go-color/cam16.go at master · dominikh/go-color

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package color

// The viewing environment. For advice on choosing values, see "Usage Guidelines

// for CIECAM97s" (2000) by Moroney.

type _environment struct {

White *Chromaticity

// The average luminance of the environment in cd/m² (a.k.a. nits). Under a

// "gray world" assumption this is 20% of the luminance of a white

// reference.

AdaptingLuminance float64

// The relative luminance of the nearby 3BA1 background (out to 10°), relative to

// Y=1 of the white point.

BackgroundLuminance float64

// A description of the peripheral area's luminance compared to that of the

// scene. 0 ("dark") denotes a fully dark room, such as a movie cinema. 1

// ("dim") denotes a dim room, such as an average media room, and 2

// ("average") denotes a normally lit room. Other values between 0 and 2

// will interpolate between these options.

Surround float64

// If set to true, the eyes are assumed to be fully adapted to the

// illuminant. By default, the degree of discounting will be set based on

// the other fields.

Discounting bool

}