[NTG-context] A dumb question about MetaFun

[Taco Hoekwater]

> On 16 Aug 2020, at 21:09, Keith McKay <mckaymeister at 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