[Haskell-cafe] ANN: AC-Vector, AC-Colour and AC-EasyRaster-GTK

[Brandon S. Allbery KF8NH]

On Jul 4, 2009, at 15:01 , Max Rabkin wrote:
> On Sat, Jul 4, 2009 at 8:38 PM, Andrew
> Coppin<andrewcoppin at btinternet.com> wrote:
>> 3. It doesn't appear to provide arithmetic over colours.
>
> It provides darken, blend and addition (though addition is called
> mappend rather than (+)). signum, abs and fromInteger don't make a
> huge amount of sense for colours.

I don't see a good meaning for signum offhand, but fromInteger could  
take an X11-encoded RGB value and abs could produce grayscale  
brightness.

-- 
brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery at kf8nh.com
system administrator [openafs,heimdal,too many hats] allbery at ece.cmu.edu
electrical and computer engineering, carnegie mellon university    KF8NH


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