Re: [Chicken-users] [ANN] New egg: color - a port of Aubrey Jaffer's SLIB color module

[Kon Lovett]

> On Apr 29, 2016, at 10:10 PM, Erik Falor <address@hidden> wrote:
> 
> On Fri, Apr 29, 2016 at 05:32:48PM +0000, Alex Charlton wrote:
>>   This is awesome! I was just about to play with some colour related
>>   stuff and I was feeling sad that I didn't have easy access to different
>>   colour spaces. I'm going to use this right now!
>>   Thanks, Erik!
> 
> That's what I call good timing!
> 
> Depending on what you are trying to accomplish, this library might be
> just a bit too low-level. Aubrey's color library showed me that there
> was a lot more to color than I had realized! I found that this library
> came with quite a learning curve. As a result I now better understand
> how our eyes and brains give us vision, but feel that a less academic
> API would be more readily useful to more users.
> 
> For instance, I was interested in converting colors specified as RGB
> triplets into HSV where it's really easy to adjust the hue while
> preserving the brightness. I found that I could do that with the L*C*h
> color space. L*C*h is similar to HSV in concept, but differs in that
> it's based upon human perception instead of the capabilities of
> display hardware. Therefore it will give somewhat different results
> than one may expect.
> 
> If that sounds like the sort of thing you want to do, you may want to
> take a look at the color-example.scm program included with the egg. It
> contains a bunch of functions to more easily do those sorts of color
> manipulations: e.g. computing color harmonies, scaling the chroma or
> lightness of colors, etc. 
> 
> As I believe those things are what most users would like to be able to
> do, I may release an ezcolor egg that wraps the color egg and exposes
> those functions.
> 
> What do you folks think?

FWIW, when updating the amb egg I added helper macros/functions used by 
examples as exports from a new module, “amb-extras”, You may need to edit the 
color examples for generality but very much suggest the product is useful.

> 
> -- 
> Erik Falor
> Registered Linux User #445632                    http://unnovative.net
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