tkz-graph.sty

    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    %                                                               %
    %     tk-graphes.sty    encodage : utf8                         %
    %                                                               %
    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    %                                                               %
    %           Créé par Alain Matthes le 09-10-2007.               %
    %        contribution :  Rafael Villarroel 2007   (RV)          %
    %                                                               %
    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%% Objet :  Création de graphes
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{tkz-graph}[18/11/2008 v 2.7d base for graphs]
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\RequirePackage{etex}
\RequirePackage{ifthen}
\RequirePackage{xkeyval}[2005/11/25]
\RequirePackage{tikz}[2008/01/15]
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcounter{tkzb@ca}
\newcounter{tkzb@cb}
\newcounter{tkzb@cc}
\newcounter{tkzb@v}
\newcounter{tkzb@cd}
\newcounter{tkzb@ce}
\newcounter{tkzb@cf}
\newcounter{tkzb@temp}
\newcounter{tkzb@int}
\newcounter{tkzb@next}
\newcounter{tkzb@ta}
\newcounter{tkzb@tb}
\newdimen\node@distance
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                           Init vertex  
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\ifdefined\twoptoff
\else
\newboolean{@twopt} \setboolean{@twopt}{false} 
\newcommand*{\twoptoff}{\ifnum \catcode`\:=13 \catcode`\:=12 \setboolean{@twopt}{true} \fi}
\newcommand*{\twopton}{\if@twopt \catcode`\:=13 \setboolean{@twopt}{false}  \fi}
\fi

\ifdefined\activoff
\else
\newboolean{@activ} \setboolean{@activ}{false}%
\newcommand*{\activoff}{\ifnum\catcode`\:=13\catcode`\:=12\catcode`\!=12%
 \setboolean{@activ}{true} \fi}%
\newcommand*{\activon}{\if@activ\catcode`\:=13\catcode`\!=13%
 \setboolean{@activ}{false}  \fi}
\fi
\newcommand*{\VertexDistance}{3cm}
\newcommand*{\VertexShape}{circle}
\newcommand*{\VertexLineWidth}{1pt}
\newcommand*{\VertexLineColor}{black}
\newcommand*{\VertexLightFillColor}{white}
\newcommand*{\VertexDarkFillColor}{black}
\newcommand*{\VertexTextColor}{black}
\newcommand*{\VertexFillColor}{black}
\newcommand*{\VertexBallColor}{orange}
\newcommand*{\VertexBigMinSize}{24pt}
\newcommand*{\VertexInterMinSize}{18pt}
\newcommand*{\VertexSmallMinSize}{12pt}
\newcommand*{\VertexInnerSep}{4pt}
\newcommand*{\EdgeFillColor}{orange}
\newcommand*{\EdgeColor}{black}
\newcommand*{\EdgeDoubleDistance}{1pt}
\newcommand*{\EdgeLineWidth}{0.8pt}

\tikzset{pre/.style={<-,shorten <=1pt,>=stealth',semithick}}
\tikzset{post/.style={->,shorten <=1pt,>=stealth',semithick}}

%<––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%   Simple Vertex
%<––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\define@cmdkey [GR] {SVS} {Shape}{}
\define@cmdkey [GR] {SVS} {MinSize}{}
\define@cmdkey [GR] {SVS} {LineWidth}{}
\define@cmdkey [GR] {SVS} {LineColor}{}
\define@cmdkey [GR] {SVS} {FillColor}{}
\presetkeys    [GR] {SVS} {Shape          = \VertexShape,
                           MinSize        = \VertexSmallMinSize,
                           LineWidth      = \VertexLineWidth,
                           LineColor      = \VertexLineColor,
                           FillColor      = \VertexFillColor}{}
\newcommand*{\SetVertexSimple}[1][]{\GR@SetVertexSimple[#1]}%
\def\GR@SetVertexSimple[#1]{%
\setkeys[GR]{SVS}{#1}% 
\presetkeys[GR]{vertex}{NoLabel           = true}{}%
\tikzset{VertexStyle/.style = {draw,
                               shape          = \cmdGR@SVS@Shape,
                               color          = \cmdGR@SVS@LineColor,
