new pstricks package pst-node 1.10 (11feb10)

git-svn-id: svn://tug.org/texlive/trunk@16970 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 1745 insertions, 0 deletions

diff --git a/Master/texmf-dist/tex/generic/pst-node/pst-node.tex b/Master/texmf-dist/tex/generic/pst-node/pst-node.tex
new file mode 100644
index 00000000000..71a2ee98e08
--- /dev/null
+++ b/Master/texmf-dist/tex/generic/pst-node/pst-node.tex
@@ -0,0 +1,1745 @@
+% $Id: pst-node.tex 263 2010-01-22 11:13:25Z herbert $
+%% BEGIN pst-node.tex
+%%
+%% Nodes with PSTricks.
+%% See the betadoc documentation for usage. 
+%% This uses the header file `pst-node.pro'.
+%%
+%% COPYRIGHT 1993, 1994, 1999 by Timothy Van Zandt, tvz@nwu.edu.
+%% COPYRIGHT 2009/10 by Herbert Voss, hvoss tug.org.
+%%
+%% This program can be redistributed and/or modified under the terms
+%% of the LaTeX Project Public License Distributed from CTAN
+%% archives in directory macros/latex/base/lppl.txt.
+%%
+%
+\csname PSTnodesLoaded\endcsname
+\let\PSTnodesLoaded\endinput
+\ifx\PSTricksLoaded\endinput\else\input pstricks.tex \fi\relax
+\ifx\PSTXKeyLoaded\endinput\else \input pst-xkey \fi
+%
+\def\fileversion{1.10}
+\def\filedate{2010/01/22}
+\message{ v\fileversion, \filedate}
+%
+\edef\TheAtCode{\the\catcode`\@}
+\catcode`\@=11
+%
+\pstheader{pst-node.pro}
+\pst@addfams{pst-node}
+%
+\SpecialCoor
+%
+%%%%%%%%%% compytibility stuff
+\define@boolkey[psset]{pst-node}[Pst@]{trueAngle}[true]{}
+\psset[pst-node]{trueAngle=false}
+%%%%%%%%%% compytibility stuff
+%
+\def\pst@nodedict{tx@NodeDict begin }
+\def\pst@zapspace#1 #2{%
+#1%
+\ifx#2\@empty\else\expandafter\pst@zapspace\fi
+#2}
+%
+\def\pst@getnode#1#2{\pst@expandafter\pst@@getnode{#1},,\@nil#2}
+\def\pst@@getnode#1,#2,#3\@nil#4{%
+  \ifx\@empty#3\@empty
+    \edef#4{/N@\pst@zapspace#1 \@empty\space}%
+  \else
+    \pst@cntg=#1\relax
+    \pst@cnth=#2\relax
+    \edef#4{/N@M-\ifnum\psmatrixcnt=\z@ 1\else\the\psmatrixcnt\fi
+    -\the\pst@cntg-\the\pst@cnth\space}%
+  \fi}
+%
+\def\tx@NewNode{NewNode }
+\def\pst@newnode#1#2#3#4{%
+% DG/SR modification begin - Nov.  9, 2000 - Patch 11
+\pst@killglue
+% DG/SR modification end
+\leavevmode
+\pst@getnode{#1}\pst@thenode
+\pst@Verb{%
+  \pst@nodedict
+  {#3}
+  \ifx\psk@name\relax false \else \psk@name true \fi
+  \pst@thenode
+  #2
+  {#4}
+  \tx@NewNode
+  end }%
+%
+\global\let\psk@name\relax
+\pstree@nodehook
+\global\let\pstree@nodehook\relax}
+\let\pstree@nodehook\relax
+\newif\ifnodealign
+\define@boolkey[psset]{pst-node}[true]{nodealign}{}
+\psset[pst-node]{nodealign=false}
+
+\def\pst@nodealign{%
+\pst@dimg=\ht\pst@hbox
+\advance\pst@dimg-\dp\pst@hbox
+\divide\pst@dimg2
+\lower\pst@dimg}
+%
+\def\tx@InitPnode{InitPnode }
+\def\pnode{\@ifnextchar({\pnode@}{\pnode@(0,0)}}
+\def\pnode@(#1)#2{%
+  \pst@@getcoor{#1}%
+  \pst@newnode{#2}{10}{\pst@coor}{\tx@InitPnode}%
+  \ignorespaces}
+%
+\def\tx@InitCnode{InitCnode }
+\def\cnode{\pst@object{cnode}}
+\def\cnode@i{\@ifnextchar({\cnode@ii}{\cnode@ii(0,0)}}
+\def\cnode@ii(#1)#2#3{%
+  \leavevmode
+  \hbox{%
+    \use@par
+    \pst@@getcoor{#1}%
+    \pssetlength\pst@dimc{#2}%
+    \pst@dimg=\psk@dimen\pslinewidth
+    \advance\pst@dimc-\pst@dimg
+    \advance\pst@dimc.5\pslinewidth
+    \ifnodealign
+      \kern\pst@dimc
+      \vrule width\z@ height \pst@dimc depth \pst@dimc
+    \fi
+    \pscircle@do(#1){#2}%
+    \pst@newnode{#3}{11}{\pst@coor \pst@number\pst@dimc}{\tx@InitCnode}%
+%%    % DG/SR modification begin - Jul. 30, 1997 - Patch 2
+%%    %\ifnodealign \kern\pst@dimc\egroup \fi}%
+    \ifnodealign\kern\pst@dimc\fi%
+%%    % DG/SR modification end
+  }%
+  \ignorespaces}
+%
+\def\Cnode{\pst@object{Cnode}}
+\def\Cnode@i{\@ifnextchar({\Cnode@ii}{\Cnode@ii(0,0)}}
+\def\Cnode@ii(#1)#2{\cnode@ii(#1){\psk@radius}{#2}}%
+%
+\def\cnodeput{\pst@object{cnodeput}}
+\def\cnodeput@i{\@ifnextchar({\cnodeput@iii}{\cnodeput@ii}}
+\def\cnodeput@ii#1{%
+  \addto@par{rot={#1}}%
+  \@ifnextchar({\cnodeput@iii}{\cnodeput@iii(\z@,\z@)}}
+\def\cnodeput@iii(#1)#2{%
+  \pst@killglue
+  \@fixedradiusfalse
+  \def\pst@nodehook{\cnodeput@iv{#2}}%
+  \pst@makebox{\cput@v{#1}}}
+\def\cnodeput@iv#1{%
+  \pst@newnode{#1}{11}{\pscirclebox@iv \pst@number\pslinewidth add}{\tx@InitCnode}%
+  \global\let\pst@nodehook\relax}
+%  
+\def\Cnodeput{\pst@object{Cnodeput}}
+\def\Cnodeput@i{\@ifnextchar({\Cnodeput@iii}{\Cnodeput@ii}}
+\def\Cnodeput@ii#1{%
+\addto@par{rot={#1}}%
+\@ifnextchar({\Cnodeput@iii}{\Cnodeput@iii(\z@,\z@)}}
+\def\Cnodeput@iii(#1)#2{%
+\pst@killglue
+\@fixedradiustrue
+\def\pst@nodehook{\Cnodeput@iv{#2}}%
+\pst@makebox{\cput@iv{#1}}}
+\def\Cnodeput@iv#1{%
+\pst@newnode{#1}{11}{%
+\pst@number{\wd\pst@hbox} 2 div \pst@number\pst@dima % x y
+\pst@number\pst@dimb \pst@number\pslinewidth \psk@dimen .5 sub mul sub }% r
+{\tx@InitCnode}%
+\global\let\pst@nodehook\relax}
+\def\circlenode{\pst@object{circlenode}}
+\def\circlenode@i#1{\pst@makebox{\circlenode@ii{#1}}}
+\def\circlenode@ii#1{%
+  \begingroup
+  \pst@useboxpar
+  \setbox\pst@hbox=\hbox{%
+    \cnodeput@iv{#1}%
+    \pscirclebox@iii
+    \box\pst@hbox}%
+  \ifnodealign \psboxseptrue \fi
+  \ifpsboxsep \pscirclebox@sep \fi
+  \leavevmode
+  \ifnodealign\pst@nodealign\fi
+  \box\pst@hbox
+  \endgroup}
+\def\Circlenode{\pst@object{Circlenode}}
+\def\Circlenode@i#1{\pst@makebox{\Circlenode@ii{#1}}}
+\def\Circlenode@ii#1{%
+\begingroup
+\pst@useboxpar
+\pst@dima=\ht\pst@hbox
+\advance\pst@dima\dp\pst@hbox
+\divide\pst@dima\tw@
+\pssetlength\pst@dimb\psk@radius
+\setbox\pst@hbox=\hbox{%
+\Cnodeput@iv{#1}%
+\pscircle(.5\wd\pst@hbox,\pst@dima){\pst@dimb}%
+\box\pst@hbox}%
+\ifnodealign \psboxseptrue \fi
+\ifpsboxsep \psCirclebox@sep \fi
+\leavevmode
+\ifnodealign\pst@nodealign\fi
+\box\pst@hbox
+\endgroup}
+\def\tx@GetRnodePos{GetRnodePos }
+\def\tx@InitRnode{InitRnode }
+\def\rnode{\@ifnextchar[{\rnode@i}{\def\pst@par{}\rnode@ii}}
+\def\rnode@i[#1]{\def\pst@par{ref=#1}\rnode@ii}
+\def\rnode@ii#1{\pst@makebox{\rnode@iii\rnode@iv{#1}}}
+\def\rnode@iii#1#2{%
+% DG modification begin - Jan. 1997
+\leavevmode
+% DG modification end
+\begingroup
+% DG/SR modification begin - Apr. 28, 1998 - Patch 6
+\pst@useboxpar
+% DG/SR modification end
+#1%
+\if@star\pst@starbox\fi
+\ifnodealign\lower\pst@dimb\fi
+\hbox{%
+\pst@newnode{#2}{16}{%
+\pst@number{\ht\pst@hbox}%
+\pst@number{\dp\pst@hbox}%
+\pst@number{\wd\pst@hbox}%
+\pst@number\pst@dima
+\pst@number\pst@dimb}%
+{\tx@InitRnode}%
+\box\pst@hbox}%
+\endgroup}
+\def\rnode@iv{%
+\pst@dima=\psk@xref\wd\pst@hbox
+\ifx\psk@yref\relax
+\pst@dimb=\z@
+\else
+\pst@dimb=\ht\pst@hbox
+\advance\pst@dimb\dp\pst@hbox
+\pst@dimb=\psk@yref\pst@dimb
+\advance\pst@dimb-\dp\pst@hbox
+\fi}
+\define@key[psset]{pst-node}{href}{\pst@checknum{#1}\psk@href}
+\psset[pst-node]{href=0}
+\define@key[psset]{pst-node}{vref}{\def\psk@vref{#1}}
+\psset[pst-node]{vref=0.7ex}
+\def\Rnode{\pst@object{Rnode}}
+\def\Rnode@i#1{\pst@makebox{\rnode@iii\Rnode@ii{#1}}}
+\def\Rnode@ii{%
+% DG modification begin - Jan. 1997
+%   - \begingroup removed  as it seems to doesn't work any more
+%   - \Rnode doesn't process the optional parameter changes
+%\begingroup
+\use@par
+% DG modification end
+\pst@dima=\psk@href\wd\pst@hbox
+\advance\pst@dima\wd\pst@hbox
+\divide\pst@dima 2
+\pssetlength\pst@dimb{\psk@vref}}
+\def\tx@DiaNodePos{DiaNodePos }
+\def\dianode{\pst@object{dianode}}
+\def\dianode@i#1{\pst@makebox{\dianode@ii{#1}}}
+\def\dianode@ii#1{%
+\begingroup
+\pst@useboxpar
+\psdiabox@iii
+\setbox\pst@hbox=\hbox{%
+\pst@newnode{#1}{14}{}{%
+/X \pst@number\pst@dima def
+/Y \pst@number\pst@dimb def
+/w \pst@number\pst@dimc 2 mul def
+/h \pst@number\pst@dimd 2 mul def
