[Gimp-developer] copy-paste: position shift with alpha images
Hello, I just wantet to copy a rectangle area from a source-layer to a target layer of an image. That's what I done first: (gimp-rect-select image 0 0 layer-width height REPLACE FALSE 0) (gimp-edit-copy source-layer) (let ((floating-sel (car (gimp-edit-paste target-layer FALSE (gimp-floating-sel-anchor floating-sel)) This works for a lot of cases BUT if I have an image showing a figure on a transparent background (with alpha channel), something strange happens: The position of the figure on the target-layer is shifted (an the only the figure itself is selected) It only works if the bounding box of the visible parts equal the selection. I got the same results using the GUI (also with select-all). How can I avoid this? Is there a faster way to transfer the layer contents to another layer, avoiding the intermediate step of the buffer? Thanks Martin -- __ Martin Bernreuther [EMAIL PROTECTED] ___ Gimp-developer mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
[Gimp-developer] script-fu-scheme: Full implementation of Scheme?
Hello, the tutorials I found cover a small portion of the Scheme language. Often there's not even a conditional call (if) or loop like (while) explained (but they are nice introductions!). At http://www.swiss.ai.mit.edu/projects/scheme/documentation/scheme.html there's a reference manual, but I didn't manage to get some functions... to work. How about e.g. the (do) statement or (floor -4.3) (round -4.3)at scheme_5.html#SEC56 ..? It didn't work at the GIMP 1.2.3 script-fu console Is there a reference manual of the script-fu implemented Scheme? Thanks Martin -- __ Martin Bernreuther [EMAIL PROTECTED] ___ Gimp-developer mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
Re: [Gimp-developer] script-fu-scheme: Full implementation of Scheme?
On Wed, 30 Oct 2002, Martin Bernreuther wrote: At http://www.swiss.ai.mit.edu/projects/scheme/documentation/scheme.html there's a reference manual, but I didn't manage to get some functions... to work. How about e.g. the (do) statement or (floor -4.3) (round -4.3) at scheme_5.html#SEC56 ..? It didn't work at the GIMP 1.2.3 script-fu console Is there a reference manual of the script-fu implemented Scheme? Gimp currently uses SIOD, which is a nonstandard implementation of Scheme with some of the standard Scheme functions, some functions imported from C, and some just plain strange stuff (what is the MD5 calculator doing in a lightweight scheme implementation?). A hodgepodge of stuff, really. Then, of course, there is the gimp extensions to it, which are rather strange in of themselves... Anyway, the definative reference for SIOD is now http://people.delphiforums.com/gjc/siod.html (it took some poking around to find that site -- most people refer to an older document at indiana.edu) Rockwalrus ___ Gimp-developer mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
Re: [Gimp-developer] script-fu-scheme: Full implementation of Scheme?
However, not all of SIOD is implemented in the GIMP. Specifically, all of the stuff that requires a platform specific implementation is missing. These functions were marked with a U in the old Indiana doc. I don't know if that's true on the newer site referenced below. s/KAM - Original Message - From: Nathan Carl Summers [EMAIL PROTECTED] To: Martin Bernreuther [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Wednesday, October 30, 2002 4:32 PM Subject: Re: [Gimp-developer] script-fu-scheme: Full implementation of Scheme? On Wed, 30 Oct 2002, Martin Bernreuther wrote: At http://www.swiss.ai.mit.edu/projects/scheme/documentation/scheme.html there's a reference manual, but I didn't manage to get some functions... to work. How about e.g. the (do) statement or (floor -4.3) (round -4.3) at scheme_5.html#SEC56 ..? It didn't work at the GIMP 1.2.3 script-fu console Is there a reference manual of the script-fu implemented Scheme? Gimp currently uses SIOD, which is a nonstandard implementation of Scheme with some of the standard Scheme functions, some functions imported from C, and some just plain strange stuff (what is the MD5 calculator doing in a lightweight scheme implementation?). A hodgepodge of stuff, really. Then, of course, there is the gimp extensions to it, which are rather strange in of themselves... Anyway, the definative reference for SIOD is now http://people.delphiforums.com/gjc/siod.html (it took some poking around to find that site -- most people refer to an older document at indiana.edu) Rockwalrus ___ Gimp-developer mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer ___ Gimp-developer mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
Re: [Gimp-developer] script-fu-scheme: Full implementation of Scheme?
On Wed, 30 Oct 2002, Kevin Myers wrote: However, not all of SIOD is implemented in the GIMP. Specifically, all of the stuff that requires a platform specific implementation is missing. These functions were marked with a U in the old Indiana doc. I don't know if that's true on the newer site referenced below. The big U is in the new doc as well. It's not completely reliable, though -- a few of the big U's are in script-fu, and a few of the functions not marked with a U as missing as well. datlength and datref are the only ones I can remember that aren't marked with a U and aren't present. (Which is annoying, since datref can be useful for parasites.) Rockwalrus ___ Gimp-developer mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
Re: [Gimp-developer] copy-paste: position shift with alpha images
Hi Martin - First, your questions would be better directed to the gimp-user (instead of gimp-developer) list. And I can also recommend the script-fu group on yahoo. To answer your question: you can avoid creating the intermediate variable by doing (gimp-floating-sel-anchor (car (gimp-edit-paste target-layer FALSE))) To ensure that your selection winds up in the same place in the new layer, try (if you can) making sure that the layer from which you get your selection is the same size as the image, using (perl-fu-layer-to-image-size 1) . This works on the active layer only, and may not work on windows systems lacking perl-fu support. HTH, -- --Jeff Jeff Trefftzs [EMAIL PROTECTED] http://www.tcsn.net/trefftzsHome Page http://gug.sunsite.dk/gallery.php?artist=68 Gimp Gallery http://trefftzs.topcities.com/ Photo Gallery ___ Gimp-developer mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
Re: [Gimp-developer] script-fu-scheme: Full implementation of Scheme?
I've posted the siod documentation that I use on my website at http://trefftzs.topcities.com/siod.html It also shows functions that are not available in the Gimp, but fewer than your source. I seem to remember that I had to roll my own floor, ceil, and round functions. Good luck. -- --Jeff Jeff Trefftzs [EMAIL PROTECTED] http://www.tcsn.net/trefftzsHome Page http://gug.sunsite.dk/gallery.php?artist=68 Gimp Gallery http://trefftzs.topcities.com/ Photo Gallery ___ Gimp-developer mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
[Gimp-developer] how does undo currently work
Suppose 100 actions are done to an image of size T Would gimp's memory increase by 100T ? Or is there some intelligence done for the undoing? ___ Gimp-developer mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