                               fill           = \cmdGR@SVS@FillColor,
                               inner sep      = 0pt,
                               outer sep      = 0pt,
                               minimum size   = \cmdGR@SVS@MinSize,
                               line width     = \cmdGR@SVS@LineWidth}}}
%<––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%   Normal Vertex
%<––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\define@cmdkey [GR] {SVN} {Shape}{}
\define@cmdkey [GR] {SVN} {MinSize}{}
\define@cmdkey [GR] {SVN} {LineWidth}{}
\define@cmdkey [GR] {SVN} {LineColor}{}
\define@cmdkey [GR] {SVN} {FillColor}{}
\define@cmdkey [GR] {SVN} {TextColor}{}
\presetkeys    [GR] {SVN} {Shape              = \VertexShape,
                           MinSize            = \VertexInterMinSize,
                           LineWidth          = \VertexLineWidth,
                           LineColor          = \VertexLineColor,
                           FillColor          = \VertexLightFillColor,
                           TextColor          = \VertexTextColor}{}
\newcommand*{\SetVertexNormal}[1][]{\GR@SetVertexNormal[#1]}%
\def\GR@SetVertexNormal[#1]{%
\setkeys[GR]{SVN}{#1}% 
\tikzset{VertexStyle/.style = {shape          = \cmdGR@SVN@Shape,
                               minimum size   = \cmdGR@SVN@MinSize,
                               line width     = \cmdGR@SVN@LineWidth,
                               color          = \cmdGR@SVN@LineColor,
                               fill           = \cmdGR@SVN@FillColor,
                               text           = \cmdGR@SVN@TextColor,
                               draw}}}
\SetVertexNormal% default
%<––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\define@choicekey*[GR]{init}{vstyle}[\val\nr]{Simple,
                                              Classic,
                                              Normal,
                                              Shade,
                                              Dijkstra,
                                              Welsh,
                                              Art}{%
\edef\GR@init@vstyle{\nr}
\ifcase\nr\relax
% Simple
\presetkeys [GR] {vertex} {NoLabel            = true}{}%
\tikzset{VertexStyle/.style = {draw,
                               shape          = \VertexShape,
                               color          = \VertexLineColor,
                               fill           = \VertexDarkFillColor,
                               inner sep      = 0pt,
                               outer sep      = 0.5\pgflinewidth,
                               text           = \VertexTextColor,
                               minimum size   = \VertexSmallMinSize,
                               line width     = \VertexLineWidth}}
\tikzset{EdgeStyle/.style   = {line width = \EdgeLineWidth,\EdgeColor}}
\tikzset{LabelStyle/.style={}}
% Classic
\or
\presetkeys [GR] {vertex} {LabelOut           = true}{}%
\tikzset{VertexStyle/.style = {draw,
                               shape          = \VertexShape,
                               color          = \VertexLineColor,
                               fill           = \VertexDarkFillColor,
                               inner sep      = 0pt,
                               outer sep      = 0.5\pgflinewidth,
                               text           = \VertexTextColor,
                               minimum size   = \VertexSmallMinSize,
                               line width     = \VertexLineWidth}}
\tikzset{EdgeStyle/.style   = {line width     = \EdgeLineWidth,\EdgeColor}}
\tikzset{LabelStyle/.style={}}
% Normal 
\or
\presetkeys [GR] {vertex} {LabelOut           = false}{}%
\tikzset{VertexStyle/.style = {draw,