+/NodePos { \tx@DiaNodePos } def}%
+\box\pst@hbox}%
+\ifnodealign\psboxseptrue\fi
+\ifpsboxsep\psdiabox@sep\fi
+% DG/SR modification begin - Sep. 2, 1997 - Patch 3
+\leavevmode
+% DG/SR modification end
+\ifnodealign\lower\pst@dimb\fi
+\box\pst@hbox
+\endgroup}
+\def\tx@TriNodePos{TriNodePos }
+\def\tx@InitTriNode{InitTriNode }
+%
+\def\trinode{\pst@object{trinode}}
+\def\trinode@i#1{\pst@makebox{\trinode@ii{#1}}}
+\def\trinode@ii#1{%
+  \begingroup%
+  \pst@useboxpar%
+  \pstribox@iii
+  \setbox\pst@hbox=\hbox{%
+    \pst@newnode{#1}{14}{}{
+      \pst@number\pst@dimc
+      \pst@number\pst@dimd
+      \ifodd\psk@trimode
+        exch
+        \pst@number\pst@dima
+      \else
+        \pst@number\pst@dimb
+      \fi
+      \psk@trimode
+      \pst@number{\wd\pst@hbox}
+      \pst@number{\ht\pst@hbox}
+      \pst@number{\dp\pst@hbox}
+      \tx@InitTriNode
+    }%
+    \box\pst@hbox%
+  }%
+  \ifnodealign\psboxseptrue\fi
+  \ifpsboxsep\pstribox@sep\fi
+% DG/SR modification begin - Sep. 2, 1997 - Patch 3
+  \leavevmode
+% DG/SR modification end
+  \ifnodealign\lower\pst@tempa\fi
+  \box\pst@hbox%
+  \endgroup}
+%
+\def\tx@OvalNodePos{OvalNodePos }
+\def\ovalnode{\pst@object{ovalnode}}
+\def\ovalnode@i#1{\pst@makebox{\ovalnode@ii{#1}}}
+\def\ovalnode@ii#1{%
+\begingroup
+\pst@useboxpar
+\psovalbox@iii
+\setbox\pst@hbox=\hbox{%
+\pst@newnode{#1}{14}{}{%
+/X \pst@number\pst@dima def
+/Y \pst@number\pst@dimb def
+/w \pst@number\pst@dimc def
+/h \pst@number\pst@dimd def
+/NodePos { \tx@OvalNodePos } def}%
+\unhbox\pst@hbox}%
+\ifnodealign\psboxseptrue\fi
+\ifpsboxsep\psovalbox@sep\fi
+% DG/SR modification begin - Sep. 2, 1997 - Patch 3
+\leavevmode
+% DG/SR modification end
+\ifnodealign\lower\pst@dimb\fi
+\box\pst@hbox
+\endgroup}
+%
+\def\dotnode{\pst@object{dotnode}}
+\def\dotnode@i{\@ifnextchar({\dotnode@ii}{\dotnode@ii(\z@,\z@)}}
+\def\dotnode@ii(#1)#2{%
+  \leavevmode%
+  \hbox{%
+    \use@par%
+    \pst@@getcoor{#1}%
+    \pst@getdotsize%
+    \pstree@nodehook%
+    \ifnodealign%
+      \pst@dima=\pst@dimg%
+      \kern\pst@dima%
+      \vrule width\z@ height \pst@dimh depth \pst@dimh%
+    \fi%
+    \pst@newnode{#2}{14}{}{
+      \pst@coor
+      /Y exch def /X exch def
+      /w \pst@number\pst@dimg def
+      /h \pst@number\pst@dimh def
+      /NodePos { \tx@OvalNodePos } def}%
+    \psdot@ii(#1)%
+    \ifnodealign\kern\pst@dima\fi}%
+  \ignorespaces}
+%
+\define@key[psset]{pst-node}{framesize}{\pst@expandafter\psset@@framesize{#1} \@nil}
+\def\psset@@framesize#1 #2\@nil{%
+  \pssetlength\pst@dimg{#1}%
+  \divide\pst@dimg2
+  \edef\psk@framewidth{\pst@number\pst@dimg}%
+  \ifx\@empty#2\@empty
+    \let\psk@frameheight\psk@framewidth
+  \else
+    \pssetlength\pst@dimg{#2}%
+    \divide\pst@dimg2
+    \edef\psk@frameheight{\pst@number\pst@dimg}%
+  \fi}
+%
+\psset[pst-node]{framesize=10pt}
+%
+\def\fnode{\pst@object{fnode}}
+\def\fnode@i{\@ifnextchar({\fnode@ii}{\fnode@ii(\z@,\z@)}}
+\def\fnode@ii(#1)#2{%
+  \leavevmode
+  \pst@killglue
+  \hbox{%
+    \use@par%
+    \begin@ClosedObj%
+    \ifnodealign
+      \kern\psk@framewidth\p@
+      \vrule width\z@ height \psk@frameheight\p@ depth \psk@frameheight\p@
+      \edef\pst@coor{0 0 }%
+    \else\pst@@getcoor{#1}\fi
+    \pst@newnode{#2}{14}{}{
+      \pst@coor
+      /Y exch def /X exch def
+      /d \psk@dimen .5 sub CLW mul neg def
+      /r \psk@framewidth d add def
+      /l r neg def
+      /u \psk@frameheight d add def
+      /d u neg def
+      /NodePos { \tx@GetRnodePos } def}%
+    \addto@pscode{
+      /x2 \psk@framewidth CLW \psk@dimen mul sub def
+      /y2 \psk@frameheight CLW \psk@dimen mul sub def
+      \pst@coor 2 copy
+      y2 sub /y1 ED
+      x2 sub /x1 exch def
+      y2 add /y2 exch def
+      x2 add /x2 exch def
+      \psk@cornersize
+      1 index 0 eq { pop pop \tx@Rect } { \tx@OvalFrame } ifelse}%
+    \def\pst@linetype{2}%
+    \showpointsfalse%
+    \end@ClosedObj%
+    \ifnodealign\kern\psk@framewidth\p@\fi}% end of \hbox
+  \ignorespaces}
+%
+%
+% This fixes a bug in pst-node, where the XY-direction is wrong
+% the types are changed 1<->2 between X<->Y
+%
+\define@key[psset]{}{XnodesepA}{\pst@getlength{#1}\psk@nodesepA\def\psk@nodeseptypeA{2 }}
+\define@key[psset]{}{XnodesepB}{\pst@getlength{#1}\psk@nodesepB\def\psk@nodeseptypeB{2 }}
+\define@key[psset]{}{Xnodesep}{%
+    \pst@getlength{#1}\psk@nodesepA
+    \let\psk@nodesepB\psk@nodesepA
+    \def\psk@nodeseptypeA{2 }%
+    \def\psk@nodeseptypeB{2 }}
+\define@key[psset]{}{YnodesepA}{\pst@getlength{#1}\psk@nodesepA\def\psk@nodeseptypeA{1 }}
+\define@key[psset]{}{YnodesepB}{\pst@getlength{#1}\psk@nodesepB\def\psk@nodeseptypeB{1 }}
+\define@key[psset]{}{Ynodesep}{%
+    \pst@getlength{#1}\psk@nodesepA
+    \let\psk@nodesepB\psk@nodesepA
+    \def\psk@nodeseptypeA{1 }%
+    \def\psk@nodeseptypeB{1 }}
+%%%% end bugfix %%%%%
+\define@key[psset]{pst-node}{nodesepA}[0pt]{\pst@getlength{#1}\psk@nodesepA \def\psk@nodeseptypeA{0 }}
+\define@key[psset]{pst-node}{nodesepB}[0pt]{\pst@getlength{#1}\psk@nodesepB \def\psk@nodeseptypeB{0 }}
+\define@key[psset]{pst-node}{nodesep}[0pt]{%
+  \pst@getlength{#1}\psk@nodesepA
+  \let\psk@nodesepB\psk@nodesepA
+  \def\psk@nodeseptypeA{0 }%
+  \def\psk@nodeseptypeB{0 }}
+\psset[pst-node]{nodesep=0pt}
+%\define@key[psset]{pst-node}{XnodesepA}[]{\pst@getlength{#1}\psk@nodesepA \def\psk@nodeseptypeA{1 }}
+%\define@key[psset]{pst-node}{XnodesepB}[]{\pst@getlength{#1}\psk@nodesepB \def\psk@nodeseptypeB{1 }}
+%\define@key[psset]{pst-node}{Xnodesep}[]{%
+%  \pst@getlength{#1}\psk@nodesepA
+%  \let\psk@nodesepB\psk@nodesepA
+%  \def\psk@nodeseptypeA{1 }%
+%  \def\psk@nodeseptypeB{1 }}
+%\define@key[psset]{pst-node}{YnodesepA}[]{\pst@getlength{#1}\psk@nodesepA \def\psk@nodeseptypeA{2 }}
+%\define@key[psset]{pst-node}{YnodesepB}[]{\pst@getlength{#1}\psk@nodesepB \def\psk@nodeseptypeB{2 }}
+%\define@key[psset]{pst-node}{Ynodesep}[]{
+%  \pst@getlength{#1}\psk@nodesepA
+%  \let\psk@nodesepB\psk@nodesepA
+%  \def\psk@nodeseptypeA{2 }%
+%  \def\psk@nodeseptypeB{2 }}
+\define@key[psset]{pst-node}{armA}[10pt]{\pst@getlength{#1}\psk@armA \def\psk@armtypeA{0 }}
+\define@key[psset]{pst-node}{armB}[10pt]{\pst@getlength{#1}\psk@armB \def\psk@armtypeB{0 }}
+\define@key[psset]{pst-node}{arm}[10pt]{%
+  \pst@getlength{#1}\psk@armA
+  \let\psk@armB\psk@armA
+  \def\psk@armtypeA{0 }%
+  \def\psk@armtypeB{0 }}
+\psset[pst-node]{arm=10pt}
+\define@key[psset]{pst-node}{XarmA}[]{\pst@getlength{#1}\psk@armA \def\psk@armtypeA{1 }}
+\define@key[psset]{pst-node}{XarmB}[]{\pst@getlength{#1}\psk@armB \def\psk@armtypeB{1 }}
+\define@key[psset]{pst-node}{Xarm}{%
+  \pst@getlength{#1}\psk@armA
+  \let\psk@armB\psk@armA
+  \def\psk@armtypeA{1 }%
+  \def\psk@armtypeB{1 }}
+\define@key[psset]{pst-node}{YarmA}[]{\pst@getlength{#1}\psk@armA \def\psk@armtypeA{2 }}
+\define@key[psset]{pst-node}{YarmB}[]{\pst@getlength{#1}\psk@armB \def\psk@armtypeB{2 }}
+\define@key[psset]{pst-node}{Yarm}[]{%
+  \pst@getlength{#1}\psk@armA
+  \let\psk@armB\psk@armA
+  \def\psk@armtypeA{2 }%
+  \def\psk@armtypeB{2 }}
+\define@key[psset]{pst-node}{offsetA}[0pt]{\pst@getlength{#1}\psk@offsetA}
+\define@key[psset]{pst-node}{offsetB}[0pt]{\pst@getlength{#1}\psk@offsetB}
+\define@key[psset]{pst-node}{offset}[0pt]{\pst@getlength{#1}\psk@offsetA\let\psk@offsetB\psk@offsetA}
+\psset[pst-node]{offset=0pt}
+\define@key[psset]{pst-node}{angleA}[0]{\pst@getangle{#1}\psk@angleA}
+\define@key[psset]{pst-node}{angleB}[0]{\pst@getangle{#1}\psk@angleB}%
+\define@key[psset]{pst-node}{angle}[0pt]{%
+  \pst@getangle{#1}\psk@angleA
+  \let\psk@angleB\psk@angleA}
+\psset[pst-node]{angle=0}
