[pstricks] pstricks-add:hookarrow
Herbert Voss
Herbert.Voss at alumni.TU-Berlin.DE
Thu Mar 17 20:53:24 CET 2005
Bernd Sellentin wrote:
>Looking at the code, there is no hookwidth defined for arrow type h.
>Is there a way to change the side of the hook? I need it for typesetting the
>equilibrium arrows in chemical formulas.
>
>
>
\documentclass{article}
\usepackage{pstricks-add}
\makeatletter
\@namedef{psas at h}{%
/Rhook {
CLW mul add dup
2 div /w ED mul dup /h ED mul
/a ED w neg h abs moveto 0 0 L
gsave stroke grestore
} def
0 \psk at arrowlength \psk at arrowsize \tx at Rhook}
\makeatother
\begin{document}
\psline{-h}(0,0)(2,0)
\psline[arrowsize=3mm]{-h}(0,0)(2,0)
\psline[arrowsize=-3mm]{-h}(0,0)(2,0)
\end{document}
Herbert
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