colored labels in mp

colored labels in mp

[Eythan Weg]

Hi, the following does not seem to use color.  Am
I missing something?  Never used this feature
before...

I use mkiv with luatex 0.36.

\startMPcode
draw  thelabel(btex RED  etex, (0,0))  withcolor blue;
\stopMPcode
\stoptext


Thanks, Eythan 


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Re: colored labels in mp

[Wolfgang Schuster]

Am 27.03.2009 um 13:37 schrieb Eythan Weg:

> Hi, the following does not seem to use color.  Am
> I missing something?  Never used this feature
> before...
>
> I use mkiv with luatex 0.36.
>
> \startMPcode
> draw  thelabel(btex RED  etex, (0,0))  withcolor blue;

label(\textext{\red RED},origin) ;

Wolfgang

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Re: colored labels in mp

[Lutz Haseloff]

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2009/3/27 Wolfgang Schuster <schuster.wolfgang@googlemail.com>

>
> Am 27.03.2009 um 13:37 schrieb Eythan Weg:
>
>  Hi, the following does not seem to use color.  Am
>> I missing something?  Never used this feature
>> before...
>>
>> I use mkiv with luatex 0.36.
>>
>> \startMPcode
>> draw  thelabel(btex RED  etex, (0,0))  withcolor blue;
>>
>
> label(\textext{\red RED},origin) ;
>
gives:

Undefined control sequence.
<argument> label(\textext
                          {\red RED},origin) ;
\processMPgraphic ...zations ;\theMPrandomseed ;#1
                                                  ;\!!es , \@EA \@EA \@EA
\!...
l.7 \stopMPcode


but

label(\sometxt{\blue RED},origin) ;

works here


Greetings Lutz

>
> Wolfgang
>
>
>
> ___________________________________________________________________________________
> 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  : https://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
>
> ___________________________________________________________________________________
>

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Re: colored labels in mp

[Wolfgang Schuster]

Am 27.03.2009 um 13:58 schrieb Lutz Haseloff:

> label(\sometxt{\blue RED},origin) ;
>
> works here

label(textext("\blue RED"),origin) ;

Wolfgang

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Re: colored labels in mp

[Thomas A. Schmitz]

On Mar 27, 2009, at 1:58 PM, Lutz Haseloff wrote:

>
>
> 2009/3/27 Wolfgang Schuster <schuster.wolfgang@googlemail.com>
>
> Am 27.03.2009 um 13:37 schrieb Eythan Weg:
>
>
> Hi, the following does not seem to use color.  Am
> I missing something?  Never used this feature
> before...
>
> I use mkiv with luatex 0.36.
>
> \startMPcode
> draw  thelabel(btex RED  etex, (0,0))  withcolor blue;
>
> label(\textext{\red RED},origin) ;
> gives:
>
> Undefined control sequence.
> <argument> label(\textext
>                           {\red RED},origin) ;
> \processMPgraphic ...zations ;\theMPrandomseed ;#1
>                                                   ;\!!es , \@EA \@EA  
> \@EA \!...
> l.7 \stopMPcode


I think what Wolfgang meant was

label(textext("\red RED"), origin)

Thomas
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Re: colored labels in mp

[Eythan Weg]

Wolfgang Schuster <schuster.wolfgang@googlemail.com>
Fri, 27 Mar 2009 13:45:42 +0100

   Am 27.03.2009 um 13:37 schrieb Eythan Weg:
   
   > Hi, the following does not seem to use color.  Am
   > I missing something?  Never used this feature
   > before...
   >
   > I use mkiv with luatex 0.36.
   >
   > \startMPcode
   > draw  thelabel(btex RED  etex, (0,0))  withcolor blue;
   
   label(\textext{\red RED},origin) ;
   
   Wolfgang
   
Basically, you moved it to TeX to do the coloring,
which is ok.

Now, "draw thelabel(btex RED etex, (0,0)) scaled 2;" works.  
In the same manner , I think,
"withcolor" should work.    At least this is my
understanding of the manual.  But instead it is
silently ignored.  So my question is whether it 
is a bug or not. 

This may not be a context's  issue but a metapost's itself.

Thanks,  Eythan 


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___________________________________________________________________________________

Re: colored labels in mp

[Wolfgang Schuster]

Am 27.03.2009 um 17:43 schrieb Eythan Weg:

> Basically, you moved it to TeX to do the coloring,
> which is ok.

Metapost in MkIV is different from MkII and all labels are typeset
and colored in TeX, if you want a label use textext(...).

My \textext{...} (which is only defined in MkII) is just a TeX
wrapper and converts \textext{\blue RED} in textext("\blue RED")
and in MkIV btex ... etex is converted in textext(...) too.

> Now, "draw thelabel(btex RED etex, (0,0)) scaled 2;" works.
> In the same manner , I think,
> "withcolor" should work.    At least this is my
> understanding of the manual.  But instead it is
> silently ignored.  So my question is whether it
> is a bug or not.

What's written in the manual should work in MkII but a lot
of things are handled in a different like colors.

Wolfgang

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Re: colored labels in mp

[Hans Hagen]

Eythan Weg wrote:
> Wolfgang Schuster <schuster.wolfgang@googlemail.com>
> Fri, 27 Mar 2009 13:45:42 +0100
> 
>    Am 27.03.2009 um 13:37 schrieb Eythan Weg:
>    
>    > Hi, the following does not seem to use color.  Am
>    > I missing something?  Never used this feature
>    > before...
>    >
>    > I use mkiv with luatex 0.36.
>    >
>    > \startMPcode
>    > draw  thelabel(btex RED  etex, (0,0))  withcolor blue;
>    
>    label(\textext{\red RED},origin) ;
>    
>    Wolfgang
>    
> Basically, you moved it to TeX to do the coloring,
> which is ok.
> 
> Now, "draw thelabel(btex RED etex, (0,0)) scaled 2;" works.  
> In the same manner , I think,
> "withcolor" should work.    At least this is my
> understanding of the manual.  But instead it is
> silently ignored.  So my question is whether it 
> is a bug or not. 
> 
> This may not be a context's  issue but a metapost's itself.

indeed tex does the coloring; also honoring mp's colors has been 
discussed on this list but fo rthe moment will nto be supported as it 
will complicate the code; maybe when i have redone the backend and when 
multiple pre/postscripts are supported (on the mplib agenda)

Hans


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