Re: [NTG-context] ConTeXt color to text

2012-09-04 Thread Peter Rolf 
Am 03.09.2012 20:36, schrieb Hans Hagen:
 On 3-9-2012 18:59, Peter Rolf wrote:
 Hi,

 for a batch command (ImageMagick) I need to convert ConTeXt colors to a
 text representation (e.g. rgb 'red' - 'rgb(255,0,0)'; same for color
 models cmyk and gray).
 What is the best way to get (read only) access to the color channels of
 a defined color?
 
 \colorcomponents{red}
 \colorvalue{red}
 
 in next beta:
 
 \startluacode
 
 -- inspect(attributes.colors.spec(red))

Thanks Hans, very nice. Looking out for the next beta. I'll use the time
to check some other problems :-)



 -- table={
 --  [b]=0,
 --  [c]=0,
 --  [model]=cmyk,
 --  [g]=0,
 --  [k]=0,
 --  [m]=1,
 --  [r]=1,
 --  [s]=0.3,
 --  [y]=1,
 -- }
 
 \stopluacode
 
 -
   Hans Hagen | PRAGMA ADE
   Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
 tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
  | www.pragma-pod.nl
 -
 

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[NTG-context] ConTeXt color to text

2012-09-03 Thread Peter Rolf 
Hi,

for a batch command (ImageMagick) I need to convert ConTeXt colors to a
text representation (e.g. rgb 'red' - 'rgb(255,0,0)'; same for color
models cmyk and gray).
What is the best way to get (read only) access to the color channels of
a defined color?


Peter
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Re: [NTG-context] ConTeXt color to text

2012-09-03 Thread Hans Hagen 

On 3-9-2012 18:59, Peter Rolf wrote:

Hi,

for a batch command (ImageMagick) I need to convert ConTeXt colors to a
text representation (e.g. rgb 'red' - 'rgb(255,0,0)'; same for color
models cmyk and gray).
What is the best way to get (read only) access to the color channels of
a defined color?


\colorcomponents{red}
\colorvalue{red}

in next beta:

\startluacode

-- inspect(attributes.colors.spec(red))

-- table={
--  [b]=0,
--  [c]=0,
--  [model]=cmyk,
--  [g]=0,
--  [k]=0,
--  [m]=1,
--  [r]=1,
--  [s]=0.3,
--  [y]=1,
-- }

\stopluacode

-
  Hans Hagen | PRAGMA ADE
  Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
 | www.pragma-pod.nl
-
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archive  : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
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