\documentclass{article}
\usepackage[svgnames]{xcolor}
\usepackage{luamesh}
\pagestyle{empty}

\begin{document}

\meshAddPointBW[step=newtriangles,scale=2cm,colorNew=DarkRed,colorBack=red!5]%
{(1.5,1);(4,0);(4.5,2.5);(1.81,2.14);(2.5,0.5);(2.8,1.5)}%
{(2.2,1.8)}

\end{document}
