Re: [Gimp-developer] Gimp from git Gegl Gaussian Blur and Unsharp Mask useability issues

[Teo Mazars <mazarst ensimag grenoble-inp fr>]

> This Gaussian blur slider range doesn't really allow slider selection
> of
> small, precise values less than 1, so typing in values is still
> necessary. A logarithm-type scale might be better than a linear scale
> as
> the useful range for blur necessarily is large, and the larger the
> image, the larger the useful range.

[...]

> The other gegl_chant_double_ui values are pretty obvious. What does
> the
> value "1.5" do?

The "1.5" is the UI exponent you were asking for in Gaussian Blur, 1.0 is linear. If 1.5 is not enough, you 
may try 2.0 or larger. For the slider step problem, I don't know much about that sorry... I think the new UI 
values you suggest are good. So please, try some more by tweaking the exponent and you can commit directly to 
GEGL master those changes, if you want.

> A way to type in values without risking accidentally causing a very
> large radius operation would be very welcome.

Agreed, I am not sure how to solve that though...

> I wonder what values other people might find useful for Gaussian blur
> and USM? I have a 10MP camera. Someone with a 30 or 40MP camera
> probably
> would need a larger range, which is one reason why user-settable
> ranges
> might be a nice feature. Different styles of processing would be
> another.

I agree too, but this is also an UI problem and I am really not an expert. A reasonable arbitrary UI range + 
exponent is already a step forward.

Thank you,

Téo