                               shape          = \VertexShape,
                               minimum size   = \VertexInterMinSize,
                               line width     = \VertexLineWidth,
                               color          = \VertexLineColor,
                               outer sep      = 0.5\pgflinewidth,
                               fill           = \VertexLightFillColor,
                               text           = \VertexTextColor}}
\tikzset{EdgeStyle/.style   = {line width     = \EdgeLineWidth,\EdgeColor}}
\tikzset{LabelStyle/.style={}}
% Shade
\or
\presetkeys [GR] {vertex} {LabelOut           = false}{}%
\tikzset{VertexStyle/.style = {shape          = \VertexShape,
                               ball color     = \VertexBallColor,
                               text           = \VertexTextColor,
                               inner sep      = 2pt,
                               outer sep      = 0pt,
                               minimum size   = \VertexBigMinSize}}
\tikzset{EdgeStyle/.style   = {line width     = \EdgeLineWidth,\EdgeColor,
                               double          = \EdgeFillColor,
                               double distance = \EdgeDoubleDistance}} 
\tikzset{LabelStyle/.style={}}
% Dijkstra
\or
\presetkeys [GR] {vertex} {LabelOut           = false}{}%
\tikzset{VertexStyle/.style = {draw,
                               shape          = \VertexShape,
                               color          = \VertexLineColor,
                               fill           = \VertexLightFillColor,
                               inner sep      = 0pt,
                               outer sep      = 0.5\pgflinewidth,
                               text           = \VertexTextColor,
                               minimum size   = \VertexInterMinSize,
                               line width     = \VertexLineWidth}}
\tikzset{EdgeStyle/.style   = {line width     = \EdgeLineWidth,\EdgeColor}}
\tikzset{LabelStyle/.style={}}
% Welsh
\or
\presetkeys [GR] {vertex} {LabelOut           = true}{}%
\tikzset{VertexStyle/.style = {draw,
                               shape          = \VertexShape,
                               color          = \VertexLineColor,
                               fill           = \VertexLightFillColor,
                               inner sep      = 0pt,
                               outer sep      = 0pt,
                               text           = \VertexTextColor,
                               minimum size   = \VertexSmallMinSize,
                               line width     = \VertexLineWidth}}
\tikzset{EdgeStyle/.style   = {line width     = \EdgeLineWidth,\EdgeColor}}
\tikzset{LabelStyle/.style={}}
% Art
\or
\presetkeys [GR] {vertex} {NoLabel            = true}{}%
\tikzset{VertexStyle/.style = {shape          = \VertexShape,
                               ball color     = \VertexBallColor,
                               text           = \VertexTextColor,
                               inner sep      = \VertexInnerSep,
                               outer sep      = 0pt}}
\tikzset{EdgeStyle/.style   = {line width     =\EdgeLineWidth,\EdgeFillColor}} 
\tikzset{LabelStyle/.style  = {}}
\fi%
}

\presetkeys    [GR] {init} {vstyle     = Normal}{} 

\newcommand*{\GraphInit}[1][]{\GR@GraphInit[#1]}%
\def\GR@GraphInit[#1]{\setkeys[GR]{init}{#1}}

%<––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\SetVertexNoLabel}{%
    \presetkeys [GR] {vertex} {NoLabel = true}{}%
}
% add  RV
\newcommand*{\SetVertexLabel}{%
   \presetkeys [GR] {vertex} {NoLabel = false}{}%
}
%<––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\SetVertexLabelOut}{%
    \presetkeys [GR] {vertex} {LabelOut = true}{}%
