Draw geometric shape via Latex

Question

Can I draw this shape via LaTeX?

Is there a software to draw any shape as

Answer 1

Your question smell on "do-it-for-me" questions ...

As starting point, if you like to use tikz package for drawing, can serve the following (pseudo)code:

\documentclass[tikz, border=1ex]{standalone}

\begin{document}
\begin{tikzpicture}
\draw[draw=green, very thick, rounded corners, fill=gray]
    (<coordinate 1>) -- (<coordinate 2>) -- %and so on
    (<coordinate k>) node[above=3mm] {$\Omega$} -- %and so on
    (<coordinate n) -- cycle;
\draw[draw=red, very thick, rounded corners, fill=white]
    (<coordinate 1>) -- (<coordinate 2>) -- %and so on
    (<coordinate j>) node[above=3mm] {$\Gamma_u$} -- %and so on
    (<coordinate n) -- cycle;
\end{tikzpicture}
\end{document}

Selection of coordinates is left to you. Also to which one you wish to associate node with $\Gamma_m$.