Module epaint::color

Color conversions and types.

If you want a compact color representation, use Color32. If you want to manipulate RGBA colors use Rgba. If you want to manipulate colors in a way closer to how humans think about colors, use HsvaGamma.

Structs

Color32

This format is used for space-efficient color representation (32 bits).

Hsva

Hue, saturation, value, alpha. All in the range [0, 1]. No premultiplied alpha.

HsvaGamma

Like Hsva but with the v value (brightness) being gamma corrected so that it is somewhat perceptually even.

Rgba

0-1 linear space RGBA color with premultiplied alpha.

Functions

gamma_from_linear

linear [0, 1] -> gamma [0, 1] (not clamped). Works for numbers outside this range (e.g. negative numbers).

gamma_u8_from_linear_f32

linear [0, 1] -> gamma [0, 255] (clamped). Values outside this range will be clamped to the range.

hsv_from_rgb

All ranges in 0-1, rgb is linear.

linear_f32_from_gamma_u8

gamma [0, 255] -> linear [0, 1].

linear_f32_from_linear_u8

linear [0, 255] -> linear [0, 1]. Useful for alpha-channel.

linear_from_gamma

gamma [0, 1] -> linear [0, 1] (not clamped). Works for numbers outside this range (e.g. negative numbers).

linear_u8_from_linear_f32

linear [0, 1] -> linear [0, 255] (clamped). Useful for alpha-channel.

rgb_from_hsv

All ranges in 0-1, rgb is linear.

srgbaDeprecated

tint_color_towards

Cheap and ugly. Made for graying out disabled Ui:s.