On Sep 11, 2008, at 7:59 PM, Thomas A. Schmitz wrote: > > On Sep 11, 2008, at 6:20 PM, Thomas A. Schmitz wrote: > >>> \starttext >>> >>> \start >>> >>> \setbox\scratchbox\vbox{\externalfigure[mill]} >>> >>> \dimen0=\wd\scratchbox >>> \dimen2=\ht\scratchbox >>> >>> \framed[frame=on,strut=no,width=8cm,height=2cm] >>> {\dimen1=\hsize \divide\dimen1 by \dimen0 >>> \dimen3=\vsize \divide\dimen3 by \dimen2 >>> \ifdim\dimen1>\dimen3 >>> \externalfigure[mill][height=\vsize] >>> \else >>> \externalfigure[mill][width=\hsize] >>> \fi} >>> >>> \framed[frame=on,strut=no,width=2cm,height=8cm] >>> {\dimen1=\hsize \divide\dimen1 by \dimen0 >>> \dimen3=\vsize \divide\dimen3 by \dimen2 >>> \ifdim\dimen1>\dimen3 >>> \externalfigure[mill][height=\vsize] >>> \else >>> \externalfigure[mill][width=\hsize] >>> \fi} >>> >>> \stop >>> >>> \stoptext >>> >>> Wolfgang >> >> Wolfgang, >> >> as always, you're a source of wisdom and knowledge... Just I >> understand this correctly and can adapt it to my macro: \dimen1= >> \hsize: here \hsize refers to the size of the \framed inside which >> we're operating, right? > > And another question: I get an error "! Illegal unit of measure (pt > inserted)." Is it really possible to divide a dimension by another > dimension? Not according to what I read here: > http://www.tug.org/utilities/plain/cseq.html#divide-rp > "must be a nonzero integer." See, I'm far from being a native > speaker of TeX... > I now have something along these lines (ugly code ahead!):
\setbox\scratchbox\vbox{\externalfigure[mill]% \dimen0=\wd\scratchbox% [EMAIL PROTECTED] \def\@@[EMAIL PROTECTED] \dimen4=\textwidth \divide\dimen4 by \@@WD% \dimen2=\ht\scratchbox% [EMAIL PROTECTED] \def\@@[EMAIL PROTECTED] \dimen6=\textheight \divide\dimen6 by \@@HT% \ifdim\dimen4>\dimen6% \def\Myheight{\textheight}\def\Mywidth{}% \else% \def\Mywidth{\textwidth}\def\Myheight{}% \fi and then use height=\Myheight,width=\Mywidth. Bu there's still a problem... Anyway, does it make sense in general? Thomas ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : https://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________