Re: loop textext and \MPstring{…}

[Aditya Mahajan <adityam@umich.edu>]

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On Wed, 12 Aug 2009, Andreas Harder wrote:

>
> Am 12.08.2009 um 07:40 schrieb Aditya Mahajan:
>
>> On Tue, 11 Aug 2009, Andreas Harder wrote:
>> 
>>> Hi,
>>> 
>>> I am trying to achieve the following:
>>> 
>>> \setMPtext{1}{ABC}
>>> \setMPtext{2}{DEF}
>>> \setMPtext{3}{GHI}
>>> 
>>> \starttext
>>> 
>>> \startMPpage[offset=1ex,width=\paperwidth,height=\paperheight]
>>> for i=1 upto 3:
>>>  draw textext(\MPstring{i}) shifted(i*cm,i*cm) ;
>>> endfor;
>>> \stopMPpage
>>> 
>>> \stoptext
>>> 
>>> There is no error but no content either. What's wrong?
>> 
>> Another way to do this is to use
>> 
>> \TeXtext{1}{ABC} etc.
>> 
>> and then call
>> 
>> draw sometxt(i)
>> 
>> For Sec 4.5 of Mojca's my way on sometxt 
>> http://dl.contextgarden.net/myway/sometxt.pdf
>
> Thank you for the tip, I tried it, but sometext seems deprecated in mkiv 
> ("[do we need TeXtexts in MkIV]").

I thought that you were using MKII.

> I've different buffers named 1–12 and would like to pipe them to Metapost. I 
> thought I could use a textext(\getbuffer[i])-construct, it failed. So I tried 
> it with \setMPtext{}{} …
>
> What is the approach to achieve this?

Well, if nothing else works, you can always cheat.

\startluacode
   userdata = userdata or {}
   userdata.labels = {
     [1] = "ABC" ,
     [2] = "DEF" ,
     [3] = "GHI" }

   function userdata.shift(i)
     return "(" .. i .. "cm ," .. i .. "cm )"
   end

   function userdata.draw(i)
     return "draw btex " .. userdata.labels[i] .. " etex  shifted ".. 
userdata.shift(i) .. ";"
   end

\stopluacode

\starttext

\startluacode
   context.startMPpage({offset = "1ex", width = [[\paperwidth]], height = 
[[\paperheight]]})
     for i = 1,3 do
       context(userdata.draw(i))
     end
   context.stopMPpage()
\stopluacode

\stoptext

Aditya

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