MPgraphic question

MPgraphic question

[Hans van der Meer]

I find it difficult to see the difference -- and therefore when to  
use the one or the other -- between useMPgraphic and uniqueMPgraphic.
Is there someone who will enlighten me? Because I hate not knowing  
what I am doing.

yours sincerely,
dr. H. van der Meer

Re: MPgraphic question

[Hans Hagen]

Hans van der Meer wrote:

> I find it difficult to see the difference -- and therefore when to  
> use the one or the other -- between useMPgraphic and uniqueMPgraphic.
> Is there someone who will enlighten me? Because I hate not knowing  
> what I am doing.

say that you have a background behind framed:

compare:

\startuseMPgraphic{test}
    draw OverlayBox withcolor red ;
\stopuseMPgraphic{test}

\setupcolor[state=start]

\defineoverlay[test][\useMPgraphic{test}]

\starttext

\framed[background=test]{Hans}
\framed[background=test]{Hans van}
\framed[background=test]{Hans van der}
\framed[background=test]{Hans van der Meer}
\framed[background=test]{Hans}


\stoptext

compare: use, reuse and unique and you'll notice the differnece:

use: every time (i.e. 5 mp runs)
reuse: once, each framed gets the same background (some have wrong 
dimensions)
unique: 4 runs, the last one has the same dimensions and is shared

so ... unique is able to determine if it can reuse (based on 
configurable characteristics)

Hans

Re: MPgraphic question

[David Arnold]

I am recalling from memory, but try each, but use the graphic about  
five times in your document. Before compiling, clear your directory  
of all files except your sample tex file. Then compile.

If I remember, when you use the useMPgraphic, you'll get a graphic  
file each time you use it (five of them), but only one with the  
uniqueMPgraphic.

That's one difference, if I am remembering this properly.

On Jan 13, 2006, at 12:52 PM, Hans van der Meer wrote:

> I find it difficult to see the difference -- and therefore when to  
> use the one or the other -- between useMPgraphic and uniqueMPgraphic.
> Is there someone who will enlighten me? Because I hate not knowing  
> what I am doing.
>
> yours sincerely,
> dr. H. van der Meer
>
>
>
> _______________________________________________
> ntg-context mailing list
> ntg-context@ntg.nl
> http://www.ntg.nl/mailman/listinfo/ntg-context

David Arnold
College of the Redwoods
Mathematics Department
Eureka, CA 95501
(707) 476-4222
http://online.redwoods.edu/instruct/darnold/

Re: MPgraphic question

[Hans Hagen]

David Arnold wrote:

> I am recalling from memory, but try each, but use the graphic about  
> five times in your document. Before compiling, clear your directory  
> of all files except your sample tex file. Then compile.
>
> If I remember, when you use the useMPgraphic, you'll get a graphic  
> file each time you use it (five of them), but only one with the  
> uniqueMPgraphic.

unique only generates a new instance when the overlaystamp has changed:

\def\overlaystamp
  {\overlaywidth:\overlayheight:\overlaydepth 
:\MPcolor\overlaycolor:\MPcolor\overlaylinecolor}

Hans