\pagestyle{empty}
\begin{document}
-% \buildMesh[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)}
-
-% \buildMesh[tikz, bbox = show]{(0,0);(3.5,3);(7,0);(7.5,5);(1.61,3.14);(3,1);(6,1.5)}
-
-% \buildMesh[mode=ext]{mesh.txt}
-
-% \meshAddOnePoint[
-% meshpoint = x,
-% colorNew =green!20!red,
-% colorBack=red!10,
-% colorCircle = green!70,
-% scale=0.6cm]
-% {(0,0);(3.5,3);(7,0);(7.5,5);(1.61,3.14);(6,4)}{(3,1)}
-% \meshAddOnePoint[
-% 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)}
-\meshAddOnePoint[
+\buildMeshBW[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, bbox = show]{(0,0);(3.5,3);(7,0);(7.5,5);(1.61,3.14);(3,1);(6,1.5)}
+
+\buildMeshBW[mode=ext]{mesh.txt}
+
+\meshAddPointBW[
+meshpoint = x,
+colorNew =green!20!red,
+colorBack=red!10,
+colorCircle = green!70,
+scale=0.6cm]
+{(0,0);(3.5,3);(7,0);(7.5,5);(1.61,3.14);(6,4)}{(3,1)}
+\meshAddPointBW[
+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)}
+\meshAddPointBW[
meshpoint = x,
colorBack=red!10,
colorNew = green!20!red,
endfig;
\end{mplibcode}
+\meshAddPointBWinc[
+meshpoint = x,
+colorBack=red!10,
+colorNew = green!20!red,
+scale=0.6cm,
+step=badtriangles,
+newpoint = y,
+bbox = show
+]
+{(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;
+endfig;
+}
+
\end{document}