Re: [NTG-context] Circled text in metapost

On Thu, 2018-03-29 at 18:05 +0200, Gerhard Kugler wrote:

On Thu, Mar 29, 2018 at 07:11:50AM -0600, Alan Braslau wrote:

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On Thu, 29 Mar 2018 12:43:56 +0200 Gerhard Kugler wrote:

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One misunderstanding made by my post: I want to write the text curved as a (half-)circle.

Take a look at the Metafun manual.

In the manual is an example on page 233 with the following content:

Nah!  Don't use those macros.  They are only for demonstration.  Use the builtin \followtokens instead: \loadmarkfile{meta-imp-txt} % is this supposed to be loaded like that? \starttext \startuseMPgraphic{followtokens}   path RotPath ; RotPath := reverse halfcircle ; \stopuseMPgraphic \followtokens{Text on a half circle} \stoptext

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\def\rotatetokens#1#2#3#4% delta extra radius tokens {\vbox\bgroup \MPtoks\emptytoks \resetMPdrawing \startMPdrawing picture pic[] ; numeric wid, len[], rot ; numeric delta, extra, radius, n, r ; len[0] := n := 0 ; delta := #1 ; extra := #2 ; radius := #3 ; \stopMPdrawing \handletokens#4\with\processrotationtoken \startMPdrawing r := len[n]/Pi ; for i=1 upto n : wid := abs(xpart lrcorner pic[i] - xpart llcorner pic[i]) ; rot := extra + delta - ((len[i]-.5wid)/len[n]) * (180+2delta) ; draw pic[i] rotatedaround (origin,-270) shifted (-r-radius, ypart -.5[ulcorner pic[i], llcorner pic[i]]) rotatedaround (origin,rot) ; endfor ; \stopMPdrawing \MPdrawingdonetrue \getMPdrawing \resetMPdrawing \egroup}

\startcombination[3*1] {\rotatetokens {0} {0}{0}{Does it work ok?}} {A} {\rotatetokens{20} {0}{0}{Does it work ok?}} {B} {\rotatetokens{20}{30}{0}{Does it work ok?}} {C} \stopcombination

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But I cannot see what part calls what parts and how they can be embedded.

Gerhard