzset{
ld/.style={level distance=#1},lw/.style={line width=#1},
level 1/.style={ld=4.5mm, trunk, lw=1ex ,sibling angle=60},
level 2/.style={ld=3.5mm, trunk!80!leaf a,lw=.8ex,sibling angle=56},
level 3/.style={ld=2.75mm,trunk!60!leaf a,lw=.6ex,sibling angle=52},
level 4/.style={ld=2mm, trunk!40!leaf a,lw=.4ex,sibling angle=48},
level 5/.style={ld=1mm, trunk!20!leaf a,lw=.3ex,sibling angle=44},
level 6/.style={ld=1.75mm,leaf a, lw=.2ex,sibling angle=40},
}
\pgfarrowsdeclare{leaf}{leaf}
{\pgfarrowsleftextend{-2pt} \pgfarrowsrightextend{1pt}}
{
\pgfpathmoveto{\pgfpoint{-2pt}{0pt}}
\pgfpatharc{150}{30}{1.8pt}
\pgfpatharc{-30}{-150}{1.8pt}
\pgfusepathqfill
}
\newcommand{\logo}[5]
{
\colorlet{border}{#1}
\colorlet{trunk}{#2}
\colorlet{leaf
a}{#3}
\colorlet{leaf
b}{#4}
\begin{tikzpicture}
\scriptsize\scshape
\draw[border,line width=1ex,yshift=.3cm,
yscale=1.45,xscale=1.05,looseness=1.42]
(1,0) to
[out=90, in=0] (0,1) to
[out=180,in=90] (-1,0)
to
[out=-90,in=-180] (0,-1) to
[out=0, in=-90] (1,0) --
cycle;
\coordinate (root) [grow cyclic,rotate=90]
child
{
child
[line cap=round] foreach
\a in
{0,1} {
child
foreach
\b in
{0,1} {
child
foreach
\c in
{0,1} {
child
foreach
\d in
{0,1} {
child
foreach
\leafcolor in
{leaf
a,leaf
b}
{ edge
from
parent
[color=\leafcolor,-#5] }
} } }
} edge
from
parent
[shorten >=-1pt,serif cm-,line cap=butt]
};
\node [align=center,below] at
(0pt,-.5ex)
{ \textcolor{border}{T}heoretical
\\ \textcolor{border}{C}omputer
\\
\textcolor{border}{S}cience
};
\end{tikzpicture}
}
\begin{minipage}{3cm}
\logo{green!80!black}{green!25!black}{green}{green!80}{leaf}\\
\logo{green!50!black}{black}{green!80!black}{red!80!green}{leaf}\\
\logo{red!75!black}{red!25!black}{red!75!black}{orange}{leaf}\\
\logo{black!50}{black}{black!50}{black!25}{}
\end{minipage}