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%%%
% Mosaique
%%%
\setKVdefault[ClesMosaique]{Largeur=2,Hauteur=2,Solution=false,Type=1,Label,Echelle=1cm}

\newcommand\DessineMosaique[2][]{%
  \useKVdefault[ClesMosaique]%
  \setKV[ClesMosaique]{#1}%
  \ifluatex%
  \mplibforcehmode%
  \begin{mplibcode}
    u:=\useKV[ClesMosaique]{Echelle};
    Type:=\useKV[ClesMosaique]{Type};
    input PfCMosaique;
    trace if Type=1:MosaiqueUn[#2] elseif Type=2: MosaiqueDeux[#2] fi;
  \end{mplibcode}%
  \else%
  \begin{mpost}[mpsettings={u:=\useKV[ClesMosaique]{Echelle};Type:=\useKV[ClesMosaique]{Type};}]%
    input PfCMosaique;
    trace if Type=1:MosaiqueUn[#2] elseif Type=2: MosaiqueDeux[#2] fi;
  \end{mpost}%
  \fi%
}%

\newcommand\DessineMosaiqueComplet[1]{%
  \ifluatex
  \mplibforcehmode
  \begin{mplibcode}
    input PfCMosaique;
    Largeur=\useKV[ClesMosaique]{Largeur};
    Hauteur=\useKV[ClesMosaique]{Hauteur};
    Type=\useKV[ClesMosaique]{Type};
    boolean Solution,Label;
    Solution=\useKV[ClesMosaique]{Solution};
    Label=\useKV[ClesMosaique]{Label};
    pair A,B,C,D;
    A=u*(0,1);
    B-A=u*(Largeur,0);
    C-B=u*(0,-Hauteur);
    D-C=A-B;
    picture mosaique;
    path case;
    case=unitsquare scaled 1cm;
    if Type=1:
    mosaique=image(
    trace case withcolor 0.5white;
    trace (point(0) of case)--(point(2) of case) withcolor 0.75white;
    trace (point(1) of case)--(point(3) of case) withcolor 0.75white;
    trace (point(0.5) of case)--(point(2.5) of case) withcolor 0.75white;
    trace (point(1.5) of case)--(point(3.5) of case) withcolor 0.75white;
    );
    else:
    mosaique=image(
    trace case withcolor 0.5white;
    trace (point(0.5) of case)--(point(2.5) of case) withcolor 0.75white;
    trace (point(1.5) of case)--(point(3.5) of case) withcolor 0.75white;
    trace (point(0.5) of case)--(point(1.5) of case)--(point(2.5) of case)--(point(3.5) of case)--cycle withcolor 0.75white;
    );
    fi;
    if Solution:
    nbmos:=0;
    for p_=#1:
    trace if Type=1:MosaiqueUn[xpart(p_)] else: MosaiqueDeux[xpart(p_)] fi shifted(u*(nbmos mod Largeur,-(nbmos div Largeur)));
    nbmos:=nbmos+1;
    endfor;
    else:
    nbmos:=0;
    for p_=#1:
    trace mosaique shifted(u*(nbmos mod Largeur,-(nbmos div Largeur)));
    if Label:
    label(TEX("\num{"&decimal(ypart(p_))&"}"),center (mosaique  shifted(u*(nbmos mod Largeur,-(nbmos div Largeur)))));
    fi;
    nbmos:=nbmos+1;
    endfor;
    fi;
    trace polygone(A,B,C,D);
  \end{mplibcode}
  \else
  \begin{mpost}[mpsettings={Largeur=\useKV[ClesMosaique]{Largeur};Hauteur=\useKV[ClesMosaique]{Hauteur};Type=\useKV[ClesMosaique]{Type};boolean Solution,Label;Solution=\useKV[ClesMosaique]{Solution};}]
    Label=\useKV[ClesMosaique]{Label};
    input PfCMosaique;
    pair A,B,C,D;
    A=u*(0,1);
    B-A=u*(Largeur,0);
    C-B=u*(0,-Hauteur);
    D-C=A-B;
    picture mosaique;
    path case;
    case=unitsquare scaled 1cm;
    if Type=1:
    mosaique=image(
    trace case withcolor 0.5white;
    trace (point(0) of case)--(point(2) of case) withcolor 0.75white;
    trace (point(1) of case)--(point(3) of case) withcolor 0.75white;
    trace (point(0.5) of case)--(point(2.5) of case) withcolor 0.75white;
    trace (point(1.5) of case)--(point(3.5) of case) withcolor 0.75white;
    );
    else:
    mosaique=image(
    trace case withcolor 0.5white;
    trace (point(0.5) of case)--(point(2.5) of case) withcolor 0.75white;
    trace (point(1.5) of case)--(point(3.5) of case) withcolor 0.75white;
    trace (point(0.5) of case)--(point(1.5) of case)--(point(2.5) of case)--(point(3.5) of case)--cycle withcolor 0.75white;
    );
    fi;
    if Solution:
    nbmos:=0;
    for p_=#1:
    trace if Type=1:MosaiqueUn[xpart(p_)] else: MosaiqueDeux[xpart(p_)] fi shifted(u*(nbmos mod Largeur,-(nbmos div Largeur)));
    nbmos:=nbmos+1;
    endfor;
    else:
    nbmos:=0;
    for p_=#1:
    trace mosaique shifted(u*(nbmos mod Largeur,-(nbmos div Largeur)));
    if Label:
    label(LATEX("\num{"&decimal(ypart(p_))&"}"),center (mosaique  shifted(u*(nbmos mod Largeur,-(nbmos div Largeur)))));
    fi;
    nbmos:=nbmos+1;
    endfor;
    fi;
    trace polygone(A,B,C,D);
  \end{mpost}
  \fi
}%
    
\newtoks\toklistecaseM%
\def\UpdatetoksMosaique#1/#2\nil{\addtotok\toklistecaseM{(#1,#2),}}%

\newcommand\Mosaique[2][]{%
  \useKVdefault[ClesMosaique]%
  \setKV[ClesMosaique]{#1}%
  \setsepchar[*]{,*/}%
  \readlist*\ListeMosaique{#2}%
  \toklistecaseM{}%
  \foreachitem\compteur\in\ListeMosaique{\expandafter\UpdatetoksMosaique\compteur\nil}%
  \DessineMosaiqueComplet{\the\toklistecaseM}%
}%