On 10/21/2021 6:34 PM, Pablo Rodriguez via ntg-context wrote:
Dear list,
I have the following imposition sample:
\startbuffer[newbuff]
\showframe\showgrid
\setuppapersize[A3, landscape]
\setuplayout[width=middle]
\starttext
\dorecurse{4}{\null\page}
\stoptext
\stopbuffer
\startmode[*first]
\savebuffer[newbuff][A3page.tex, prefix=no]
\executesystemcommand{context --purgeall A3page.tex}
\stopmode
\showframe
\setuplayout[page]
\setuppapersize[A5][A4, landscape]
\setuparranging [2UP]
\setupinteractionscreen[option={landscape, paper}]
\starttext
\doiffile{A3page.pdf}
{\def\Doc{A3page.pdf}
\getfiguredimensions[\Doc]
\dorecurse{\noffigurepages}
{\ifodd\recurselevel
\rotate[rotation=90]
{\externalfigure[\Doc][page=\recurselevel, width=\textheight]}
\else\rotate[rotation=270]
{\externalfigure[\Doc][page=\recurselevel, width=\textheight]}
\fi}}
\stoptext
I’m afraid that if rotation values are 270 or 180, the imposed page has
an extra vertical space before.
nicer demo:
\showframe
\starttext
\topskip4cm
\dostepwiserecurse{0}{360}{10}{
\ruledhbox{\rotate[rotation=#1]{\blackrule[width=\textheight,height=\textwidth,depth=0cm,color=darkred]}}
}
\dostepwiserecurse{0}{360}{10}{
\ruledhbox{\rotate[rotation=#1,location=high]{\blackrule[width=\textheight,height=\textwidth,depth=0cm,color=darkgreen]}}
}
\dostepwiserecurse{0}{360}{10}{
\ruledhbox{\rotate[rotation=#1,location=fit]{\blackrule[width=\textheight,height=\textwidth,depth=0cm,color=darkblue]}}
}
\dostepwiserecurse{0}{360}{10}{
\ruledhbox{\rotate[rotation=#1,location=middle]{\blackrule[width=\textheight,height=\textwidth,depth=0cm,color=darkcyan]}}
}
\dostepwiserecurse{0}{360}{10}{
\ruledhbox{\rotate[rotation=#1,location=depth]{\blackrule[width=\textheight,height=\textwidth,depth=0cm,color=darkmagenta]}}
}
\dostepwiserecurse{0}{360}{10}{
\ruledhbox{\rotate[rotation=#1,location=broad]{\blackrule[width=\textheight,height=\textwidth,depth=0cm,color=darkyellow]}}
}
\stoptext
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tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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