[metapost] CMYK colours in SVG output

Stephan Hennig mailing_list at arcor.de
Fri Jul 8 17:44:35 CEST 2011

schrieb Taco Hoekwater:
> On 07/07/2011 07:44 PM, Stephan Hennig wrote:
>> To be honest, I'd expect MetaPost to error out on colouring objects with
>> colours from a colour model that isn't supported by the output format.
> Metapost has a long tradition of implied built in color conversions
> (like auto-mapping of rgb to greyscale if r=g=b),

Can you give an example?  This writes an RGB grey into the output:

  draw fullcircle withcolor .3white;

> For now, there is a very simple solution, though: do not use cmyk
> color with svg output (also, if you create svg, I think you should 
> know already that it does not support cmyk).

The problematic case is probably when you use named colours in EPS
output (intentionally a CMYK colour) and later decide to generate an SVG
file.  There is nothing that reminds you of the colour model issue,

Best regards,
Stephan Hennig

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