Crate rcms

Color management library.

Heavily based on Little CMS.

Examples

Converting a Color from sRGB to Display P3

See link for details on linking color profiles.

let srgb_profile = IccProfile::new_srgb();
let p3_profile = IccProfile::new_display_p3();

// a light-bluish color in sRGB
// colors are represented as arrays of floating-point numbers, usually in the range
// from 0 to 1.
let some_color = [0.3, 0.5, 0.9];

// create a transform from sRGB to Display P3
let transform_pipeline = link(
    &[&srgb_profile, &p3_profile],
    &[Intent::Perceptual, Intent::Perceptual],
    &[false, false],
    &[0., 0.],
).expect("failed to create color transform");

// this array will hold the output color in Display P3
let mut out_color = [0.; 3];
transform_pipeline.transform(&some_color, &mut out_color);

// reference values from ColorSync
let out_reference: [f64; 3] = [0.3462, 0.4949, 0.8724];

// check that apart from floating point inaccuracies, the output color is correct
assert!((out_color[0] - out_reference[0]).abs() < 1e-3);
assert!((out_color[1] - out_reference[1]).abs() < 1e-3);
assert!((out_color[2] - out_reference[2]).abs() < 1e-3);

Re-exports

pub use profile::IccProfile;

pub use tone_curve::ToneCurve;

Modules

color	Color representations.
fixed	Fixed-point types.
link	Profile linking.
pipeline	Color transform pipelines.
profile	Color profiles.
tone_curve	Gamma tone curves.