Re: [NTG-context] metapost code fails to work in mkiv

3 Dec 2008


      Mojca Miklavec wrote:
...
Hello,
A while back I wrote this dirty code (read as: hack) in attachment
that allows multiple optional parameters in metapost functions, for
example:
draw_text("text");
draw_text(angle(30),"text");
draw_text(angle(30),align(right),"text");
draw_text(align(center),"text");
The code compiles fine with mkii, but not with mkiv. I would be
grateful for any hints about how to fix this.
I get the error:
mplib | mp terminal: ! Missing `,' has been inserted.
<to be read again>
                   ,
textext->...etextext(SUFFIX2)(rawtextext((EXPR3)),
                                                  origin)else:thetextext(SUF...
dummy->begingroup(TEXT2)
                        endgroup
gp_put_text->...tt)=tt.enddef;pict:=dummy((TEXT1))
                                                  ;let,=@;endgroup;draw(gp_t...
<*> ...m, 1cm), angle(30), textext.drt("rotated"))
                                                  ; ;
! An expression can't begin with `;'.
<inserted text>
                0
<to be read again>
                   ,
textext->...etextext(SUFFIX2)(rawtextext((EXPR3)),
                                                  origin)else:thetextext(SUF...
Thanks a lot,
    Mojca
(The code is taken out of
http://dl.contextgarden.net/modules/t-gnuplot/metapost/context/third/gnuplot...
and I'm slowly plucking up my courage to port the code to mkiv.)
\startMPcode
     def fuzzy(expr a, b, c) =
         draw image(
             draw textext(c) ;
             currentpicture := currentpicture rotatedaround(center 
currentpicture,b) shifted a ;
         ) ;
     enddef ;

     fuzzy((1cm,1cm), 30, "rotated") ;
\stopMPcode


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