Re: texexec: can it crop?

["Christopher Tipper" <chris.tipper@e-conomist.fsnet.co.uk>]

> >> Incredible what manipulations one wants. Fortunately this is rather trivial
> >> to implement. [a more efficient method is to embed it in the output
> >> routine, but that can make documents faulty. 
> >
> >\slicepages[file.pdf][n=2] does 90% of the job.
> >
> >without knowing how tex macros operate I suspect the problem with my
> output stems from the fact that the origin is bottom-left rather than
> top-left.
> >
> >So if the slides are arranged like so
> >
> >1  2
> >3  4
> >
> >my output then becomes
> >
> >3 4 1 2 etc. etc. i.e. starting from bottom-left. Maybe a fix is too
> complicated?

The following hack works:

   \dorecurse{\noffigurepages}
     {\let\pslice=\recurselevel
      \dostepwiserecurse{\@@ipn}{1}{-1}            %this changed
        {\let\xslice\recurselevel
         \dorecurse{\@@ipn}
           {\let\yslice\recurselevel
            \clip
              [\c!nx=\@@ipn,\c!ny=\@@ipn,\c!x=\xslice,\c!y=\yslice]
              {\schaal
                 [\c!schaal=\@@ipn000]
                 {\externalfigure[#1][\c!pagina=\pslice]}}
            \pagina}}}
   \egroup}

I don't know what impact for n=3, n=4, n=5 etc. is.

Christopher