Gimp-Forum.net
Compositing/croping question - Printable Version

+- Gimp-Forum.net (https://www.gimp-forum.net)
+-- Forum: GIMP (https://www.gimp-forum.net/Forum-GIMP)
+--- Forum: General questions (https://www.gimp-forum.net/Forum-General-questions)
+--- Thread: Compositing/croping question (/Thread-Compositing-croping-question)



Compositing/croping question - FlipTopBin - 06-25-2018

Using version 2.8 still but can upgrade if it will make things easier:

I am trying to add though bubbles to pictures and have found a nice bubble png I can put on top of my pictures and that works fine.

[Image: bubble.jpg]

The next step is to insert another picture into the bubble, so I drop the thought image on top of the bubble to create a new layer:

[Image: bubble2.jpg]

Now I need to crop the thought image to the central area of the bubble image. I can use the color select tool on the bubble layer to get the cropping area but I cannot work out how to crop the thought layer using that selection to trim the legs in this image to the size of the bubble. As soon as I switch to the thought layer the selection area changes.

Any help appreciated.


RE: Compositing/croping question - rich2005 - 06-25-2018

Not sure what you are doing ie. As soon as I switch to the thought layer the selection area changes Color Select not the best tool for this.

You have your background image - the bubble
You add a layer on top - something with a transparent background.

Make the selection using the background layer, fuzzy select usually works.
example: https://i.imgur.com/SNHmZsh.jpg

Switch to the layer you want to trim.
Invert the selection, Select -> Invert then cut the selection Edit -> Cut
example: https://i.imgur.com/94jy9EU.jpg


RE: Compositing/croping question - FlipTopBin - 06-25-2018

Thats exactly what I wanted to do. Thanks!