Paul259 Posted February 4, 2023 Posted February 4, 2023 (edited) Hi, When I try to invert a pixel selection on the channels tab, the 'marching ants' only appear on two sides of the screen – the right and the bottom. I am running macOS Monterey version 12.6.3. and Affinity Photo 2.0.4. Many thanks for your help, Paul Edited February 4, 2023 by Paul259 Insufficient information Quote
NotMyFault Posted February 4, 2023 Posted February 4, 2023 Hi Paul, welcome to the forum. Sorry to hear about your issue. Can you provide a screenshot? The marching ants don't give an exact representation of the selection in many cases. It’s more a virtual line between areas below or above 50% selection (alpha / transparency). It will only shown on edges where the pixels are select >50%. Quote 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.
Paul259 Posted February 4, 2023 Author Posted February 4, 2023 Hi NotMyFault, Thanks for coming back so quickly. The 'marching ants' are down the right and hand side of the screen and the bottom but not the left hand side of the screen or the top. I don't know if it's a bug in the programme? Many thanks for any help, Paul Quote
lepr Posted February 4, 2023 Posted February 4, 2023 It's a display problem that has always been in the app. When a pixel selection is at edges of the canvas, you'll see the ants appear/disappear from different edges as the zoom level is adjusted. Lisbon 1 Quote
NotMyFault Posted February 4, 2023 Posted February 4, 2023 You can get there quite easy: open an image select all move selection 10% in upper left direction now the marching ants are invisible at two sides this could mean there is something outside the visible canvas. Depending on which edits were made before, this can happen and is no bug. Quote 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.
NotMyFault Posted February 4, 2023 Posted February 4, 2023 (edited) 1 hour ago, Paul259 said: When I try to invert a pixel selection on the channels tab A bit nitpicking: As far as i know, you cant actively invert the selection in channels panel. Only channels can be inverted in channels panel. You can invert selections by keyboard shortcut cmd-shift-I, menu or context menu. Edited February 4, 2023 by NotMyFault This applies to iPad only, not Desktop Quote 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.
lepr Posted February 4, 2023 Posted February 4, 2023 Just now, NotMyFault said: As far as i know, you cant actively invert the selection in channels panel. Only channels can be inverted in channels panel. No, Pixel Selection also can be inverted in Channels panel. There is a little button to do that at right hand side of the Pixel Selection row in Channels panel. 2 minutes ago, NotMyFault said: You can selection invert by keyboard shortcut cmd-I, menu or context menu. No, the shortcut is Shift+cmd+I. Quote
Paul259 Posted February 4, 2023 Author Posted February 4, 2023 Hi, On the main menu, I used the select - invert pixel selection. Thanks, Paul Quote
NotMyFault Posted February 4, 2023 Posted February 4, 2023 4 minutes ago, ,,, said: No, Pixel Selection also can be inverted in Channels panel. There is a little button to do that at right hand side of the Pixel Selection row in Channels panel. Then its a platform difference on iPad (I know this thread is in the Desktop section) lepr 1 Quote 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.
lepr Posted February 4, 2023 Posted February 4, 2023 5 minutes ago, Paul259 said: On the main menu, I used the select - invert pixel selection. That performs the same action as pressing Shift+Cmd+I, and the same action as is in the Channels panel. Anyway, although the missing ants is an annoying display problem, it doesn't affect the actual selection. Quote
Paul259 Posted February 4, 2023 Author Posted February 4, 2023 Many thanks for your help; I think it is a bug in the programme. Quote
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