Hi Marco,
If I understand correctly what you need is a system which is basically based on
booklet-printing but each booklet should be restricted to 16 pages.
In this case you might try
\setuparranging[2*2*4]
This scheme put two pages on the front and two pages on the backside of a sheet
of paper. Then it uses 4 sheets to complete the section.
Willi
On May 29, 2012, at 7:06 PM, Marco Pessotto wrote:
>
> Hello there.
>
> I'd need a custom imposition schema, just like the 2*4*2, but first the
> sheets will be folded, then inserted in signatures of 16 pages, and then
> finally bound. (They said the machine can fold only one sheet).
>
> I came up with 3 "solutions" (or 3 hacks, as you wish):
>
> 1. psutils/pstops
>
> 2. layers
>
> 3. hack page-imp.mkiv
>
>
> 1. The first solution would be the faster, but after spending a day on
> it I gave up, because I have endless issue with cropped pages, paper
> dimension not correctly set, and I only scratched the surface. I don't
> know if exists some support for psutils (doesn't look so), but I have
> the feeling that software is pretty dead.
>
> 2. Layers: I'm attaching the code below. Does it seem sensible, or is
> there a better way to do it? (I'll create a template from that, and will
> loop over every 16 pages with the usual perl hack). It seems to work,
> even if visually it looks a bit shifted to right (I can adjust
> it manually). [An alternate approach could be just various \hbox, but
> maybe the layer solution is better for absolute positioning]
>
> 3. page-imp.mkiv would be the best solution (obviously). I've dug a bit
> into the code, but I'm in deep waters. I can't understand where the
> sequence of the pages is defined. the \pusharrangedpageSCHEMA seems just
> to define the position inside the page, not the sequence of the shipped
> out page. Also, what are \c_page_marks_nx and \c_page_marks_ny? Any
> hint about how this machinery works?
>
>
> Thanks
>
> Best wishes
>
>
> % start draft
>
> \definepapersize[carta][width=320mm,height=440mm]
> \setuppapersize[carta][carta]
> \setuplayout
> [topspace=0pt,
> backspace=0pt,
> header=0pt,
> footer=0pt,
> margin=0pt,
> marking=on,
> width=320mm,
> height=440mm,
> location=middle]
>
> \setuppagenumbering[alternative=doublesided,location=]
> \setuprotate[location=depth,rotation=180]
>
> % \showframe
>
> \starttext
>
> % page one
>
> \definelayer[PageLayer1][position=no]
> \setuplayer
> [PageLayer]
> [preset=topleft,
> height=\paperheight,width=\paperwidth]
>
> \setlayer[PageLayer1][x=0mm,y=0mm]{
> \rotate{
> \externalfigure[libretto.pdf][page=13]
> }
> }
> \setlayer[PageLayer1][x=160mm,y=0mm]{
> \rotate{
> \externalfigure[libretto.pdf][page=4]
> }
> }
> \setlayer[PageLayer1][x=0mm,y=220mm]{
> \externalfigure[libretto.pdf][page=16]
> }
> \setlayer[PageLayer1][x=160mm,y=220mm]{
> \externalfigure[libretto.pdf][page=1]
> }
> \placelayer[PageLayer1]
>
> %%% page 2
>
> \definelayer[PageLayer2][position=no]
> \setuplayer
> [PageLayer]
> [preset=topleft,
> option=test,
> height=\paperheight,width=\paperwidth]
>
> \setlayer[PageLayer2][x=0mm,y=0mm]{
> \rotate{
> \externalfigure[libretto.pdf][page=3]
> }
> }
> \setlayer[PageLayer2][x=160mm,y=0mm]{
> \rotate{
> \externalfigure[libretto.pdf][page=14]
> }
> }
> \setlayer[PageLayer2][x=0mm,y=220mm]{
> \externalfigure[libretto.pdf][page=2]
> }
> \setlayer[PageLayer2][x=160mm,y=220mm]{
> \externalfigure[libretto.pdf][page=15]
> }
> \placelayer[PageLayer2]
>
> %page 3
>
> \definelayer[PageLayer3][position=no]
> \setuplayer
> [PageLayer]
> [preset=topleft,
> option=test,
> height=\paperheight,width=\paperwidth]
>
> \setlayer[PageLayer3][x=0mm,y=0mm]{
> \rotate{
> \externalfigure[libretto.pdf][page=9]
> }
> }
> \setlayer[PageLayer3][x=160mm,y=0mm]{
> \rotate{
> \externalfigure[libretto.pdf][page=8]
> }
> }
> \setlayer[PageLayer3][x=0mm,y=220mm]{
> \externalfigure[libretto.pdf][page=12]
> }
> \setlayer[PageLayer3][x=160mm,y=220mm]{
> \externalfigure[libretto.pdf][page=5]
> }
> \placelayer[PageLayer3]
>
> % page 4
> \definelayer[PageLayer4][position=no]
> \setuplayer
> [PageLayer]
> [preset=topleft,
> option=test,
> height=\paperheight,width=\paperwidth]
>
> \setlayer[PageLayer4][x=0mm,y=0mm]{
> \rotate{
> \externalfigure[libretto.pdf][page=7]
> }
> }
> \setlayer[PageLayer4][x=160mm,y=0mm]{
> \rotate{
> \externalfigure[libretto.pdf][page=10]
> }
> }
> \setlayer[PageLayer4][x=0mm,y=220mm]{
> \externalfigure[libretto.pdf][page=6]
> }
> \setlayer[PageLayer4][x=160mm,y=220mm]{
> \externalfigure[libretto.pdf][page=11]
> }
> \placelayer[PageLayer4]
>
> \stoptext
>
>
>
>
> --
> Marco
>
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___________________________________________________________________________________
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