Initializer

init(hue:saturation:brightness:opacity:)

Creates a constant color from hue, saturation, and brightness values.

Declaration 宣言 

init(hue: Double, saturation: Double, brightness: Double, opacity: Double = 1)

Parameters パラメータ

hue

A value in the range 0 to 1 that maps to an angle from 0° to 360° to represent a shade on the color wheel.

saturation

A value in the range 0 to 1 that indicates how strongly the hue affects the color. A value of 0 removes the effect of the hue, resulting in gray. As the value increases, the hue becomes more prominent.

brightness

A value in the range 0 to 1 that indicates how bright a color is. A value of 0 results in black, regardless of the other components. The color lightens as you increase this component.

opacity

An optional degree of opacity, given in the range 0 to 1. A value of 0 means 100% transparency, while a value of 1 means 100% opacity. The default is 1.

Discussion 議論

This initializer creates a constant color that doesn’t change based on context. For example, it doesn’t have distinct light and dark appearances, unlike various system-defined colors, or a color that you load from an Asset Catalog with init(_:bundle:).

See Also 参照

Creating a Color from Component Values

init(Color.RGBColorSpace, white: Double, opacity: Double)
Creates a constant grayscale color.
init(Color.RGBColorSpace, red: Double, green: Double, blue: Double, opacity: Double)
Creates a constant color from red, green, and blue component values.
enum RGBColorSpace
A profile that specifies how to interpret a color value for display.