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Using GIMP
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 Group admin 
Any questions about using GIMP put them here.
First of all I know how to cut around an object and add it to a background. But the background is white. So how do you add a picture background? And say that in the model you are cutting out there is something that you need to cut around on the inside of the model how do you do that? Every time I so that it only takes the object I just cut out and not the model as a whole.
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| March 13, 2013, 4:54 pm
 Group moderator 
Quoting Garett Smith
Any questions about using GIMP put them here.
First of all I know how to cut around an object and add it to a background. But the background is white. So how do you add a picture background? And say that in the model you are cutting out there is something that you need to cut around on the inside of the model how do you do that? Every time I so that it only takes the object I just cut out and not the model as a whole.

Hey, Garrett. Nice to hear from you again. You have the basics down for GIMP, and understand that I am not too far beyond the basics myself, but I will answer as best I can here.

First off, there are a few ways to add your picture to a background. I’m assuming that you are using the Lasso Tool to cut around your MOC. The first way is just to copy/cut whatever you’ve surrounded with the Lasso Tool and paste it to the new background. I don’t recommend that way because your added pic will have a certain amount of transparency to it, and that gets to be a bit tedious to fix.

The second way is how I did it when I was first learning GIMP. You outline your MOC with the Lasso Tool. Once the lasso is all the way around your MOC, hit CTRL+I, which will invert your selection. Hit Delete. That will change everything around your MOC to the background color, most likely white. Then click on the fuzzy select tool and click in the white area around your MOC. The dotted lines should be all the way around your “canvas” and your MOC. Right click anywhere on your picture and go to “Layer.” On the next menu go to “Transparency.” From there, click on “Color to Alpha.” A window will pop up with a color box that should be set to white, (or whatever the background color is). Click “OK.” That will change your background to an Alpha Channel, which allows anything on the layer beneath it to shine through. If you don’t have a layer beneath it, it will be a grey and dark grey grid. Go to the top of the screen to “File,” click, “Open as Layer,” and open what you want your background to be. Set that layer to be beneath the layer with your MOC on it and that should give you the effect you’re looking for.

The third way is the way that I do it. When you open the pic of your MOC, right click on the layer in the “Layers, Channels, Paths, Undo” window that has your MOC on it and select “Add Alpha Channel.” Then, after you use the Lasso Tool and hit CTRL+I, hit delete and the background surrounding your selection will change to an Alpha Channel. Repeat the steps in the paragraph above. The key to showing your MOC clearly on a different background is the Alpha Channel.

As to the multiple selections on one pic, I have not discovered how to cut out two separate selections at the same time. You will have to cut each section separately. If there are two items you want to cut from the layer and still use them, I would recommend removing the first one and adding it to another layer, and then doing the same for the other selection. I was a little hazy as to what you were asking there, so hopefully that covers it.

Also, search the web and YouTube for instructions and demos of whatever you’re trying to do, you may find your answers that way. GIMP is fun but can be confusing if you’re just learning how to use it, and that’s how I learned a lot of what I’m doing. That and a lot of trial and error, as well as banging my head on the desk, tearing my hair out, some soft crying in the fetal position, severe weight loss, raging at nobody in particular in public places, and alienating those around me. I would be happy to answer any other questions you have to help you avoid those last parts:D

If I wasn’t clear in any of this, let me know, I will try to explain better. GIMP is also great for creating your own backgrounds. Especially space backgrounds. Check the web for free GIMP brushes and see what you can find. There are some really cool cloud, nebula, planet, and star cluster brushes out there for enhancing your backgrounds.

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| March 14, 2013, 5:01 pm
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