Re: [Gimp-user] Selection Across Layers

2007-09-30 Thread Asif Lodhi
Hi,

 Message: 2
 Date: Sat, 29 Sep 2007 12:29:14 -0400
 From: [EMAIL PROTECTED]
 Subject: Re: [Gimp-user] Selection Across Layers
 Quoting Asif Lodhi [EMAIL PROTECTED]:

  I've begun using Gimp again after a long time. IIRC, one (more?) tool
  of Gimp had an option of making a selection that went through all the
  layers right to the bottom layer. And, IIRC, having made that type of
  selection in one of the top layers and performing an operation on it
  would carry out the operation on the combined output of all of the
  bottom layers. May be I am wrong here but I do vaguely recall such an
  option after reading on this list about non-destructive editing
  features of a commercial photo-retouching applications.

 To my knowledge, there are no operations which behave that way ...

That option is Merge or Merged something (I can't recall the full
option name) in the tool options of, for example, Select by Color
and Selection through the Magic Wand. I thought that any operation
on the selection so made would be carried out on the combined output
of all the bottom layers. But I'll explore it more to see if I can
achieve the kind of effect that I described earlier.

--
Thanks  regards,

Asif

p.s. I have Gimp on Fedora-7 and not on Windows that I am using to
connect to the Internet.
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Re: [Gimp-user] Selection Across Layers

2007-09-30 Thread Asif Lodhi
Hi Owen,

 Message: 6
 Date: Sun, 30 Sep 2007 12:51:50 +1000
 From: Owen [EMAIL PROTECTED]
 Subject: Re: [Gimp-user] Selection Across Layers
 The crop tool cuts through them all.

 http://docs.gimp.org/en/gimp-tool-crop.html

Yes, thanks. But I have found the tool option which is probably
called Merged Layers ro something on my Fedora installation. It's
available in the tool-options of Select by Color and Selection by
the Magic Wand tools - and probably one other (more?) tool.

I'll explore it using the docs.

--
Best regards,

Asif
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[Gimp-user] Selection Across Layers

2007-09-29 Thread Asif Lodhi
Hi,

I've begun using Gimp again after a long time. IIRC, one (more?) tool
of Gimp had an option of making a selection that went through all the
layers right to the bottom layer. And, IIRC, having made that type of
selection in one of the top layers and performing an operation on it
would carry out the operation on the combined output of all of the
bottom layers. May be I am wrong here but I do vaguely recall such an
option after reading on this list about non-destructive editing
features of a commercial photo-retouching applications.

Any help/hints?

--
Best regards,

Asif
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Re: [Gimp-user] Selection Across Layers

2007-09-29 Thread saulgoode
Quoting Asif Lodhi [EMAIL PROTECTED]:

 I've begun using Gimp again after a long time. IIRC, one (more?) tool
 of Gimp had an option of making a selection that went through all the
 layers right to the bottom layer. And, IIRC, having made that type of
 selection in one of the top layers and performing an operation on it
 would carry out the operation on the combined output of all of the
 bottom layers. May be I am wrong here but I do vaguely recall such an
 option after reading on this list about non-destructive editing
 features of a commercial photo-retouching applications.

To my knowledge, there are no operations which behave that way.

If you have installed the GAP (GIMP Animation Package) then you can  
use the Filter All Layers... command but this is limited to only  
those filters which are specially registered with this capability  
(i.e., it does not work with tools such as Move or Rotate, nor with  
most third-party scripts). It is a very useful utility and nearly  
all of the GIMP's core filters ARE available.

In version 2.4 of the GIMP (which is in the final stages before  
release), if you have a selection and the active layer is linked to  
other layers, performing a Transform (rotate, scale, perspective,  
skew, or flip) will affect the contents of the selection on the active  
layer but will affect the entirety of the other linked layers. I can't  
recall if version 2.2 behaved this way.

The Move tool behaves differently in that it is not possible (in  
version 2.4) to use it to move the contents of the selection; and the  
established method of doing so (using the Selection tools) does not  
honor layer linkages.

In order to Move or Transform the selection contents across multiple  
layers, I have written a Script-fu which will float the selection  
for each linked layer.  Once they are floated as separate layers, the  
floated layers can be Moved or Transformed as a group (the script  
links the floated layers) and subsequently merged back down to their  
original layers.

My script is quite a kludge: you must be careful with any changes to  
your layerstack while the selections are floated, and some blending  
modes of layers will not behave as expected. If interested, you can  
read more about the script at  
http://www.gimptalk.com/forum/topic.php?t=13996start=1

In general, if you find yourself operating in a manner such that this  
script is useful then I would recommend that you rethink your overall  
approach to what you are editing and try not to have objects which you  
wish to treat separately sharing the same layer to begin with.

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Re: [Gimp-user] Selection Across Layers

2007-09-29 Thread Owen
On Sat, 29 Sep 2007 08:32:47 +0500
Asif Lodhi [EMAIL PROTECTED] wrote:

 Hi,
 
 I've begun using Gimp again after a long time. IIRC, one (more?) tool
 of Gimp had an option of making a selection that went through all the
 layers right to the bottom layer. And, IIRC, having made that type of
 selection in one of the top layers and performing an operation on it
 would carry out the operation on the combined output of all of the
 bottom layers. May be I am wrong here but I do vaguely recall such an
 option after reading on this list about non-destructive editing
 features of a commercial photo-retouching applications.
 
 Any help/hints?


The crop tool cuts through them all. 

http://docs.gimp.org/en/gimp-tool-crop.html



Owen
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