}
\newcommand*{\SetVertexLabelIn}{%
    \presetkeys [GR] {vertex} {LabelOut = false}{}%
} 
\newcommand*{\SetVertexMath}{%
    \presetkeys [GR] {vertex} {Math = true}{}%
    \presetkeys [GR] {cl} {Math = true}{}%
}
\newcommand*{\SetVertexNoMath}{%
    \presetkeys [GR] {vertex} {Math = false}{}%
    \presetkeys [GR] {cl} {Math = false}{}%
} 
% %<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
% \tikzstyle{every node}        = [node distance  = 2cm,
%                                  line width     = 0.8pt]%
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                          Init    SetUpVertex
% todo math
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\define@cmdkey  [GR] {SUV} {Lpos}{}
\define@cmdkey  [GR] {SUV} {Ldist}{}
\define@cmdkey  [GR] {SUV} {style}{}
\define@boolkey [GR] {SUV} {NoLabel} [true]{}
\define@boolkey [GR] {SUV} {LabelOut}[true]{}
\define@boolkey [GR] {SUV} {Math}[true]{}
\presetkeys     [GR] {SUV} {Ldist     = 0cm,%
                            Lpos      = 0,%
                            style     = {},%
                            LabelOut  = false,%
                            NoLabel   = false,
                            Math      = false}{}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                             SetUpVertex
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\SetUpVertex}[1][]{\GR@SetUpVertex[#1]}%
\def\GR@SetUpVertex[#1]{%
\setkeys[GR]{SUV}{#1}%
\presetkeys     [GR] {vertex} {Lpos     = \cmdGR@SUV@Lpos,%
                               Ldist    = \cmdGR@SUV@Ldist}{}%
\ifGR@SUV@NoLabel%
    \presetkeys [GR] {vertex} {NoLabel  = true}{}%
\fi%
\ifGR@SUV@LabelOut%
    \presetkeys [GR] {vertex} {LabelOut = true}{}%
\fi%
\ifGR@SUV@Math%
    \presetkeys [GR] {vertex} {Math = true}{}%
\fi%
}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                             Colors
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\SetGraphShadeColor}[3]{%
  \tikzset{VertexStyle/.append style = {ball color=#1}}
  \tikzset{EdgeStyle/.append style   = {color=#2,double=#3}}
}
\newcommand*{\SetGraphArtColor}[2]{%
  \tikzset{VertexStyle/.append style = {ball color=#1}}
  \tikzset{EdgeStyle/.append style   = {color=#2}}
}
\newcommand*{\SetGraphColor}[2]{%
  \tikzset{VertexStyle/.append style = {fill=#1}}
  \tikzset{EdgeStyle/.append style   = {color=#2}}
}
\newcommand*{\AddVertexColor}[2]{%
\begingroup
  \tikzset{VertexStyle/.append style  = {fill=#1}}
  \foreach \v in {#2}
    {\Vertex[Node,NoLabel]{\v}}
\endgroup
}

%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                           Init Vertex
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\define@boolkey [GR] {vertex} {empty}[true]{}
\define@cmdkey  [GR] {vertex} {x}{}
\define@cmdkey  [GR] {vertex} {y}{}
\define@cmdkey  [GR] {vertex} {a}{}
\define@cmdkey  [GR] {vertex} {d}{}
\define@boolkey [GR] {vertex} {Node}[true]{}
\define@cmdkey  [GR] {vertex} {dir}{}
\define@cmdkey  [GR] {vertex} {style}{}
\define@cmdkey  [GR] {vertex} {position}{}
\define@cmdkey  [GR] {vertex} {L}{}
\define@cmdkey  [GR] {vertex} {Lpos}{}
\define@cmdkey  [GR] {vertex} {Ldist}{}
\define@boolkey [GR] {vertex} {NoLabel}[true]{}
\define@boolkey [GR] {vertex} {Math}[true]{}
\define@boolkey [GR] {vertex} {LabelOut}[true]{}
\presetkeys     [GR] {vertex} {Node     = false,
                               NoLabel  = false,
                               LabelOut = false,
                               empty    = false,
                               Math     = false,
                               x        = {},
                               y        = {},
                               a        = {},
                               d        = {},
