API problems with krita

[Boudewijn Rempt]

On Wednesday 24 January 2007 18:46, Schleimer, Ben wrote:

> Does this make sense? Is there functionality in krita
> to do this already?

No... But do I understand you correctly that what you basically want to do is 
view the image data by plane? Doing that is a problem with our current 
design. Adobe's GIL is designed to make this easy (but as far as I can tell 
doesn't do much else).

I'm not sure how other raster image applications handle this stuff: I could 
image we could create a "KisChannel" paint device that returns iterators that 
only give back one channel. I should look at how the Gimp implements its 
channels, or ask pippin for good literature. Let's do that right away 
anyway :-)

On a similar topic: we're working in Krita 2.0 to make it possible to 
composite one channel or a subset of the channels of a paint device and to 
run filters on one channel or a subset of channels (that is already partially 
possible, with the color adj. filters, but I want to make that generically 
possible, so you could do a sharpen on just the L channel of an lab image, 
say).

-- 
Boudewijn Rempt 
http://www.valdyas.org/fading/index.cgi
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