Re: [NTG-context] lmtx update / teaser

1 Mar 2021

      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 ?

Best regards: Otared

% begin example-circular-shape.tex
\starttext

%\startuseMPgraphic{circle}
%	lmt_parshape [
%		path       = fullcircle scaled 136mm,
%		offset     = 2mm,
%		bottomskip = - 1.5LineHeight,
%	] ;
%\stopuseMPgraphic

\startuseMPgraphic{circleBis}
	lmt_parshape [
		path       = fullcircle scaled 90mm,
		offset     = 2mm,
		bottomskip = - 1.5LineHeight,
	] ;
\stopuseMPgraphic

\startalignment[middle]
%\startplacefigure[align=middle,number=no]
\start
\startshapedparagraph[list=circle,mp=circleBis,repeat=yes,method=repeat]%
	\setupalign[verytolerant,stretch,last]
	\dontcomplain
		{\darkred     \samplefile{thuan}}
\stopshapedparagraph
\stop
%\stopplacefigure
\stopalignment 

\stoptext
% end example-circular-shape.tex
...
On 1 Mar 2021, at 15:44, Hans Hagen  wrote:
Hi,
I uploaded a new lmtx. As I'm currently going through the metafun todo files I ended up at the fancy shape part (parshapes) running over multiple paragraphs and decided to provide a (kind of low level) interface that integrates that. The example code is a few decades old but still works ok (i might try to improve them a bit some day). Anyway, here is a teaser:
\starttext
\startuseMPgraphic{circle}
   lmt_parshape [
       path       = fullcircle scaled 136mm,
       offset     = 2mm,
       bottomskip = - 1.5LineHeight,
   ] ;
\stopuseMPgraphic
\start
\startshapedparagraph[list=circle,mp=circle,repeat=yes,method=cycle]%
   \setupalign[verytolerant,stretch,last]\dontcomplain
   {\darkred     \samplefile{tufte}}\par
   {\darkgreen   \samplefile{tufte}}\par
   {\darkblue    \samplefile{tufte}}\par
   {\darkcyan    \samplefile{tufte}}\par
   {\darkmagenta \samplefile{tufte}}\par
\stopshapedparagraph
\stop
\page
\start
\startshapedparagraph[list=circle,mp=circle,repeat=yes,method=repeat]%
   \setupalign[verytolerant,stretch,last]\dontcomplain
   {\darkred     \samplefile{tufte}}
   {\darkgreen   \samplefile{tufte}}
   {\darkblue    \samplefile{tufte}}
   {\darkcyan    \samplefile{tufte}}
   {\darkmagenta \samplefile{tufte}}
\stopshapedparagraph
\stop
\stoptext
The interface is still somewhat rough (no grouping for instance, not a real envrionment so that might change) but seems to work ok. One can also go the tex route and say:
\startparagraphshape[test]
   left 1mm right 1mm
   left 2mm right 2mm
   left 3mm right 3mm
   copy 8
   left 4mm right 4mm
   left 5mm right 5mm
   left 5mm hsize 10cm
\stopparagraphshape
or
\startparagraphshape[test]
   left 1mm right 1mm
   right 3mm
   left 5mm right 5mm
   repeat
\stopparagraphshape
or
\startparagraphshape[test]
   both 1mm both 2mm both 3mm both 4mm both 5mm both 6mm
   both 7mm both 6mm both 5mm both 4mm both 3mm both 2mm
\stopparagraphshape
or
\startparagraphshape[test-repeat]
   both 1mm both 2mm both 3mm both 4mm both 5mm both 6mm
   both 7mm both 6mm both 5mm both 4mm both 3mm both 2mm
   repeat
\stopparagraphshape
and use that with:
\startshapedparagraph[list=test]
   \dorecurse{8}{\showparagraphshape\samplefile{tufte} \par}
\stopshapedparagraph
or
\startshapedparagraph[list=test-repeat]
   \dorecurse{8}{\showparagraphshape\samplefile{tufte} \par}
\stopshapedparagraph
Some more info is in the lowlevel-paragrsph document (part of the low level series).
This kind of features falls into the category 'fancy' (no one reqtested it), nice for posters and covers. It might evolve depending on needs for fancy features, but as said, it's currently a side track of metafun, so it's also in the category 'fun'. It's code for 'controlled' usage.
Hans
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                                         Hans Hagen | PRAGMA ADE
             Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
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Re: [NTG-context] lmtx update / teaser

Otared Kavian