Solved

i believe the problem was just in the gimp code, the version in git change everyday, and today version compiled with no problem

but i am even more happy, before compile i did a few change in the code of a few plugin and instead then the disaster i feared it was successful

are you curious ?
here the changes
enlarge both to see the difference!

before





after





i did the same for all this plugin

epth merge

flame

fractal explorer

fractal trace

gradient.flare

lighting effect

map object

depth merge

now all works with a quite big preview

Bad new:
apparently plugin for 2.7.2 are not backward compatible, so will not works on 2.6
i didn't check yet if they will work with gimp 2.7 on other one computer

OOOPSS ...too enthusiasm i uploaded the wrong pics,,,corrected now

That's cool. Don't have the intestinal fortitude to delve into the code side PC. I'm just a poser w.r.t. that. I do hope in future versions of GIMP that the developers offer either user defined, scaleable, or bigger previews with standard GIMP filters anyway, but I'm not holding my breath.

Maybe you will have not to wait much, if the test are positive i may compile also for gimp 2.6 (but at first only for Ubuntu/Debian)

And then i believe that the diffusion of a such trivial but effective hack will push some developers to do better replacing that obsolete preview (but now quite big on my screen ...map object has now a 600x400 preview, and that apparently fixed also a preview bug ) with modern resizable and zoomable ones.

i mean i don't know any C i only knew that somewhere in that plugin code were 2 hardcoded values to trace and modify,hopefully close to a word beginning with "preview"

Just a tip I discovered today after I did a git pull and it wouldn't compile.

After pulling, do a


and then (with your $PREFIX environment variable set to the install location) a


before


-Rob A>

Wow PC!
I would love to have those large previews in Windows version plug-ins.

i would like to share but actually for some reason the binary i compiled don't work on other computers.

well maybe the problem is that i didn't compile the plugins i but i compiled all gimp, and then copied the plugin binary from the plugin folder...and that didn't work

Anyway i am a novice about compiling, i am going to upload the source hoping that other more expert would get more success
(i didn't yet just because i was very busy doing some checking)

The good new is that once successfully compiled for linux should be easy crosscompile also for win

Awesome, thanks PC. =)

2, fractal trace and depth merge are ready now
http://www.box.net/shared/tq1h36tjym

you will see not 2 but 4 file, that with the name containing P4 are for pentium4 and with SSL support
the other are more generic (so in case of doubt use this last )

A last note remember first to move away the original plugins

Do these plug-ins go in the GIMP 2.6 plug-in folder.....

yes
and first move away that with same name already there
(i suggest to move away and not just overwrite just as precaution )

thanx PC

I overwrote mine and didn't have any problems PC. =)
Just in case anyone wanted to know.

I got it but now I don't know what I am supposed to do with it. Or in plain language, what is it for?

Fractal Trace transform a image in a fractal, depth merge may combine 2 images in 1
here a clear description, also of possible options
http://docs.gimp.org/2.6/en/plug-in-fractal-trace.html
http://docs.gimp.org/2.6/en/plug-in-depth-merge.html
(here scroll the page for visual examples )

very good, thanx PC. I love the one with the flower with all the small flowers around it.... cool. I would like to try that with this kitten, without distorting the face or body. I played around with the settings but can't seem to get it without doing that.

to this:

use depth merge and add them together. =)

so cute, thanx Rod

You are very welcome, is that your kitty? =)

Hope you don't mind a little play at the expense of your cat Molly. First I did a not so good extraction then used {x/2,0}, {0,y/2}, {x/2,y/2} technique to create the seamless texture. Then I used Mathmap and Fractal Trace to create the mandelcat texture (which I made seamless to boot). I then used that texture to create the catworld using Mathmap.