%% $Id: pst-feyn.tex 826 2018-09-27 09:21:43Z herbert $
%%
%% This is file `pst-feyn.tex',
%%
%% IMPORTANT NOTICE:
%%
%% Package `pst-feyn.tex'
%%
%% Herbert Voss <hvoss _at_ 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.
%%
%% DESCRIPTION:
%%   `pst-feyn' is a style file for the drawing of Feynman diagrams.
%%    originally made by J.A.M. Vermaseren 14-feb-1994 for the picture environment
%
%%
\csname PSTFeynLoaded\endcsname
\let\PSTFeynLoaded\endinput
% Requires PSTricks,
\ifx\PSTricksLoaded\endinput\else   \input pstricks.tex\fi
\ifx\PSTXKeyLoaded\endinput\else    \input pst-xkey \fi
%
\def\fileversion{0.01}
\def\filedate{2018/09/26}
\message{`PST-feyn' v\fileversion, \filedate\space (HV,DL)}
%
\edef\PstAtCode{\the\catcode`\@} \catcode`\@=11\relax
\pst@addfams{pst-feyn}

\pstheader{pst-feyn.pro}
%
\def\axoxoff{0 }
\def\axoyoff{0 }
\def\axoxo{0 }
\def\axoyo{0 }
%
\define@key[psset]{pst-feyn}{amplitude}[0.25]{\pst@getlength{#1}\psk@feyn@amplitude}
\define@key[psset]{pst-feyn}{windings}[10]{\pst@checknum{#1}\psk@feyn@windings}
%\pst@getint{#1}\psk@feyn@windings}
\define@key[psset]{pst-feyn}{radius}[1]{\pst@getlength{#1}\psk@feyn@radius}
\psset[pst-feyn]{amplitude=0.25,windings=10,radius=1}
%
\def\psGluon{\pst@object{psGluon}}
\def\psGluon@i(#1)(#2){% Draws a gluon from (P1) to (P2) with amplitude and number of windings
%\put(\axoxoff,\axoyoff){\special{"\axocolor #1 \axoxo add #2 \axoyo add #3
% \axoxo add #4 \axoyo add #5 #6 \axowidth \axoscale gluon showpage}}
  \pst@getcoor{#1}\pst@tempA
  \pst@getcoor{#2}\pst@tempB
  \begin@OpenObj
  \addto@pscode{
    \pst@tempA\space \axoyo add exch \axoxo add exch 
    \pst@tempB\space \axoyo add exch \axoxo add exch 
    \psk@feyn@amplitude\space %\pst@number\psunit mul 
    \psk@feyn@windings
    tx@FeynDict begin gluon end 
  }%
  \end@OpenObj
  \ignorespaces
}

\def\psPhoton{\pst@object{psPhoton}}
\def\psPhoton@i(#1)(#2){%   Draws a photon from (x1,y1) to (x2,y2) with amplitude and number of windings
  \pst@getcoor{#1}\pst@tempA
  \pst@getcoor{#2}\pst@tempB
  \begin@OpenObj
  \addto@pscode{
    \pst@tempA\space \axoyo add exch \axoxo add exch 
    \pst@tempB\space \axoyo add exch \axoxo add exch 
    \psk@feyn@amplitude\space %\pst@number\psunit mul 
    \psk@feyn@windings
    tx@FeynDict begin photon end 
  }%
  \end@OpenObj
  \ignorespaces
}
%
\def\psZigZag{\pst@object{psZigZag}}
\def\psZigZag@i(#1)(#2){%   Draws a zigzag from (x1,y1) to (x2,y2) with amplitude and number of windings
  \pst@getcoor{#1}\pst@tempA
  \pst@getcoor{#2}\pst@tempB
  \begin@OpenObj
  \addto@pscode{
    \pst@tempA\space \axoyo add exch \axoxo add exch 
