Hello, On 14.10.2012 19:50, Thomas Freitag wrote: > On 14.10.2012 17:23, Adam Reichold wrote: > Hello Thomas, > > Thanks for the offer. As I understand it, this simulates how the > actual physical layers of colour would mix in real printing? It does > sound like a sensible feature to me. >> No, that's not true. Overprint is a feature already introduced in >> PostScript and is also defined in the PDF spec, see i.e. chapter 8.6.7 >> as an introduction. But there are only a very few free available viewer >> which implements it. Beside acrobat reader (and of course poppler :-) ) >> I only know ghostscript which implements it. And even in ghostscript it >> is not well known because overprint works only in subtractive >> colorspaces like CMYK, so You have to render in a CMYK-like colorspace >> and then convert the result to RGB to see it on the monitor. And this is >> what the just uploaded patch does.
I am not sure I understand how this explanation conflicts with "sensible feature" as in "it makes sense to have this feature". May be a misunderstanding? Or do you refer to that it does not simulate the interaction of physical layers of colour? Best regards, Adam. >> Cheers, >> Thomas > > Why not post the patch to discuss the feature's merits based on that? > > Best regards, Adam. > > On 14.10.2012 13:47, Thomas Freitag wrote: >>>> Hi folks! >>>> >>>> Is there anybody in the community who wants the possibility to >>>> simulate overprint in qt library? With the implementation of >>>> DeviceN support in splash this is quite easy now, so I can upload a >>>> patch. For everybody who doesn't know anything about overprint I >>>> attach three screenshots which shows the implementation in okular. >>>> (This is not fake, I made a small apprentice piece today morning >>>> :-) ) >>>> >>>> Cheers, Thomas >>>> >>>> >>>> _______________________________________________ poppler mailing >>>> list [email protected] >>>> http://lists.freedesktop.org/mailman/listinfo/poppler >>>> >> _______________________________________________ >> poppler mailing list >> [email protected] >> http://lists.freedesktop.org/mailman/listinfo/poppler >> >> . >> > > > _______________________________________________ > poppler mailing list > [email protected] > http://lists.freedesktop.org/mailman/listinfo/poppler _______________________________________________ poppler mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/poppler
