On 9 September 2014 09:02, Maurizio De Santis wrote:

Hello,

I would like to know if it is possible to some pixel to a selection by clicking on that pixel; I didn't find any way to do it.

You can use any painting tool to directly drawing the selection if you use the "quick mask" - just click on the icon to the left of the horizontal scroll bar to activate it (and back to switch to normal selection view). The way to select individual pixels is to use a size 1 brush with the pencil tool.

Alternatively, if the pixel is a distinct color from its surroundings, you can use the "magic wand" (contiguous selection) tool.

--

Maurizio De Santis
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On 09/09/2014 08:02 AM, Maurizio De Santis wrote:

Hello,

I would like to know if it is possible to some pixel to a selection by clicking on that pixel; I didn't find any way to do it.

I hate it when that happens, one time I accidentally my whole.

One way would be to use the Quick Mask function: It's a little button at the lower left corner of the image window: Click once, and your selection becomes the clear part of a transparent red overlay on the image.

Use the paintbrush tool to paint in White on the mask, to add to your existing selection (or make a new one). The newly selected area will show as fully transparent, looking through the red overlay. Paint in Black on the mask, to subtract from your selection.

Click the button that turns the mask on, to turn it off. This converts the transparent parts of the mask into a normal selection.

Here's a nice little video tutorial - but I kept wanting to click on that button in the lower left corner of the image window when the guy was using the Select menu to "Toggle Quick Mask" off and on!

https://www.youtube.com/watch?v=XTJw_un1IqY

The official manual page:

http://docs.gimp.org/2.8/en/gimp-image-window-qmask-button.html

:o)

Steve

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