Moin .. I e written the python-fu to to that. If someone else is interested, just mail me. On Monday 29 November 2004 22:25, Joseph Heled wrote: > (I think this has been discussed on the list before, but not sure > where/when.) > > What is the best way to achieve the following functionality - > > Given two layers L1 and L2, I want L2 limited by it's distance > from L1 > > Result <- L1 - MIN( MAX(L1 - L2), -20), 20) > > (This expression uses L1/L2 as placeholder for each pixel in all > RGB channels) > > Options: > > A. Write a plugin > > B. Write it as a script-fu (not sure if script-fu can iterate on > pixels, and what is the speed implication). And I hate scheme. > > C. Write it in python fu if I can compile it, but even though it is > probably not as universally available as scrip-fu. Can I iterate > over an image in python-fu? > > D. I know I can do it with 5 layers and overlay modes. write this > as a script-fu. Not elegant and requires loads of memory for large > images. > > Layer Mode > > L1 Grain Merge > 148 Darken Only > 108 Lighten Only > L1 Grain Extract > L2 Normal > > (148/108 stand for a layer filled with gray pixels > (148,148,148)/(108,108,108) > > E. Write a generic framework which allows any kind of expression(s) > between layer(s) (Only kidding ...) > > F. Anything better? > > > -Joseph > > > _______________________________________________ > Gimp-developer mailing list > Gimp-developer@xxxxxxxxxxxxxxxxxxxxxx > http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
