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layers question

Mar 24, 2012, 17:58 (This post was last modified: Mar 24, 2012 18:01 by robozo.)
Post: #1
layers question
hello everyone

i like to brush over pencilled drawings, now the problem i have is that the pencils tend to not show up as clearly after beeing overpainted. can i copy the pencildrawing off the background, and after brushing the other layers fix it onto them, so the pencil lines show up clearly? if yes, how would i have to do this?

thanks a lot and greetings robozo
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Mar 24, 2012, 22:26
Post: #2
RE: layers question
I'm not super knowledgeable, but I have done this by selecting the background of the penciled layer and inverting my selection to copy. Even better, if you draw the pencil directly on GIMP and aren't using a scan of a hand drawing, simply make sure you do it on a transparent layer. That way you can simply put that layer on top or put a copy on top. Another thing to try is using the modes. I can't say which one to use, but play with them and you will certainly find one (or many) that you can use and perhaps one of them will be the effect you are trying to achieve with the brush over pencil. If you are using more than the two layers and don't want the others involved, turn off the visibility of the others and when you have the effect you want, copy visible to a new layer and use that. I would save my original layers until I knew I was completely finished (or actually forever), but keep them invisible until/unless I discovered I need them again.

Was this the kind of information you needed? Is it clear enough?
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Mar 25, 2012, 02:08
Post: #3
RE: layers question
(Mar 24, 2012 17:58)robozo Wrote:  hello everyone

i like to brush over pencilled drawings, now the problem i have is that the pencils tend to not show up as clearly after beeing overpainted. can i copy the pencildrawing off the background, and after brushing the other layers fix it onto them, so the pencil lines show up clearly? if yes, how would i have to do this?

thanks a lot and greetings robozo
Something to try is to transform your black on white drawing into black on transparent. To do this:

- Use the color picker to sample your background color (use the "sample average" options with a large radius) and have it set your foreground color
- Use Layers/Transparency/add alpha channel to allow transparency on that layer
- Start "Colors/Color to alpha", click on the big color button, and in the color selector that opens, click on the color picker button, and then click on your foreground color indicator in the Toolbox.
- Click OK
- You should now have a layer mostly transparent except on the pencil lines
- Add a new layer
- Push it under the pencil layer
- Make it active to paint on that layer: you'll paint "under" the pencil.

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