    \pst@tempB\space \axoyo add exch \axoxo add exch 
    \psk@feyn@amplitude\space %\pst@number\psunit div 
    \psk@feyn@windings
    tx@FeynDict begin zigzag end 
  }%
  \end@OpenObj
  \ignorespaces
}
%
\def\psPhotonArc{\pst@object{psPhotonArc}}
\def\psPhotonArc@i(#1)(#2,#3){%   Draws a photon on an arc segment. start angle and target angle are (#2,#3)
  \pst@getcoor{#1}\pst@tempA
  \begin@OpenObj
  \addto@pscode{
    \pst@tempA\space \axoyo add exch \axoxo add exch 
    \psk@feyn@radius
    #2 #3 
    \psk@feyn@amplitude\space %\pst@number\psunit div 
    \psk@feyn@windings
    tx@FeynDict begin photonarc end 
  }%
  \end@OpenObj
  \ignorespaces
}
%
\def\psGluonArc{\pst@object{psGluonArc}}
\def\psGluonArc@i(#1)(#2,#3){%
%
%   Draws a gluon on an arc segment. The center of the curve is at (1,2)
%   The radius, start angle and target angle are (#2,#3,#4), 5 is the
%   amplitude of the gluon, and 6 is the number of windings.
%New \psGluonArc[options](Coor)(phi1,\phi2)
  \pst@getcoor{#1}\pst@tempA
  \begin@OpenObj
  \addto@pscode{
    \pst@tempA\space \axoyo add exch \axoxo add exch translate
    \psk@feyn@radius 
    #2 #3 % start angle end angle
    \psk@feyn@amplitude\space %\pst@number\psunit div 
    \psk@feyn@windings
    tx@FeynDict begin gluearc end 
  }%
  \end@OpenObj
  \ignorespaces
}
%
\def\psArrowArc{\pst@object{psArrowArc}}%   Draws an arc segment with an arrow in it.
\def\psArrowArc@i(#1)(#2,#3){%
  \pst@getcoor{#1}\pst@tempA
  \begin@OpenObj
  \addto@pscode{
    \pst@tempA\space \axoyo add exch \axoxo add exch 
    \psk@feyn@radius\space %\pst@number\psrunit div 
    #2 #3
    tx@FeynDict begin arrowarc end 
  }%
  \end@OpenObj
  \ignorespaces
}
%
\def\psLongArrowArc{\pst@object{psLongArrowArc}}
\def\psLongArrowArc@i(#1)(#2,#3){%  Draws an arc segment with an arrow at its end. 
%   The arc segment runs anticlockwise
  \begingroup
  \use@keep@par
  \psarc(#1){\psk@feyn@radius pt}{#2}{#3}%
  \endgroup
  \pst@getcoor{#1}\pst@tempA
  \begin@OpenObj
  \addto@pscode{
    \pst@tempA\space \axoyo add exch \axoxo add exch 
    \psk@feyn@radius
    #2 #3 
    tx@FeynDict begin longarrowarc end 
  }%
  \end@OpenObj
  \ignorespaces
}
%
\def\DashArrowArc(#1,#2)(#3,#4,#5)#6{
%
%   Draws a dashed arc segment with an arrow in it. The center of the curve
%   is at (1,2).
%   The radius, start angle and target angle are (#3,#4,#5).
%   The arc segment runs anticlockwise
%
\put(\axoxoff,\axoyoff){\special{" tx@FeynDict begin \axocolor #1 \axoxo add #2 \axoyo add #3
 #4 #5 #6 \axowidth \axoscale dasharrowarc end showpage}}
}
%
\def\psArrowArcn{\pst@object{psArrowArcn}}%   Draws an arc segment with an arrow in it.
