Re: [NTG-context] \rotate[rotation=270] adds extra vertical space

22 Oct 2021


      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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