                               dir      = \EA,
                               position = {},
                               style    = {},
                               L        = {},
                               Ldist    = 0cm,
                               Lpos     = 0}{}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                                  Vertex
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\Vertex}[1][]{\@vertex[#1]}%
\def\@vertex[#1]#2{%
    \setkeys[GR]{vertex}{#1}%
    \@@vertex{#2}%
}
% coord rect todo coord polar and pos relative
\def\@@vertex#1{%
         \def\nstyle{VertexStyle}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\ifGR@vertex@Node%
   \pgfextractx{\pgf@x}{\pgfpointanchor{#1}{center}}
   \pgfextracty{\pgf@y}{\pgfpointanchor{#1}{center}}
   \edef\cmdGR@vertex@x{\pgf@x}
   \edef\cmdGR@vertex@y{\pgf@y}
\fi%
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\ifGR@vertex@empty%
   \begin{scope}
      \ifthenelse{\not\equal{\cmdGR@vertex@x}{}}{%
           \protected@edef\@tempa{%
               \noexpand\node[inner sep = 0pt](#1)%
                  at (\cmdGR@vertex@x,\cmdGR@vertex@y){}}%
           \@tempa;}{%
       \ifthenelse{\not\equal{\cmdGR@vertex@d}{}}{%
           \protected@edef\@tempa{%
               \noexpand\node[inner sep = 0pt](#1)%
                  at (\cmdGR@vertex@a:\cmdGR@vertex@d){}}%
           \@tempa;}{%
           \protected@edef\@tempa{%
               \noexpand \node[inner sep = 0pt](#1)%
                  [\cmdGR@vertex@position]{}}%
           \@tempa;}}%
    \end{scope}
\else
 \begin{scope}[label distance = \cmdGR@vertex@Ldist]
  \ifGR@vertex@NoLabel
       \def\vertex@Label{}%
       \def\cmdGR@vertex@L{}%
       \def\vertex@Name{}
  \else%
     \ifGR@vertex@Math
     \ifthenelse{\equal{\cmdGR@vertex@L}{}}{%
       \def\vertex@Name{$#1$}}{\def\vertex@Name{$\cmdGR@vertex@L$}}
    \else
       \ifthenelse{\equal{\cmdGR@vertex@L}{}}{%
       \def\vertex@Name{#1}}{\def\vertex@Name{\cmdGR@vertex@L}}
    \fi%
      \ifGR@vertex@LabelOut%
        \def\nstyle{VertexStyle,%
                    label=\cmdGR@vertex@Lpos:\vertex@Name}
        \def\vertex@Label{}
      \else%
      \def\vertex@Label{\vertex@Name}
      \fi
  \fi
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
  \ifthenelse{\not\equal{\cmdGR@vertex@x}{}}{%
    \protected@edef\@tempa{%
      \noexpand\node[outer sep=0pt,\nstyle,\cmdGR@vertex@style](#1)
                 at (\cmdGR@vertex@x,\cmdGR@vertex@y){%
      \noexpand\vertex@Label}}%
      \@tempa;%
      }{%
      \ifthenelse{\not\equal{\cmdGR@vertex@d}{}}{%
        \protected@edef\@tempa{%
        \noexpand\node[outer sep=0pt,\nstyle,\cmdGR@vertex@style](#1)
                       at (\cmdGR@vertex@a:\cmdGR@vertex@d){%
        \noexpand\vertex@Label}}%
        \@tempa;%
      }{%
        \protected@edef\@tempa{%
        \noexpand\node[outer sep=0pt,\nstyle,\cmdGR@vertex@style](#1)%
                      [\cmdGR@vertex@position]{%
        \noexpand\vertex@Label}}%
       \@tempa;}}%
  \end{scope}
\fi%
}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                          End of  Vertex
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>

%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                          EA east of #2
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\EA}[1][]{\@droite[#1]}%
\def\@droite[#1](#2)#3{% 
    \setkeys[GR]{vertex}{#1}%
\let\temp@position\cmdGR@vertex@position
\def\cmdGR@vertex@position{\temp@position,right of=#2}
    \@@vertex{#3}}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                         WE west of #2
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\WE}[1][]{\@gauche[#1]}%
