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RGBeef - Everything you want to do with colors.

Reference Docs

About

Work with colors and color spaces. Easily parse and transform colors. Many different color spaces. Optimized, fast and consistent.

This library has no dependencies other than Corlib.

Heavily inspired by chroma

Installing

1. Clone this repo somewhere to your system.
2. In the Beef IDE, right-click workspace panel select "Add Existing Project". Locate the directory you just cloned.
3. For each project that will use RGBeef, right-click > Properties > Dependencies and check RGBeef as a dependency.

Usage

using RGBeef;

let red = Color(1, 0, 0, 0); // create a color

if(let green = Color.ParseHex("00FF00")) // parse a hex value

if(let blue = Color.ParseHtmlName("blue")) // parse an html color name

Parsing Color strings

The Color class has a handful of parsing methods for common string formats. All parsing methods return a Result<Color>.

if(let color = Color.ParseHex("FF0000"))

// ParseHtmlColor can handle various formats used in web
if(let color = Color.ParseHtmlColor("rgba(255, 255, 255, 255)"))

static Result<Color> ParseHex(StringView string)) // FF0000

static Result<Color> ParseHexAlpha(StringView string)) // FF0000FF

static Result<Color> ParseHexTiny(StringView string)) // F00

static Result<Color> ParseHtmlHex(StringView string)) // #FF0000

static Result<Color> ParseHtmlHexTiny(StringView string)) // #F00

static Result<Color> ParseHtmlRgb(StringView string)) // #rgb(255, 0, 0)

static Result<Color> ParseHtmlRgba(StringView string)) // #rgb(255, 0, 0, 255)

static Result<Color> ParseHtmlName(StringView string)) // red

static Result<Color> ParseHtmlColor(StringView string)) // Any of the above html parsers

Color Manipulations

let lightRed = Color(1, 0, 0)..Lighten(0.5);

You can manipulate Color values with the following methods:

void Lighten(float amount) // Lightens the color by amount 0-1

void Darken(float amount) // Darkens the color by amount 0-1

void Saturate(float amount) Saturates (makes brighter) the color by amount 0-1

void Desaturate(float amount) // Desaturate (makes grayer) the color by amount 0-1

void Spin(float degrees) // Rotates the hue of the color by degrees (0-360)

void Mix(Color color) // Mixes two colors together

Color Distance

let d = Color(1, 0, 0).Distance(Color(.99999, 0, 0));

Color also implements a Distance method using CIEDE2000

float Distance(Color color) // Calculate the distance between two colors

Color Spaces

RGBeef supports conversions from and to these colors spaces:

• 8-bit RGB
• 8-bit RGBA
• CMY - Reverse of RGB
• CMYK - Used in printing
• HSL - Attempts to resemble more perceptual color models
• HSV - Models the way paints of different colors mix together
• YUV - Originally a television color format, still used in digital movies
• XYZ (CIE XYZ; CIE 1931 color space)
• LAB (CIE Lab*, CIELAB) - Derived from XYZ (Note: a fixed white point is assumed)
• CIELCh, LAB in polar coordinates
• LUV (CIE Luv*, CIELUV) - Derived from XYZ (Note: a fixed white point is assumed)
• CIELCH, LUV in polar coordinates, often called HCL
• Oklab (https://bottosson.github.io/posts/oklab/)

The default type is an RGB based type using float as its base type (with values ranging from 0 to 1) and is called Color.

All color spaces can be created directly by defining their component values:

let rgb = RGB(255, 0, 0);
let rgba = RGBA(255, 0, 0);

Or created from a Color:

let rgb = RGB(Color(1, 0, 0));
let rgba = RGBA(Color(1, 0, 0));

For added ergonomics, Color has helper properties for easily converting to any color space:

RGB rgb = Color(1, 0, 0).rgb;
RGBA rgba = Color(1, 0, 0, 0.5f).rgba;

And of course, the ability to convert back into a Color:

Color c1 = RGB(1, 0, 0).color;
Color c2 = RGBA(1, 0, 0).color;

Color Spaces also come with support for the conversion properties that exist on Color:

// These are equivalent
CMYK cmyk = RGBA(1, 0, 0, 0).color.cymk; 
CMYK cmyk = RGBA(1, 0, 0, 0).cymk; 

And shorthand methods for parsing and manipulation:

RGB lightred = RGB(255, 0, 0)..Lighten(0.5); 

if(let cmyk = CMYK.ParseHtmlName("red"))
    cmyk.Darken(0.5); 

Check the tests for more

MIT License