va

Other members in extension

Typealiases

• typealias Aggregate

  Palette aggregates are (red, green, blue, alpha) quadruplets.

Type members

• init(PNG.VA<T>)

  Creates an RGBA color from a grayscale-alpha color.

• init(T)

  Creates an opaque, monochromatic RGBA color.

• init(T, T)

  Creates a monochromatic RGBA color.

• init(T, T, T)

  Creates an opaque RGBA color.

• init(T, T, T, T)

  Creates an RGBA color.

• static func pack([`Self`], as: PNG.Format, indexer: ([(r: UInt8, g: UInt8, b: UInt8, a: UInt8)]) -> (Aggregate) -> Int) -> [UInt8]

  Packs an array of RGBA pixels to an image data storage buffer.

• static func unpack([UInt8], of: PNG.Format, deindexer: ([(r: UInt8, g: UInt8, b: UInt8, a: UInt8)]) -> (Int) -> Aggregate) -> [`Self`]

  Unpacks an image data storage buffer to an array of RGBA pixels.

Instance members

• var premultiplied: `Self`

  The color obtained by premultiplying the red, green, and blue components of this color with its alpha channel.

• var straightened: `Self`

  The color obtained by straightening the red, green, and blue components of this color according to its alpha channel.

• func premultiplied<U>(as: U.Type) -> PNG.RGBA<T>

  The color obtained by premultiplying the red, green, and blue components of this color with its alpha channel, performing the premultiplication in the given integer type.

• func straightened<U>(as: U.Type) -> PNG.RGBA<T>

  The color obtained by straightening the red, green, and blue components of this color according to its alpha channel, performing the straightening in the given integer type.