[pstricks] Brace as node connector?

[Herbert Voss]

Christian Stork schrieb:
> 
> I was wondering if somebody has some macros to use braces as node
> connectors.  This would be a very nice feature, which I would use quite
> often. :-)

hope this helps ...

Herbert


\documentclass{article}
\usepackage{pstricks}
\usepackage{pst-node}
\usepackage{pst-key}
\parindent=0pt
\SpecialCoor
\makeatletter
\define at key{psset}{braceWidth}{%
	\edef\psk at braceWidth{#1}%
}
\setkeys{psset}{braceWidth=0.35}
%
\def\psbrace{\@ifnextchar[{\@psbrace}{\@psbrace[]}}
\def\@psbrace[#1](#2)(#3){{
	\setkeys{psset}{linearc=0.2,linewidth=1pt}% the default
	\setkeys{psset}{#1}%
	\pst at getcoor{#2}\pst at tempa%
	\pst at getcoor{#3}\pst at tempb%
	\pnode(!%
		/bW2 \psk at braceWidth\space 2.0 div def
		\pst at tempa /YA exch \pst at number\psyunit div def
		/XA exch \pst at number\psxunit div def
		\pst at tempb /YB exch \pst at number\psyunit div def
		/XB exch \pst at number\psxunit div def
		/Alpha YB YA sub XB XA sub atan def
		/xMid XB XA add 2.0 div def
		/yMid YB YA add 2.0 div def
		/deltaX Alpha sin bW2 mul def
		/deltaY Alpha cos bW2 mul def
		/xTemp xMid deltaX add def
		/yTemp yMid deltaY sub def
		xTemp yTemp){@tempNode}
	\psline(#2)%
		(! XA deltaX add YA deltaY sub)%\\
		(@tempNode)%
		(! xTemp deltaX add yTemp deltaY sub)%
		(@tempNode)%
		(! XB deltaX add YB deltaY sub)%
		(#3)%
}}
\makeatother
\begin{document}

\begin{pspicture}(10,10)
\psgrid[subgriddiv=0,griddots=10]
\pnode(0,0){A}
\pnode(4,6){B}
\psbrace(A)(B)
\psbrace(B)(A)
\psbrace[braceWidth=1](8,1)(1,7)
\psbrace[braceWidth=-1](8,1)(1,7)
\psbrace[linecolor=red,linewidth=2pt](8,1)(8,9)
\end{pspicture}

\end{document}



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