\def\@gauche[#1](#2)#3{% 
    \setkeys[GR]{vertex}{#1}%
\def\cmdGR@vertex@position{left of=#2}
    \@@vertex{#3}%
}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                       NO north of #2
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\NO}[1][]{\@haut[#1]}%
\def\@haut[#1](#2)#3{% 
    \setkeys[GR]{vertex}{#1}%
\def\cmdGR@vertex@position{above of=#2}
    \@@vertex{#3}%
}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                        SO south of #2
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\SO}[1][]{\@bas[#1]}%
\def\@bas[#1](#2)#3{% 
    \setkeys[GR]{vertex}{#1}%
\def\cmdGR@vertex@position{below of=#2}
    \@@vertex{#3}}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                     NOEA north east of #2
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\NOEA}[1][]{\@hautdroite[#1]}%
\def\@hautdroite[#1](#2)#3{% 
    \setkeys[GR]{vertex}{#1}%
\def\cmdGR@vertex@position{above right of=#2}
    \@@vertex{#3}}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                      NOWE  north west of #2
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\NOWE}[1][]{\@hautgauche[#1]}%
\def\@hautgauche[#1](#2)#3{% 
    \setkeys[GR]{vertex}{#1}%
\def\cmdGR@vertex@position{above left of=#2}
    \@@vertex{#3}}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                     SOEA south east of #2
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\SOEA}[1][]{\@basdroite[#1]}%
\def\@basdroite[#1](#2)#3{% 
    \setkeys[GR]{vertex}{#1}%
\def\cmdGR@vertex@position{below right of=#2}
    \@@vertex{#3}}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                    SOWE south west of #2
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\SOWE}[1][]{\@basgauche[#1]}%
\def\@basgauche[#1](#2)#3{% 
    \setkeys[GR]{vertex}{#1}%
\def\cmdGR@vertex@position{below left of=#2}
    \@@vertex{#3}}
    
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                               Vertices
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\Vertices}{\@ifstar%
                              \VerticesStar%
                              \VerticesNoStar}
\newcommand*{\VerticesNoStar}[1][]{\Vertices@NoStar[#1]}%
\def\Vertices@NoStar[#1]#2{%
\setkeys[GR]{vertex}{#1}%
\begingroup%
   \setcounter{tkzb@temp}{0}
   \foreach \fin in {#2}{%
       \ifthenelse{\value{tkzb@temp}=0}{%
       \global\let\deb\fin
       \Vertex[#1]{\fin}
       \stepcounter{tkzb@temp}
       }{%
       \cmdGR@vertex@dir[#1,x={},y={},Node=false](\deb){\fin}
       \global\let\deb\fin
       }}%
\endgroup%
}
\newcommand*{\VerticesStar}[1][]{\Vertices@Star[#1]}%
\def\Vertices@Star[#1]#2#3{%
\setkeys[GR]{vertex}{#1}%
   \setcounter{tkzb@temp}{0}
   \@for\liste:=#3\do{%
     \stepcounter{tkzb@temp}%
     \global\expandafter\let\csname label@\alph{tkzb@temp}\endcsname\liste}
\begingroup%
  \ifthenelse{\equal{#2}{square}}{%
   \Vertex[#1,Lpos=-135]{\label@a}
   \EA[#1,Lpos=-45,x={},y={},Node=false](\label@a){\label@b}
   \NO[#1,Lpos=45, x={},y={},Node=false](\label@b){\label@c}
   \WE[#1,Lpos=135,x={},y={},Node=false](\label@c){\label@d}}{%
 \ifthenelse{\equal{#2}{tr1}}{%
   \Vertex[#1]{\label@a}
   \EA[#1,x={},y={},Node=false](\label@a){\label@b}
   \NO[#1,x={},y={},Node=false](\label@b){\label@c}}{%
 \ifthenelse{\equal{#2}{tr2}}{%
   \Vertex[#1]{\label@a}
   \NO[#1,x={},y={},Node=false](\label@a){\label@b}
   \EA[#1,x={},y={},Node=false](\label@b){\label@c}}{%
 \ifthenelse{\equal{#2}{tr3}}{%
   \Vertex[#1]{\label@a}
   \NO[#1,x={},y={},Node=false](\label@a){\label@b}
   \WE[#1,x={},y={},Node=false](\label@b){\label@c}}{%
 \ifthenelse{\equal{#2}{tr4}}{%
   \Vertex[#1]{\label@a}
   \WE[#1,x={},y={},Node=false](\label@a){\label@b}
