Works fine here.
Alan
P.S. I simplified your code slightly:
\definefloat
[recipe]
[figure]
[default={right,none}]
\setupbodyfont [pagella,9pt]
\starttext
\startplacerecipe
\startMPcode
pair vert[] ;
numeric n ; n := 5 ;
numeric radius ; radius := 2cm ;
for i=0 upto n :
vert[i] = radius * dir(360*i/(n+1)) ;
endfor ;
draw for i=0 upto n: vert[i] -- endfor cycle withcolor blue ;
draw for i=0 upto n: vert[i] .. endfor cycle withcolor red ;
draw origin--vert0 withcolor green ;
draw origin--vert5 withcolor green ;
draw origin--.5[vert0,vert5] dashed evenly ;
label.urt("C",vert1) ;
%alternately:
%draw textext.urt("C") shifted vert1 ;
\stopMPcode
\stopplacerecipe
\input knuth
\stoptext
On Thu, 31 Dec 2015 17:46:35 +0100
Fabrice Couvreur <fabrice1.couvr...@gmail.com> wrote:
> Hello,
> The code below works perfectly without the placement of the label,
> but if I want to place the label, it no longer works.
> Thank you
>
> \definefloat
> [recipe]
> [figure]
>
> \setupfloat
> [recipe]
> [default={right,none}]
>
> \starttext
>
> \switchtobodyfont [pagella, 9pt]
>
> \placerecipe{}{
>
> \startMPcode
>
> pair vert[] ;
> n:=6 ; radius=2cm ;
> for i=0 upto n :
> vert[i] = radius * dir(360*i/n) ;
> endfor ;
>
> draw for i=0 upto n-1: vert[i] -- endfor cycle withcolor blue ;
>
> draw for i=0 upto n-1: vert[i] .. endfor cycle withcolor red ;
>
> draw (0,0)--vert[0] withcolor green ;
>
> draw (0,0)--vert[5] withcolor green ;
>
> draw (0,0) --(vert[0]+vert[5])/2 dashed evenly ;
>
> % label.urt("C",vert[1]) ;
>
>
> \stopMPcode
> }
>
> \input knuth
>
> \stoptext
--
Alan Braslau
CEA DSM-IRAMIS-SPEC
CNRS UMR 3680
Orme des Merisiers
91191 Gif-sur-Yvette cedex FRANCE
tel: +33 1 69 08 73 15
fax: +33 1 69 08 87 86
mailto:alan.bras...@cea.fr
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