[pstricks] Aesthetics with arrows

[Juergen Gilg]

Dear list,

just to answer my question myself by some private help of Herbert:
>
> When using
>
> \pcline{|->}(O)(B)
> the bar is as well scaled, which for sure makes sense. Is it 
> nevertheless possible to suppress the scaling of the bar(s) -- I would 
> like to have ONLY  the arrowhead definitions globally for a large 
> document. Your solution is fantastic for the given example -- however 
> i have a large amount of some other graphics with bars and vectors and 
> there it doesn't look too good with that thick bars.
>
Here the perfect result to suppress the thickness of the bar that was 
added; _pstricks-add_ offers a WON-DER-FUL command named: \resetOptions, 
that sets all values to the default values and that now allows to 
overwrite some globally set pstricks settings easily locally within the 
\pspicture environment -- very cool!!!

Herbert, keep as well on trucking on the experimental pstricks-add and 
maybe you will move the \resetOptions to the basic pstricks package -- 
really useful for locally or globally resetting the values to the 
default. Indeed this trick solved all my problems to setting values 
globally vs. locally. 

Yoodle!!!!


\documentclass{article}
\usepackage{pstricks,pst-node}
\usepackage{pstricks-add}
\usepackage{esvect}
\parindent=0pt
\begin{document}
\psset{arrowscale=4,arrowlength=3,arrowsize=0 1.5,arrowinset=0,
tbarsize=0.25pt 2}
\begin{pspicture}(-0.5,-0.5)(6,3)
\cnode(0,0){0cm}{O}\cnode(4,0){0cm}{A}
\cnode(6,2){0cm}{B}\cnode(2,2){0cm}{C}
\pcline{->}(O)(A)\nbput{$\vv{b}$}
\pcline{->}(O)(C)\naput{$\vv{a}$}
\pcline{->}(A)(B)\nbput{$\vv{a}$}
\pcline{->}(C)(B)\naput{$\vv{b}$}
% Here the trick
\pcline{->}(O)(B)
\resetOptions
\pcline{|-}(O)(B)
% End of the trick
\nbput[nrot=:U]{$\vv{b}+\vv{a}$}
\naput[nrot=:U]{$\vv{a}+\vv{b}$}
\end{pspicture}
\end{document}

Thanks a lot for your steady work and maintainance of the powerful 
PSTricks bundle.

Regards,

Juergen

-- 
 Jürgen Gilg
 Austr. 59
 70376 Stuttgart
-------------------------------------
 Tel       0711.59 27 88
 e-Mail    gilg at acrotex.net
 Websites  www.acrotex.net
           www.brueckenkurs-physik.de
           www.gilligan-online.de

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