Hi,

On 10/11/2007, Jürgen Hubert wrote:

When reading about Corel Painter, I've frequently come across a so-called "Digital Watercolor" effect, which apparently simulates how wet paint behaves when you apply color to a canvas - the "virtual pigments" are gradually diffused across the surface of the paper and then absorbed into it over time.

This sounded pretty fascinating, and I was wondering if anyone has attempted to create the same effect with GIMP.

You may want to take a look at Wetdream by Raph Levien: http://www.levien.com/gimp/wetdream.html

As far as I know, it's still not in GIMP, but the author explains quickly some of the integration problems, because of the difference in the way pixels are stored.

Jürgen Hubert wrote:

When reading about Corel Painter, I've frequently come across a so-called "Digital Watercolor" effect, which apparently simulates how wet paint behaves when you apply color to a canvas - the "virtual pigments" are gradually diffused across the surface of the paper and then absorbed into it over time.

This sounded pretty fascinating, and I was wondering if anyone has attempted to create the same effect with GIMP. Or would it require too radical a rewrite of the code? After all, currently GIMP assumes that it doesn't matter _when_ you make a certain stroke with the virtual pen; it doesn't matter if you do a certain stroke two seconds or two minutes after the previous one - the result will be the same. But to implement such an effect, some kind of time-sensitive mechanism would have to be included - or at least, that's my impression from reading about it...

Not specifically GIMP, but take a look at those projects:

http://people.ee.ethz.ch/~mrenold/mypaint/ http://www.goghproject.com/
http://www.koffice.org/krita/

All are free software and like Painter.