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+%% $Id: pst-turtle-doc.tex 1093 2019-10-02 11:28:36Z herbert $
+\documentclass[fontsize=11pt,english,BCOR=10mm,DIV=12,bibliography=totoc,parskip=false,
+ headings=small, headinclude=false,footinclude=false,oneside]{pst-doc}
+\usepackage{pst-turtle}
+\let\pstTurtleFV\fileversion
+\renewcommand\bgImage{}
+
+%\usepackage[style=dtk]{biblatex}
+\addbibresource{pst-turtle-doc.bib}
+
+\begin{document}
+
+\title{\texttt{pst-turtle}}
+\subtitle{Turtle graphics; v.\pstTurtleFV}
+\author{Herbert Vo\ss}
+\docauthor{}
+\date{\today}
+\maketitle
+
+\tableofcontents
+
+\clearpage
+
+\begin{abstract}
+\noindent
+\LPack{pst-turtle} loads by default the following packages: \LPack{pstricks},
+and \LPack{pst-xkey}.
+All should be already part of your local \TeX\ installation. If not, or in case
+of having older versions, go to \url{http://www.CTAN.org/} and load the newest version.
+
+\vfill\noindent
+Thanks to \\
+
+\end{abstract}
+
+
+\section{Usage}
+
+\begin{BDef}
+\Lcs{psTurtle}\OptArgs\Largr{$x_0,y_0$}\Largb{Turtle code}
+\end{BDef}
+
+The turle commands must be in PostScript notation, where you can use the
+short or long version of the commands:
+
+\begin{verbatim}
+/bk { back } bind def
+/fd { forward } bind def
+/lt { left } bind def
+/pd { pendown } bind def
+/pu { penup } bind def
+/rt { right } bind def
+\end{verbatim}
+
+The default unit is cm.
+
+\bigskip
+\begin{LTXexample}[width=4cm,pos=l]
+\begin{pspicture}[showgrid](3,3)
+\psTurtle[linewidth=2pt,arrows=->](0,0){ 3 forward }
+\end{pspicture}
+\end{LTXexample}
+
+\bigskip
+\begin{LTXexample}[width=4cm,pos=l]
+\begin{pspicture}[showgrid](3,3)
+\psTurtle[linewidth=2pt,arrows=->](0,0){
+ 3 fd
+ 90 left 3 fd }
+\end{pspicture}
+\end{LTXexample}
+
+\bigskip
+\begin{LTXexample}[width=4cm,pos=l]
+\begin{pspicture}[showgrid](3,3)
+\psTurtle[linewidth=2pt,arrows=->](0,0){
+ 3 fd
+ 90 left 3 fd
+ 90 left 3 fd
+ 135 left 18 sqrt fd}
+\end{pspicture}
+\end{LTXexample}
+
+
+\bigskip
+\begin{LTXexample}[width=5cm,pos=l]
+\begin{pspicture}[showgrid](4,4)
+\psTurtle[linewidth=2pt](0.8,0){
+ 5 { 2.5 fd 72 left } repeat
+}
+\end{pspicture}
+\end{LTXexample}
+
+\bigskip
+\begin{LTXexample}[width=5cm,pos=l]
+\begin{pspicture}[showgrid](4,4)
+\psTurtle[linewidth=2pt](2,1){
+ 5 { 72 left 1 fd 72 right 1 fd 72 left} repeat
+}
+\end{pspicture}
+\end{LTXexample}
+
+\bigskip
+\begin{LTXexample}[width=5cm,pos=l]
+\begin{pspicture}[showgrid](4,4)
+\psTurtle[linewidth=2pt](2,0){
+ /Angle { 360 7 div } bind def
+ 7 { Angle left 1 fd Angle right 1 fd Angle left} repeat
+}
+\end{pspicture}
+\end{LTXexample}
+
+\bigskip
+\begin{LTXexample}[width=5cm,pos=l]
+\begin{pspicture}[showgrid](4,4)
+\psTurtle[linewidth=2pt](2,2){
+ /Angle { 360 7 div } bind def
+ 7 { Angle left 1 fd Angle 3 mul right 1 fd Angle left} repeat
+}
+\end{pspicture}
+\end{LTXexample}
+
+
+\bigskip
+\begin{LTXexample}[width=5cm,pos=l]
+\begin{pspicture}[showgrid](4,4)
+\psTurtle[linewidth=2pt](2,1){
+ /Angle 40 def
+ 75 { 0.25 fd Angle left /Angle Angle 0.5 sub def } repeat
+}
+\end{pspicture}
+\end{LTXexample}
+
+\bigskip
+\begin{LTXexample}[width=5cm,pos=l]
+\begin{pspicture}[showgrid](4,4)
+\psTurtle[linewidth=2pt](0,3.5){
+ 5 { 3 fd 144 right } repeat
+}
+\end{pspicture}
+\end{LTXexample}
+
+
+\bigskip
+\begin{LTXexample}[width=6cm,pos=l]
+\begin{pspicture}[showgrid](5,5)
+\psTurtle[linewidth=0.2pt](1,1.75){
+ 75 { 3.5 fd 123 left } repeat
+}
+\end{pspicture}
+\end{LTXexample}
+
+
+\bigskip
+\begin{LTXexample}[width=11cm,pos=l]
+\begin{pspicture}[showgrid](10,10)
+\psTurtle[linewidth=0.5pt](5,5){
+ /L 1 def
+ 150 { L fd 120 left L fd 120 left L fd /L L 0.03 add def 1.25 rotate } repeat
+}
+\end{pspicture}
+\end{LTXexample}
+
+
+
+
+\iffalse
+\def\a{3 }
+\begin{pspicture}[showgrid](12,6)
+\psset{linecolor=red,linewidth=1.5pt,unit=1cm}
+\psTurtle(0,0){
+ 90 left \a 1.5 mul fd 159 rt \a fd 120 lt \a fd 120 lt \a fd
+ pu \a bk pd -125 rt \a fd 90 lt \a fd 90 lt \a fd 90 lt \a fd
+ pu 90 lt \a fd 90 lt \a fd pd
+ -37 lt \a fd 4 { 72 lt \a fd } repeat
+ pu 2 { 72 lt \a fd } repeat pd
+ -152 lt \a fd
+}
+%\psdot[dotscale=3](! Turtle8)
+\end{pspicture}
+\fi
+
+
+
+
+
+%\clearpage
+%\section{List of all optional arguments for \texttt{pst-turtle}}
+%\xkvview{family=pst-turtle,columns={key,type,default}}
+
+\bgroup
+\RaggedRight
+\nocite{*}
+%\bibliographystyle{plain}
+\printbibliography{pst-turtle-doc}
+\egroup
+
+\printindex
+
+\end{document}