   \NO[#1,x={},y={},Node=false](\label@b){\label@c}}{%
 \ifthenelse{\equal{#2}{circle}}{%
  \pgfmathdivide{360}{\value{tkzb@temp}}%
  \global\let\gr@angle\pgfmathresult%
  \setcounter{tkzb@temp}{0}
  \foreach \lab in {#3}{%
    \pgfmathmultiply{\gr@angle}{\thetkzb@temp}%
    \let\gr@newangle\pgfmathresult%
    \pgfmathadd{\cmdGR@vertex@Lpos}{\gr@newangle}
    \let\gr@posangle\pgfmathresult%
    \Vertex[#1,
            a    = \gr@newangle,
            d    = \tikz@node@distance,
            Lpos = \gr@posangle]{\lab}
        \stepcounter{tkzb@temp}%
    }%
   }{}%
}}}}}%
\endgroup%
}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                          Edge style
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\tikzstyle{LabelStyle}=[pos=.5]
\tikzstyle{EdgeStyle} =[]
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                          Init    SetUpEdge
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\define@cmdkey [GR] {SUE} {color}{}
\define@cmdkey [GR] {SUE} {label}{}
\define@cmdkey [GR] {SUE} {labelstyle}{}
\define@cmdkey [GR] {SUE} {labeltext}{}
\define@cmdkey [GR] {SUE} {labelcolor}{}
\define@cmdkey [GR] {SUE} {style}{}
\define@cmdkey [GR] {SUE} {lw}{}
\presetkeys    [GR] {SUE} {color       = \EdgeColor,
                           lw          = \EdgeLineWidth,
                           label       = {},
                           labeltext   = black,
                           labelcolor  = white,
                           labelstyle  = {},
                           style       = {}}{}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                             SetUpEdge
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\SetUpEdge}[1][]{\@SetUpEdge[#1]}%
\def\@SetUpEdge[#1]{%
\setkeys    [GR] {SUE} {#1}%
\presetkeys [GR] {edge} {color        = \cmdGR@SUE@color,
                         lw           = \cmdGR@SUE@lw,
                         label        = \cmdGR@SUE@label,
                         labeltext    = \cmdGR@SUE@labeltext,
                         labelcolor   = \cmdGR@SUE@labelcolor,
                         labelstyle   = \cmdGR@SUE@labelstyle,
                         style        = \cmdGR@SUE@style}{}
\tikzset{LabelStyle/.style={}}
\tikzset{EdgeStyle/.style={}}}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                              Init Edge 
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\define@cmdkey [GR] {edge} {color}{}
\define@cmdkey [GR] {edge} {lw}{} 
\define@cmdkey [GR] {edge} {style}{} 
\define@cmdkey [GR] {edge} {label}{}
\define@cmdkey [GR] {edge} {labeltext}{}
\define@cmdkey [GR] {edge} {labelcolor}{}
\define@cmdkey [GR] {edge} {labelstyle}{}
\presetkeys    [GR] {edge} {style      = {pos=.5},
                            lw         = \EdgeLineWidth,  
                            label      = {},
                            labeltext  = black,
                            labelcolor = white,
                            labelstyle = {},
                            color      = \EdgeColor}{} 
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                               Edge 
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\Edge}[1][]{\@edge[#1]}%
\def\@edge[#1](#2)(#3){%
\setkeys[GR]{edge}{#1}%
   \ifthenelse{\equal{\cmdGR@edge@label}{}}{%
     \protected@edef\@tempa{%
     \noexpand   \draw[color = \cmdGR@edge@color,%
                       line width =\cmdGR@edge@lw,%
                       \cmdGR@edge@style,%
                       EdgeStyle]}\@tempa (#2) to (#3)}{%
     \protected@edef\@tempa{%
     \noexpand   \draw[color = \cmdGR@edge@color,%
                       line width =\cmdGR@edge@lw,%
                       \cmdGR@edge@style,%
