+\meshAddPointBWinc[
+meshpoint = x,
+colorBack=red!10,
+colorNew = green!20!red,
+scale=0.6cm,
+step=badtriangles,
+newpoint = y,
+bbox = show,
+colorBbox = blue!20,
+]
+{(0,0);(3.5,3);(7,0);(7.5,5);(1.61,3.14);(6,4)}{(3,1)}{%
+beginfig(0);
+}%
+{%
+ draw (-1,-1)*u--(8.5,-1)*u--(8.5,6)*u--(-1,6)*u--cycle withcolor \mpcolor{red};
+endfig;
+}
+
+
+\section{tikz}
+
+\buildMeshBW[tikz,print=points, meshpoint = I,
+color=red]{(0,0);(3.5,3);(7,0);(7.5,5);(1.61,3.14);(3,1);(6,1.5)}
+
+\buildMeshBW[tikz,mode=ext, color=red]{mesh.txt}
+
+\drawPointsMesh[tikz,mode=ext,bbox = show,
+color=red,print=points]{mesh.txt}
+\drawPointsMesh[tikz,mode=ext,bbox = show, color=red]{mesh.txt}
+
+\buildMeshBWinc[tikz,mode=ext,bbox = show, colorBbox = blue]{mesh.txt}{%
+}%
+{%
+ \draw[color = red] (0,0) -- (3,3);
+}
+
+\meshAddPointBW[
+tikz,
+color = green,
+meshpoint = x,
+colorBack=red!10,
+colorNew = green!20!red,
+scale=0.6cm,
+step=cavity]
+{(0,0);(3.5,3);(7,0);(7.5,5);(1.61,3.14);(6,4)}{(3,1)}
+
+\meshAddPointBWinc[
+tikz,
+meshpoint = x,
+colorBack=red!10,
+colorNew = green!20!red,
+scale=0.6cm,
+step=badtriangles,
+newpoint = y,
+bbox = show,
+colorBbox = blue!20,
+]{(0,0);(3.5,3);(7,0);(7.5,5);(1.61,3.14);(6,4)}{(3,1)}
+{}{\draw[color=green] (0,0) -- (3,3);}
+
+\meshAddPointBW[
+tikz,
+meshpoint = x,
+colorBack=red!10,
+colorNew = green!20!red,
+scale=0.6cm,
+step=badtriangles,
+newpoint = y,
+bbox = show,
+colorBbox = black
+]
+{(0,0);(3.5,3);(7,0);(7.5,5);(1.61,3.14);(6,4)}{(3,1)}
+
+
+% \def\CircumPoint{y}
+% \luampcolor
+% \directlua{
+% buildVoronoiMP("mesh.txt","ext","points","","1cm","show")
+% }
+\buildVoronoiBW[mode=ext]{mesh.txt}
+\buildVoronoiBW[mode=ext,delaunay=show,colorVoronoi=green!60!blue]{mesh.txt}\par
+\buildVoronoiBW[mode=ext,print=points,delaunay=show,bbox=show,meshpoint=x,circumpoint=y]{mesh.txt}
+
+
+\buildVoronoiBW[tikz,mode=ext]{mesh.txt}
+\buildVoronoiBW[tikz,mode=ext,delaunay=show,colorVoronoi=green!60!blue]{mesh.txt}\par
+\buildVoronoiBW[tikz,mode=ext,print=points,delaunay=show,bbox=show,meshpoint=x,circumpoint=y]{mesh.txt}
+
+\buildVoronoiBWinc[mode=ext]{mesh.txt}{beginfig(0);}{endfig;}
+\buildVoronoiBWinc[tikz,mode=ext,print=points]{mesh.txt}{}{}
+
+
+\buildVoronoiBWinc[tikz,mode=ext,print=points,delaunay=show,meshpoint=x,circumpoint=y]{mesh.txt}{}{\draw[color=blue,thick] (0,0)--(3,3);}
+
+\def\MeshPoints{P}
+\directlua{
+ drawGmshMP("maillage.msh","points","8cm")
+}\par
+\directlua{
+ gmshVoronoiMP("maillage.msh","none","8cm","none")
+}
+
+\drawGmsh[tikz,scale=8cm]{maillage.msh}