From: Sven Neumann <sven@xxxxxxxx>
To: "Joao S. O. Bueno" <gwidion@xxxxxxxxxx>
CC: gimp-developer@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [Gimp-developer] Grain modes are just the beginning - was McFarland's Re: Startup Notification support...
Date: Tue, 29 Jul 2003 10:38:02 +0200
Hi,
"Joao S. O. Bueno" <gwidion@xxxxxxxxxx> writes:
> For example, this is the line in current gimp code that does the > "merge mode" : > > sum = src1[b] + src2[b] - 128; > > It will be doable by typing: > ED = E1 + E2 -0.5; > > as the custom layer mode. (E stands for "every channel". A is already > used for alpha - I myself dislike the "every", and will accept other > suggestions) > > The advantadges? Even the above formula throws information away - it > kees a better average than ADD layer mode. With the custom layer > mode, you willbe able to adjust the cnstante factor for every layer > on every image. > Thus if it is too light, with large white only areas, one will just > have to edit the layer mode expression from the above to: > ED = E1 + E2 -0.7; , for instance.
I don't want to discourage you and it's certainly a nice expert/geek feature but I doubt that the casual GIMP user wants to type in any formulas.
Sven
well, it's certainly something that is of interest to me, and surely it wouldn't be a problem to have the extra layer modes at the bottom of the drop down list as well as a create new mode option which can optionally add it to a user list of modes or just save it in the XCF being processes.
just an idea, and sorry if it's already been covered.
Phil.
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