+\define@key[psset]{pst-node}{arcangleA}[8]{\pst@getangle{#1}\psk@arcangleA}
+\define@key[psset]{pst-node}{arcangleB}[8]{\pst@getangle{#1}\psk@arcangleB}%
+\define@key[psset]{pst-node}{arcangle}[8]{%
+  \pst@getangle{#1}\psk@arcangleA
+  \let\psk@arcangleB\psk@arcangleA}
+\psset[pst-node]{arcangle=8}
+\define@key[psset]{pst-node}{ncurvA}[0.67]{\pst@checknum{#1}\psk@ncurvA}
+\define@key[psset]{pst-node}{ncurvB}[0.67]{\pst@checknum{#1}\psk@ncurvB}%
+\define@key[psset]{pst-node}{ncurv}[0.67]{\pst@checknum{#1}\psk@ncurvA\let\psk@ncurvB\psk@ncurvA}
+\psset[pst-node]{ncurv=0.67}
+%
+\def\tx@GetCenter{GetCenter }
+\def\tx@XYPos{XYPos }
+\def\tx@GetEdge{GetEdge }
+\def\tx@AddOffset{AddOffset }
+\def\tx@GetEdgeA{GetEdgeA }
+\def\tx@GetEdgeB{GetEdgeB }
+\def\tx@GetArmA{GetArmA }
+\def\tx@GetArmB{GetArmB }
+%
+\def\check@arrow#1#2{%
+  \check@@arrow#2-\@nil
+  \if@pst\addto@par{arrows=#2}\def\next{#1}%
+  \else\def\next{#1{#2}}\fi
+  \next}
+\def\check@@arrow#1-#2\@nil{%
+\ifx\@nil#2\@nil\@pstfalse\else\@psttrue\fi}
+%
+\def\tx@InitNC{InitNC }
+\def\nc@object#1#2#3#4#5{%
+  \csname begin@#1Obj\endcsname
+  \showpointsfalse
+  \pst@getnode{#2}\pst@tempa
+  \pst@getnode{#3}\pst@tempb
+  \gdef\npos@default{#4 }%
+  \addto@pscode{%
+    /NCLW CLW def
+    \pst@nodedict
+    \psk@offsetA
+    \psk@offsetB neg
+    \psk@nodesepA
+    \psk@nodesepB
+    \psk@nodeseptypeA
+    \psk@nodeseptypeB
+    \pst@tempa
+    \pst@tempb
+    \tx@InitNC { #5 } if
+    end }%
+  \def\use@pscode{%
+    \pst@Verb{gsave \tx@STV newpath \pst@code\space grestore}%
+    \gdef\pst@code{}}%
+  \csname end@#1Obj\endcsname
+  \pst@shortput}
+%
+\def\npos@default{.5 }
+%
+\def\pc@object#1{%
+  \@ifnextchar({\pc@@object#1}{\pst@getarrows{\pc@@object#1}}}
+\def\pc@@object#1(#2)(#3){%
+  \pnode(#2){@@A}\pnode(#3){@@B}%
+  #1{@@A}{@@B}}
+%
+\def\tx@LPutLine{LPutLine }
+\def\tx@LPutLines{LPutLines }
+\def\tx@BezierMidpoint{BezierMidpoint }
+\def\tx@HPosBegin{HPosBegin }
+\def\tx@HPosEnd{HPosEnd }
+\def\tx@HPutLine{HPutLine }
+\def\tx@HPutLines{HPutLines }
+\def\tx@VPosBegin{VPosBegin }
+\def\tx@VPosEnd{VPosEnd }
+\def\tx@VPutLine{VPutLine }
+\def\tx@VPutLines{VPutLines }
+\def\tx@HPutCurve{HPutCurve }
+\def\tx@NCCoor{NCCoor }
+\def\tx@NCLine{NCLine }
+%
+\def\ncline{\pst@object{ncline}}
+\def\ncline@i{\check@arrow{\ncline@ii}}
+\def\ncline@ii#1#2{\nc@object{Open}{#1}{#2}{.5}{\tx@NCLine}}
+%
+\def\pcline{\pst@object{pcline}}
+\def\pcline@i{\pc@object\ncline@ii}
+%
+\def\ncLine{\pst@object{ncLine}}
+\def\ncLine@i{\check@arrow{\ncLine@ii}}
+\def\ncLine@ii#1#2{\nc@object{Open}{#1}{#2}{.5}%
+% DG/SR modification begin - Apr. 14, 1999 - Patch 9
+%{\tx@NCLine /LPutPos { xB xA yB yA \tx@LPutLine } def}}
+{\tx@NCLine /LPutPos { xB yB xA yA \tx@LPutLine } def}}
+% DG/SR modification end
+%
+\def\tx@NCLines{NCLines }
+\def\nclines{\pst@object{nclines}}
+\def\nclines@i{\check@arrow\nclines@ii}
+\def\nclines@ii#1#2{%
+\begingroup
+\use@par
+\def\pst@aftercoors{\nclines@iii{#1}{#2}}%
+\def\pst@coors{}%
+\pst@@getcoors}
+\def\nclines@iii#1#2{%
+\nc@object{Open}{#1}{#2}{.5}{%
+tx@Dict begin \psline@iii pop end
+mark \pst@coors \tx@NCLines}%
+\endgroup
+\ignorespaces}
+\def\tx@NCCurve{NCCurve }
+\def\nccurve{\pst@object{nccurve}}
+\def\nccurve@i{\check@arrow{\nccurve@ii}}
+\def\nccurve@ii#1#2{\nc@object{Open}{#1}{#2}{.5}{%
+  /AngleA \psk@angleA\space def /AngleB \psk@angleB\space def
+  \psk@ncurvB\space \psk@ncurvA\space
+  \tx@NCCurve}}
+\def\pccurve{\pst@object{pccurve}}
+\def\pccurve@i{\pc@object\nccurve@ii}
+%
+\def\ncarc{\pst@object{ncarc}}
+\def\ncarc@i{\check@arrow{\ncarc@ii}}
+\def\ncarc@ii#1#2{\nc@object{Open}{#1}{#2}{.5}{%
+  yB yA sub xB xA sub \tx@Atan dup
+  \psk@arcangleA\space add /AngleA exch def
+  \psk@arcangleB\space sub 180 add /AngleB exch def
+  \psk@ncurvB\space \psk@ncurvA\space
+  \tx@NCCurve}}
+\def\pcarc{\pst@object{pcarc}}
+\def\pcarc@i{\pc@object\ncarc@ii}
+%
+\def\tx@NCAngles{NCAngles }
+%
+%border or center as reference point (hv)
+\define@boolkey[psset]{pst-node}[Pst@]{pcRef}[true]{}
+\psset[pst-node]{pcRef=false}
+%
+\def\ncangles{\pst@object{ncangles}}
+\def\ncangles@i{\check@arrow{\ncangles@ii}}
+\def\ncangles@ii#1#2{%
+  \nc@object{Open}{#1}{#2}{1.5}{\ncangles@iii \tx@NCAngles}}
+\def\ncangles@iii{
+  tx@Dict begin \psline@iii pop end
+  /AngleA \psk@angleA def
+  /AngleB \psk@angleB def
+  /ArmA \psk@armA \ifPst@pcRef 
+    GetEdgeA yA yA1 sub dup mul xA xA1 sub dup mul add sqrt sub \fi def
+  /ArmB \psk@armB def
+  /ArmTypeA \psk@armtypeA def
+  /ArmTypeB \psk@armtypeB def }
+%
+\def\pcangles{\pst@object{pcangles}}
+\def\pcangles@i{\pc@object\ncangles@ii}
+\def\tx@NCAngle{NCAngle }
+\def\ncangle{\pst@object{ncangle}}
+\def\ncangle@i{\check@arrow{\ncangle@ii}}
+\def\ncangle@ii#1#2{%
+\nc@object{Open}{#1}{#2}{1.5}{\ncangles@iii \tx@NCAngle}}
+\def\pcangle{\pst@object{pcangle}}
+\def\pcangle@i{\pc@object\ncangle@ii}
+\def\tx@NCBar{NCBar }
+\def\ncbar{\pst@object{ncbar}}
+\def\ncbar@i{\check@arrow{\ncbar@ii}}
+\def\ncbar@ii#1#2{\nc@object{Open}{#1}{#2}{1.5}{%
+\ncangles@iii /AngleB \psk@angleA def \tx@NCBar}}
+\def\pcbar{\pst@object{pcbar}}
+\def\pcbar@i{\pc@object\ncbar@ii}
+%
+\define@key[psset]{pst-node}{lineAngle}[0]{%
+  \ifdim#1pt=\z@\else\psset{armB=0.5}\fi
+  \def\psk@lineAngle{#1}}%
+\psset[pst-node]{lineAngle=0}%
+%
+\def\tx@NCDiag{NCDiag }
+\def\ncdiag{\pst@object{ncdiag}}
+\def\ncdiag@i{\check@arrow{\ncdiag@ii}}
+\def\ncdiag@ii#1#2{%
+  \nc@object{Open}{#1}{#2}{1.5}{\ncangles@iii \psk@lineAngle\space \tx@NCDiag}}
+%
+\def\pcdiag{\pst@object{pcdiag}}
+\def\pcdiag@i{\pc@object\ncdiag@ii}
+%
+\def\tx@NCDiagg{NCDiagg }
+\def\ncdiagg{\pst@object{ncdiagg}}
+\def\ncdiagg@i{\check@arrow{\ncdiagg@ii}}
+\def\ncdiagg@ii#1#2{%
+  \nc@object{Open}{#1}{#2}{.5}{\ncangles@iii \psk@lineAngle\space \tx@NCDiagg}}
+\def\pcdiagg{\pst@object{pcdiagg}}
+%
+\def\pcdiagg@i{\pc@object\ncdiagg@ii}
+\def\tx@NCLoop{NCLoop }
+\define@key[psset]{pst-node}{loopsize}{\pst@getlength{#1}\psk@loopsize}
+\psset[pst-node]{loopsize=1cm}
+\def\ncloop{\pst@object{ncloop}}
+\def\ncloop@i{\check@arrow{\ncloop@ii}}
+\def\ncloop@ii#1#2{%
+\nc@object{Open}{#1}{#2}{2.5}%
+{\ncangles@iii /loopsize \psk@loopsize def \tx@NCLoop}}
+\def\pcloop{\pst@object{pcloop}}
+\def\pcloop@i{\pc@object\ncloop@ii}
+\def\tx@NCCircle{NCCircle }
+\def\nccircle{\pst@object{nccircle}}
+\def\nccircle@i{\check@arrow{\nccircle@ii}}
+\def\nccircle@ii#1#2{%
+\pssetlength\pst@dima{#2}%
+\nc@object{Open}{#1}{#1}{.5}{%
+/AngleA \psk@angleA def
+/r \pst@number\pst@dima def
+\tx@NCCircle \psarc@v end}}
+\def\tx@NCBox{NCBox }
+\def\ncbox{\pst@object{ncbox}}
+\def\ncbox@i{\check@arrow{\ncbox@ii}}
+\def\ncbox@ii#1#2{%
+\def\pst@linetype{2}%
+\nc@object{Closed}{#1}{#2}{.5}{%
+tx@Dict begin \psline@iii pop end
+\psk@boxheight \psk@boxdepth
+\tx@NCBox}}
+\def\pcbox{\pst@object{pcbox}}
+\def\pcbox@i{\pc@object\ncbox@ii}
+\def\tx@NCArcBox{NCArcBox }
+\define@key[psset]{pst-node}{boxheight}[0.4cm]{\pst@getlength{#1}\psk@boxheight}
+\define@key[psset]{pst-node}{boxdepth}[0.4cm]{\pst@getlength{#1}\psk@boxdepth}
+\define@key[psset]{pst-node}{boxsize}[0.4cm]{%
+  \pst@getlength{#1}\psk@boxheight%  
+  \let\psk@boxdepth\psk@boxheight}
+\psset[pst-node]{boxsize=0.4cm}
+%
+\def\ncarcbox{\pst@object{ncarcbox}}
+\def\ncarcbox@i{\check@arrow{\ncarcbox@ii}}
+\def\ncarcbox@ii#1#2{%
+\def\pst@linetype{1}%
+\nc@object{Closed}{#1}{#2}{.5}{%
+\psk@arcangleA \psk@boxheight \psk@boxdepth \pst@number\pslinearc
+\tx@NCArcBox}}
+\def\pcarcbox{\pst@object{pcarcbox}}
+\def\pcarcbox@i{\pc@object\ncarcbox@ii}
+\def\tx@Tfan{Tfan }
+% Changed according pst-beta.bug December 3, 1993
+% nrot=:<angle> does not work when : is active.
