[pstricks] Fill polygon with wavy pattern

[Martin Buchmann]

Herbert,

i knew all the time that at the end of the day someone will show up and
provide a elegante solution for my purpose ;-) Anyway, i learnt a lot
and that's what it's all about...

Thanks,
Martin

-- 
"Ein Gentleman eilt nicht, wundert sich nicht und zahlt nicht"
                                   -- Alexander von Schönburg