Hi there
I would like to have selection without alpha.
In this case you would select around the painted area discarding alpha information.
Thanks Mic
Hi there
I would like to have selection without alpha.
In this case you would select around the painted area discarding alpha information.
Thanks Mic
I'm not quite sure what you mean when you say 'discarding alpha information' - Selection sets themselves ignore alpha but if you're talking about copying the contents of a selection set do you mean that you want the contents copied to include all visible layers (including the canvas), or that you want the copy to only include the contents of the layer itself? If you could explain the intended effect of what you're asking for I should be able to understand a bit better.
Hi Matt
Let say I have a watercolor blob (of any size) on a layer. Since it is watercolor there will be alpha information in the blob.
Here is the equivalent of what I want with to many operations:
1. Select layer content
2. Invert the selection
3. Make a new layer
4. Fill selection on new layer with paint bucket (This layer only)
5. Make stencil from layer content
6. Invert the stencil
I now have a mask around the blob with no alpha information inside the hole.
It would be much faster to have "Select layer content without alpha" (featherd)
Hope it is clearer
Thanks
Mic
Last edited by Micmac; 03-18-2016 at 11:57 PM.
Not sure I follow your steps: When you create a selection from the layer contents, the alpha of those contents is included. So if your watercolour blob is less than 100% opaque in its center (which is likely) then your selection has alpha in it. The selection outline may not display this because the outline is generated where the edge hits at least 50% opacity (I think it's 50%, anyway) but there is alpha in there.
Try this:
1. Paint a watercolour blob.
2. Select layer contents.
3. Add a new layer and hide your watercolour layer.
4. On the new layer, paint using the oil brush. Note that the colour fades towards the center of the blob.
In step 4, the colour fades because your selection is not 100% opaque.
The problem with the request is that there is no technical difference between the empty space outside the area of your blob and the partially empty space inside it other than the fact that outside, it's 0 alpha, and inside it's above 0. Select Layer Contents selects all pixels that are above 0 alpha, but the selection reflects their internal alpha to maintain antialiasing and feathering. There's no way to turn than in to a selection that ignores the alpha inside the blob while maintaining the antialiasing on the outside of the blob as there's no actual difference between those pixels.
If you could explain what you're trying to achieve by doing this I might be able to help.
Magic Wand selector does this, spread and feather set to 0, antialiasing off and current layer only selected (just in case you have stuff on other layers that overlap it).
Make Blob
Click Blob with Magic Wand Selector setup
Make New Layer
Hide Previous layer
Paint selection in with whatever you like
No invert selections, masking, or anything needed. Hope that I am understanding what you are looking for properly.