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GIMP/GL QuestionsHelp with layer masks (Showcase | Slideshow)

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gnerd

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Help with layer masks

Post#1 by gnerd » 13 Sep 2017, 20:25


I'm working on a pumpkin (glass no surprise there :lol: ) But when I create the color texture of the pumpkin it creates the color in the leaf and stem. So I have the pumpkin orangish but so are the leaf and stem. Basically how can I change the colors of those 2 items without effecting the pumpkin?
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Post#2 by tim » 13 Sep 2017, 20:43


You can try free select tool and select the leaf and stem and work with that selection. Maybe i am not understanding what you're trying to do.
Or duplicate your layer with layer mask and on the mask of the new layer paint the pumpkin with pure black to make it not show at all (has no effect because it's mask is black) and then work with stem and leaf on that new layer.
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Post#3 by gnerd » 13 Sep 2017, 20:47


That's possible Tin, thank you for the suggestion, never hurts to try!! Paths and masking I've always shied away from, just can't figure them out.
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Post#4 by RJKD » 14 Sep 2017, 02:29


Not sure if I've got this correct, however if you're running BRL you may have to run 2, one each for the body and one for the stem on separate layers?
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Post#5 by gnerd » 14 Sep 2017, 06:24


ThankS RJKD, I am running BRL on it. I'll give both ways a run, if nothing else I may hit upon one of those happy accidents lol.
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Post#6 by animicule » 14 Sep 2017, 06:59


Masks can be very easy.
Have your subject open.
In the lower left corner, just below the subject is a little square.
Click the little square and 'Quick Mask' comes open.
There are different ways to use it, but what I do
after quick mask has made your image look redish when it opens with defaults:
Set the foreground color to whte
Use the eraser tool with the FOREGROUND color set to white.
It erases the Red and that which is not red will be your selection.
What you erase becomes your selection - (easier for me to see
when using this way)
When done selecting you click on the little square again and quick mask closes.
You will now see your selection with the marching ants surrounding it.
Now you can do <ALT>S then P and it will save your selection as a path,
or you can do <CTRL>X and it will delete your selection from the subject layer,
then <CTRL>V and it will make your selection a floating selection,
then you can click the 'new layer' icon at the
bottom of the layers window and your selection will be a new layer.
At the same time it will have been removed from your subject if
you chose the <CTRL>X
You will have the selection as a path in case you need to
start over (that way you don't have to redo the quick mask and selecting)...
After your done with the leaves, then do the stem the same way
and do the <ALT>S P and now you will have 2 path.
If you need to use one of the paths, from the path tab (in the top
of the layers area, select it, then right click and choose Path to
Selection -- then you will have your marching ants on which ever
layer you are using.
Using paths like this is easy, not like creating a path with the path tool,
but using the path tool give you a better result on fine work.
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