Re: [NTG-context] Transparency (Metapost)

2019-12-01 Thread Wolfgang Schuster

Fabrice Couvreur schrieb am 01.12.2019 um 21:56:

Hi Hans,
I updated lmtx, but your code does not compile except that the output 
is a pdf file where it is written ERROR.


Can you clear the cache.

Wolfgang

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Re: [NTG-context] Transparency (Metapost)

2019-12-01 Thread Hans Hagen

On 12/1/2019 11:32 AM, Fabrice Couvreur wrote:

Hello
Thank you for your suggestion. However, it works with context and not 
with lmtx.

Fabrice

\starttext
\startMPcode
    defaultfont := "texgyrepagella-regular*default" ;
    defaultscale :=0.8;

    color brown;
    brown = (0.128,0.00,0.00);

    path twos, threes, sixes;
    twos = fullcircle xscaled 4cm yscaled 2cm rotated 180
           shifted 42 left;
    threes = fullcircle xscaled 4cm yscaled 2cm shifted 42 right;
    sixes = buildcycle(twos, threes);

    fill twos   withcolor brown withtransparency(1,0.75);
    fill threes withcolor yellow withtransparency(1,0.75);
    fill sixes withcolor yellow + brown withtransparency(1,0.75);

    draw twos;
    draw threes;

    label("...",(1.5cm,0));
    label("...",(0,0));
    label("...",(-1.5cm,0));
    label.top("yeux marron",(-1.5cm,1.25cm));
    label.top("cheveux blonds",(1.5cm,1.25cm));
\stopMPcode
\stoptext

tex error       > tex error on line 1 in file ./blond.tex: ?
Looks ok here ... but isn't the transparacy used instead of the sizes? 
Anyway, you can use named colors


\starttext

\startMPcode
   defaultfont  := "texgyrepagella-regular*default" ;
   defaultscale := 0.8 ;

   definecolor [ name = "mp:red",   b = 1 ] ;
   definecolor [ name = "mp:green", y = 1 ] ;

   path twos, threes ;
   twos   := fullcircle xscaled 4cm yscaled 2cm rotated 180 shifted 42 
left ;
   threes := fullcircle xscaled 4cm yscaled 2cm shifted 42 
right ;


   fill twos   withcolor "mp:red"   withtransparency(1,0.5) ;
   fill threes withcolor "mp:green" withtransparency(1,0.5) ;

   draw twos ;
   draw threes ;

   label("...",( 1.5cm,0));
   label("...",( 0,0));
   label("...",(-1.5cm,0));
   label.top("\strut yeux marron",   (-1.5cm,1.25cm));
   label.top("\strut cheveux blonds",( 1.5cm,1.25cm));
\stopMPcode

\stoptext

(you cannot overload colors at the tex level in mp but use them in order 
to be consistent)


Hans

-
  Hans Hagen | PRAGMA ADE
  Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
   tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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Re: [NTG-context] Transparency (Metapost)

2019-12-01 Thread Fabrice Couvreur
Hello
Thank you for your suggestion. However, it works with context and not with
lmtx.
Fabrice

\starttext
\startMPcode
   defaultfont := "texgyrepagella-regular*default" ;
   defaultscale :=0.8;

   color brown;
   brown = (0.128,0.00,0.00);

   path twos, threes, sixes;
   twos = fullcircle xscaled 4cm yscaled 2cm rotated 180
  shifted 42 left;
   threes = fullcircle xscaled 4cm yscaled 2cm shifted 42 right;
   sixes = buildcycle(twos, threes);

   fill twos   withcolor brown withtransparency(1,0.75);
   fill threes withcolor yellow withtransparency(1,0.75);
   fill sixes withcolor yellow + brown withtransparency(1,0.75);

   draw twos;
   draw threes;

   label("...",(1.5cm,0));
   label("...",(0,0));
   label("...",(-1.5cm,0));
   label.top("yeux marron",(-1.5cm,1.25cm));
   label.top("cheveux blonds",(1.5cm,1.25cm));
\stopMPcode
\stoptext

tex error   > tex error on line 1 in file ./blond.tex: ?


\font_helpers_low_level_define ...\scaledfontmode
  \relax \ifcase
\scaledfont...
\font_helpers_trigger_define ..._identifier_class
  \csname
\v_font_identifier...
\applyfontclassstrategies ...to_size \lastnamedcs
  \else \expandafter
\font_h...
\font_helpers_synchronize_font ...classstrategies
  \fi \setfalse
\c_font_auto...
\rm ->\ifmmode \mathrm \else \normalrm
   \fi
\font_basics_switch_style ...dcsname \lastnamedcs
  \edef \fontstyle
{#1}\ifmm...
...
l.1 \starttext


 1 >>  \starttext
 2 \startMPcode
 3defaultfont := "texgyrepagella-regular*default" ;
 4defaultscale :=0.8;
 5
 6color brown;
 7brown = (0.128,0.00,0.00);
 8
 9path twos, threes, sixes;
10twos = fullcircle xscaled 4cm yscaled 2cm rotated 180
11   shifted 42 left;

mtx-context | fatal error: return code: 256


Le dim. 1 déc. 2019 à 00:34, Jeong Dal  a écrit :

> \
>
>
> Dear Fabrice,
>
> I got color and transparency using the following command in LMTX(metafun).
>
> fill p withcolor yellow withtransparency(1, .75);
>
> I hope that it helps.
>
> Best regards,
>
> Dalyoung
>
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Re: [NTG-context] Transparency (Metapost)

2019-11-30 Thread Jeong Dal
> \

Dear Fabrice,

I got color and transparency using the following command in LMTX(metafun).

fill p withcolor yellow withtransparency(1, .75);

I hope that it helps.

Best regards,

Dalyoung___
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