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From: Gerben Wierda <gerben.wierda@rna.nl>
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Subject: Using \startuseMPgraphic inside a textext() in
 METAPOST?
Date: Mon, 27 Apr 2020 10:47:09 +0200
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I am in METAPOST which is inside TeX and I=E2=80=99d like (in METAPOST, =
not in TeX) to let a string follow a path. Adapting from the MetaFun =
manual around page 250, I tried this:

\starttext

\startMPpage[instance=3Ddoublefun]
pic p;
p :=3D textext("\startuseMPgraphic[instance=3Ddoublefun]{followtokens}path=
 RotPath ; RotPath :=3D fullcircle ;\stopuseMPgraphic\followtokens{I am =
creating a line of text here}");
draw pic;
\stopMPpage

\stoptext

But that does not work. Is there a way I can from within my METAPOST =
code get  string (TeX code) to follow a path I have? In my case, I =
cannot escape outside the \startMPpage- -\stopMPpage environment, as the =
actual path is constructed there and the text following the path should =
be on that page.

G=

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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D"">I =
am in METAPOST which is inside TeX and I=E2=80=99d like (in METAPOST, =
not in TeX) to let a string follow a path. Adapting from the MetaFun =
manual around page 250, I tried this:<div class=3D""><br class=3D""><div =
class=3D""><div class=3D""><font face=3D"Courier" =
class=3D"">\starttext</font></div><div class=3D""><font face=3D"Courier" =
class=3D""><br class=3D""></font></div><div class=3D""><font =
face=3D"Courier" class=3D""><span style=3D"font-style: normal;" =
class=3D"">\startMPpage[instance=3Ddoublefun]</span></font></div><div =
class=3D""><font face=3D"Courier" class=3D""><span style=3D"font-style: =
normal;" class=3D"">pic p;</span></font></div><div class=3D""><font =
face=3D"Courier" class=3D""><span style=3D"font-style: normal;" =
class=3D"">p :=3D =
textext("\startuseMPgraphic[instance=3Ddoublefun]{followtokens}path =
RotPath ; RotPath :=3D fullcircle ;\stopuseMPgraphic\followtokens{I am =
creating a line of text here}");</span></font></div><div class=3D""><font =
face=3D"Courier" class=3D""><span style=3D"font-style: normal;" =
class=3D"">draw pic;</span></font></div><div class=3D""><font =
face=3D"Courier" class=3D""><span style=3D"font-style: normal;" =
class=3D"">\stopMPpage</span></font></div><div class=3D""><font =
face=3D"Courier" class=3D""><br class=3D""></font></div><div =
class=3D""><font face=3D"Courier" =
class=3D"">\stoptext</font></div></div><div class=3D""><br =
class=3D""></div><div class=3D"">But that does not work. Is there a way =
I can from within my METAPOST code get &nbsp;string (TeX code) to follow =
a path I have? In my case, I cannot escape outside the \startMPpage- =
-\stopMPpage environment, as the actual path is constructed there and =
the text following the path should be on that page.</div><div =
class=3D""><br class=3D""></div><div =
class=3D"">G</div></div></body></html>=

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