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 Post subject: Gimp Tips and Tricks
PostPosted: Wed Dec 05, 2012 10:53 pm  (#1) 
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Following on from some of the discussions of late, I thought it might be a good Idea to have a thread just for sharing tips and tricks we might of picked up along the way, so here is that thread.

I would ask that you don't rely to any of the posts in this thread but rather keep it so that each post contains a tip or trick and therefore will become a valuable resource for Gimpers.If you would like more info on a particular post then maybe you could open up a new discussion topic or search the forums to see if it has already been discussed.

First off then the Colour Selection Dialogue

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Last edited by he4rty on Wed Jan 30, 2013 9:55 am, edited 2 times in total.

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 Post subject: How to insert text from a text file in your image
PostPosted: Thu Dec 06, 2012 1:51 am  (#2) 
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Nice idea, he4rty!


Next tip: How to insert text from a text file in your image.

GIMP won't let you open text files from the Open Image browser window. You won't even see anything but image files.
So, how to insert ready text from a text file instead of typing it?

Activate Text tool and in the tool options choose the font and size you want your text to appear in your image.
Drag a text box over canvas where you want your text to be placed.
Right-click anywhere on the text box area and dialog window will open
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Click on Open text file and choose the text file. Click Open.
Now your text will appear with exact font and size you've chosen.
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Now you can edit your text.
Note: supported formats are .txt and partially .rtf (rtf needs some more editing and removing formatting info)


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 Post subject: Just for fun, configure the Blend Tool
PostPosted: Thu Dec 06, 2012 4:12 am  (#3) 
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Just for fun, configure the Blend Tool :blend with the following settings:
Attachment:
SS-molecules.png
SS-molecules.png [ 15.7 KiB | Viewed 7660 times ]

then paint short strokes on a black canvas to create overlapping spheres:
Attachment:
molecules.png
molecules.png [ 33.12 KiB | Viewed 7660 times ]

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 Post subject: Re: Gimp Tips and Tricks
PostPosted: Thu Dec 06, 2012 4:29 am  (#4) 
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Saul, when you say paint short strokes, are you meaning that you still use the blend tool or the paint brush.
put my settings the same as shown in your post and started with a black bg. I did a short stroke with the blend tool and it turned my layer white. I then tried it with the paint brush and that doesn't work.

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 Post subject: Use Iwarp on the stock wood Pattern
PostPosted: Thu Dec 06, 2012 4:39 am  (#5) 
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Molly, make sure that you have the gradient direction reversed (or that you swap the default colors so that BG is black and FG is white).

Another quickie: use Iwarp on the stock wood Pattern to make it more realistic.

Attachment:
wood.jpg
wood.jpg [ 48.8 KiB | Viewed 7655 times ]


Iwarp also works well with other stock patterns to make interesting textures.
Attachment:
swirly.jpg
swirly.jpg [ 53.37 KiB | Viewed 7655 times ]

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 Post subject: Change amplication
PostPosted: Thu Dec 06, 2012 6:17 am  (#6) 
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My all time favorite is change amplication. Say you have a layer that you dup and may subtle changes like sharpen for blur or whatever. What you do for change amplification is to dup the base (not edited) layer and move it to the top then set the result to Grain Extract then merge down. You will get a grayish like Highpass result. For change amplification, just set the layer to Grain Merge (or for less effect, Overlay). Dup it as many times as you like to amplify the change. I do this so often that it hurts. Can be used for saturation boost too and so many other things that you change. Not sure if a script was ever done for this, but I've discovered this trick accidently many years when I said to myself, what can I use Grain Extract/Grain Merge for. lol

Another thing to experiment with is blurring the change layer to smooth the effect; I do this once in a while to reduce artifacting due to over sharpening change. Sometimes as well, I copy the base layer on top and set it to color, saturation (or twice setting the top layer to Saturation) to keep the colors intact since amplication may cause color abberations. :)

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 Post subject: Re: Gimp Tips and Tricks
PostPosted: Thu Dec 06, 2012 8:27 am  (#7) 
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Just to add to Saul's post, I tried this with different color foregrounds and it gives very nice effects also.


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 Post subject: Mouse Tricks #1
PostPosted: Thu Dec 06, 2012 10:06 am  (#8) 
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Nice Molly and thanks SaulGoode, that's fun to play with something new

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couple of things i do that i'm sure everyone already knows
I hardly ever use the bucket tool, i just drag from the patterns or FG/BG colors onto the canvas or selection
I also use the scroll wheel to change layer modes instead of using the drop down arrow


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 Post subject: Mouse Tricks #2
PostPosted: Thu Dec 06, 2012 10:20 am  (#9) 
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alc59 wrote:
couple of things i do that i'm sure everyone already knows
I hardly ever use the bucket tool, i just drag from the patterns or FG/BG colors onto the canvas or selection
I also use the scroll wheel to change layer modes instead of using the drop down arrow


I use mouse wheel with Alt key (gotta set it in Preferences) to adjust the size of the paint tools, eraser, etc. Find it very useful since i can change size on the fly while drawing a line or erasing.

Here are some other tips that would be helpful for GIMP beginners.
1.Left-click+Shift on eye icon or chain in layers dialog makes visible/linkeded only this layer, click again and all layers become visible/linked.
2.Link a few layers and apply some Transform Tools (Move, Scale and Rotate tools) to a stack of layers. Only linked layers will be transformed.


Last edited by K1TesseraEna on Fri Oct 17, 2014 3:39 pm, edited 1 time in total.

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 Post subject: Keyboard Shortcuts
PostPosted: Thu Dec 06, 2012 1:15 pm  (#10) 
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I love keyboard shortcuts and have a lot of them that I've configured.

Most of the Alt + Keyboard numbers and Alt + Numpad numbers are available to make new shortcuts. The number pad numbers are separate from the keyboard numbers so you have about 20 available Alt + shortcuts. Be sure the NumLock key is on when you use the number pad.

My most recent one is a keyboard shortcut to Discard Text info. It's so annoying to try and add a new text layer to an image that already has one. The text editor jumps up and wants to know if you want to alter the text or make a new layer, etc. My keyboard shortcut prevents that. Discard Text Information is also available in the Layer right-click menu.

I keep a list of my shortcuts handy but most of the ones I use frequently I know by heart.

Access the Keyboard shortcut menu in Edit > Keyboard Shortcuts.

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