Hi Joao, Joao S. O. Bueno wrote: > Actually, I have not dig too deep in GEGL, but for the Graphs idea. You might want to look at Ops as well. > The idea is that one could be able to represent the way pixels in two > (or just one) layers are combined together to be shown on screen, by > a set of simple mathematical expressions. This is exactly what Ops do :) Although Calvin might be able to explain better how they fit into gegl now. I'm sure the code you wrote fits into that plan somewhere. Cheers, Dave. -- David Neary, E-Mail: dneary@xxxxxxx Tél: 04 72 33 95 35 Port: 06 03 98 39 80