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From: Jens-Uwe Morawski <morawski@gmx.net>
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Subject: Re: MetaFun refill/do_repath bug
Date: Mon, 16 Sep 2002 22:03:27 +0200
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On Mon, 16 Sep 2002 18:29:55 +0200
Hans Hagen <pragma@wxs.nl> wrote:

> At 05:31 PM 9/16/2002 +0200, Jens-Uwe Morawski wrote:
> >Your macro ignores totally that clipped and bounded elements
> >contain again some more graphic elements, i.e. lines, filled
> >paths etc. Therefore the macro has to be applied recursively to
> >these elements too. Furthermore the pathpart of a clipped
> >or bounded object has to be applied only to the elements in
> >that object and not to the whole picture.
> 
> hm, will look into it, kind of funny that "i" then is a path and picture at 
> the same time

the i in the loop is always a picture but the macro pathpath extracts
the path information. for clipped and bounded objects these paths are
the clip or setbounds paths. 

> >Please find below a MP-file that illustrates what i mean.
> >It compares the macro "uniformfilled" from my article with
> >your "refill".
> 
> btw, a real robust solution also takes fonts into account so i'll have a 
> look at that (fontpart and textpart)

you need more since fontpart and textpart do not include the
transformations applied to the text. But, since i in a
  for i within a_picture
is always a picture, text elements can be handled easily with
addto ... also i ; The test for textual and textpart/fontpart
is only needed if you really want to work with the text-information.

In order to rewrite all text in blue it should be enough to say:
if textual i:
  addto tmp_pic also i withcolor blue ;
fi;

Jens