+\begingroup
+\catcode`\:=13
+\gdef\pst@activerot{\def:{\string:}}
+\endgroup
+\define@key[psset]{pst-node}{nrot}[0]{%
+  \begingroup
+  \pst@activerot
+  \pst@expandafter{\@ifnextchar:{\psset@@nrot}{\psset@@rot}}{#1}\@nil
+  \global\let\pst@tempg\psk@rot
+  \endgroup
+  \let\psk@nrot\pst@tempg}
+\def\psset@@nrot:#1\@nil{%
+  \psset@@rot#1\@nil
+  \edef\psk@rot{NAngle \ifx\psk@rot\@empty\else\psk@rot add \fi}}
+\psset[pst-node]{nrot=0}
+%
+\def\tx@LPutCoor{LPutCoor }
+\def\tx@LPut{LPut }
+\define@key[psset]{pst-node}{npos}[{}]{%
+  \def\pst@tempa{#1}%
+  \ifx\pst@tempa\@empty\def\psk@npos{\npos@default}\else\pst@checknum{#1}\psk@npos\fi}
+\psset[pst-node]{npos=}
+%
+\def\ncput{\pst@object{ncput}}
+\def\ncput@i{\pst@killglue\pst@makebox{\ncput@ii}}
+\def\ncput@ii{%
+  \begingroup%
+  \use@par%
+  \if@star\pst@starbox\fi%
+  \pst@makesmall\pst@hbox%
+  \pst@rotate\psk@nrot\pst@hbox%
+  \ncput@iii%
+  \endgroup%
+  \pst@shortput}
+\def\ncput@iii{%
+  \leavevmode%
+  \hbox{%
+    \pst@Verb{
+      \pst@nodedict
+      /t \psk@npos def
+      \tx@LPut
+      end
+      \tx@PutBegin}%
+    \box\pst@hbox%
+    \pst@Verb{\tx@PutEnd}}}
+%
+\def\naput{\pst@object{naput}}
+\def\naput@i{\pst@killglue\pst@makebox{\naput@ii{NAngle 90 add}}}
+\def\naput@ii#1{%
+\begingroup
+\use@par
+\if@star\pst@starbox\fi
+\def\psk@refangle{#1 }%
+\let\psk@rot\psk@nrot
+\uput@vii
+{exch pop add a \tx@PtoC h1 add exch w1 add exch }%
+{tx@Dict /NCLW known { NCLW add } if }%
+\ncput@iii
+\endgroup
+\pst@shortput}
+\def\nbput{\pst@object{nbput}}
+\def\nbput@i{\pst@killglue\pst@makebox{\naput@ii{NAngle 90 sub}}}
+\define@key[psset]{pst-node}{tpos}[0.5]{%
+  \pst@checknum{#1}\psk@tpos
+  \ifdim\psk@tpos \p@<\z@
+    \def\psk@tpos{.5}%
+% DG/SR modification begin - Sep. 23, 1998 - Patch 7
+%\@pstrickserr{Bad `tpos' value: `#1'. Must be 0<tpos<1}\@epha
+    \@pstrickserr{Bad `tpos' value: `#1'. Must be 0<tpos<1}\@ehpa
+% DG/SR modification end
+  \else
+    \ifdim\psk@tpos \p@>\p@
+      \def\psk@tpos{.5}%
+% DG/SR modification begin - Sep. 23, 1998 - Patch 7
+%\@pstrickserr{Bad `tpos' value: `#1'. Must be 0<tpos<1}\@epha
+      \@pstrickserr{Bad `tpos' value: `#1'. Must be 0<tpos<1}\@ehpa%
+% DG/SR modification end
+    \fi%
+  \fi}
+\psset[pst-node]{tpos=0.5}
+%
+\def\nlput{\pst@object{nlput}}
+\def\nlput@i(#1)(#2)#3#4{%
+  \begin@SpecialObj
+  \psLDNode(#1)(#2){#3}{temp@lnput}
+  \pcline[linestyle=none](#1)(temp@lnput)%
+  \ncput[npos=1]{#4}%
+  \end@SpecialObj}
+%
+\def\tvput{\pst@object{tvput}}
+\def\tvput@i{\pst@makebox{\psput@tput{H}{1}}}
+\def\tlput{\pst@object{tlput}}
+\def\tlput@i{\pst@makebox{\psput@tput{H}{true}}}
+\def\trput{\pst@object{trput}}
+\def\trput@i{\pst@makebox{\psput@tput{H}{false}}}
+\def\thput{\pst@object{thput}}
+\def\thput@i{\pst@makebox{\psput@tput{V}{1}}}
+\def\taput{\pst@object{taput}}
+\def\taput@i{\pst@makebox{\psput@tput{V}{true}}}
+\def\tbput{\pst@object{tbput}}
+\def\tbput@i{\pst@makebox{\psput@tput{V}{false}}}
+\def\tx@HPutAdjust{HPutAdjust }
+\def\tx@VPutAdjust{VPutAdjust }
+\def\psput@tput#1#2{%
+  \begingroup
+  \use@par
+  \pst@tputmakesmall
+  \leavevmode
+  \hbox{%
+    \pst@Verb{%
+      \pst@nodedict
+      /t \psk@tpos \pst@tposflip def
+      tx@NodeDict /HPutPos known
+        { #1PutPos }
+        { CP /Y exch def /X exch def /NAngle 0 def /NCLW 0 def }
+      ifelse
+      /Sin NAngle sin def
+      /Cos NAngle cos def
+      /s \pst@number\pslabelsep NCLW add def
+      /l \pst@number\pst@dima def
+      /r \pst@number\pst@dimb def
+      /h \pst@number\pst@dimc def
+      /d \pst@number\pst@dimd def
+% DG/SR modification begin - Sep. 26, 1997 - Patch 4
+%\ifnum1=0#2\else
+      \ifnum1=0#2 \else
+% DG/SR modification end
+        /flag #2 def
+        \csname tx@#1PutAdjust\endcsname
+      \fi
+      \tx@LPutCoor
+      end
+      \tx@PutBegin}%
+    \box\pst@hbox
+    \pst@Verb{\tx@PutEnd}}%
+  \endgroup
+  \pst@shortput}
+%  
+\def\pst@tposflip{}
+\def\pst@tputmakesmall{%
+%
+\pst@dima=\wd\pst@hbox
+\divide\pst@dima 2
+\pst@dimg=\psk@href\pst@dimg
+\pst@dimb\pst@dima
+\advance\pst@dima\pst@dimg % leftsize
+\advance\pst@dimb-\pst@dimg % rightsize
+\pst@dimd=\psk@vref\relax
+\pst@dimc=\ht\pst@hbox
+\advance\pst@dimc-\pst@dimd % height
+\advance\pst@dimd\dp\pst@hbox % depth
+\setbox\pst@hbox=\hbox to\z@{%
+\kern-\pst@dima\vbox to\z@{\vss\box\pst@hbox\vskip-\pst@dimd}\hss}}
+\def\MakeShortNab#1#2{%
+  \def\pst@shortput@nab{%
+    \def\pst@tempg{\next}%
+    \ifx#1\next
+      \let\pst@tempg\naput
+    \else
+      \ifx#2\next
+        \let\pst@tempg\nbput
+      \else
+        \ifx\@sptoken\next
+          \let\pst@tempg\pst@shortput
+        \fi
+      \fi
+    \fi
+    \pst@tempg}}
+\MakeShortNab{^}{_}
+\def\MakeShortTablr#1#2#3#4{%
+  \def\pst@shortput@tablr{%
+    \def\pst@tempg{\next}%
+    \ifx#1\next
+      \let\pst@tempg\taput
+    \else
+      \ifx#2\next
+        \let\pst@tempg\tbput
+      \else
+        \ifx#3\next
+          \let\pst@tempg\tlput
+        \else
+          \ifx#4\next
+            \let\pst@tempg\trput
+          \else
+            \ifx\@sptoken\next
+              \let\pst@tempg\pst@shortput
+            \fi
+          \fi
+        \fi
+      \fi
+    \fi
+    \pst@tempg}}
+\MakeShortTablr{^}{_}{<}{>}
+\def\MakeShortTab#1#2{%
+  \def\pst@shortput@tab{%
+    \def\pst@tempg{\next}%
+    \ifx#1\next
+      \def\pst@tempg{%
+        \@nameuse{%
+          t\ifodd\psk@treemode\ifpstreeflip b\else a\fi
+          \else\ifpstreeflip r\else l\fi\fi put}}%
+    \else
+      \ifx#2\next
+        \def\pst@tempg{%
+          \@nameuse{%
+            t\ifodd\psk@treemode\ifpstreeflip a\else b\fi
+            \else\ifpstreeflip l\else r\fi\fi put}}%
+      \else
+        \ifx\@sptoken\next
+          \let\pst@tempg\pst@shortput
+        \fi
+      \fi
+    \fi
+    \pst@tempg}}
+\MakeShortTab{^}{_}
+\define@key[psset]{pst-node}{shortput}[none]{%
+  \def\pst@tempg{#1}%
+  \ifx\pst@tempg\@none
+    \let\pst@shortput\ignorespaces
+  \else
+    \@ifundefined{pst@shortput@#1}%
+     {\@pstrickserr{Bad short put: `#1'}\@ehpa}%
+     {\edef\pst@shortput{\noexpand\afterassignment\expandafter\noexpand
+      \csname pst@shortput@#1\endcsname\noexpand\let\noexpand\next}}%
+  \fi}
+\psset[pst-node]{shortput=none}
+%
+\def\lput{\def\pst@par{}\pst@ifstar{\@ifnextchar[{\lput@i}{\lput@ii}}}
+\def\lput@i[#1]{\addto@par{ref=#1}\lput@ii}
+\def\lput@ii{\@ifnextchar({\lput@iv}{\lput@iii}}
+\def\lput@iii#1{\addto@par{nrot=#1}\@ifnextchar({\lput@iv}{\ncput@i}}
+\def\lput@iv(#1){\addto@par{npos=#1}\ncput@i}
+\def\mput{\def\pst@par{}\pst@ifstar{\@ifnextchar[{\mput@i}{\ncput@i}}}
+\def\mput@i[#1]{\addto@par{ref=#1}\ncput@i}
+\def\Lput{\def\pst@par{}\pst@ifstar{\@ifnextchar[{\Lput@ii}{\Lput@i}}}
+\def\Lput@i#1{\addto@par{labelsep=#1}\Lput@ii}
+\def\Lput@ii[#1]{\addto@par{ref={#1}}\@ifnextchar({\Lput@iv}{\Lput@iii}}
+\def\Lput@iii#1{\addto@par{nrot={#1}}\@ifnextchar({\Lput@iv}{\Lput@v}}
+\def\Lput@iv(#1){\addto@par{npos=#1}\Lput@v}
+\def\Lput@v{\pst@killglue\pst@makebox{\Lput@vi}}
+\def\Lput@vi{%
+\begingroup
+\use@par
+\if@star\pst@starbox\fi
+\Rput@vi
+\pst@makesmall\pst@hbox
+\pst@rotate\psk@nrot\pst@hbox
+\ncput@iii
+\endgroup
+\pst@shortput}
+\def\Mput{\def\pst@par{}\pst@ifstar{\@ifnextchar[{\Mput@ii}{\Mput@i}}}
+\def\Mput@i#1{\addto@par{labelsep=#1}\Mput@ii}
+\def\Mput@ii[#1]{\addto@par{ref={#1}}\Lput@v}
+\def\aput@#1{\def\pst@par{}\pst@ifstar{\@ifnextchar[{\aput@i#1}{\aput@ii#1}}}
+\def\aput@i#1[#2]{\addto@par{labelsep=#2}\aput@ii#1}
+\def\aput@ii#1{\@ifnextchar({\aput@iv#1}{\aput@iii#1}}
+\def\aput@iii#1#2{\addto@par{nrot=#2}\@ifnextchar({\aput@iv#1}{#1}}
+\def\aput@iv#1(#2){\addto@par{npos=#2}#1}
+\def\aput{\aput@\naput@i}
+\def\bput{\aput@\nbput@i}
+\def\Aput{\def\pst@par{}\pst@ifstar{\@ifnextchar[{\Aput@i}{\naput@i}}}
+\def\Aput@i[#1]{\addto@par{labelsep=#1}\naput@i}
