[pstricks] \ncbezier?

[Bob Tennent]

 |>> Is there some way to get the effect of a \psbezier-like node connector?
 |>> I'd prefer to specify control points explicitly rather than compute
 |>> angle and curv parameters using atans and Pythagoras.
 |>
 |>not possible
 |>If you do not need arrows at the end ...

Of course I *do* want arrowheads at the end.  

So then how would one would compute the arctangent of \theyy over \thexx
and save the result as \theangle, presumably using Postscript? I can't
see any way to do it in LaTeX.

Bob T.