The difference is in the way how each kind is created and represented. There are two kinds of masks: raster masks and vector masks. They are used automatically, when the mask is applied to the image. Note, that these properties do not change the actual content of the mask. it removes sharp edges between white and black areas of the mask). The next property is Feather, which adds a blur to the mask The Density specifies the "opacity" of the mask (100% corresponds to a regular masking,Ġ% corresponds to no mask, values in between can be useful too). When you select a mask and open the Properties panel in the sidebar (or double-click the thumbnail of the mask), The link is represented by the chain icon on the left side of the thumbnail of the mask (each mask has its own link).Ĭlick the chain icon to link or unlink the mask. It means, that when you move the main content, the mask is moved too, and if you move the mask, Masks can be linked to the main content of the layer. drawing with a Brush tool, rotation etc.) can be applied to the mask, too.Ĭlick the main thumbnail, or the thumbnail of the mask, to choose, what you want to edit. Or simply click the thumbnail of the mask with the Shift key pressed.Īny change to the layer (e.g. Right-click the thumbnail of the mask and choose Enable / Disable, When the mask is disabled, it has no effect on the image. Thumbnails of new masks will appear next to the thumbnail of the layer. Masks can be deleted through Layer - Raster Mask - Delete (or Layer - Vector Mask - Delete). We can add a new mask to the active layer using Layer - Raster Mask - Add (or Layer - Vector Mask - Add). (in that case, the mask is applied to the whole content of the folder). There are raster masks and vector masks (the difference will be explained later).Įach layer can have at most one raster mask and at most one vector mask. Precisely, masks can have many shades of gray,Īnd produce many levels of transparency. That corresponding pixels of the layer are shown. The black color means, that corresponding pixels of the layer are hidden, while the white color means, It has the same sizeĪs that layer (so each pixel of the mask has a corresponding pixel in the layer). We can think of a layer mask as an extra image, attached to the layer. In Photopea (and many other editors), it can be done with masks. Sometimes, we need to hide a part of the layer (so it is not shown in the result), without deleting the actual pixel data. They are building blocks of our document.
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