[pstricks] Naive question

[Herbert Voss]

Pedro Jorge Caridade wrote:

>>\ArrowPolygon[linecolor=red,xunit=0.5,yunit=0.25,arrowscale=3](1,-1)(20,5)(10,15)
>>    
>>
>
>How does my macro understand these options? It is because I defined as
>an pstricks object? I think I'm starting to understand this....
>  
>
yes, all is done by the object macro. This is useful when having the default
parameter structure

\macroname[options]{arrows}XXXX

\begin at ClosedObj

starts with

  \leavevmode
  \pst at killglue
  \begingroup
    \use at par
....

If you need a special structure of parameters, you could also use

\makeatletter
\def\ArrowPolygon{\@ifnextchar[{\ArrowPolygon at i}{\ArrowPolygon at i[]}}
\def\ArrowPolygon at i[#1](#2,#3)(#4,#5)(#6,#7){{
  \pst at killglue
  \psset{#1}
  .....
}}
\makeatother


more basic infos are available at http://perce.de/LaTeX/pst-code/

> was ok! Another small question: when does your book be available in
> English? 

hopefully at end of this year.


Herbert