[NTG-context] Re: [ imposition schemas ]

25 Nov 2024


      On 24 Nov 2024, at 14:45, vm  wrote:
...
On 24/11/2024 12:46, Bruce Horrocks wrote:
...
Q3: I don’t know of a way to change the number of pages but how would bundles of 5 work since it is not a multiple of 4?
You'd combine a number of A4 sheets (each with 4 pages) into stacks.
The source for the imposition is a pdf containing A5 pages.
The [2*2*4] scheme generates multiple katernen (stacks) of 4 sheets.
Each sheet containing 4 pages per A4.
The katern contains 4*4 pages.
Instead of stacks of 4 (4*4=16 pages per stack) where then katernen will number from 1..16, 17.32, ...
I'd like to combine 5 (5*4=20) pages per stack) 1..20, 21..40, ...
or 6 (6*4=24) etc
I see. The following will give you 20 pages per stack. To get 24 you’ll need to create \arrangedpageK and add it in following the same pattern as A-J.

%D Section of 40 pages: 5 sheets, 2 pages front and backside
%D Coding: [2*2*5]

\newbox\arrangedpageI \newbox\arrangedpageJ

\installpagearrangement 2*2*5
  {\dosetuparrangement{2}{1}{20}{0}{0}% X,Y,Total,hcutmarks,vcutmarks
     \pusharrangedpageTWOTWOFIVE\poparrangedpagesAtoJ/pop\relax}

\permanent\protected\def\pusharrangedpageTWOTWOFIVE#1%
  {\advancearrangedpageN
   \reportarrangedpage\arrangedpageN
   \ifcase\arrangedpageN
   \or \handlearrangedpageXandY{#1}010\arrangedpageA %  1 rot,hskip,vskip
   \or \handlearrangedpageXandY{#1}000\arrangedpageB %  2
   \or \handlearrangedpageXandY{#1}010\arrangedpageC %  3
   \or \handlearrangedpageXandY{#1}000\arrangedpageD %  4
   \or \handlearrangedpageXandY{#1}010\arrangedpageE %  5
   \or \handlearrangedpageXandY{#1}000\arrangedpageF %  6
   \or \handlearrangedpageXandY{#1}010\arrangedpageG %  7
   \or \handlearrangedpageXandY{#1}000\arrangedpageH %  8
   \or \handlearrangedpageXandY{#1}010\arrangedpageI %  9
   \or \handlearrangedpageXandY{#1}000\arrangedpageJ % 10
   \or \handlearrangedpageXandY{#1}010\arrangedpageJ % 11
   \or \handlearrangedpageXandY{#1}000\arrangedpageI % 12
   \or \handlearrangedpageXandY{#1}010\arrangedpageH % 13
   \or \handlearrangedpageXandY{#1}000\arrangedpageG % 14
   \or \handlearrangedpageXandY{#1}010\arrangedpageF % 15
   \or \handlearrangedpageXandY{#1}000\arrangedpageE % 16
   \or \handlearrangedpageXandY{#1}010\arrangedpageD % 17
   \or \handlearrangedpageXandY{#1}000\arrangedpageC % 18
   \or \handlearrangedpageXandY{#1}010\arrangedpageB % 19
   \or \handlearrangedpageXandY{#1}000\arrangedpageA % 20
       \poparrangedpages
   \fi}

\permanent\protected\def\poparrangedpagesAtoJ
  {\ifnum\arrangedpageN>\zerocount
     \paperwidth\arrangedpageX\paperwidth
     \paperheight\arrangedpageY\paperheight
     \outputarrangedbox\arrangedpageA
     \outputarrangedbox\arrangedpageB
     \outputarrangedbox\arrangedpageC
     \outputarrangedbox\arrangedpageD
     \outputarrangedbox\arrangedpageE
     \outputarrangedbox\arrangedpageF
     \outputarrangedbox\arrangedpageG
     \outputarrangedbox\arrangedpageH
     \outputarrangedbox\arrangedpageI
     \outputarrangedbox\arrangedpageJ
     \global\arrangedpageN\zerocount
   \fi}
   
\def\Schema{2*2*5}

\setuppapersize[A5][A4,landscape] 

% the schema being tested
\setuparranging [\Schema] 

% Visuals
\setupbodyfont[ss,14pt]

\setuplayout [margin=0pt, width=fit, header=2.8ex, footer=2.8ex]
\setupalign[middle,hilo]
\setuppagenumbering [alternative=doublesided,location=footer]
\setupheadertexts[\CONTEXT\ imposition test]

%\showframe
\setupbackgrounds [text][text][background=color,backgroundcolor=lightgray] 

\setuplayout [location=middle,marking=off]

\startbuffer[Fakepage]
    \strut
    \blank
    \bold{[\Schema]}
    \vfill
    This is page \recurselevel
    \vfill
\stopbuffer

\starttext
    \dorecurse{40}{\getbuffer[Fakepage]\page}
\stoptext


—
Bruce Horrocks
Hampshire, UK