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Hi, i need some help for a quick worflow.

I want to correct the distortion from eye glasses wich tend to heavily shrink the area below. Usually, I start with the pen tool to model the shape of the glass. I raster the shape to a mask, merge visible, to get the distorted area. Then i have to strech this area by ~10-20%, and re-use the mask again.

 

Now to the problem:

When i apply the mask before streching, the mask will be streched, too. This is unwanted.

Otherwise, when i stretch the layer without mask applied, a cannot visiually check the ammount of strech required.

 

Comming to my question:

Is it possible to lock a mask (applied to a pixel layer), so that the mask will not be affected by any operation applied to the pixel layer?

 

Thanks in advance for any hint.

 

BTW: i love AF, 1.7.1 is a great update.

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Mac mini M1 A2348 | Windows 10 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5

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.

 

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I don't think that's currently possible.

That said; as a workaround you could just temporarily drag the masklayer out of its pixel-layer, scale the pixel-layer and drop the masklayer back on the pixel layer. That way your masklayer-shape is still the same while your pixel-layer is streched.

 

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I can reach the desired effect by a more complex indirect workflow.

In principle, i have to invert the mask, and apply it to the background. Then the pixel layer wich must be streched can be positioned below the background, and streched, with full visible control of the streching.

This might work well if the rest of the image is a simple pixel layer. Otherwise, in case of a complex bunch of layers, this method gets ugly, or requires a "merge visible" and thus breaking the principle of non-destructiveness.

Mac mini M1 A2348 | Windows 10 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5

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.

 

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  • 2 weeks later...

I found a solution: the “transformation” menu, and “Transform separately” is just what I was looking for ;-)

 B04AC299-8A40-421B-8AB4-7EFBE80E337A.thumb.jpeg.5b6f93af104038e5a7f7d2c28f35402e.jpeg

Mac mini M1 A2348 | Windows 10 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5

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.

 

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5 hours ago, NotMyFault said:

I found a solution: the “transformation” menu, and “Transform separately” is just what I was looking for ;-)

 B04AC299-8A40-421B-8AB4-7EFBE80E337A.thumb.jpeg.5b6f93af104038e5a7f7d2c28f35402e.jpeg

Where in Affinity Photo is this menu?

Affinity Photo 2.4..; Affinity Designer 2.4..; Affinity Publisher 2.4..; Affinity2 Beta versions. Affinity Photo,Designer 1.10.6.1605 Win10 Home Version:21H2, Build: 19044.1766: Intel(R) Core(TM) i7-5820K CPU @ 3.30GHz, 3301 Mhz, 6 Core(s), 12 Logical Processor(s);32GB Ram, Nvidia GTX 3070, 3-Internal HDD (1 Crucial MX5000 1TB, 1-Crucial MX5000 500GB, 1-WD 1 TB), 4 External HDD

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4 hours ago, Ron P. said:

Where in Affinity Photo is this menu?

It's the iPad version.

All 3 1.10.8, & all 3 V2.4.1 Mac apps; 2020 iMac 27"; 3.8GHz i7, Radeon Pro 5700, 32GB RAM; macOS 10.15.7
Affinity Photo 
1.10.8; Affinity Designer 1.108; & all 3 V2 apps for iPad; 6th Generation iPad 32 GB; Apple Pencil; iPadOS 15.7

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In Windows (and Mac), its a bar only visible with move tool active. Look out for "Lock Children"

 

af move transform seperately.JPG

Mac mini M1 A2348 | Windows 10 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5

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.

 

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