On 2010-11-04 00:19, Olivier BERTEN wrote:
...
* I'm not sure yet how to deal with transparency. My first option would
be to say: we're talking about color gradient and transparency isn't a
color attribute, it's an object or painter attribute, so we leave it out
completely. There's the Adobe's option to have a transparency gradient
next to the color gradient but then again, why not really differentiate
things and really separate them... But at least it would cover that
feature because I really think including transparency into the color
definition is wrong.
In my mind a gradient would be something defining one or more piecewise
continuous 1D functions, one for each labelled channel, with an
assumed(!) domain and range of [0,1]. It could be useful to include some
explicit support for color spaces (so you could indicate that a channel
is meant to be the red channel in sRGB for example).
* Is there any free software dealing with noise gradients?
This could be one application for a non-color channel for example. That
is, if you'd allow the amount of noise to vary along the gradient. Blur
could be another. Also, it might be useful to allow "homogeneous"
colors, as used in the context of diffusion curves in this paper:
http://artis.inrialpes.fr/Publications/2010/BEDT10/
As for whether we can handle it. Well... Yes and no. In Inkscape you
could do some heavy filter stuff to sort of get a similar effect, but
it's definitely not supported natively and it would probably be quite
hard to get the exact same effect.
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