Color

Represents an RGB color with floating-point components.

This class stores color values as three floating-point channels (red, green, blue), normalized to the range . It does not include an alpha component. Color supports construction from floats, hexadecimal values, and spans, as well as basic arithmetic operations.

Construction

Constructors

Color() constexpr

Constructs a color from individual RGB components.

The components are assumed to be in linear color space.

Color::Color(float r, float g, float b);

Parameter	Description
r	Red component.
g	Green component.
b	Blue component.

Color() constexpr

Constructs a color from a span of three float values.

Color::Color(std::span<float> color);

Parameter	Description
color	Span containing red, green, and blue components.

Color() constexpr

Constructs a color from a hexadecimal value.

The format is 0xRRGGBB. The hexadecimal value is interpreted as an sRGB color (as commonly used in CSS and color pickers) and is converted to linear RGB for storage in this Color instance.

Color::Color(unsigned int hex);

Parameter	Description
hex	Hexadecimal color code in 0xRRGGBB format (sRGB).

Properties

b float

Blue channel in .

float b {1.0f};

g float

Green channel in .

float g {1.0f};

r float

Red channel in .

float r {1.0f};

Functions

operator*=() Color&

Multiplies the color component-wise by another color in-place.

Color& Color::operator* =(const Color& c);

Parameter	Description
c	Color to multiply.

operator*=() Color&

Multiplies the color by a scalar in-place.

Color& Color::operator* =(float n);

Parameter	Description
n	Scalar value.

operator=() Color&

Assigns a new color from a hexadecimal value.

Color& Color::operator=(unsigned int hex);

Parameter	Description
hex	Hexadecimal color code in 0xRRGGBB format.

operator[]() float&

Accesses a channel by index.

float& Color::operator[](int i);

Parameter	Description
i	Index: 0 → r, 1 → g, 2 → b.

operator[]() float

Accesses a channel by index.

float Color::operator[](int i) const;

Parameter	Description
i	Index: 0 → r, 1 → g, 2 → b.

Lerp() Color

Linearly interpolates between two colors.

Color Lerp(const Color& a, const Color& b, float f);

Parameter	Description
a	Start color.
b	End color.
f	Interpolation factor in .

operator*() Color

Multiplies two colors component-wise.

Color operator* (const Color& a, const Color& b);

Parameter	Description
a	First color.
b	Second color.

operator*() Color

Multiplies a color by a scalar.

Color operator* (const Color& v, float n);

Parameter	Description
v	Input color.
n	Scalar value.

operator*() Color

Multiplies a scalar by a color.

Color operator* (float n, const Color& v);

Parameter	Description
n	Scalar value.
v	Input color.

operator+() Color

Adds two colors component-wise.

Color operator+(const Color& a, const Color& b);

Parameter	Description
a	First color.
b	Second color.

operator-() Color

Subtracts one color from another, clamped at zero.

Color operator-(const Color& a, const Color& b);

Parameter	Description
a	First color.
b	Color to subtract.