[NTG-context] lmtx update / teaser

Hans Hagen j.hagen at xs4all.nl
Mon Mar 1 19:13:36 CET 2021

On 3/1/2021 6:27 PM, Otared Kavian wrote:
> Hi Hans,
> Thank you for the new upload.
> The teaser examples work fine, many thanks !
> I have a question though: how can one center within a page a text, for example typeset in a circular shape? I tried with \startalignment, and also with \startplacefigure but none of these gives a centered circular shape.
> Also I noticed that if one removes the comment at the end of \startshapedparagraph, or add a blank line after that, then the circular shape is destroyed: is this on purpose ?

     lmt_parshape [
         path       = fullcircle scaled 90mm,
         offset     = 2mm,
         bottomskip = - 1.5LineHeight,
     ] ;

             {\darkred \samplefile{thuan}}


We're talking parshapes here, think of

\parshape 2
   2mm 10cm
   4mm 12cm


\parshape 2
   options 1 % force a repeat
   2mm 10cm
   4mm 12cm

but then nicely wrapped in a macro. The circle is (cf metafun manual) 
converted into such a parshape. A parshape is forgotten when a new 
paragraph is started, but ... we have extra magic that revives them 
which is why the multi-page-par examples work too. The cycle and repeat 
methods do that (using abit diufferent tricks than the 20 year old one 
but not that different); these methods are independent of the parshape's 
repeat option itself, which is an engine feature.

Messing with left/right 'align' will also bring left/rightskip into the 
game so normally you will not do that. I admit it take a bit of 
imagination to get the picture. The 'last' keyword is some old context 
feature that centers the last line (which looks nicer in a circle) which
is using some parfillskip magic.


                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl

More information about the ntg-context mailing list