\def\psArrowArcn@i(#1)(#2,#3){%
  \pst@getcoor{#1}\pst@tempA
  \begin@OpenObj
  \addto@pscode{
    \pst@tempA\space \axoyo add exch \axoxo add exch 
    \psk@feyn@radius\space \pst@number\psrunit div 
    #2 #3
    tx@FeynDict begin arrowarcn end 
  }%
  \end@OpenObj
  \ignorespaces
}
%
\def\LongArrowArcn(#1,#2)(#3,#4,#5){
%
%   Draws an arc segment with an arrow at the end. The center of the curve
%   is at (1,2).
%   The radius, start angle and target angle are (#3,#4,#5).
%   The arc segment runs clockwise
%
\put(\axoxoff,\axoyoff){\special{" tx@FeynDict begin \axocolor #1 \axoxo add #2 \axoyo add #3
 #4 #5 \axowidth \axoscale longarrowarcn end showpage}}
}
%
\def\DashArrowArcn(#1,#2)(#3,#4,#5)#6{
%
%   Draws a dashed arc segment with an arrow in it. The center of the curve
%   is at (1,2).
%   The radius, start angle and target angle are (#3,#4,#5).
%   The arc segment runs clockwise
%
\put(\axoxoff,\axoyoff){\special{" tx@FeynDict begin \axocolor #1 \axoxo add #2 \axoyo add #3
 #4 #5 #6 \axowidth \axoscale dasharrowarcn end showpage}}
}
%
\def\psArrowLine{\pst@object{psArrowLine}}
\def\psArrowLine@i(#1)(#2){% Draws a line with an arrow in it from (x1,y1) to (x2,y2)
  \begingroup
  \use@keep@par
  \psline(#1)(#2)%
  \endgroup
  \pst@getcoor{#1}\pst@tempA
  \pst@getcoor{#2}\pst@tempB
  \begin@OpenObj
  \addto@pscode{
    \pst@tempA\space \axoyo add exch \axoxo add exch %\tx@UserCoor
    \pst@tempB\space \axoyo add exch \axoxo add exch %\tx@UserCoor
    tx@FeynDict begin arrowline end 
  }%
  \end@OpenObj
  \ignorespaces
}
%
\def\LongArrow(#1,#2)(#3,#4){
%
%   Draws a line with an arrow at the end from (x1,y1) to (x2,y2)
%
\put(\axoxoff,\axoyoff){\special{" tx@FeynDict begin \axocolor #1 \axoxo add #2 \axoyo add #3
 \axoxo add #4 \axoyo add \axowidth \axoscale longarrow end showpage}}
}
%
\def\DashArrowLine(#1,#2)(#3,#4)#5{
%
%   Draws a dashed line with an arrow in it from (x1,y1) to (x2,y2)
%   The size of the dashes is given by the fifth argument.
%
\put(\axoxoff,\axoyoff){\special{" tx@FeynDict begin \axocolor #1 \axoxo add #2 \axoyo add #3
 \axoxo add #4 \axoyo add #5 \axowidth \axoscale dasharrowline end showpage}}
}
%
\def\psCArc{\pst@object{psCArc}}
\def\psCArc@i(#1)(#2,#3){% Draws an arc segment. The center of the curve is at .
 %\axocolor #1 \axoxo add #2 \axoyo add #3 #4 #5 \axowidth \axoscale carc end showpage
  \pst@getcoor{#1}\pst@tempA
  \begin@OpenObj
  \addto@pscode{
    \pst@tempA\space \axoyo add exch \axoxo add exch 
    \psk@feyn@radius\space %\pst@number\psrunit div 
    #2 #3
    tx@FeynDict begin carc end 
  }%
  \end@OpenObj
  \ignorespaces
}
%
\let\psText\rput
%
\def\psBCirc{\pst@object{psBCirc}}
\def\psBCirc@i(#1)#2{\begingroup\use@par\pscircle[fillstyle=solid,fillcolor=white](#1){#2}\endgroup}%
%   Draws a circle at (1,2) and radius 3 that is blanked out.
