colorNew = green!20!red,
scale=0.6cm,
step=newtriangles,
-newpoint = y
+newpoint = y,
+bbox = show
]
{(0,0);(3.5,3);(7,0);(7.5,5);(1.61,3.14);(6,4)}{(3,1)}
+% \newcommand\mpred{\mpcolor{red}}
+% \newcommand\test{dotlabel(btex $x$ etex, (0,0));draw (0,0)--(2cm,0) withcolor red;}
+% \begin{mplibcode}
+% beginfig(0);
+% %\meshAddOnePoint[picture=embedded]{(0,0);(3.5,3);(7,0);(7.5,5);(1.61,3.14);(6,4)}{(3,1)}
+% \test
+% endfig;
+% \end{mplibcode}
\end{document}