+\def\Bput{\def\pst@par{}\pst@ifstar{\@ifnextchar[{\Bput@i}{\nbput@i}}}
+\def\Bput@i[#1]{\addto@par{labelsep=#1}\nbput@i}
+\def\node@coor#1;#2\@nil{%
+  \pst@getnode{#1}\pst@tempg
+  \edef\pst@coor{%
+    \pst@nodedict
+    tx@NodeDict \pst@tempg known
+    \pslbrace \pst@tempg load \tx@GetCenter \psrbrace
+    \pslbrace 0 0 \psrbrace ifelse
+    end }}
+\def\Node@coor[#1]#2;#3\@nil{%
+\begingroup
+\psset{#1}%
+\@ifnextchar\bgroup{\Node@@@coor}{\Node@@coor}#2\@nil
+\endgroup
+\let\pst@coor\pst@tempg}
+\def\Node@@coor#1\@nil{%
+\pst@getnode{#1}\pst@tempg
+\xdef\pst@tempg{%
+\pst@nodedict
+tx@NodeDict \pst@tempg known
+{ \psk@nodesepA \psk@angleA
+\pst@tempg load \psk@nodeseptypeA \tx@GetEdge
+\psk@offsetA \psk@angleA \tx@AddOffset
+\pst@tempg load \tx@GetCenter
+3 -1 roll add 3 1 roll add exch }
+{ CP }
+ifelse
+end }}%
+\def\Node@@@coor#1{%
+\pst@@getcoor{#1}%
+\def\psk@angleA{%
+\pst@tempg load \tx@GetCenter \pst@coor
+3 -1 roll sub 3 1 roll sub neg \tx@Atan}%
+\Node@@coor}
+%
+\def\nput{\pst@object{nput}}
+\def\nput@i#1#2{\pst@killglue\pst@makebox{\nput@ii{#1}{#2}}}
+\def\nput@ii#1#2{%
+  \begingroup
+  \use@par
+  \psset[pstricks]{refangle=#1}%
+  \let\psk@angleA\psk@refangle
+  \edef\psk@nodesepA{\pst@number\pslabelsep}%
+  \def\psk@nodeseptypeA{0 }%
+  \pslabelsep\z@
+  \uput@vi
+  \Node@@coor#2\@nil
+  \let\pst@coor\pst@tempg
+  \leavevmode
+  \psput@special\pst@hbox
+  \endgroup
+  \ignorespaces}
+%  
+\newcount\psrow
+\newcount\pscol
+\newcount\psmatrixcnt
+\newskip\psrowsep
+\newskip\pscolsep
+%
+\define@key[psset]{pst-node}{colsep}[1.5cm]{\pssetlength\pscolsep{#1}}
+\define@key[psset]{pst-node}{rowsep}[1.5cm]{\pssetlength\psrowsep{#1}}
+\psset[pst-node]{colsep=1.5cm}
+\psset[pst-node]{rowsep=1.5cm}
+\newif\ifpsmatrix
+% DG/SR modification begin - Nov. 27, 1998 - Patch 8
+%\let\mscount\@multicnt
+\ifx\mscount\@undefined\let\mscount\@multicnt\fi
+% DG/SR modification end
+\def\psmatrix{\begingroup{\ifnum0=`}\fi % Don't want to expand any &.
+  \@ifnextchar[{\psmatrix@i}{\ifnum0=`{\fi}{}\psmatrix@ii}}
+\def\psmatrix@i[#1]{%
+  \ifnum0=`{\fi}{}%
+  \psset{#1}%
+  \psmatrix@ii}
+\def\psmatrix@ii{%
+  \KillGlue
+  \edef\psm@beginmath{%
+    \ifmmode$\m@th\ifinner\textstyle\else\displaystyle\fi\fi}%
+  \edef\psm@endmath{\ifmmode$\fi}%
+  \let\\\psm@cr
+  \advance\psmatrixcnt by \@ne
+  \def\psm@thenode{M-\the\psmatrixcnt-\the\psrow-\the\pscol}%
+  \tabskip\z@
+  \psrow=\@ne
+  \pscol\z@
+  \psset{shortput=tablr}%
+  \leavevmode
+  \vbox\bgroup\halign\bgroup&%
+  \begingroup
+  \global\advance\pscol by \@ne
+  \csname psrowhook\romannumeral\psrow\endcsname
+  \csname pscolhook\romannumeral\pscol\endcsname
+  \psm@beginnode##\psm@endnode\endgroup
+  \cr}
+%
+\def\endpsmatrix{%
+  \crcr\egroup\unskip\egroup
+  \endgroup}
+%
+% hv 2007-10-16  fix bug with \\[name=...]
+%\def\psm@cr{{\ifnum0=`}\fi\@ifnextchar[{\psm@@cr}{\psm@@@cr{}}}
+\def\psm@cr{{\ifnum0=`}\fi\ps@ifnextchar[{\psm@@cr}{\psm@@@cr{}}}
+%
+\def\psm@@cr[#1]{\psm@@@cr{\vskip#1\relax}}
+\def\psm@@@cr#1{%
+  \ifnum0=`{\fi}{}\cr
+  \noalign{%
+  \global\advance\psrow 1
+  \global\pscol\z@
+  \vskip\psrowsep
+  #1}}
+\def\psm@beginnode{%
+  \@ifnextchar\psm@endnode
+    {\let\psm@endnode@i\relax\setbox\pst@hbox=\hbox{}}%
+    {\pst@object{psm@beginnode}}}
+\def\psm@beginnode@i{%
+  \setbox\pst@hbox=\hbox\bgroup
+  \psm@beginmath
+  \begingroup
+  \ignorespaces}
+\def\psm@endnode@i{%
+  \unskip
+  \endgroup
+  \psm@endmath
+  \egroup
+  \use@par
+  \@psttrue}
+\def\psm@endnode{%
+  \@pstfalse
+  \psm@endnode@i
+  \ifnum\pscol>1\relax \pshskip\pscolsep \fi
+  \psk@mnodesize
+  \hfil
+  \nodealigntrue
+  \if@pst\csname mnode@\psk@mnode\endcsname
+  \else\csname mnode@\psk@emnode\endcsname\fi
+  \psk@mcol
+  \psk@@mnodesize}
+% DG/SR modification begin - Sep. 3, 1999 - Patch 10 - From Michael Sharpe
+%\def\psspan#1{\mscount#1\relax\loop\ifnum\mscount>\@ne \sp@n\repeat}
+\def\psspan#1{\global\mscount#1\relax\pstloop\ifnum\mscount>\@ne\sp@n\repeat}
+\def\pstloop#1\repeat{\gdef\pstiterate{#1\relax\expandafter\pstiterate\fi}%
+  \pstiterate
+  \let\pstiterate\relax}
+% DG/SR modification end
+\define@key[psset]{pst-node}{name}[\relax]{\pst@getnode{#1}\psk@name}
+\let\psk@name\relax
+\define@key[psset]{pst-node}{mcol}[c]{%
+  \ifx r#1\relax\let\psk@mcol\relax\else
+    \ifx l#1\relax\let\psk@mcol\hfill\else
+    \let\psk@mcol\hfil\fi\fi}
+\psset[pst-node]{mcol=c}
+%
+\define@key[psset]{pst-node}{mnodesize}[-1pt]{%
+  \pssetlength\pst@dimg{#1}%
+  \ifdim\pst@dimg<\z@
+    \let\psk@mnodesize\relax
+    \let\psk@@mnodesize\relax
+  \else
+    \edef\psk@mnodesize{\noexpand\hbox to\number\pst@dimg sp\noexpand\bgroup}%
+    \let\psk@@mnodesize\egroup
+  \fi}
+\psset[pst-node]{mnodesize=-1pt}
+%
+\def\mnode@R{\rnode@iii\Rnode@ii{\psm@thenode}}
+\def\mnode@r{\rnode@iii\rnode@iv{\psm@thenode}}
+\def\mnode@oval{\ovalnode@ii{\psm@thenode}}
+\def\mnode@tri{\trinode@ii{\psm@thenode}}
+\def\mnode@dia{\dianode@ii{\psm@thenode}}
+\def\mnode@C{{\nodealigntrue\cnode@ii(\z@,\z@){\psk@radius}{\psm@thenode}}}
+\def\mnode@f{{\nodealigntrue\fnode@ii(\z@,\z@){\psm@thenode}}}
+\def\mnode@circle{\circlenode@ii{\psm@thenode}}
+% hv modification begin - Aug. 16, 2007
+\def\mnode@Circle{\Circlenode@ii{\psm@thenode}}
+% hv modification end - Aug. 16, 2007
+\def\mnode@p{\pnode(\z@,\z@){\psm@thenode}}
+% DG/SR modification begin - Jul. 22, 1997 - Patch 1
+\def\mnode@dot{\dotnode@ii(\z@,\z@){\psm@thenode}}
+% DG/SR modification end
+\def\mnode@none{\box\pst@hbox}
+%
+\define@key[psset]{pst-node}{mnode}[R]{%
+  \@ifundefined{mnode@#1}%
+    {\@pstrickserr{\string\psmatrix\space node `#1' not defined.}\@ehpa}%
+    {\edef\psk@mnode{#1}}}
+\define@key[psset]{pst-node}{emnode}[none]{%
+  \@ifundefined{mnode@#1}%
+    {\@pstrickserr{\string\psmatrix\space node `#1' not defined.}\@ehpa}%
+    {\edef\psk@emnode{#1}}}
+\psset[pst-node]{mnode=R,emnode=none}
+%
+%%%% FROM pst-coil.tex
+\def\nccoil{\pst@object{nccoil}}
+\def\nccoil@i{\check@arrow{\nccoil@ii}}
+\def\nccoil@ii#1#2{\nc@object{Open}{#1}{#2}{.5}{
+  \tx@NCCoor
+  tx@Dict begin
+  4 2 roll
+  \psk@coilwidth \pscoilheight
+  \psk@coilarmA \psk@coilarmB
+  \psk@coilaspect \psk@coilinc
+  \pst@coildict \tx@Coil end
+  end}%
+}
+\def\nczigzag{\pst@object{nczigzag}}
+\def\nczigzag@i{\check@arrow{\nczigzag@ii}}
+\def\nczigzag@ii#1#2{\nc@object{Open}{#1}{#2}{.5}{
+  \tx@NCCoor
+  tx@Dict begin
+  4 2 roll
+  \pscoilheight
+  \psk@coilwidth
+  \psk@coilarmA
+  \psk@coilarmB
+  \pst@coildict \tx@ZigZag end
+  \psline@iii
+  \tx@Line
+  end}%
+}
+% \psGetNodeCenter defines the PS variable #1.x and #1.y, which can then
+% be used by the user. #1 must be a valid node name
+\def\psGetNodeCenter#1{ tx@NodeDict begin /N@#1 load GetCenter end % x y on stack in system coor
+  \pst@number\psyunit div /#1.y exch def 	% /#1.y in user coor
+  \pst@number\psxunit div /#1.x exch def }	% /#1.x in user coor
+%\def\psGetNodeEdgeA#1#2{ tx@NodeDict begin /N@#2 load #2 GetEdgeA end % x y on stack in system coor
+%  \pst@number\psyunit div /#1.y exch def 	% /#1.y in user coor
+%  \pst@number\psxunit div /#1.x exch def }	% /#1.x in user coor
+%
+%%%%%%%%%%%%%% the pst-node-tools part %%%%%%%%%%%%%%%%%%%%%%%%
+%
+\def\ncbarr{\pst@object{ncbarr}}
+\def\ncbarr@i#1#2{%
+  \begingroup
+  \use@par%
+  \psLNode(#1)(#2){0.5}{barr@tempNode}%
+  \pst@dimc=\psk@angleA pt
+  \pst@dimd=180pt
+  % be sure, that angleA is 0 or 180. if not, we set it to 0
+  \ifdim\pst@dimc=\z@\else\ifdim\pst@dimc=\pst@dimd\else\psset{angleA=0}\fi\fi
+  \ncbar[arrows=-]{#1}{barr@tempNode}
+  \ifdim\psk@angleA pt=\z@\relax
+    \ncbar[angleA=180,angleB=180]{barr@tempNode}{#2}
+  \else\ncbar[angleA=0,angleB=0]{barr@tempNode}{#2}\fi%
+  \endgroup%
+}
+%   #1-------#4----------------#2
+% where #1#4= #3 * #1#2
+%
+\def\psLNode(#1)(#2)#3#4{%
+  \pst@getcoor{#1}\pst@tempA%
+  \pst@getcoor{#2}\pst@tempB%
+  \pnode(!
