* metapost and lua
@ 2010-08-05 22:32 Philipp Gesang
2010-08-05 22:55 ` Hans Hagen
2010-08-06 11:34 ` Hans Hagen
0 siblings, 2 replies; 6+ messages in thread
From: Philipp Gesang @ 2010-08-05 22:32 UTC (permalink / raw)
To: ntg-context
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Hi all!
[1] Is there a Lua interface for metapost? I'm thinking of something
like cld is for TeX here. All I figured out so far is how to
generate mp code (as strings) in Lua and then having it
processed by mplib, but as the metafun manual is from 2002 and
with context you never know how far it is ahead of your dreams …
[1a] If not [1], then: will there ever be something like this?
[2] There's an example for “metapost.process()” in mlib-ctx.mkiv but
I can't get it to work. I simply copypasted it as follows:
···8<··········································································
\starttext
\startluacode
mpgraphic = [[
for i=1 upto 1000 :
beginfig(0);
draw halfcircle scaled 1cm withcolor green ;
picture p ; p := "oeps" infont defaultfont scaled .75 rotated 45 ;
p := p shifted - (xpart center p,0) ;
draw p ; draw boundingbox p ;
endfig ;
beginfig(0);
draw halfcircle scaled 1cm dashed evenly withcolor green ;
endfig ;
beginfig(0);
pickup pencircle xscaled .5mm yscaled .25mm rotated 45 ;
draw halfcircle scaled 1cm withcolor red ;
endfig ;
beginfig(0);
draw halfcircle scaled 1cm ;
endfig ;
beginfig(0);
pickup pencircle xscaled .5mm yscaled .25mm rotated 45 ;
for k:=1 upto 10 :
draw halfcircle scaled uniformdeviate(1cm) withcolor (red/(k/4)) ;
endfor ;
endfig ;
endfor ;
]]
metapost.process(metapost.format("metafun"),mpgraphic)
\stopluacode
\stoptext
···8<··········································································
This fails in mlib-run.lua at line 324. (Same with all my other
tries, but I assume code from the context sources has a much
higher probability of being valid.) Do I miss something critical?
Thanks for your help,
Philipp
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
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wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: metapost and lua
2010-08-05 22:32 metapost and lua Philipp Gesang
@ 2010-08-05 22:55 ` Hans Hagen
2010-08-06 11:34 ` Hans Hagen
1 sibling, 0 replies; 6+ messages in thread
From: Hans Hagen @ 2010-08-05 22:55 UTC (permalink / raw)
To: mailing list for ConTeXt users; +Cc: Philipp Gesang
On 6-8-2010 12:32, Philipp Gesang wrote:
> [1a] If not [1], then: will there ever be something like this?
it's on my agenda to look into this
> [2] There's an example for “metapost.process()” in mlib-ctx.mkiv but
> I can't get it to work. I simply copypasted it as follows:
i have no time now, but remind me to make an example
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: metapost and lua
2010-08-05 22:32 metapost and lua Philipp Gesang
2010-08-05 22:55 ` Hans Hagen
@ 2010-08-06 11:34 ` Hans Hagen
2010-08-06 11:44 ` Hans Hagen
2010-08-06 12:17 ` Philipp Gesang
1 sibling, 2 replies; 6+ messages in thread
From: Hans Hagen @ 2010-08-06 11:34 UTC (permalink / raw)
To: mailing list for ConTeXt users; +Cc: Philipp Gesang
On 6-8-2010 12:32, Philipp Gesang wrote:
> Hi all!
>
> [1] Is there a Lua interface for metapost? I'm thinking of something
> like cld is for TeX here. All I figured out so far is how to
> generate mp code (as strings) in Lua and then having it
> processed by mplib, but as the metafun manual is from 2002 and
> with context you never know how far it is ahead of your dreams …
>
> [1a] If not [1], then: will there ever be something like this?
