z is a MetaPost intrinsic, something along the lines of
vardef z@#=(x@#,y@#) enddef;
so you can't use the same name for a pair. Actually you can simply
delete the declaration
pair z[];
from your file and it will work as intended. If you insist on using
your own declaration of z, then you have to stash away MetaPost's
definition using
save z; pair z[];
I recommend the former, just delete pair z[];
On 3/01/19 2:43 PM, Fabrice Couvreur wrote:
> Hi,
> I have a problem compiling this file.
> Thanks.
> Fabrice
>
> ###### test file ################################################
> \starttext
> \setupbodyfont [pagella,9pt]
> \startMPpage[offset=2pt]
> path p, q, r, b ; pair z[];
> p := unitsquare xyscaled (9cm,5cm) ;
> z[0] = (2cm,0cm) ;
> z[1] = (2cm,2cm) ;
> z[2] = (0cm,2cm) ;
> q := llcorner p--z[0]--z[1]--z[2]--cycle ;
> r := unitsquare xyscaled (7cm,3cm) shifted(2cm,2cm) ;
> b := z[2]--z[1]--ulcorner r--urcorner p--lrcorner r--z[1]--z[0]--llcorner
> p--cycle ;
> draw p ;
> draw b numberstriped (.25,15,5) withcolor magenta ;
> label.llft("A", p) ;
> label.lrt("D", p) ;
> label.ulft("C", p) ;
> label.urt("B", p) ;
> label.lft("M", z[2]) ;
> label.ulft("N", z[1]) ;
> label.bot("P", z[0]) ;
> label.top("J", ulcorner r) ;
> label.rt("I", lrcorner r) ;
> label.bot(btex $x$ etex,(llcorner p+z[0])/2);
> label.lft(btex $x$ etex,(llcorner p+z[2])/2);
> \stopMPpage
>
> \stoptext
> #############################################################
> ! Declared variable conflicts with previous vardef.
> <to be read again>
> ;
> <*> path p, q, r, b ; pair z[] ;
> z[0] = (2cm,0cm) ; z[1] = (2cm,2cm) ; z[2] ...
> You can't use, e.g., `numeric foo[]' after `vardef foo'.
> Proceed, and I'll ignore the illegal redeclaration.
>
>
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the
Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive : https://bitbucket.org/phg/context-mirror/commits/
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