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Posted

I've tried the "invert selection" command several different ways, but it's unresponsive.

Is there something I've forgotten to do? Nothing special, just a pixel layer with some stuff painted into it. It's black line art that I want to reverse out to a negative image, that's it. Nothing fancy.

A certain foto editor which I will not name could do this with a keystroke and no backtalk. Why is this so mystifying?

Select a layer, tell it to "invert selection". What's so difficult?

Posted

I’m not sure if Invert Adjustment is what you’re after, or if you’re trying to invert a pixel selection.

Invert Adjustment
https://affinity.help/photo2ipad/en-US.lproj/pages/Adjustments/adjustment_invert.html

Applying Adjustments
https://affinity.help/photo2ipad/en-US.lproj/pages/Adjustments/adjustment_invert.html

Invert pixel selection

 

Windows 10 22H2, 32GB RAM | Affinity Designer/Photo/Publisher 2 (MSI/EXE)

Posted

To invert the colors of pixel within a selected area

  1. create the selection
  2. choose invert adjustment
  3. merge down (optional)
  4. deselect all

 

Mac mini M1 A2348 | MBP M3 

Windows 11 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 | Dell 27“ 4K

iPad Air Gen 5 (2022) A2589

Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps.

I use iPad screenshots and videos even in the Desktop section of the forum when I expect no relevant difference.

 

Posted

This process inverts only areas which are not fully transparent (like the background in my example)

If you want to get the white background inverted (to black), white pixels must be made opaque. Add a fill layer with white color as bottom layer, and use merge visible.

Mac mini M1 A2348 | MBP M3 

Windows 11 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 | Dell 27“ 4K

iPad Air Gen 5 (2022) A2589

Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps.

I use iPad screenshots and videos even in the Desktop section of the forum when I expect no relevant difference.

 

  • 2 weeks later...
Posted

Actually, inverting the area of the selection itself wasn't what I was after.

My goof, perhaps; what I mean is that I wanted to invert the selected portion of the image — that is, create a "negative" of itself.

Posted
1 minute ago, airwhale said:

Weirdly, the option isn't available in the "Select" menu.

It should be the 4th option in the Select menu, named Invert Pixel Selection -

image.png

By default this uses the CMD/CTRL + SHIFT + I shortcut on desktop, but you can customise this in the app settings as required :)

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