Re: [NTG-context] MPgraphic with rounded corners
Thank you to both Aditya and Wolfgang; I think I need to get a better grounding in the basic principles of MetaFun before trying to dabble again... Duncan ___ 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 ___
[NTG-context] MPgraphic with rounded corners
Hello all.
I have adapted a bit of MP code from Aditya from a mailing list message
dated 2006-05-19
(http://archive.contextgarden.net/message/20060519.214124.9174ac0e.en.html)
to ensure that when a page break occurs in a textbackground there is a
forced vertical space inside the box at the top of the new page.
This code works fine for me (although interestingly not in the garden):
\setupcolors[state=start]
\startuseMPgraphic{mpos:par:myexample}
path p;
for i = 1 upto nofmultipars :
p := multipars[1] topenlarged 8pt bottomenlarged 8pt;
fill p withcolor 0.9white ;
draw p withcolor black
withpen pencircle scaled \MPvar{linewidth};
endfor;
\stopuseMPgraphic
\definetextbackground[ExampleBackground]
[mp=mpos:par:myexample,location=paragraph,leftoffset=1em,rightoffset=1em,rulethickness=1pt]
\starttext
\input knuth \endgraf
\starttextbackground[ExampleBackground]
\dorecurse{13}{\input knuth \endgraf}
\stoptextbackground
\input knuth \endgraf
\stoptext
But now I need to make this box have rounded corners, and I am very
confused when reading core-pgr.tex because that is a level of MP code I
just don't understand.
Would somebody please be able to tell me what to change in the above to
make the corners of the box rounded (with a radius of 2mm)?
Thank you very much!
Duncan
___
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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
___
Re: [NTG-context] MPgraphic with rounded corners
On Thu, 15 Jan 2009, Duncan Hothersall wrote:
Hello all.
I have adapted a bit of MP code from Aditya from a mailing list message dated
2006-05-19
(http://archive.contextgarden.net/message/20060519.214124.9174ac0e.en.html)
to ensure that when a page break occurs in a textbackground there is a forced
vertical space inside the box at the top of the new page.
This code works fine for me (although interestingly not in the garden):
\setupcolors[state=start]
\startuseMPgraphic{mpos:par:myexample}
path p;
for i = 1 upto nofmultipars :
p := multipars[1] topenlarged 8pt bottomenlarged 8pt;
Change this to
p := multipars[1] topenlarged 8pt bottomenlarged 8pt cornered 2mm ;
fill p withcolor 0.9white ;
draw p withcolor black
withpen pencircle scaled \MPvar{linewidth};
endfor;
\stopuseMPgraphic
\definetextbackground[ExampleBackground]
[mp=mpos:par:myexample,location=paragraph,leftoffset=1em,rightoffset=1em,rulethickness=1pt]
\starttext
\input knuth \endgraf
\starttextbackground[ExampleBackground]
\dorecurse{13}{\input knuth \endgraf}
\stoptextbackground
\input knuth \endgraf
\stoptext
But now I need to make this box have rounded corners, and I am very confused
when reading core-pgr.tex because that is a level of MP code I just don't
understand.
Look at the metafun manual. The path p is basically a box (whose
dimentions are equal to the text on the page, but for metapost this is
immaterial) and you wnat to make it have round corners. So you the
appropriate metafun transformation (cornered in this case).
Aditya
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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
___
Re: [NTG-context] MPgraphic with rounded corners
Am 15.01.2009 um 18:26 schrieb Duncan Hothersall:
Hello all.
I have adapted a bit of MP code from Aditya from a mailing list
message dated 2006-05-19 (http://archive.contextgarden.net/message/20060519.214124.9174ac0e.en.html
) to ensure that when a page break occurs in a textbackground there
is a forced vertical space inside the box at the top of the new page.
This code works fine for me (although interestingly not in the
garden):
\setupcolors[state=start]
\startuseMPgraphic{mpos:par:myexample}
path p;
for i = 1 upto nofmultipars :
p := multipars[1] topenlarged 8pt bottomenlarged 8pt;
p := multipars[1] topenlarged 8pt bottomenlarged 8pt smoothed 2mm ;
fill p withcolor 0.9white ;
draw p withcolor black
withpen pencircle scaled \MPvar{linewidth};
endfor;
\stopuseMPgraphic
\definetextbackground[ExampleBackground]
[mp
=
mpos:par:myexample
,location=paragraph,leftoffset=1em,rightoffset=1em,rulethickness=1pt]
\starttext
\input knuth \endgraf
\starttextbackground[ExampleBackground]
\dorecurse{13}{\input knuth \endgraf}
\stoptextbackground
\input knuth \endgraf
\stoptext
But now I need to make this box have rounded corners, and I am very
confused when reading core-pgr.tex because that is a level of MP
code I just don't understand.
Would somebody please be able to tell me what to change in the above
to make the corners of the box rounded (with a radius of 2mm)?
The smoothed function is explained in the MetaFun manual.
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
___
