Re: [NTG-context] How to run Typesetting in MetaPost example (MetaFun)?
Aditya Mahajan wrote:
On Tue, 18 Jan 2011, Verhaag, G.C.H.M. wrote:
Hi,
I wanted to try (using ConTeXt minimals MkIV) the example on page 228
of the MetaFun manual, dealing with typesetting in MetaPost.
I haven't look at the metapost manual ... but
The code is given as:
\resetMPdrawing
\startMPdrawing
picture pic[] ;
numeric wid[], len[], pos[], n ;
wid[0] := len[0] := pos[0] := n := 0 ;
\stopMPdrawing
\def\whatever#1%
{\appendtoks#1\to\MPtoks
\setbox\MPbox=\hbox{\bfd\the\MPtoks}%
\startMPdrawing
n := n + 1 ; len[n] := \the\wd\MPbox ;
\stopMPdrawing
\startMPdrawing[-]
pic[n] := textext(\bfd\setstrut\strut#1) ;
pic[n] := pic[n] shifted - llcorner pic[n] ;
\stopMPdrawing}
\handletokens MetaPost is Fun!\with\whatever
But is won't run. The following message is generated:
The actual error message said
! Undefined control sequence.
\@@toks -\MPtoks
So add
\newtoks\MPtoks
After which you get
! Undefined control sequence.
\whatever ...endtoks #1\to \MPtoks \setbox \MPbox
so add
\newbox\MPbox
After that the file compiles but you get an empty image. There are two
things missing in the code. First you don't tell actually draw the
metapost drawing. for that, add
\MPdrawingdonetrue \getMPdrawing \resetMPdrawing
Still an empty page. Again the pic[n] is calculated but never drawn.
So add
draw p[n] shifted (n*1cm,0) ;
(or perhaps along a more sophisticated path),
and now you have a working example:
\newtoks\MPtoks
\newbox\MPbox
\resetMPdrawing
\startMPdrawing
picture p[] ;
numeric wid[], len[], pos[], n ;
wid[0] := len[0] := pos[0] := n := 0 ;
\stopMPdrawing
\def\whatever#1%
{\appendtoks#1\to\MPtoks
\setbox\MPbox=\hbox{\bfd\the\MPtoks}%
\startMPdrawing
n := n + 1 ; len[n] := \the\wd\MPbox ;
p[n] := textext(\bfd\setstrut\strut#1) ;
p[n] := p[n] shifted - llcorner p[n] ;
draw p[n] shifted (n*1cm,0) ;
\stopMPdrawing}
\starttext
\handletokens MetaPost is Fun!\with\whatever
\MPdrawingdonetrue \getMPdrawing \resetMPdrawing
\stoptext
You could also have just used the macros from meta-txt:
\useMPlibrary[txt]
\startMPdefinitions
newpath RotPath ;
RotPath = fullcircle scaled 3cm ;
\stopMPdefinitions
\starttext
\followtokens{Metapost is fun \quad}
\stoptext
@Hans: Perhaps we can have a more ConTeXtist interface to this macro:
\definetextonepath
[whatever]
[color=...,
style=...,
mp=..., % path specification
]
\whatever{Metapost is fun}
Aditya
Hi,
Okay, that makes things more clear, but couldn't find this in the
manual! Maybe it is very obvious to someone more familiar with METAPOST.
Well, I also tried the nice macro example on page 232 of the MetaFun
manual by Hans, and got of course the same problems. But after I added the
\newtoks\MPtoks
\newbox\MPbox
definitions to the file, it worked!
Also the Inkscape alternative is very useful, thanks for helping me out!
Regards,
Gerard
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Re: [NTG-context] How to run Typesetting in MetaPost example (MetaFun)?
You can also use mkii as command line drawing tool:
# mtxrun texexec test.tex
\starttext
\startTEXpage
\resetMPdrawing
\startMPdrawing
picture pic[] ;
numeric wid[], len[], pos[], n ;
wid[0] := len[0] := pos[0] := n := 0 ;
\stopMPdrawing
\def\whatever#1%
{\appendtoks#1\to\MPtoks
\setbox\MPbox=\hbox{\bfd\the\MPtoks}%
\startMPdrawing
n := n + 1 ; len[n] := \the\wd\MPbox ;
\stopMPdrawing
\startMPdrawing[-]
pic[n] := textext(\bfd\setstrut\strut#1) ;
pic[n] := pic[n] shifted - llcorner pic[n] ;
\stopMPdrawing}
\handletokens MetaPost is Fun!\with\whatever
\startMPdrawing
pair len ; len := origin ;
for i=1 upto n :
draw pic[i] shifted len ;
draw boundingbox pic[i] shifted len
withpen pencircle scaled .25pt withcolor red ;
len := len+(xpart lrcorner pic[i]-xpart llcorner pic[i],0) ;
endfor ;
\stopMPdrawing
\MPdrawingdonetrue\getMPdrawing
\stopTEXpage
\stoptext
--
luigi
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Re: [NTG-context] How to run Typesetting in MetaPost example (MetaFun)?
