Hi Hans,

Do you have pstoedit installed ?

root@debian:/home/fab# apt-cache search pstoedit
libpstoedit0c2a - PostScript to editable vector graphics library (runtime files)
root@debian:/home/fab#

I compile the file test.tex  with  context test.tex

Fabrice

2015-08-27 9:39 GMT+02:00 Hans Hagen <pragma@wxs.nl>:

On 8/26/2015 7:12 PM, Fabrice Couvreur wrote:

Hi,
I try to understand how this macro by testing a simple example. Why pdf
file is empty?
This question follows my question Cover page (Metafun)
http://www.ntg.nl/pipermail/ntg-context/2015/083078.html
Thank you.

\setuppagenumbering[location=]

\setupcolors
   [state=start]

\setMPtext{text}{MATHEMATIQUES}


\starttext
\startuseMPgraphic{test}
picture pic ;
pic := image(graphictext \MPstring{text}
withdrawcolor red
withpen pencircle scaled 1pt ; ) ;
addto currentpicture also pic ;
\stopuseMPgraphic
\stoptext

Do you have pstoedit installed?

Anyway, there is a new mechanism that doesn't depend on additional programs:

% outlinetext   (text) transformations ;
% outlinetext.d (text) (draw options) transformations ;
% outlinetext.f (text) (fill options) transformations ;
% outlinetext.b (text) (draw options) (fill options) transformations ;
% outlinetext.r (text) (fill options) (draw options) transformations ;

\starttext

\startMPdefinitions
    let graphictext = new_graphictext ;
\stopMPdefinitions

\startMPpage

    draw outlinetext.b
        ("\framed[align=normal]{\input{tufte}}")
        (withcolor .5white)
        (withcolor red withpen pencircle scaled 1/10)
        xsized 10cm ;

\stopMPpage

\startMPpage

    draw outlinetext.r
        ("\framed[align=normal]{\input{tufte}}")
        (withcolor red withpen pencircle scaled 1/10)
        (withcolor .5white)
        xsized 10cm ;

\stopMPpage

\startMPpage

    draw outlinetext.d
        ("\framed[align=normal]{\input{tufte}}")
        (withcolor .5white)
        xsized 10cm ;

\stopMPpage

\startMPpage

    picture p ; p := outlinetext.p("PX") ;

    for i within p :
        draw i withcolor red withpen pencircle scaled 1/10 ;
    endfor ;

\stopMPpage

\stoptext



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                                          Hans Hagen | PRAGMA ADE
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