+\define@boolkey{buildMeshInc}{tikz}[true]{}%
+%% show the bounding box for delaunay
+\define@choicekey*{buildMeshInc}{bbox}[\val\nr]{none, show}{%
+ \ifcase\nr\relax%
+ \def\luameshval@bm@bbox{none}%
+ \or%
+ \def\luameshval@bm@bbox{bbox}%
+ \fi%
+}%
+%% the scale
+\define@key{buildMeshInc}{scale}[1cm]{\def\luameshval@bm@scale{#1}}%
+%% print ponits ?
+\define@choicekey*{buildMeshInc}{print}[\val\nr]{none, points}{%
+ \ifcase\nr\relax%
+ \def\luameshval@bm@print{none}%
+ \or%
+ \def\luameshval@bm@print{points}%
+ \fi%
+}%
+%% the name of the point
+\define@key{buildMeshInc}{meshpoint}[P]{\def\luameshval@bm@meshpoint{#1}}%
+%% the mode for reading the points
+\define@choicekey*{buildMeshInc}{mode}[\val\nr]{int, ext}{%
+ \ifcase\nr\relax%
+ \def\luameshval@bm@mode{int}%
+ \or%
+ \def\luameshval@bm@mode{ext}%
+ \fi%
+}%
+%
+%color
+%% the name of the color of drawing
+\define@key{buildMeshInc}{color}[black]{\def\luameshval@bm@color{#1}}%
+%% the name of the color of drawing the bbox
+\define@key{buildMeshInc}{colorBbox}[black]{\def\luameshval@bm@colorbbox{#1}}%
+%
+\presetkeys{buildMeshInc}{tikz=false,bbox=none,scale, meshpoint,mode=int,print=none,color,colorBbox}{}%
+%
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% the difinition BW Bowyer and Watson algo
+\newcommand*{\buildMeshBWinc}[4][]{%
+ % #1 : the string containing the list of points
+ % (x1,y1);(x2,y2);... or the name file containing the points
+ \setkeys{buildMesh}{#1} %
+ \def\MeshPoint{\luameshval@bm@meshpoint}%
+ \ifKV@buildMesh@tikz% if we are using tikz
+ \directlua{%
+ buildMeshTikZ("#2","\luameshval@bm@mode","\luameshval@bm@print","\luameshval@bm@bbox","full","\luameshval@bm@scale","\luameshval@bm@color")%
+ }%
+ \else % we are using MP
+ \mplibcolor{\luameshmpcolor}{\luameshval@bm@color}
+ \mplibcolor{\luameshmpcolorBbox}{\luameshval@bm@colorbbox}
+ \directlua{%
+ buildMeshMPBWinc("#2","#3","#4","\luameshval@bm@mode","\luameshval@bm@print","\luameshval@bm@bbox","\luameshval@bm@scale")%
+ }%
+ %
+ \fi%
+}%
+%
+%%%%%%%%%%%%%%%% the buildMeshBW command
+%% engine of drawing
+\newif\ifluameshengineMP%