* missing btex ..etex in mp figure
@ 2008-05-15 23:42 luigi scarso
2008-05-16 9:49 ` Taco Hoekwater
0 siblings, 1 reply; 4+ messages in thread
From: luigi scarso @ 2008-05-15 23:42 UTC (permalink / raw)
To: mailing list for ConTeXt users
In
\starttext
\startTEXpage
\startlua
metapost.process("metafun",{"beginfig(1);",
"a=.7in; b=0.5in;",
"z0=(0,0); z1=(a,0); z2=(0,b);",
"z0=.5[z1,z3]=.5[z2,z4];",
"draw z1..z2..z3..z4..cycle;",
"drawarrow z0..z1;",
"drawarrow z0..z2;",
"label.top(btex $a$ etex, .5[z0,z1]);",
"label.lft(btex $b$ etex, .5[z0,z2]);",
"endfig;"})
\stoplua
\stopTEXpage
\stoptext
there are no labels, but I believe that it's wrong.
--
luigi
it's new .
it's powerful .
it's luatex .
http://www.luatex.org
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* Re: missing btex ..etex in mp figure
2008-05-15 23:42 missing btex ..etex in mp figure luigi scarso
@ 2008-05-16 9:49 ` Taco Hoekwater
2008-05-17 15:41 ` Hans Hagen
0 siblings, 1 reply; 4+ messages in thread
From: Taco Hoekwater @ 2008-05-16 9:49 UTC (permalink / raw)
To: mailing list for ConTeXt users
luigi scarso wrote:
> In
>
> \starttext
> \startTEXpage
> \startlua
> metapost.process("metafun",{"beginfig(1);",
> "a=.7in; b=0.5in;",
> "z0=(0,0); z1=(a,0); z2=(0,b);",
> "z0=.5[z1,z3]=.5[z2,z4];",
> "draw z1..z2..z3..z4..cycle;",
> "drawarrow z0..z1;",
> "drawarrow z0..z2;",
> "label.top(btex $a$ etex, .5[z0,z1]);",
> "label.lft(btex $b$ etex, .5[z0,z2]);",
> "endfig;"})
> \stoplua
> \stopTEXpage
> \stoptext
>
> there are no labels, but I believe that it's wrong.
The MPlib library embedded in luatex does not actually
support btex .. etex blocks.
It is planned to intercept such blocks in the mkiv lua
code, but for now, just use textext().
Best wishes,
Taco
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* Re: missing btex ..etex in mp figure
2008-05-16 9:49 ` Taco Hoekwater
@ 2008-05-17 15:41 ` Hans Hagen
2008-05-17 17:41 ` luigi scarso
0 siblings, 1 reply; 4+ messages in thread
From: Hans Hagen @ 2008-05-17 15:41 UTC (permalink / raw)
To: mailing list for ConTeXt users
Taco Hoekwater wrote:
>
> luigi scarso wrote:
>> In
>>
>> \starttext
>> \startTEXpage
>> \startlua
>> metapost.process("metafun",{"beginfig(1);",
>> "a=.7in; b=0.5in;",
>> "z0=(0,0); z1=(a,0); z2=(0,b);",
>> "z0=.5[z1,z3]=.5[z2,z4];",
>> "draw z1..z2..z3..z4..cycle;",
>> "drawarrow z0..z1;",
>> "drawarrow z0..z2;",
>> "label.top(btex $a$ etex, .5[z0,z1]);",
>> "label.lft(btex $b$ etex, .5[z0,z2]);",
>> "endfig;"})
>> \stoplua
>> \stopTEXpage
>> \stoptext
>>
>> there are no labels, but I believe that it's wrong.
>
> The MPlib library embedded in luatex does not actually
> support btex .. etex blocks.
>
> It is planned to intercept such blocks in the mkiv lua
> code, but for now, just use textext().
why not use
\starttext
\startMPpage
a=.7in; b=0.5in;
z0=(0,0); z1=(a,0); z2=(0,b);
z0=.5[z1,z3]=.5[z2,z4];
draw z1..z2..z3..z4..cycle;
drawarrow z0..z1;
drawarrow z0..z2;
label.top(btex $a$ etex, .5[z0,z1]);
label.lft(btex $b$ etex, .5[z0,z2]);
endfig;
\stopMPpage
\stoptext
this uses:
metapost.graphic(mpsformat,str,preamble)
which does intercept the btex/etex
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If your question is of interest to others as well, please add an entry to the Wiki!
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___________________________________________________________________________________
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* Re: missing btex ..etex in mp figure
2008-05-17 15:41 ` Hans Hagen
@ 2008-05-17 17:41 ` luigi scarso
0 siblings, 0 replies; 4+ messages in thread
From: luigi scarso @ 2008-05-17 17:41 UTC (permalink / raw)
To: mailing list for ConTeXt users
Ok.
In next example, f>0 is hide
\starttext
\startTEXpage\startMPcode
%beginfig(2);
h=2in; w=2.7in;
path p[], q[], pp;
for i=1.5,2,4:
ii := i**2;
p[i] = (w/ii,h){1/ii,-1}...(w/i,h/i)...(w,h/ii){1,-1/ii};
endfor
for i=.5,1.5:
q[i] = origin..(w,i*h) cutafter p1.5;
endfor
pp = buildcycle(q0.5, p2, q1.5, p4);
fill pp withcolor .8white;
z0=center pp;
picture lab; lab=thelabel(btex $f>0$ etex, z0);
unfill bbox lab; draw lab;
draw q0.5; draw p2; draw q1.5; draw p4;
makelabel.top(btex $P$ etex, p2 intersectionpoint q0.5);
makelabel.rt(btex $Q$ etex, p2 intersectionpoint q1.5);
%endfig;
\stopMPcode\stopTEXpage
\stoptext
--
luigi
it's new .
it's powerful .
it's luatex .
http://www.luatex.org
___________________________________________________________________________________
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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2008-05-15 23:42 missing btex ..etex in mp figure luigi scarso
2008-05-16 9:49 ` Taco Hoekwater
2008-05-17 15:41 ` Hans Hagen
2008-05-17 17:41 ` luigi scarso
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