%%%
% Radar
%%%
\setKVdefault[ClesRadar]{Rayon=3cm,Reference=20,MoyenneClasse=false,Disciplines=false,Pas=5}

\newtoks\toklisteradara%pour la moyenne de l'\'el\`eve
\newtoks\toklisteradarb%pour la discipline
\newtoks\toklisteradarc%pour la moyenne de classe

\def\UpdateRadara#1/#2/#3\nil{\addtotok\toklisteradara{#1,}}
\def\UpdateRadarb#1/#2/#3\nil{\addtotok\toklisteradarb{"#2",}}
\def\UpdateRadarc#1/#2/#3\nil{\addtotok\toklisteradarc{#3,}}

\newcommand\MPRadar[6]{%
  \ifluatex
  \mplibforcehmode
  \begin{mplibcode}
    pair O;
    O=(0,0);
    path cc;
    cc=cercles(O,#1);
    %%etiquettage des disciplines
    n:=0;%compter le nombre de disciplines
    for p_=#2:
    n:=n+1;
    endfor;
    for k=1 upto n:
    N[k]=k*(360/n);
    trace segment(O,pointarc(cc,N[k]));% dashed evenly;
    endfor;
    p:=0;
    for p_=#2:
    p:=p+1;
    if (N[p]<90) or (N[p]=90):
    label.urt(TEX(p_),1.025[O,pointarc(cc,N[p])]);
    fi;
    if ((N[p]>90) and (N[p]<180)) or (N[p]=180):
    label.ulft(TEX(p_),1.025[O,pointarc(cc,N[p])]);
    fi;
    if (N[p]>180) and (N[p]<270):
    label.llft(TEX(p_),1.025[O,pointarc(cc,N[p])]);
    fi;
    if (N[p]>270) or (N[p]=270):
    label.lrt(TEX(p_),1.025[O,pointarc(cc,N[p])]);
    fi;
    endfor;
    % trac\'e des pas:
    pas=#4/#3;
    for k=1 upto pas-1:
    trace (k/pas)[O,pointarc(cc,N[1])] for l=2 upto n: --(k/pas)[O,pointarc(cc,N[l])] endfor
    --cycle dashed evenly withcolor 0.5white;
    endfor;
    trace pointarc(cc,N[1]) for l=2 upto n: --pointarc(cc,N[l]) endfor
    --cycle;
    % etiquettage des pas
    dotlabel.urt(TEX("\tiny"&decimal(#4)),pointarc(cc,0));
    dotlabel.urt(TEX("\tiny"&decimal(#3)),(1/pas)[O,pointarc(cc,0)]);
    % trac\'e des r\'esultats \'el\`eves
    pair El[];
    el=0;
    for p_=#5:
    el:=el+1;
    El[el]=(p_/#4)[O,pointarc(cc,N[el])];
    endfor;
    trace El[1] for p=2 upto n:--El[p] endfor --cycle withpen
    pencircle scaled 1.5 withcolor blue;
    % trac\'e des r\'esultats classe
    pair Cl[];
    cl=0;
    for p_=#6:
    cl:=cl+1;
    Cl[cl]=(p_/#4)[O,pointarc(cc,N[cl])];
    endfor;
    trace Cl[1] for p=2 upto n:--Cl[p] endfor --cycle withcolor rouge;
  \end{mplibcode}
  \else
  \begin{mpost}
    pair O;
    O=(0,0);
    path cc;
    cc=cercles(O,#1);
    %%etiquettage des disciplines
    n:=0;%compter le nombre de disciplines
    for p_=#2:
    n:=n+1;
    endfor;
    for k=1 upto n:
    N[k]=k*(360/n);
    trace segment(O,pointarc(cc,N[k]));% dashed evenly;
    endfor;
    p:=0;
    for p_=#2:
    p:=p+1;
    if (N[p]<90) or (N[p]=90):
    label.urt(TEX(p_),1.025[O,pointarc(cc,N[p])]);
    fi;
    if ((N[p]>90) and (N[p]<180)) or (N[p]=180):
    label.ulft(TEX(p_),1.025[O,pointarc(cc,N[p])]);
    fi;
    if (N[p]>180) and (N[p]<270):
    label.llft(TEX(p_),1.025[O,pointarc(cc,N[p])]);
    fi;
    if (N[p]>270) or (N[p]=270):
    label.lrt(TEX(p_),1.025[O,pointarc(cc,N[p])]);
    fi;
    endfor;
    % trac\'e des pas:
    pas=#4/#3;
    for k=1 upto pas-1:
    trace (k/pas)[O,pointarc(cc,N[1])] for l=2 upto n: --(k/pas)[O,pointarc(cc,N[l])] endfor
    --cycle dashed evenly withcolor 0.5white;
    endfor;
    trace pointarc(cc,N[1]) for l=2 upto n: --pointarc(cc,N[l]) endfor
    --cycle;
    % etiquettage des pas
    dotlabel.top(LATEX("\noexpand\tiny"&decimal(#4)&"") rotated -90,pointarc(cc,0));
    dotlabel.urt(LATEX("\noexpand\tiny"&decimal(#3)&""),(1/pas)[O,pointarc(cc,0)]);
    % trac\'e des r\'esultats \'el\`eves
    pair El[];
    el=0;
    for p_=#5:
    el:=el+1;
    El[el]=(p_/#4)[O,pointarc(cc,N[el])];
    endfor;
    trace El[1] for p=2 upto n:--El[p] endfor --cycle withpen
    pencircle scaled 1.5 withcolor blue;
    % trac\'e des r\'esultats classe
    pair Cl[];
    cl=0;
    for p_=#6:
    cl:=cl+1;
    Cl[cl]=(p_/#4)[O,pointarc(cc,N[cl])];
    endfor;
    trace Cl[1] for p=2 upto n:--Cl[p] endfor --cycle withcolor rouge;
  \end{mpost}
  \fi
}

\newcommand\Radar[2][]{%
  % 1 les param\`etres
  % 2 la r\'epartition des notes
  \useKVdefault[ClesRadar]%
  \setKV[ClesRadar]{#1}%
  \ignoreemptyitems%
  \setsepchar[*]{,}%
  \readlist*\ListeRadar{#2}%
  \toklisteradara{}%
  \foreachitem\compteur\in\ListeRadar{\expandafter\UpdateRadara\compteur\nil}%
  \ifboolKV[ClesRadar]{Disciplines}{}{%
    \toklisteradarb{}%
    \foreachitem\compteur\in\ListeRadar{\expandafter\UpdateRadarb\compteur\nil}%
  }%
  \ifboolKV[ClesRadar]{MoyenneClasse}{}{%
    \toklisteradarc{}%
    \foreachitem\compteur\in\ListeRadar{\expandafter\UpdateRadarc\compteur\nil}%
  }%
  \MPRadar{\useKV[ClesRadar]{Rayon}}{\the\toklisteradarb}{\useKV[ClesRadar]{Pas}}{\useKV[ClesRadar]{Reference}}{\the\toklisteradara}{\the\toklisteradarc}%
}%