Verhaag, G.C.H.M. wrote:
Hi,
I wanted to try (using ConTeXt minimals MkIV) the example on page 228
of the MetaFun manual, dealing with typesetting in MetaPost.
The code is given as:
\resetMPdrawing
\startMPdrawing
picture pic[] ;
numeric wid[], len[], pos[], n ;
wid[0] := len[0] := pos[0] := n := 0 ;
\stopMPdrawing
\def\whatever#1%
{\appendtoks#1\to\MPtoks
\setbox\MPbox=\hbox{\bfd\the\MPtoks}%
\startMPdrawing
n := n + 1 ; len[n] := \the\wd\MPbox ;
\stopMPdrawing
\startMPdrawing[-]
pic[n] := textext(\bfd\setstrut\strut#1) ;
pic[n] := pic[n] shifted - llcorner pic[n] ;
\stopMPdrawing}
\handletokens MetaPost is Fun!\with\whatever
But is won't run. The following message is generated:
\@@toks -\MPtoks
\dodoappendtoks -\dodoglobal \@@toks
\@EAEAEA {\@EA \the \@EA \@@toks
\the ...
\whatever #1-\appendtoks #1\to \MPtoks
\setbox \MPbox =\hbox {\bfd
\the \MP...
\dodohandletokenstwo *#1-\dododohandletokens {#1}
\dohandletokens
argument M
etaPost is Fun!
\handletokens ...ndletokens {#2}\dohandletokens #1
\end
l.96 \handletokens MetaPost is Fun!\with\whatever
Anybody any idea?
Regards,
Gerard Verhaag
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Hi,
I'm in need of help to get the example as described in the MetaFun
manual running, because I want to use text around a path!
So, I started reading the chapter about 'Typesetting in METAPOST' and
wanted to try the examples as given in that chapter, but without succes!
The problem seem to be the MPtoks macro. According to the text in this
chapter this low level macro (and MPbox and appendtoks) are already
defined, but are they really?
The version of context minimals I use at the moment is:
MTXrun | current version: 2011.01.18 19:34
Any suggestions are very much welcomed! Thanks in advance!
Regards,
Gerard
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
Re: [NTG-context] How to run Typesetting in MetaPost example (MetaFun)?
Am 19.01.2011 14:35, schrieb Verhaag, G.C.H.M.:
Verhaag, G.C.H.M. wrote:
Hi,
I wanted to try (using ConTeXt minimals MkIV) the example on page 228
of the MetaFun manual, dealing with typesetting in MetaPost.
The code is given as:
\resetMPdrawing
\startMPdrawing
picture pic[] ;
numeric wid[], len[], pos[], n ;
wid[0] := len[0] := pos[0] := n := 0 ;
\stopMPdrawing
\def\whatever#1%
{\appendtoks#1\to\MPtoks
\setbox\MPbox=\hbox{\bfd\the\MPtoks}%
\startMPdrawing
n := n + 1 ; len[n] := \the\wd\MPbox ;
\stopMPdrawing
\startMPdrawing[-]
pic[n] := textext(\bfd\setstrut\strut#1) ;
pic[n] := pic[n] shifted - llcorner pic[n] ;
\stopMPdrawing}
\handletokens MetaPost is Fun!\with\whatever
But is won't run. The following message is generated:
\@@toks -\MPtoks
\dodoappendtoks -\dodoglobal \@@toks
\@EAEAEA {\@EA \the \@EA \@@toks
\the ...
\whatever #1-\appendtoks #1\to \MPtoks
\setbox \MPbox =\hbox {\bfd
\the \MP...
\dodohandletokenstwo *#1-\dododohandletokens {#1}
\dohandletokens
argument M
etaPost is Fun!
\handletokens ...ndletokens {#2}\dohandletokens #1
\end
l.96 \handletokens MetaPost is Fun!\with\whatever
Anybody any idea?
Regards,
Gerard Verhaag
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___
Hi,
I'm in need of help to get the example as described in the MetaFun
manual running, because I want to use text around a path!
So, I started reading the chapter about 'Typesetting in METAPOST' and
wanted to try the examples as given in that chapter, but without succes!
The problem seem to be the MPtoks macro. According to the text in this
chapter this low level macro (and MPbox and appendtoks) are already
defined, but are they really?
The version of context minimals I use at the moment is:
MTXrun | current version: 2011.01.18 19:34
Any suggestions are very much welcomed! Thanks in advance!
Hi Gerard,
how about an alternative way to deal with this?
1. draw the text with Inkscape (put text on a path);
I think there is even a tutorial for this.