+    \pst@tempA /YA exch \pst@number\psyunit div def
+    /XA exch \pst@number\psxunit div def
+    \pst@tempB /YB exch \pst@number\psyunit div def
+    /XB exch \pst@number\psxunit div def
+    /dx XB XA sub def
+    /dy YB YA sub def
+    XA dx #3\space mul add YA dy #3\space mul add){#4}}
+%
+% build the linear combination #2*#1+#4*#3=#5
+\def\psLCNode(#1)#2(#3)#4#5{%
+  \pst@getcoor{#1}\pst@tempA%
+  \pst@getcoor{#3}\pst@tempB%
+  \pnode(!
+    \pst@tempA /YA exch \pst@number\psyunit div def
+    /XA exch \pst@number\psxunit div def
+    \pst@tempB /YB exch \pst@number\psyunit div def
+    /XB exch \pst@number\psxunit div def
+    XA #2\space mul XB #4\space mul add
+    YA #2\space mul YB #4\space mul add){#5}}
+%
+\def\psLDNode(#1)(#2)#3#4{%  
+% #1: node A  #2: node B  #3: dimen measured from A  #4: node name
+  \pst@getcoor{#1}\pst@tempA%
+  \pst@getcoor{#2}\pst@tempB%
+  \pssetlength\pst@dimb{#3}%
+  \pnode(!%
+    \pst@tempA /YA exch \pst@number\psyunit div def
+    /XA exch \pst@number\psxunit div def
+    \pst@tempB /YB exch \pst@number\psyunit div def
+    /XB exch \pst@number\psxunit div def
+    /dx XB XA sub def
+    /dy YB YA sub def
+    /angle dy dx Atan def
+    /linelength \pst@number\pst@dimb \pst@number\psunit div def
+    XA linelength angle cos mul add YA linelength angle sin mul add ){#4}%
+}
+%
+%% Author: Michael Sharpe (msharpe at ucsd.edu)
+% Macros defined in this file:
+% \defaultvalue{<command>}{<value>} assigns <value> to <command> is command is not defined, or is empty.
+% \testAlg---used internally to test whether an parametric expression in t is algebraic
+% \trim{<command>} trims white space from ends of expansion of <command>
+% \hasparen sets \parentrue if its argument contains a (
+% \hasequal sets \equaltrue if its argument starts with =
+% \equalwhat returns what follows =
+% \parsenodexn parses a node expression recursively. Better to use \nodexn.
+% \normalvec(<vec>){<nodename>} returns vector normal to <vec> (same length) in <nodename>
+% \curvepnode{<t>}{<expression in t>}{<nodename>} Eg, \curvepnode{1}{sin(t) | cos(t)}{P} sets a pnode named P at (cos(1), sin(1))
+% \psparnode{<t>}{<expression> in t>}{<nodename>} is called by \curvename if expression is PostScript, not algebraic
+% \algparnode{<t>}{<expression> in t>}{<nodename>} is called by \curvename if expression is algebraic, not PostScript
+% \nodexn is like \parsenodexn, slightly different syntax. \nodexn{<exn>}{<name>} evaluates <exn> as a node expression and calls the result <name>. 
+% \psxline(P){<nodexn1>}{<nodexn2>} draws line from P+<nodexn1> to P+<nodexn2>. The novelty is that the last two arguments can be node expressions.
+% \curvepnodes{<tmin>}{<tmax>}{<expression in t>}{<node root name>} Uses current setting of plotpoints (default 50) to define a sequence of pnodes along the curve. Eg, \curvepnodes[plotpoints=100]{0}{1}{t+t^2 | Ex(-t)}{P} sets pnodes P0..P99 at equally spaced t values along the curve, and defines the macro \Pnodecount to 99, the highest index. The expression in t may be either algebraic or PostScript, and is handled automatically detected.
+% \fnpnode{<xval>}{<expression in x>}{<nodename>} sets a single pnode on graph. Eg, \fnpnode{.5}{x 2 mul x 1 add mul}{P} declares the pnode P at the point x=0.5 on the graph. (Same as \pnode(!/x 0.5 def x x 2 mul x 1 add mul}){P}.) If your expression in t is algebraic, you must use the keyword algebraic, as in \fnpnode[algebraic]{0.5}{2*x*(x+1)}{P}.
+% \fnpnodes{<xmin}{<xmax>}{<expression in x>}{<node root name>} Is exactly the same as \curvenodes, but for the graph of a function. The keyword algebraic must be specified if your expression is algebraic
+% \AtoB(A)(B){C} defines node by name C essentially as B-A
+% \AplusB(A)(B){C} defines node by name C essentially as A+B
+% \midAB(A)(B){C} defines node by name C essentially as (A+B)/2
+% \psnline[linewidth=1pt,arrows=->](3,5){P}, for example, expects that there are pnodes named P3..P7 (total of 5), and effectively gives the same result as \psline[linewidth=1pt,arrows=->](P3)(P4)(P5)(P6)(P7). Note that arrow must be specified with a keyword, not as an argument.
+% \shownode(P) displays in the console window the coordinates of node P. This will not appear until the final stage of processing the PostScript file. It is a debugging tool.
+% \getnodelist{<node root name>}{<next command>} is useful in writing pstricks macros, where there is a list of parenthesized coordinates to be read and turned into a node sequence, following which <next command> is followed.
+% \pnodes{P}(1,2)(2;3)... is effectively \getnodelist{P}{}(1,2)(2;3)..., just a quick way to turn a list of coordinates into pnodes P0 P1 ...
+% \psLCNodeVar is similar to \psLCNode, and provides a means of forming a linear combination of two nodes, thought of as vectors. Where \psLCNode(A){a}(B){b}{C} effectively makes C=aA+bB, \psLCNodeVar(A)(B)(a,b){C} does the same, but the third argument (a,b) may be specified in PostScript code or any form recognized by \SpecialCoor. Unlike \psLCNode, the name C may be one of A, B.
+% \psRelNodeVar is similar to \psRelNode, and provides a means of rotating and changing the length of a line segment AB about A. The effect of \psRelNodeVar(A)(B)(2;30){C} is the same as \psRelNode[angle=30](A)(B){2}{C}, but the third argument (2;30) may be specified in PostScript code, which is not possible with \psRelNode.
+% \psRelLineVar stands to \psRelLine as \psRelNodeVar stands to \psRelNode.
+% \rhombus{<edge length>}(A)(B){C}{D} computes the two remaining vertices C, D given two opposing vertices A, B of a rhombus with given edge length. It does not draw the rhombus--- that can be handled easily by \pspolygon(A)(C)(B)(D).
+% \psrline(P)(Q)... is like \psline, drawing a line starting at (P), with successive increments (Q)... It has the same options as \psline. Eg, \psrline[linecolor=red]{->}(1,1)(1,0)
+% \polyIntersection is the most complicated macro in the collection. It has two forms
+% \polyIntersection{<Nodename1>}{<Nodename2>}(A)(B)(1,2)(3;30)(6,5)...
+%works with the line starting at A heading toward B, and computes the first point that lies on the polyline (1,2)(3;30)(6,5)..., calling it <Nodename1>. It also computes the first point in the opposite direction (from A) lying on that polyline, naming it <Nodename2>. If one or other of these intersections is empty, the nodes are set to remote points on the line. The two nodes are then joined by a line. The effect depends on the location of A and B relative to the polyline, with two cases worth noting.
+% (a) if the polyline is closed and if A, B are interior to one of its components, you get a line segment from one edge to the other, containing AB.
+% (b) If the polylne is simple and closed, and one of A, B is inside and the other outside, the resulting line segment will contain A but not B. 
+% \polyIntersection{<Nodename1>}{<Nodename2>}(A)(B){P}{n} works exactly the same as \polyIntersection{<Nodename1>}{<Nodename2>}(A)(B)(P0)(P1)...(Pn), assuming P0...Pn are previously defined as pnodes.
