Consider the following MWE:
Code: Select all
\documentclass{article}
\usepackage{auto-pst-pdf,pstricks-add}
\begin{document}
\begin{figure}
\centering
\def\radius{21.65}
\def\faktor{0.33333333}
\pstFPmul\RelRadius\faktor{\radius}
\psset{unit=0.35cm,linecolor=red}
\begin{pspicture}(-0.2,-0.2)(15,17)
\pnode(0,0){A}
\pnode(!0 \RelRadius){B}
\pnode(!2 \RelRadius\space mul \RelRadius){C}
\pnode(!2 \RelRadius\space mul 0){D}
\pnode(!\RelRadius\space dup){E}
\pscustom[linewidth=3pt,dimen=inner]{%
\psline(A)(D)\psarc(E){\RelRadius}{0}{180}\psline(B)(A)
}
\end{pspicture}
\end{figure}
\end{document}
How do I fix this?
Of course I can draw a small square at the bottom left corner but that is not exactly elegant.

Thank you in advance!