%
\def\psGCirc{\pst@object{psGCirc}}% fill the circle with a gray scale 
\def\psGCirc@i(#1)#2#3{{\use@par\pscircle[fillstyle=solid,fillcolor={[gray]#3}](#1){#2}}}%
%
\def\psCCirc{\pst@object{psCCirc}}% #3 is the color of the circle, #4 the color of the contents
\def\psCCirc@i(#1)#2#3#4{\begingroup\use@par\pscircle[linecolor=#3,fillstyle=solid,fillcolor=#4](#1){#2}\endgroup}
%
\def\psPText{\@ifnextchar[\psPText@i{\psPText@i[c]}}
\def\psPText@i[#1](#2)(#3)#4{%
%    \definecolor{temp@color}{gray}{#3}%
    \rput[#1]{#3}(#2){\shortstack{#4}}%
%    \rput[#1](#2){\textcolor{temp@color}{\shortstack{#4}}}%
}
%
\def\psLogAxis{\pst@object{psLogAxis}}
%   LogAxis(x1,y1)(x2,y2)(num_logs,hashsize,offset)
\def\psLogAxis@i(#1)(#2)(#3,#4,#5){%
%   The line is from (x1,y1) to (x2,y2) and the marks are on the left side
%   when hashsize is positive, and right when it is negative.
%   num_logs is the number of orders of magnitude and offset is the number
%   at which one starts at (x1,y1) (like if offset=2 we start at 2)
%   When offset is 0 we start at 1. Width is the linewidth.
  \pst@getcoor{#1}\pst@tempA
  \pst@getcoor{#2}\pst@tempB
  \begin@OpenObj
  \addto@pscode{
    \pst@tempA\space \axoyo add exch \axoxo add exch 
    \pst@tempB\space \axoyo add exch \axoxo add exch 
    #3 #4 #5 
    tx@FeynDict begin logaxis end 
  }%
  \end@OpenObj
  \ignorespaces
}
%
\def\psLinAxis{\pst@object{psLinAxis}}
%   LinAxis(x1,y1)(x2,y2)(num_decs,per_dec,hashsize,offset)
\def\psLinAxis@i(#1)(#2)(#3,#4,#5,#6){%
%   The line is from (x1,y1) to (x2,y2) and the marks are on the left side
%   when hashsize is positive, and right when it is negative.
%   num_decs is the number of accented marks, per_dec the number of
%   divisions between them and offset is the number
%   at which one starts at (x1,y1) (like if offset=2 we start at the second
%   small mark) Width is the linewidth.
  \pst@getcoor{#1}\pst@tempA
  \pst@getcoor{#2}\pst@tempB
  \begin@OpenObj
  \addto@pscode{
    \pst@tempA\space \axoyo add exch \axoxo add exch 
    \pst@tempB\space \axoyo add exch \axoxo add exch 
    #3 #4 #5 #6 
    tx@FeynDict begin linaxis end 
  }%
  \end@OpenObj
  \ignorespaces
}
%
\def\psBText{\pst@object{psBText}}%   Draws a box with the center at (x1,y1) and postscript text in it.
\def\psBText@i(#1)#2{\begingroup\use@par
  \rput(#1){\psframebox[fillstyle=solid,fillcolor=white]{\shortstack{#2}}}%
\endgroup}
%
\def\psGText{\pst@object{psGText}}%   The color of the background is in #2
\def\psCText@i(#1)#2#3{\begingroup\use@par
    \rput(#1){\psframebox[fillcolor={[gray]#2},fillstyle=solid]{\shortstack{#3}}}%
  \endgroup}
%
\def\psCText{\pst@object{psCText}}%  The color of box and text is in #2
\def\psCText@i(#1)#2#3#4{\begingroup\use@par
    \rput(#1){\psframebox[linecolor=#2,fillcolor=#3,fillstyle=solid]{\shortstack{#4}}}%
  \endgroup}
%
\catcode`\@=\PstAtCode\relax
%
%% END: pst-feyn.tex
\endinput