Re: [NTG-context] multi-page floats

Sorry for coming back again and again, but I’m still stuck, and my deadline is overdue.

* I need full-page pictures on defined pages in the middle of a chapter.


* I don’t care if I must define "on page x" or "on the next right page after the current paragraph".


- The only way for full-page pictures (i.e. bleeding over the page) that I know of is layers. - The only way to interrupt a story with full-page content that I know of is postponing. (makeups were a dead end so far - maybe they can help to get to a right page withput using \page[right])


While each works for itself, I can’t get layers working within postponing.


And when that works, I need to wrap it in a macro, since I alway need to define and postpone three sequential pages.


Without postponing, this works:

--- *** ---
\setuppagenumbering[alternative=doublesided]

\definelayer[bg][x=0mm,y=-3mm,width=\dimexpr(\paperwidth+3mm),height= \dimexpr(\paperheight+6mm)]
%\definemakeup[rightpage][page=right]

\def\DoublePic#1{
%\startmakeup[rightpage] % error!
\page[right]
\resetlayer[bg]
\setlayer[bg]{\externalfigure[#1][height=\dimexpr(\paperheight+6mm)]}
\setupbackgrounds[page][background=bg]
\strut

%\stopmakeup


% empty back of the first picture, since it’s printed on transparent paper
        %\startmakeup[rightpage] % error!
\page[right]

\resetlayer[bg]

\setlayer[bg]{\externalfigure[#1-hg][height=\dimexpr(\paperheight +6mm)]}
        \setupbackgrounds[page][background=bg]
\strut

%\stopmakeup
\page
}

\starttext

\input tufte

\DoublePic{koe}

\input knuth

\stoptext

--- *** ---

This doesn’t:

--- *** ---
\setuppagenumbering[alternative=doublesided]

\definelayer[bg][x=0mm,y=-3mm,width=\dimexpr(\paperwidth+3mm),height= \dimexpr(\paperheight+6mm)]

\def\DoublePicAt#1#2{
\startpostponing[#2]
\page[right] % tried also makeups...

\resetlayer[bg]
\setlayer[bg]{\externalfigure[#1][height=\dimexpr(\paperheight+6mm)]}
\setupbackgrounds[page][background=bg]
\strut

\page[right]
\setuppagenumber[state=start]

\resetlayer[bg]

\setlayer[bg]{\externalfigure[#1-back][height=\dimexpr(\paperheight +6mm)]}
        \setupbackgrounds[page][background=bg]
\strut
\page
\stoppostponing
}

\starttext

\DoublePicAt{hacker}{5}

\dorecurse{30}{
\section{Knuth \recurselevel}
\input knuth
}

\stoptext

--- *** ---

Can you show me a way to use layers within postponing, please?

Greetlings, Hraban
---
http://www.fiee.net/texnique/
http://wiki.contextgarden.net
https://www.cacert.org (I'm an assurer)

___________________________________________________________________________________