Intersecting masks

Will ‘Intersect’ option work only within same layer like Add and Erase (Brush) feature or between masks from different layers or both?

My suggestions to make this mechanism robust are,
Intersection between masks in selected single Layer:

1. Intersection between - a). Gradient masks b). Gradient and pixel-based (brush) masks c). (of course) pixel-based masks.

2. Rasterization of Gradient Masks to be eliminated. This will allow Add, Erase and Intersect operations within the same layer.

3. Add Icon for Intersect command and associate Shift or Ctrl (cmd) key.

Intersection between masks between 2 layers:

1. Like Copy Mask from options add right-click options on target layer for all three operations - Add, Erase and Intersect to choose mask from another layer. Don't rasterize parametric layers.
   
   

My request to CO is to use this opportunity and revamp the framework.

Hi. Thanks for the request and all the comments. I want to let you know that we are actively working on this.

Not just intersect, all set theory overlays should be supported: intersect, union, difference, and symmetric difference

Here is a discussion of these overlay types (for GIS layer overlays, but the idea is the same): https://autogis-site.readthedocs.io/en/latest/lessons/lesson-4/overlay-analysis.html

Use case(s):

You have a layer with a gradient for the sky, and another for a subject. You don't want the sky gradient to affect the subject, so you need to subtract (difference) the subject mask from the sky gradient mask.

You've got two separate layers and want to combine them (union)

etc.

I'll gladly add my vote that this. Right now, I am working on a photo of a model with a big head of hair. Whether I do a subject mask or hair mask, the blue of the wall behind abundantly peeks through the outer edge of her hair. The AI used in the hair mask is not bad, especially when the contrast is high, but intersecting could be used in countless situations.

Merging should be supported as well. Sadly, the people influencing C1 developement seem to be focused on 1-click adjustments and "one size fits all" edits, so don't hold your breath for anything supporting custom work on single images.

Yes, this is would be huge time saver! So many use cases. Usually I want to only make brush stroke masks or gradial masks to the background or to the subject. It makes end result so much cleaner when background and subject can be separated. For example darkening side of the face but not darkening the background.

I would like to be able to apply a gradient to an AI mask. Right now workaround with a soft erase brush after the mask is created.

There are multiple other feature requests on this topic.  It would be best to find those and upvote them rather than split the attention across many posts.

Support this. I use Affinity Photo for this type of masking, but it doesn't have AI masks yet. And its another step with more files created. Anything architectural I need to make selections and have gradients over that selection. Can sometimes work around in C1 using AI eraser but something direct would be better.