+% \psStepa is like \psStep (pstricks-add) but for a node sequence rather than equally spaced abscissas. \psStepa[options]{<node root>}{<maxindex>} draws a step function with jumps at the successive nodes in the node sequence. Eg, \psStepa{P}{10} has jumps at P0..P10
+%
+\newcount\pst@args%used in several macros
+\newcount\num@pts
+\newcount\pst@argcnt% for use in parsing node expressions
+\def\PST@root{}
+\let\pst@next\relax
+%my scratch variables
+\def\my@tempA{}
+\def\my@tempB{}
+\def\my@tempC{}
+\def\my@tempD{}
+\def\my@next{}
+\newif\if@paren%
+\newif\if@equal%
+\newif\if@colon%
+\newif\ifshow
+\def\plussign{+}\def\minussign{-}
+%
+%
+\def\defaultvalue#1#2{%#1 is a command, #2 is a value, possibly a command
+  \ifdefined#1\ifx#1\@empty\xdef#1{#2}\fi\else\xdef#1{#2}\fi}%
+%
+\def\testAlg#1|#2\@nil{%
+\ifx\relax#2\relax%
+   \let\my@next\psparnode\xdef\my@tempD{}%
+\else%
+   \let\my@next\algparnode\xdef\my@tempD{A}% algebraic
+\fi}%
+%
+%Jonathan Fine's trim
+\def\trim #1{\expandafter\trim@\expandafter{#1 }#1}%
+\def\trim@ #1{\trim@@ @#1 @ #1 @ @@}%
+\def\trim@@ #1@ #2@ #3@@{\trim@@@\empty #2 @}%
+\def\unbrace#1{#1}%
+\unbrace{\def\trim@@@ #1 } #2@#3{\expandafter\def%
+  \expandafter #3\expandafter {#1}}%
+%
+\def\hasparen#1(#2\@nil{%check if expression contains a (--call with \hasparen#1(\@nil
+  \ifx\relax#2\relax \@parenfalse \else \@parentrue\fi}%
+%
+\def\hasequal#1=#2\@nil{%check if expression contains a =--call with \hasequal#1=\@nil
+  \ifx\relax#2\relax \@equalfalse \else \@equaltrue\fi
+  \hascolon#2:\@nil}%
+%
+\def\hascolon#1:#2\@nil{%check if expression contains a :--call with \hascolon#1:\@nil
+\ifx\relax#2\relax \@colonfalse \else \@colontrue\fi}%
+%
+\def\equalwhat#1=#2:#3\@nil{{#2}{#3}}%
+%
+\def\parsenodexn#1(#2)#3\@nil{%
+  \def\coeffA{#1}\edef\nodeA{#2}%
+  \trim\coeffA%
+  \ifx\nodeA\@empty\else%
+    \pnode(#2){@@TMP}%
+    \ifx\coeffA\@empty\def\coeffA{1}\else%
+      \ifx\coeffA\plussign\def\coeffA{1}\else\ifx\coeffA\minussign\def\coeffA{-1}\fi\fi\fi% 
+  \edef\cmd{\noexpand\psLCNode(@TMP\the\pst@argcnt){1}(@@TMP){\coeffA}{@TMP}}%
+  \cmd%
+  \advance\pst@argcnt by \@ne%
+  \pnode(@TMP){@TMP\the\pst@argcnt}%
+  \parsenodexn#3\@nil%
+  \fi}%
+%
+\def\normalvec(#1)#2{%
+%pnode | new pnode normal to old, same  length
+  \psRelNodeVar(0,0)(#1)(0,1){#2}}%
+%
+\def\curvepnode#1#2#3{%
+% #1=t value, #2=x(t) y(t) in either form,#3=node name,
+%must first detect which form of x(t) y(t), looking for |
+  \edef\my@tempA{#2}% x(t) y(t) expanded
+  \expandafter\testAlg\my@tempA|\@nil\my@next {#1}{#2}{#3}}
+%
+\def\psparnode#1#2#3{%
+% #1=t value, #2=x(t) y(t) in PS form,#3=node name,
+  \pnode(!/t #1 def #2){#3}%
+  \pnode(!/t #1 .001 sub def #2 
+          /t #1 .001 add def 
+           #2 3 -1 roll sub 3 1 roll sub neg 
+           2 copy Pyth dup 3 1 roll div 3 1 roll div ){#3tang}}%unit tangent vector at t
+%
+\def\algparnode#1#2#3{%
+% #1=t value, #2=x(t) | y(t) in alg form,#3=node name,
+%\pstVerb{tx@Dict begin /t #1 def /Func (#2) AlgParser cvx def end}
+%\pnode(!Func){#3}}%
+  \pstVerb{tx@Dict begin /Func (#2) AlgParser cvx def end }
+  \pnode(!/t #1 def Func){#3}
+  \pnode(!/t #1 .001 sub def Func 
+          /t #1 .001 add def 
+          Func 3 -1 roll sub 3 1 roll sub neg 
+          2 copy Pyth dup 3 1 roll div 3 1 roll div ){#3tang}%unit tangent vector at t
+}%
+%
+\def\nodex#1{%
+%#1=node expression --set nodename to @TMP
+\expandafter\hasparen#1(\@nil%
+\if@paren%it's an expression
+  \pnode(0,0){@TMP0}%
+  \pst@argcnt=0%
+  \expandafter\parsenodexn#1()\@nil%
+\else%
+  \def\my@tempC{#1}%
+  \ifx\my@tempC\@empty\pnode(0,0){@TMP}\else\pnode(#1){@TMP}\fi%
+\fi}%\if@paren
+%
+\def\nodexn#1#2{%
+%#1=node expression | #2=node name
+\hasparen#1(\@nil%
+\if@paren%it's an expression
+  \pnode(0,0){@TMP0}%
+  \pst@argcnt=0%
+  \parsenodexn#1()\@nil%
+  \pnode(@TMP){#2}%
+\else%
+  \def\my@tempC{#1}%
+  \ifx\my@tempC\@empty\pnode(0,0){#2}\else\pnode(#1){#2}\fi%
+\fi}%\if@paren
+%
+\def\psxline{\pst@object{psxline}}%
+\def\psxline@i{\@ifnextchar({\psxline@iii}{\psxline@ii}}%
+\def\psxline@ii#1{%
+\addto@par{arrows=#1}%
+\psxline@iii}%
+\def\psxline@iii(#1)#2#3{{%#1=basepoint, #2,#3 node expressions
+\pst@killglue%
+\use@par%
+\nodexn{#2}{@TMP@a}%
+\AplusB(#1)(@TMP@a){@TMP@A}%
+\nodexn{#3}{@TMP@a}%
+\AplusB(#1)(@TMP@a){@TMP@B}%
+\psline(@TMP@A)(@TMP@B)%
+}%
+\ignorespaces}%
+%
+\def\curvepnodes{\pst@object{curvepnodes}}
+\def\curvepnodes@i#1#2#3#4{{%optional [plotpoints=xx]
+%  #1=tmin,#2=tmax,#3=function (of t),#4=node root name,
+  \pst@killglue
+  \use@par
+  \edef\my@tempA{#3}% x(t) y(t) expanded
+  \expandafter\testAlg\my@tempA|\@nil %
+%modify code to work in ps
+  \pstVerb{%
+	tx@Dict begin 
+	/t0 #1 def
+	/t1 #2 def  % so we can use constants from tx@Dict
+	 t1 t0 sub end \psk@plotpoints div /dt exch def }%
+  \pst@cntc=\psk@plotpoints\relax%\psk@plotpoints=plotpoints-1
+  \advance\pst@cntc by \@ne\relax %=plotpoints
+  \ifx\my@tempD\@empty\pstVerb{/Func (#3) cvx def }%
+  \else\pstVerb{tx@Dict begin /Func (#3 ) AlgParser cvx def end }%
+  \fi%
+  \multido{\i=0+1}{\pst@cntc}{%
+    \pnode(! /t #1 dt \i\space mul add def t Func ){#4\i}}%
+  \expandafter\xdef \csname #4nodecount\endcsname {\psk@plotpoints}%
+  \typeout{Created nodes #40 .. #4\psk@plotpoints}%
+}\ignorespaces}%
+%
+\def\fnpnode{\pst@object{fnpnode}}
+\def\fnpnode@i#1#2#3{{%optional [algebraic]
+%#1=x value | #2=fn of x | #3=node name
+  \pst@killglue
+  \use@par
+  \ifPst@algebraic\pnode(*#1 {#2}){#3}\else\pnode(! /x #1 def x #2){#3}\fi
+}\ignorespaces}%
+%
+\def\fnpnodes{\pst@object{fnpnodes}}
+\def\fnpnodes@i#1#2#3#4{{%optional [algebraic]
+%#1=xmin | #2=xmax | #3= fn of x | #4=node name
+\pst@killglue
+\use@par
+\pst@dima=#1pt \pst@dimb=#2pt \advance\pst@dimb -\pst@dima%
+\pst@cnta=\psk@plotpoints \relax %=plotpoints-1
+\def\PST@root{#4}
+\divide\pst@dimb by \pst@cnta%plotpoint-1 intervals
+\pst@cntc=\pst@cnta %
+\advance\pst@cntc by 1 \relax %=plotpoints
+\ifPst@algebraic 
+  \multido{\i=0+1}{\pst@cntc}{\pnode(*\pst@number\pst@dima\space {#3}){#4\i}%
+  \advance\pst@dima \pst@dimb}%
+\else
+    \multido{\i=0+1}{\pst@cntc}{\pnode(!/x \pst@number\pst@dima\space def x #3){#4\i}%
+  \advance\pst@dima \pst@dimb}%
+\fi%
+\expandafter\xdef \csname \PST@root nodecount\endcsname {\the\pst@cnta}
+\typeout{Created nodes #40 .. #4\the\pst@cnta}%
+}\ignorespaces}%
+%
+\def\AtoB(#1)(#2)#3{\psLCNodeVar(#1)(#2)(-1,1){#3}}
+\def\AplusB(#1)(#2)#3{\psLCNodeVar(#1)(#2)(1,1){#3}}
+\def\midAB(#1)(#2)#3{\psLCNodeVar(#1)(#2)(.5,.5){#3}}
+%
+\def\psnline{\pst@object{psnline}}%line of nodes
+\def\psnline@i{\@ifnextchar({\psnline@iii}{\psnline@ii}}%
+\def\psnline@ii#1{%
+\addto@par{arrows=#1}%
+\psnline@iii}%
+\def\psnline@iii(#1,#2)#3{{%
+\pst@killglue%
+\use@par%
+\pst@cnta=#2 \relax\advance\pst@cnta by 1
+\edef\@tmp{}%
+\multido{\i=#1+1}{\pst@cnta}{\xdef\@tmp{\@tmp(#3\i)}}%
+\expandafter\psline\@tmp}%
+\ignorespaces}%
+%
+\def\shownode(#1){%display node user coords in console
+\pstVerb{ (Node #1: ) = }%
+\pnode(! /nodecoors 2 array def \psGetNodeCenter{#1} 
+ nodecoors 1 #1.y put nodecoors 0 #1.x put nodecoors == #1.x #1.y ){temp@}
+}
+% Use to construct a sequence of nodes
+% Eg, \pnodes{P}(0,1)(2;5)(3,4) defines nodes P0, P1, P2 with respective locations
+% and a macro \Pnodecount containing the highest index created
+\def\pnodes#1{\getnodelist{#1}{}}
+%
+\def\getnodelist#1#2{%
+\pst@args=0 \relax%
+\def\PST@root{#1}%
+\def\pst@next{#2}% command to perform after reading list
+\getnext@Node}%
+%
+\def\getnext@Node{\@ifnextchar({\getnext@Node@i}{\advance\pst@args by -1 \expandafter\xdef \csname \PST@root nodecount\endcsname {\the\pst@args}
+\typeout{Created nodes \PST@root0 .. \PST@root\the\pst@args}\pst@next}}%
+%
+\def\getnext@Node@i(#1){%
+\pnode(#1){\PST@root\the\pst@args}%
+\advance\pst@args by 1\relax%
+\getnext@Node}%
+%
+\def\psLCNodeVar(#1)(#2)(#3)#4{%
+\pst@getcoor{#1}\my@tempA%
+\pst@getcoor{#2}\my@tempB%
+\pnode(#3){tmpLCn@de}%
+\pnode(!%
+  \my@tempA /YA exch \pst@number\psyunit div def
+  /XA exch \pst@number\psxunit div def
+  \my@tempB /YB exch \pst@number\psyunit div def
+  /XB exch \pst@number\psxunit div def %stack now empty
+  \psGetNodeCenter{tmpLCn@de}\space
+  XA tmpLCn@de.x mul XB tmpLCn@de.y mul add
+  YA tmpLCn@de.x mul YB tmpLCn@de.y mul add){tmpLCn@deA}%
+\pnode(tmpLCn@deA){#4}%
+}%
+%
+\def\psRelNodeVar{\pst@object{psRelNodeVar}}
+\def\psRelNodeVar@i(#1)(#2)(#3)#4{{% A - B - factor;angle - node name
+  \use@par
+  \pst@getcoor{#1}\my@tempA%
+  \pst@getcoor{#2}\my@tempB%
+   \pnode(#3){tmpn@de}%
+\pnode(!
