![]() ![]() To change it, select the layer being used as a mask and open the dropdown in the Mask section of the right sidebar. By default, the mask type is set to Alpha.Create the mask object by clicking in the top toolbar, or press:.Select all layers that will be a part of the mask object.Choose an object you want to use as your mask, and place it behind all objects that'll be masked on the z-axis.If a mask has a black fill, or #000000, this will reveal nothing and masked layers render at zero percent opacity. ![]() The darker the area, the less that is revealed. The brighter the area of a mask, the more that is revealed, or in other words, the higher the opacity of the layers being masked. ![]() Luminance allows you to use brightness to determine a mask. The object on the bottom-right is using a vector mask, and uses the outline of the entire image as the mask. The object on the bottom-left is using an alpha mask, so we see the outline of the heart. In the example below, an image of a heart with a completely transparent background is being used as a mask. If a mask contains any area with an opacity of more than zero percent, then its outlines are used as the mask and the entire mask assumes 100% opacity. Vector masks, or using shape outlines as masks, ignore the translucency-or opacity value of more than zero percent-of a mask's fill or stroke. More is revealed in the center of the image, because the mask's opacity is higher (100%). The opacity of the ellipse's fill is 100% and the opacity of the stroke is 30%. In the example below, we've used an ellipse with an outside stroke as our mask.
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