Hi Stephane,

On Nov 20, 2007 10:10 AM, Stephane Chauveau
> Hello,
> I just got an idea about the curve tool: Why not use it as a selection tool?
> Apart from The Gimp, I do not know a lot of image manipulation programs
> so the feature might very well be common.
> I see it like that:
> A new tool called the 'curve selection' would be added probably in the
> Select menu.
> Like the original curve tool, the 'curve selection' tool would provide
> several curves for the different properties of the current layer (see
> the list below).
> The value of each curve would not provide a transformation of the
> property but an amount of selection (from 0.0 to 1.0) according to the
> property.
> The result of the curve selection tool would be a selection mask
> obtained by multiplying the values of all curves.
> For most curves, the initial value value would not be the identify
> function 'f(x)=x' but 'f(x)=1.0'.
> The following curves could be provided:
>    - Red , Green and Blue  ( default  f(x)=1.0 )
>    - Hue, Saturation, Value/Lightness/Brightness  (default  f(x)=1.0)
>    - Initial Selection Mask ( default f(x)=x )
>    - Alpha (default f(x)=1.0)
> With those defaults, the overall default result would be the initial
> selection mask.
> Because of it circular nature, the Hue curve may require a specific
> treatment.

I don't understand your explanation of how this would work. How about
showing some example results?
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