+  /unit \pst@number\psyunit \pst@number\psxunit div def % yunit/xunit
+    \my@tempA /YA exch \pst@number\psyunit div def
+    /XA exch \pst@number\psxunit div def
+    \my@tempB /YB exch \pst@number\psyunit div YA sub 
+    \ifPst@trueAngle\space unit mul \fi\space def
+    /XB exch \pst@number\psxunit div XA sub def
+    %complex multiply (XB,YB) and (P.x,P.y), then add (XA,YA)
+    \psGetNodeCenter{tmpn@de}
+    XB tmpn@de.x mul YB tmpn@de.y mul sub
+    YB tmpn@de.x mul XB tmpn@de.y mul add
+    \ifPst@trueAngle\space unit div \fi\space 
+   YA add exch XA add exch %x, y coords on stack
+    ){#4}%
+}}
+%
+\def\psRelLineVar{\pst@object{psRelLineVar}}
+\def\psRelLineVar@i{\@ifnextchar({\psRelLineVar@iii}{\psRelLineVar@ii}}
+\def\psRelLineVar@ii#1{%
+  \addto@par{arrows=#1}%
+  \psRelLineVar@iii}
+\def\psRelLineVar@iii(#1)(#2)(#3)#4{{%
+  \pst@killglue
+  \use@par
+  \psRelNodeVar(#1)(#2)(#3){#4}%
+  \psline(#1)(#4)%
+}\ignorespaces}
+%
+\def\rhombus#1(#2)(#3)#4#5{% \rhombus{m}(B)(D){A}{C} 
+\AtoB(#2)(#3){node@P}% P=BD
+% compute angle between BD and BC, in Postscript
+\pnode(! %compute angle and scale in PS
+/tmp \psGetNodeCenter{node@P} node@P.x node@P.y 
+Pyth 2 div def %tmp=half-length of BD
+/ang tmp #1\space div Acos def %ang=angle from BD to BC & BA
+#1\space tmp 2 mul div %scale factor s=m/BD
+dup ang cos mul exch ang sin mul ){node@A1}% s cos(ang), s sin(ang)
+\pnode(! \psGetNodeCenter{node@A1} node@A1.x node@A1.y neg ){node@A2}%reflect in x axis
+\psRelNodeVar(#2)(#3)(node@A1){#4}%
+\psRelNodeVar(#2)(#3)(node@A2){#5}%
+}%
+%
+\def\psrline{\pst@object{psrline}}% relative lines
+\def\psrline@i{\@ifnextchar({\psrline@iii}{\psrline@ii}}%
+\def\psrline@ii#1{%
+\addto@par{arrows=#1}%
+\psrline@iii}%
+\def\psrline@iii{%
+\getnodelist{@tmpnode}{\psrline@iv}%
+}%
+\def\psrline@iv{%
+   \ifnum\pst@args<0\else%do nothing
+      \pnode(@tmpnode0){@tmpnodeB0}%
+      \multido{\iA=1+1,\iB=0+1}{\pst@args}{%
+      \AplusB(@tmpnodeB\iB)(@tmpnode\iA){@tmpnodeB\iA}}%
+      \psrline@v%
+   \fi%
+}%
+\def\psrline@v{{%finish up
+  \pst@killglue%
+  \use@par%
+  \xdef\tmp{(@tmpnodeB0)}%
+  \multido{\i=1+1}{\pst@args}%
+{\xdef\tmp{\tmp(@tmpnodeB\i)}}%
+\expandafter\psline\tmp%
+}\ignorespaces}%
+%
+\def\polyIntersections#1#2(#3)(#4){%
+%nodename1 | nodename2 | A | B | % intersections with line from A, B 
+\def\nodenameA{#1}\def\nodenameB{#2}%
+\pnode(#3){P@A}\pnode(#4){P@B}%
+\@ifnextchar({\polyIntersections@next}{\polyIntersections@ii}%
+}%
+\def\polyIntersections@ii#1#2{%
+\def\root@node{#1}\num@pts=#2 \relax%
+\polyIntersections@iii}% 
+%
+\def\polyIntersections@next{%read as many points as exist
+\def\root@node{P@}\getnodelist{P@}{\num@pts=\pst@args \relax\polyIntersections@iii}%
+}%
+\def\polyIntersections@iii{%nodes are now XXX0....XXXn, n=num@pts
+\pst@cnta=\num@pts \relax\advance\pst@cnta by 1 \relax%
+\pstVerb{%
+ /xarray \the\pst@cnta\space array def
+ /yarray \the\pst@cnta\space array def  tx@Dict begin }%
+\multido{\i=0+1}{\the\pst@cnta}{\pstVerb{ \psGetNodeCenter{\root@node\i} xarray \i\space \root@node\i.x put yarray \i\space \root@node\i.y put }}%
+\pstVerb{ /tposmin 100 def /tnegmax -100 def %/argposmin 0 def /argposmax 0 def 
+\psGetNodeCenter{P@B} \psGetNodeCenter{P@A} 
+/dx P@B.x P@A.x sub def 
+/dy P@B.y P@A.y sub def 
+/lenAB dx dy Pyth def
+/oldx xarray 0 get def /oldy yarray 0 get def 
+1 1 \the\num@pts\space {/k exch def /newx xarray k get def /newy yarray k get def 
+/ddx newx oldx sub def /ddy newy oldy sub def 
+/det ddy dx mul ddx dy mul sub def
+det abs lenAB ddx ddy Pyth mul .001 mul gt 
+{/ac oldx P@A.x sub def /bd oldy P@A.y sub def 
+ /tt  ac ddy mul bd ddx mul sub det div def %solve for t value at intersection
+ /ss ac  dy mul bd dx mul sub det div def % solve for s value at intersection
+ss 0 ge 
+   {ss 1 le 
+        {tt 0 lt {tt tnegmax gt {/tnegmax tt def} if } {tt tposmin lt {/tposmin tt def} if } ifelse }
+    if } % ss 1 le
+if }%ss 0 ge
+ if %det>
+ /oldx newx def /oldy newy def} for end }%
+\pnode(! \psGetNodeCenter{P@A} \psGetNodeCenter{P@B} P@B.x P@A.x sub  tposmin mul P@A.x add  P@B.y P@A.y sub tposmin  mul P@A.y add ){\nodenameA}%
+\pnode(! \psGetNodeCenter{P@A} \psGetNodeCenter{P@B} P@B.x P@A.x sub tnegmax mul P@A.x add P@B.y P@A.y sub tnegmax mul P@A.y add){\nodenameB}%
+}%
+%
+\def\actualscale#1 #2 scale{% extract x-scale from, eg,  {2. 2. scale}
+#1}
+%
+\def\psGetCenter#1{ tx@NodeDict begin /N@#1 load GetCenter end }% x y on stack in system coor
+%
+\def\ArrowNotch{\pst@object{ArrowNotch}}
+\def\ArrowNotch@i#1#2#3#4{{%
+%noderootname | index | arrowdirection | notchnodename  % 
+\pst@killglue%
+\use@par%
+\def\inc{-1}%
+\ifx#3<\def\inc{1}\fi% -1 means notch to left of arrowhead
+%get length of pointed arrow under these conditions (types ->, -D> and their reverses)
+\pstVerb{ 
+    1 \psk@arrowinset\space sub \psk@arrowlength\space \psk@arrowsize\space  
+    \pst@number\pslinewidth \space mul add  mul mul 
+    \expandafter\actualscale\psk@arrowscale \space  mul 
+    /hh exch def /hh1 hh .05 sub def }% PS variable hh contains dist from tip to notch of arrow, in pts
+\def\root@node{#1}\num@pts=\csname\root@node nodecount\endcsname %
+\pst@cntb=\num@pts \advance\pst@cntb by \@ne%actual node count
+\pst@cnta=\num@pts \advance\pst@cnta by \thr@@%size of PS array
+\pst@cntc=#2 \relax% index of center of circle
+\ifnum\pst@cntc>\num@pts \pnode(0,0){#4}\else
+%compute a (screen based) unit vector in directions P1P0 and Pn-1Pn
+\pstVerb{%
+/PythSq { dup mul exch dup mul add } def
+/PtSub {					%  xA yA xB yB
+  3 -1 roll 		% xA xB yB yA
+  sub neg		% xA xB yA-yB
+  3 1 roll 		% yB-yA xA xB
+  sub			% yB-yA xA-xB
+  exch                     % xB-xA yA-yB
+} def
+  /xarray \the\pst@cnta\space array def
+  /yarray \the\pst@cnta\space array def  
+  tx@Dict begin }% end pstVerb
+\multido{\i=0+1,\ib=1+1}{\the\pst@cntb}{\pnode(! \psGetCenter{\root@node\i}\space  % center on stack in system coords, not user coords
+yarray \ib\space 3 -1 roll put xarray \ib\space 3 -1 roll put 0 0 ){@tmp}}% end multido
+%\pstVerb{ \psGetCenter{\root@node6} == == }
+\pnode(! xarray 1 get dup yarray 1 get dup 3 1 roll % x1 y1 x1 y1
+xarray 2 get yarray 2 get PtSub  % x1 y1 x1-x2 y1-y2
+2 copy Pyth hh div 2 div dup % x1 y1 x1-x2 y1-y2 d d ,d->d/2*hh
+3 1 roll % x1 y1 x1-x2 d y1-y2 d
+div 3 1 roll div %x1 y1  (y1-y2)/d (x1-x2)/d
+3 1 roll %x1  (x1-x2)/d y1  (y1-y2)/d
+add 3 1 roll add %  y1-(y2-y1)/d x1-(x2-x1)/d
+ xarray 0 3 -1 roll put yarray 0 3 -1 roll put %stack empty
+ xarray length 2 sub /topnum exch def 
+ xarray topnum get dup yarray topnum get dup 3 1 roll %xn yn xn yn
+topnum 1 sub /topnum exch def xarray topnum get yarray topnum get % xn yn xn yn x(n-1) y(n-1)
+3 -1 roll sub  neg 3 1 roll sub exch % xn yn (xn-x(n-1)) (yn-y(n-1))
+2 copy Pyth hh div 2 div dup % xn yn (xn-x(n-1)) (yn-y(n-1)) d d (d->d/(2*h))
+3 1 roll div 3 1 roll div %xn yn (xn-x(n-1))/d (yn-y(n-1))/d
+3 -1 roll add 3 1 roll % y(n+1) x(n+1)
+topnum 2 add /topnum exch def xarray topnum 3 -1 roll put yarray topnum 3 -1 roll put % empty
+% next step--find first index outside circle of radius hh 
+ /oldcindex \the\pst@cntc\space 1 add def %position in array
+ xarray oldcindex get /xc exch def yarray oldcindex get /yc exch def
+ %hh .05 sub /hh exch def % that's close enough for a crossing
+/inc \inc\space def %+1 for left facing arrow, else -1 
+/cindex oldcindex def 
+{cindex inc add /cindex exch def xarray cindex get xc sub yarray cindex get yc sub Pyth dup hh1 gt 
+{ exit } if } loop % exit from loop with cindex the first index of an external point--dist on stack
+ hh1 .1 add lt { xarray cindex get yarray cindex get } %else within segment
+{ xarray cindex inc sub get dup yarray cindex inc sub get dup 4 -1 roll exch 
+xarray cindex get yarray cindex get PtSub /dy1 exch def /dx1 exch def dx1 dy1 PythSq /Aterm exch def 
+% dx1=x(n-1)-x(n), dy1=y(n-1)-y(n) [if inc=1]: dx1=x(n+1)-x(n), dy1=y(n+1)-y(n) [if inc=-1]
+% x(n-inc) y(n-inc),  Aterm=dx1^2+dy1^2
+ 2 copy xc yc PtSub % x(n-inc) y(n-inc) (x(n-inc)-xc) (y(n-inc)-yc)
+ 2 copy 2 copy 3 -1 roll mul 3 1 roll mul add hh dup mul sub % x(n-inc) y(n-inc) (y(n-inc)-yc) (x(n-inc)-xc) (x(n-inc)-xc)^2+(y(n-inc)-yc)^2-hh^2
+ Aterm div /Cterm exch def  % x(n-inc) y(n-inc)  (y(n-inc)-yc) (x(n-inc)-xc) , Cterm=((x(n-inc)-xc)^2+(y(n-inc)-yc)^2-hh^2)/(Aterm) (<0)
+ dx1 dy1 %  x(n-inc) y(n-inc) (y(n-inc)-yc)  (x(n-inc)-xc)  dx1 dy1
+ 4 1 roll mul 3 1 roll mul add Aterm div /Bterm exch def %   x(n-inc) y(n-inc) , Bterm=( (x(n-inc)-xc)*dx1+(y(n-inc)-yc)*dy1)/Aterm
+ Bterm abs neg dup dup mul Cterm sub sqrt add dup /tval exch def
+% x(n-inc) y(n-inc) tvalue
+ dup dx1 dy1 4 1 roll mul 3 1 roll mul  % x(n-inc) y(n-inc) t*dx1 t*dy1
+ PtSub } ifelse % x y screen coords of arrow notch now on stack---convert to user x y
+ \pst@number\psyunit div exch \pst@number\psxunit div exch  %use coords now on stack
+){#4}\fi%
+\pstVerb { end } %tx@Dict
+}\ignorespaces}%
+%
+%
+\catcode`\@=\TheAtCode\relax
+\endinput
+%%
+%% END pst-node.tex