Imath
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# 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 Imath::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.

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