Filters : Preview and Adjustement Layer

[Moritz Moeller]

Cyrille Berger wrote:
> In fact what we need is a random number generator that allways return the same 
> value for a pixel (for a given seed). A ugly possibility would be to do 
> something like qsrand( xpixel * ypixel + seed); randum_number = qrand(); A 
> more elegant alternative would be to have a KisRandom class with a function 
> returning the random number for each pixels.

That's how we do it in 3D rendering:
http://www.affine.org/cellnoise.html

Basically a Perlin-style noise implementation w/o any interpolation.

.mm