[NTG-context] \startMPcode and \startMPpage

[Hans Hagen]

On 4/16/2020 8:36 PM, Jeong Dal wrote:
> Hi,
> 
> The following sample code is working well in the \startMPpage ~ 
> \stopMPpage, but is not working in the \startMPcode ~ \stopMPcode.
> 
> The error message is
> 
> \textfont0 is undefined (character 63)
> 
> l.6 \setstrut\strut $A$
> 
> If I remove “$” from the code, it is also working in \startMPcode ~ 
> \stopMPcode.
> 
> Is there anything which I have to set for \startMPcode?

\starttext ... \stoptext

or

\startMPpage[instance=doublefun]

\stopMPpage

> Best regards,
> 
> Dalyoung
> 
> %%%%%%%%
> \startMPcode{doublefun}
> %\startMPpage
> numeric count, temp[], tt, minus, u; u := 1cm;
> path p,q,r;
> pair A,B,C,D;
> string varName, ss, pos[];
> p := unitsquare xyscaled (8u,3.5u);
> *draw p;*
> *
> *
> pos[0] := "bot";
> pos[1] := "rt";
> pos[2] := "top";
> pos[3] := "lft";
> varName := "yxwz";
> count := 0;
> pickup pencircle scaled 5pt;
> 
> for i = 0 upto 3:
> drawdot (point i of p);
> draw lmt_text[
> text = "$" & char(65+i) & "$",
> anchor = pos[i],
> offset = 2pt,
> position = point i of p,
> ];
> endfor;
> %\stopMPpage
> \stopMPcode
> 
> 
> 
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