luigi scarso wrote:
> In
>
> \starttext
> \startTEXpage
> \startlua
> metapost.process("metafun",{"beginfig(1);",
> "a=.7in; b=0.5in;",
> "z0=(0,0); z1=(a,0); z2=(0,b);",
> "z0=.5[z1,z3]=.5[z2,z4];",
> "draw z1..z2..z3..z4..cycle;",
> "drawarrow z0..z1;",
> "drawarrow z0..z2;",
> "label.top(btex $a$ etex, .5[z0,z1]);",
> "label.lft(btex $b$ etex, .5[z0,z2]);",
> "endfig;"})
> \stoplua
> \stopTEXpage
> \stoptext
>
> there are no labels, but I believe that it's wrong.
The MPlib library embedded in luatex does not actually
support btex .. etex blocks.
It is planned to intercept such blocks in the mkiv lua
code, but for now, just use textext().
Best wishes,
Taco
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