I found another workaround, but I'm going to try this. Thank you, Keith,
and thank you, Taco.

Cordially,

Jairo :)

El dom., 16 de ago. de 2020 3:36 p. m., Taco Hoekwater <taco@elvenkind.com>
escribió:

>
>
> > On 16 Aug 2020, at 21:09, Keith McKay <mckaymeister@gmail.com> wrote:
> >
> > Jairo
> >
> > Try
> >
> > draw unitsquare scaled 1cm shifted (xcm, ycm);
> >
> > Page 11 of the manual metafun-p.pdf is your friend here. My recent
> conversation with Taco on this list will be usefull as well.
>
> Also:
>
> \starttext
> \startMPpage
> % puts the center of the bbox of path p at the point t
> primarydef p centered t =
>  hide(xshift := xpart t - (xpart urcorner p + xpart llcorner p)/2 ;
>       yshift := ypart t - (ypart urcorner p + ypart llcorner p)/2 ; )
>  p shifted (xshift,yshift)
> enddef;
>
> draw fullsquare scaled 2cm shifted (50,3) centered (100,100);
>
> % just for reference:
> drawdot origin withpen pencircle scaled 10 withcolor red;
> drawdot (100,100) withpen pencircle scaled 10 withcolor green;
> \stopMPpage
> \stoptext
>
> (I thought there was a metafun definition for that but I cannot find it).
>
> Best wishes,
> Taco
>
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