>
> [2] There's an example for “metapost.process()” in mlib-ctx.mkiv but
> I can't get it to work. I simply copypasted it as follows:
>
> ···8<··········································································
>
> \starttext
> \startluacode
> mpgraphic = [[
> for i=1 upto 1000 :
> beginfig(0);
> draw halfcircle scaled 1cm withcolor green ;
> picture p ; p := "oeps" infont defaultfont scaled .75 rotated 45 ;
> p := p shifted - (xpart center p,0) ;
> draw p ; draw boundingbox p ;
> endfig ;
> beginfig(0);
> draw halfcircle scaled 1cm dashed evenly withcolor green ;
> endfig ;
> beginfig(0);
> pickup pencircle xscaled .5mm yscaled .25mm rotated 45 ;
> draw halfcircle scaled 1cm withcolor red ;
> endfig ;
> beginfig(0);
> draw halfcircle scaled 1cm ;
> endfig ;
> beginfig(0);
> pickup pencircle xscaled .5mm yscaled .25mm rotated 45 ;
> for k:=1 upto 10 :
> draw halfcircle scaled uniformdeviate(1cm) withcolor (red/(k/4)) ;
> endfor ;
> endfig ;
> endfor ;
> ]]
> metapost.process(metapost.format("metafun"),mpgraphic)
> \stopluacode
>
> \stoptext
how about:
\starttext
\startluacode
context.startMPcode()
context("draw fullcircle scaled 10cm;")
context.stopMPcode()
context.resetMPdrawing()
context.startMPdrawing()
context("fill fullcircle scaled 10cm;")
context.stopMPdrawing()
for i=1,100,5 do
context.startMPdrawing()
context("draw fullcircle scaled " ..i .. "mm withcolor white;")
context.stopMPdrawing()
end
context.MPdrawingdonetrue()
context.getMPdrawing()
\stopluacode
\stoptext
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: metapost and lua
2010-08-06 11:34 ` Hans Hagen
@ 2010-08-06 11:44 ` Hans Hagen
2010-08-06 12:20 ` Philipp Gesang
2010-08-06 12:17 ` Philipp Gesang
1 sibling, 1 reply; 6+ messages in thread
From: Hans Hagen @ 2010-08-06 11:44 UTC (permalink / raw)
To: mailing list for ConTeXt users; +Cc: Philipp Gesang
Hi,
I've added \MPdrawing and \MPcode so that less calls are needed
for i=1,100,5 do
context.MPdrawing("draw fullsquare scaled " ..i .. "mm withcolor
white;")
end
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: metapost and lua
2010-08-06 11:34 ` Hans Hagen
2010-08-06 11:44 ` Hans Hagen
@ 2010-08-06 12:17 ` Philipp Gesang
1 sibling, 0 replies; 6+ messages in thread
From: Philipp Gesang @ 2010-08-06 12:17 UTC (permalink / raw)
To: mailing list for ConTeXt users
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On 2010-08-06 <13:34:20>, Hans Hagen wrote:
> how about:
>
> \starttext
>
> \startluacode
> context.startMPcode()
> context("draw fullcircle scaled 10cm;")
> context.stopMPcode()
>
> context.resetMPdrawing()
>
> context.startMPdrawing()
> context("fill fullcircle scaled 10cm;")
> context.stopMPdrawing()
>
> for i=1,100,5 do
> context.startMPdrawing()
> context("draw fullcircle scaled " ..i .. "mm withcolor white;")
> context.stopMPdrawing()
> end
>
> context.MPdrawingdonetrue()
>
> context.getMPdrawing()
> \stopluacode
>
> \stoptext
That's more or less what I'm doing right now; I was being curious about
the “metapost.process(etc)” function, especially concerning the first
argument: “mpx” -- what could be a valid format identifier besides
"metafun"? Why does it fail on the otherwise sound example from
mlib-ctx.mkiv? It's nothing urgent, just plain curiosity.
Philipp
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
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2010-08-05 22:32 metapost and lua Philipp Gesang
2010-08-05 22:55 ` Hans Hagen
2010-08-06 11:34 ` Hans Hagen
2010-08-06 11:44 ` Hans Hagen
2010-08-06 12:20 ` Philipp Gesang
2010-08-06 12:17 ` Philipp Gesang
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