                       EdgeStyle] (#2) to%
    node[fill = \cmdGR@edge@labelcolor,
         text = \cmdGR@edge@labeltext,
         \cmdGR@edge@labelstyle,LabelStyle]}\@tempa
   {\cmdGR@edge@label} (#3)}%
   ;
}

%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                               Edges
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\Edges}[1][]{\@edges[#1]}%
\def\@edges[#1](#2){%
\setkeys[GR]{edge}{#1}%
\begingroup%
   \setcounter{tkzb@temp}{0}
   \foreach \fin in {#2}{%
       \ifthenelse{\value{tkzb@temp}=0}{%
       \global\let\deb\fin
       \stepcounter{tkzb@temp}}{%
       \Edge[#1](\deb)(\fin)
       \global\let\deb\fin
       }%
   }
\endgroup%
}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                          Init  loop 
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>



\define@choicekey*[GR]{loop}{dir}[\val\nr]{WE,EA,NO,SO}{%
\ifcase\nr\relax
\tikzset{LoopStyle/.style = {in=235, out=125, distance=\cmdGR@loop@dist}}%
\or
\tikzset{LoopStyle/.style = {in= 55, out=-55, distance=\cmdGR@loop@dist}}%
\or
\tikzset{LoopStyle/.style = {in=135, out= 45, distance=\cmdGR@loop@dist}}%
\or
\tikzset{LoopStyle/.style = {in=-45, out=225, distance=\cmdGR@loop@dist}}%
\fi%
}
\define@cmdkey [GR] {loop} {color}{}
\define@cmdkey [GR] {loop} {label}{}
\define@cmdkey [GR] {loop} {labelstyle}{}
\define@cmdkey [GR] {loop} {style}{}
\define@cmdkey [GR] {loop} {dist}{}
\presetkeys    [GR] {loop} {style      = {pre,thick},%`
                            label      = {},% 
                            labelstyle = {},%
                            color      = black,%
                            dist       = 4cm,%
                            dir        = WE}{} 
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                                loop 
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\Loop}[1][]{\@loop[#1]}%
\def\@loop[#1](#2){%
\setkeys[GR]{loop}{#1}%
\protected@edef\@tempa{%
\noexpand \draw[\cmdGR@loop@color] (#2)%
  edge [LoopStyle,\cmdGR@loop@style]%
  node [LabelStyle,\cmdGR@loop@labelstyle]%
  {\cmdGR@loop@label} (#2)}\@tempa;%
}%
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                    Init   Graphes probabilistes 
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\define@cmdkey [GR] {grpb} {distance}{}
\define@cmdkey [GR] {grpb} {LposA}{}
\define@cmdkey [GR] {grpb} {LposB}{}
\define@cmdkey [GR] {grpb} {Ldist}{}
\define@cmdkey [GR] {grpb} {LoopDist}{}
\presetkeys    [GR] {grpb} {distance = 5cm,%
                            LposA    = 180,%
                            LposB    = 0,%
                            Ldist    = 0cm,%
                            LoopDist = 4cm}{} 
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                       Graphes probabilistes 
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
\newcommand*{\grProb}[7][]{%
  \setkeys[GR]{grpb}{#1}%
  \tikzset{node distance = \cmdGR@grpb@distance}
  \tikzset{LabelStyle/.append style ={pos=.5}}
  %\presetkeys [GR] {vertex} {LabelOut = true}{}%
  \Vertex[Lpos=\cmdGR@grpb@LposA,Ldist=\cmdGR@grpb@Ldist,L=#2]{grA}
  \EA[Lpos=\cmdGR@grpb@LposB,Ldist=\cmdGR@grpb@Ldist,L=#3](grA){grB}
  \Edge[style={post,bend left=60},label={$#4$},labelstyle={above}](grA)(grB)
  \Edge[style={post,bend left=60},label={$#5$},labelstyle={below}](grB)(grA)
  \Loop[dist=\cmdGR@grpb@LoopDist,dir=WE,label={$#6$},labelstyle={left}](grA)
  \Loop[dist=\cmdGR@grpb@LoopDist,dir=EA,label={$#7$},labelstyle={right}](grB)
}
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%<–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––>
%                      End   Graphes probabilistes 
%<––––––––––––––––––––––––––––––– fin –––––––––––––––––––––––––––––––––––––––>
\endinput