Resolume 5 how to set opacity to layer mask

Because all of the colors in the Colors class, except Transparent, are fully opaque, they can be used to simply define a starting color for a gradient opacity mask.ДЇor additional control over alpha values when defining an opacity mask, you can specify the alpha channel of colors using ARGB hexadecimal notation in markup or using the Color.FromScRgb method. In the previous example, the system-defined color Black is used as the starting color of the gradient. Specifying Gradient Stops for an Opacity Mask So the actual color of the gradient's contents do not matter only the alpha channel, or opacity, of each color matters. The process is the same when using a gradient as an opacity mask, except that, instead of blending colors, the opacity mask gradient blends alpha channel values. Each gradient stop contains describes a color and a position (see Painting with Solid Colors and Gradients Overview for more information about creating and using gradients). To create a gradient fill, you specify two or more gradient stops. Because a SolidColorBrush fills an area with a uniform color, they make poor opacity masks using a SolidColorBrush is equivalent to setting the element's or visual's Opacity property. The gradient brushes ( LinearGradientBrush and RadialGradientBrush) are particularly well-suited for use as an opacity mask. The following image shows a DrawingBrush used as an opacity mask.

LinearGradientBrush opacity masking exampleДrawingBrush: Used to create complex opacity masks from patterns of shapes, images, and gradients. The following image shows an ImageBrush used as an opacity mask.

ImageBrush: Used to create texture and soft or torn edge effects. LinearGradientBrush Opacity Masking Example The following image shows a LinearGradientBrush used as an opacity mask.

LinearGradientBrush, RadialGradientBrush: Used to make an element or visual fade from view. You can use any type of Brush as an opacity mask. To create an opacity mask, you create a Brush and apply it to the OpacityMask property of an element or visual. A checkered background is used to show the transparent portions of the mask. The following illustration demonstrates the use of an opacity mask. Opacity masks are used to create interesting visual effects, such as to create images or buttons that fade from view, to add textures to elements, or to combine gradients to produce glass-like surfaces. For example, if an element is 25 percent opaque and an opacity mask is applied that transitions from fully opaque to fully transparent, the result is an element that transitions from 25 percent opacity to fully transparent.ДЄlthough the examples in this overview demonstrate the use of opacity masks on image elements, an opacity mask may be applied to any element or Visual, including panels and controls. The opacity specified by the opacity mask is combined with any opacity settings present in the element or visual. If a given portion of the brush is opaque, the opacity of the corresponding portion of the element or visual is unchanged. If a given portion of the brush is transparent, the corresponding portion of the element or visual becomes transparent. The alpha channel of each of the brush's pixels are then used to determine the resulting opacity of the element or visual's corresponding pixels the actual color of the brush is ignored. For information about ImageBrush and DrawingBrush, see Painting with Images, Drawings, and Visuals.Д¬reating Visual Effects with Opacity MasksДЄn opacity mask works by mapping its contents to the element or visual. For an introduction to using brushes, see Painting with Solid Colors and Gradients Overview. This overview assumes that you are familiar with Brush objects. The brush is mapped to the element or visual, and the opacity value of each brush pixel is used to determine the resulting opacity of each corresponding pixel of the element or visual. To create an opacity mask, you apply a Brush to the OpacityMask property of an element or Visual. Opacity masks enable you to make portions of an element or visual either transparent or partially transparent.

Resolume 5 how to set opacity to layer mask