Re: Ghostscript pickling settransfer

From	ken <ken@spamcop.net>
Newsgroups	comp.lang.postscript
Subject	Re: Ghostscript pickling settransfer
Date	2015-05-16 09:03 +0100
Message-ID	<MPG.2fc10a35574c9d909898fb@usenet.plus.net> (permalink)
References	(7 earlier) <MPG.2f9c40dfc725ee159898ec@usenet.plus.net> <71f08c9a-b241-466b-bb2d-462029ab1b3c@googlegroups.com> <db2c3a8f-f4a3-4624-824b-11aeeca3fab4@googlegroups.com> <MPG.2fc014f2cf677fc9898fa@usenet.plus.net> <20150515194502.11569f06@samara.DOMA>

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In article <20150515194502.11569f06@samara.DOMA>, angus@quovadis.com.ar 
says...

> > So the answer is still 'No', the pdfwrite device always writes
> > transfer functions into the grpahcs state, it never applies them.
> 
> Maybe need to change the documentation then...
> 
> http://www.ghostscript.com/doc/9.16/Ps2pdf.htm#note_4

Obviously a typo, it shoudl be 'always preserved'.

 
> Btw, Ghostscript does apply the transfer function when writing to
> another vector based format, Microsoft's XPS (the driver is incomplete
> in other respects tho).

The XPS output code is *much* cruder than the PDF output code. It has 
been improved slightly recently but it still comes close to being an 
image wrapped up as an XPS file.

Also XPS doens't have as rich a colour model as PDF< and doesn't have 
the concept of transfer functions either, as I recall.


			Ken

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Thread

Ghostscript pickling settransfer jdaw1 <jdawiseman@gmail.com> - 2015-04-14 14:01 -0700
  Re: Ghostscript pickling settransfer ken <ken@spamcop.net> - 2015-04-15 08:15 +0100
    Re: Ghostscript pickling settransfer jdaw1 <jdawiseman@gmail.com> - 2015-04-15 01:45 -0700
      Re: Ghostscript pickling settransfer ken <ken@spamcop.net> - 2015-04-15 10:04 +0100
        Re: Ghostscript pickling settransfer jdaw1 <jdawiseman@gmail.com> - 2015-04-17 01:35 -0700
          Re: Ghostscript pickling settransfer ken <ken@spamcop.net> - 2015-04-17 10:07 +0100
            Re: Ghostscript pickling settransfer jdaw1 <jdawiseman@gmail.com> - 2015-04-18 02:01 -0700
              Re: Ghostscript pickling settransfer ken <ken@spamcop.net> - 2015-04-18 11:23 +0100
                Re: Ghostscript pickling settransfer jdaw1 <jdawiseman@gmail.com> - 2015-04-25 15:06 -0700
                Re: Ghostscript pickling settransfer jdaw1 <jdawiseman@gmail.com> - 2015-05-15 06:37 -0700
                Re: Ghostscript pickling settransfer ken <ken@spamcop.net> - 2015-05-15 15:37 +0100
                Re: Ghostscript pickling settransfer Carlos <angus@quovadis.com.ar> - 2015-05-15 19:45 +0200
                Re: Ghostscript pickling settransfer ken <ken@spamcop.net> - 2015-05-16 09:03 +0100

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