2. select the graphic and save it as *.eps
3. use pstoedit to convert it into *.mp
pstoedit -v -ssp -f mpost: foo.eps foo.mp
4. edit/scale the metapost graphic as you like
Best wishes, Peter
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Re: [NTG-context] How to run Typesetting in MetaPost example (MetaFun)?
On Tue, 18 Jan 2011, Verhaag, G.C.H.M. wrote:
Hi,
I wanted to try (using ConTeXt minimals MkIV) the example on page 228 of the
MetaFun manual, dealing with typesetting in MetaPost.
I haven't look at the metapost manual ... but
The code is given as:
\resetMPdrawing
\startMPdrawing
picture pic[] ;
numeric wid[], len[], pos[], n ;
wid[0] := len[0] := pos[0] := n := 0 ;
\stopMPdrawing
\def\whatever#1%
{\appendtoks#1\to\MPtoks
\setbox\MPbox=\hbox{\bfd\the\MPtoks}%
\startMPdrawing
n := n + 1 ; len[n] := \the\wd\MPbox ;
\stopMPdrawing
\startMPdrawing[-]
pic[n] := textext(\bfd\setstrut\strut#1) ;
pic[n] := pic[n] shifted - llcorner pic[n] ;
\stopMPdrawing}
\handletokens MetaPost is Fun!\with\whatever
But is won't run. The following message is generated:
The actual error message said
! Undefined control sequence.
\@@toks -\MPtoks
So add
\newtoks\MPtoks
After which you get
! Undefined control sequence.
\whatever ...endtoks #1\to \MPtoks \setbox \MPbox
so add
\newbox\MPbox
After that the file compiles but you get an empty image. There are two
things missing in the code. First you don't tell actually draw the
metapost drawing. for that, add
\MPdrawingdonetrue \getMPdrawing \resetMPdrawing
Still an empty page. Again the pic[n] is calculated but never drawn. So
add
draw p[n] shifted (n*1cm,0) ;
(or perhaps along a more sophisticated path),
and now you have a working example:
\newtoks\MPtoks
\newbox\MPbox
\resetMPdrawing
\startMPdrawing
picture p[] ;
numeric wid[], len[], pos[], n ;
wid[0] := len[0] := pos[0] := n := 0 ;
\stopMPdrawing
\def\whatever#1%
{\appendtoks#1\to\MPtoks
\setbox\MPbox=\hbox{\bfd\the\MPtoks}%
\startMPdrawing
n := n + 1 ; len[n] := \the\wd\MPbox ;
p[n] := textext(\bfd\setstrut\strut#1) ;
p[n] := p[n] shifted - llcorner p[n] ;
draw p[n] shifted (n*1cm,0) ;
\stopMPdrawing}
\starttext
\handletokens MetaPost is Fun!\with\whatever
\MPdrawingdonetrue \getMPdrawing \resetMPdrawing
\stoptext
You could also have just used the macros from meta-txt:
\useMPlibrary[txt]
\startMPdefinitions
newpath RotPath ;
RotPath = fullcircle scaled 3cm ;
\stopMPdefinitions
\starttext
\followtokens{Metapost is fun \quad}
\stoptext
@Hans: Perhaps we can have a more ConTeXtist interface to this macro:
\definetextonepath
[whatever]
[color=...,
style=...,
mp=..., % path specification
]
\whatever{Metapost is fun}
Aditya
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[NTG-context] How to run Typesetting in MetaPost example (MetaFun)?
Hi,
I wanted to try (using ConTeXt minimals MkIV) the example on page 228 of
the MetaFun manual, dealing with typesetting in MetaPost.
The code is given as:
\resetMPdrawing
\startMPdrawing
picture pic[] ;
numeric wid[], len[], pos[], n ;
wid[0] := len[0] := pos[0] := n := 0 ;
\stopMPdrawing
\def\whatever#1%
{\appendtoks#1\to\MPtoks
\setbox\MPbox=\hbox{\bfd\the\MPtoks}%
\startMPdrawing
n := n + 1 ; len[n] := \the\wd\MPbox ;
\stopMPdrawing
\startMPdrawing[-]
pic[n] := textext(\bfd\setstrut\strut#1) ;
pic[n] := pic[n] shifted - llcorner pic[n] ;
\stopMPdrawing}
\handletokens MetaPost is Fun!\with\whatever
But is won't run. The following message is generated:
\@@toks -\MPtoks
\dodoappendtoks -\dodoglobal \@@toks
\@EAEAEA {\@EA \the \@EA \@@toks
\the ...
\whatever #1-\appendtoks #1\to \MPtoks
\setbox \MPbox =\hbox {\bfd \the
\MP...
\dodohandletokenstwo *#1-\dododohandletokens {#1}
\dohandletokens
argument M
etaPost is Fun!
\handletokens ...ndletokens {#2}\dohandletokens #1
\end
l.96 \handletokens MetaPost is Fun!\with\whatever
Anybody any idea?
Regards,
Gerard Verhaag
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