Color3

#include <Imath/ImathColor.h>

The Color3 class template represents a 3-component color, with pre-defined typedefs of unsigned char, half, and float.

The Color3 class inherits from Vec3 and thus has fields named x, y, and z. The class itself implies no specific interpretation of the values.

There are also various utility functions that operate on colors defined in ImathColorAlgo.h and described in Color Functions.

Example:

#include <Imath/ImathColor.h>
#include <cassert>

void
color3_example ()
{
    Imath::C3c r (255, 0, 0);
    Imath::C3c g (0, 255, 0);
    Imath::C3c b (0, 0, 255);

    Imath::C3c c = r + g + b;

    assert (c.x == 255);
    assert (c.x == 255);
    assert (c.x == 255);
}

typedef Color3<unsigned char> Imath::Color3c

3 8-bit integer channels

typedef Color3<half> Imath::Color3h

3 half channels

typedef Color3<float> Imath::Color3f

3 float channels

typedef Color3<unsigned char> Imath::C3c

3 8-bit integer channels

typedef Color3<half> Imath::C3h

3 half channels

typedef Color3<float> Imath::C3f

3 float channels

template<class T>
class Color3 : public Imath::Vec3<T>

3-channel color class that inherits from Vec3.

This class does not impose interpretation on the channels, which can represent either rgb or hsv color values.

Note: because Color3 inherits from Vec3, its member fields are called x, y, and z.

Constructors and Assignemt

inline Color3() noexcept

No initialization by default.

inline explicit constexpr Color3(T a) noexcept

Initialize to (a a a)

inline constexpr Color3(T a, T b, T c) noexcept

Initialize to (a b c)

inline constexpr Color3(const Color3 &c) noexcept

Construct from Color3.

template<class S>
inline constexpr Color3(const Vec3<S> &v) noexcept

Construct from Vec3.

~Color3() = default

Destructor.

inline constexpr const Color3 &operator=(const Color3 &c) noexcept

Component-wise assignment.

Arithmetic

inline constexpr const Color3 &operator+=(const Color3 &c) noexcept

Component-wise addition.

inline constexpr Color3 operator+(const Color3 &c) const noexcept

Component-wise addition.

inline constexpr const Color3 &operator-=(const Color3 &c) noexcept

Component-wise subtraction.

inline constexpr Color3 operator-(const Color3 &c) const noexcept

Component-wise subtraction.

inline constexpr Color3 operator-() const noexcept

Component-wise multiplication by -1.

inline constexpr const Color3 &negate() noexcept

Component-wise multiplication by -1.

inline constexpr const Color3 &operator*=(const Color3 &c) noexcept

Component-wise multiplication.

inline constexpr const Color3 &operator*=(T a) noexcept

Component-wise multiplication.

inline constexpr Color3 operator*(const Color3 &c) const noexcept

Component-wise multiplication.

inline constexpr Color3 operator*(T a) const noexcept

Component-wise multiplication.

inline constexpr const Color3 &operator/=(const Color3 &c) noexcept

Component-wise division.

inline constexpr const Color3 &operator/=(T a) noexcept

Component-wise division.

inline constexpr Color3 operator/(const Color3 &c) const noexcept

Component-wise division.

inline constexpr Color3 operator/(T a) const noexcept

Component-wise division.