missing MP shading

missing MP shading

[Peter Rolf]

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hi list,

i have some problems with reusing a picture in mp. the shading is 
missing, if the picture is shifted to another position (see minimal 
example). any help welcome.

[program versions: the latest, the greatest..]

greetings, peter

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\setuppagenumber[state=stop]
\setupcolors[state=start]

\startuniqueMPgraphic{test}
    save p,q; picture p; path q;

    q:= unitsquare xyscaled (OverlayWidth,.5OverlayHeight);
    p:= image(linear_shade(q,6,red,green));

    addto currentpicture also p;
    addto currentpicture also (p yshifted .5OverlayHeight);
\stopuniqueMPgraphic

\defineoverlay[test] [\uniqueMPgraphic{test}]

\starttext
\framed[width=10cm,height=10cm,background=test]{}
\stoptext

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Re: missing MP shading

[Mojca Miklavec]

On Jan 30, 2008 1:55 PM, Peter Rolf wrote:
> hi list,
>
> i have some problems with reusing a picture in mp. the shading is
> missing, if the picture is shifted to another position (see minimal
> example). any help welcome.

Hans mentions this problem in the MP manual, I think (copied circles
with radial shading).
(Doesn't mean that it's unsolvable.)

You need to regenerate p since shading position is kind-of-global.

Mojca
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___________________________________________________________________________________

Re: missing MP shading

[Peter Rolf]

Mojca Miklavec schrieb:
> On Jan 30, 2008 1:55 PM, Peter Rolf wrote:
>> hi list,
>>
>> i have some problems with reusing a picture in mp. the shading is
>> missing, if the picture is shifted to another position (see minimal
>> example). any help welcome.
> 
> Hans mentions this problem in the MP manual, I think (copied circles
> with radial shading).
> (Doesn't mean that it's unsolvable.)
>
ah, stupid me (for ignoring the manual again). i'll have a look.

> You need to regenerate p since shading position is kind-of-global.
>
so the "image" trick doesn't work here and i have to find another solution.

thanks mojca


> Mojca
> ___________________________________________________________________________________
> 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
> ___________________________________________________________________________________
> 

___________________________________________________________________________________
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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