[NTG-context] MetaFun labels and xsized

[Pablo Rodriguez]

Dear list,

I have this minimal MetaFun sample (the only one in my real document):

  \setupbodyfont[pagella]
  \starttext
  \startMPcode
  pair a ; a := (1, 1) ;
  pair b ; b := (1, 10) ;
  pair c ; c := (10, 10) ;
  pair d ; d := (10, 1) ;
  draw (a--b--c--d--a) xsized .75TextWidth;

  draw thelabel.lft("α",a) ;
  draw thelabel.lft("β",b) ;
  draw thelabel.top("γ",c) ;
  draw thelabel.rt("δ",d) ;
  \stopMPcode
  \stoptext

Is there a way to relate adapt the labels to the xsized positions used?

Many thanks for your help,

Pablo
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