NiColor.h

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#pragma once
 
namespace RE
{
    class NiColor;
    class NiColorA;
 
    struct Color;
 
    class NiColor
    {
    public:
        enum : std::size_t
        {
            kRed,
            kGreen,
            kBlue,
 
            kTotal
        };
 
        constexpr NiColor() noexcept :
            red(0.0),
            green(0.0),
            blue(0.0)
        {}
 
        constexpr NiColor(const NiColor& a_rhs) noexcept :
            red(a_rhs.red),
            green(a_rhs.green),
            blue(a_rhs.blue)
        {}
 
        constexpr NiColor(NiColor&& a_rhs) noexcept :
            red(std::move(a_rhs.red)),
            green(std::move(a_rhs.green)),
            blue(std::move(a_rhs.blue))
        {}
 
        constexpr NiColor(float a_red, float a_green, float a_blue) noexcept :
            red(a_red),
            green(a_green),
            blue(a_blue)
        {}
 
        constexpr NiColor(std::uint32_t a_hexValue) noexcept :
            red(((a_hexValue >> 16) & 0xFF) / 255.0f),
            green(((a_hexValue >> 8) & 0xFF) / 255.0f),
            blue(((a_hexValue)&0xFF) / 255.0f)
        {
        }
 
        NiColor(const Color& a_rhs);
        ~NiColor() noexcept = default;
 
        constexpr NiColor& operator=(const NiColor& a_rhs) noexcept
        {
            if (this != std::addressof(a_rhs)) {
                red = a_rhs.red;
                green = a_rhs.green;
                blue = a_rhs.blue;
            }
            return *this;
        }
 
        constexpr NiColor& operator=(NiColor&& a_rhs) noexcept
        {
            if (this != std::addressof(a_rhs)) {
                red = std::move(a_rhs.red);
                green = std::move(a_rhs.green);
                blue = std::move(a_rhs.blue);
            }
            return *this;
        }
 
        constexpr NiColor& operator=(const NiColorA& a_rhs) noexcept;
 
        [[nodiscard]] friend constexpr bool operator==(const NiColor& a_lhs, const NiColor& a_rhs) noexcept
        {
            for (std::size_t i = 0; i < kTotal; ++i) {
                if (a_lhs[i] != a_rhs[i]) {
                    return false;
                }
            }
            return true;
        }
 
        [[nodiscard]] friend constexpr bool operator!=(const NiColor& a_lhs, const NiColor& a_rhs) noexcept
        {
            return !(a_lhs == a_rhs);
        }
 
        [[nodiscard]] constexpr float& operator[](std::size_t a_idx) noexcept
        {
            assert(a_idx < kTotal);
            return std::addressof(red)[a_idx];
        }
 
        [[nodiscard]] constexpr const float& operator[](std::size_t a_idx) const noexcept
        {
            assert(a_idx < kTotal);
            return std::addressof(red)[a_idx];
        }
 
        [[nodiscard]] NiColor operator+(const NiColor& a_rhs) const noexcept
        {
            NiColor tmp = *this;
            for (std::size_t i = 0; i < kTotal; ++i) {
                tmp[i] += a_rhs[i];
            }
            return tmp;
        }
 
        NiColor& operator+=(const NiColor& a_rhs) noexcept
        {
            for (std::size_t i = 0; i < kTotal; ++i) {
                operator[](i) += a_rhs[i];
            }
            return *this;
        }
 
        [[nodiscard]] NiColor operator-(const NiColor& a_rhs) const noexcept
        {
            NiColor tmp = *this;
            for (std::size_t i = 0; i < kTotal; ++i) {
                tmp[i] -= a_rhs[i];
            }
            return tmp;
        }
 
        NiColor& operator-=(const NiColor& a_rhs) noexcept
        {
            for (std::size_t i = 0; i < kTotal; ++i) {
                operator[](i) -= a_rhs[i];
            }
            return *this;
        }
 
        NiColor operator-()
        {
            return NiColor(-red, -green, -blue);
        }
 
        friend NiColor operator-(float a_lhs, const NiColor& a_rhs)
        {
            return NiColor(
                a_lhs - a_rhs.red,
                a_lhs - a_rhs.green,
                a_lhs - a_rhs.blue);
        }
 
        [[nodiscard]] NiColor operator*(const NiColor& a_rhs) const noexcept
        {
            NiColor tmp = *this;
            for (std::size_t i = 0; i < kTotal; ++i) {
                tmp[i] *= a_rhs[i];
            }
            return tmp;
        }
 
        NiColor& operator*=(const NiColor& a_rhs) noexcept
        {
            for (std::size_t i = 0; i < kTotal; ++i) {
                operator[](i) *= a_rhs[i];
            }
            return *this;
        }
 
        friend NiColor operator*(float a_lhs, const NiColor& a_rhs)
        {
            return NiColor(
                a_lhs * a_rhs.red,
                a_lhs * a_rhs.green,
                a_lhs * a_rhs.blue);
        }
 
        [[nodiscard]] NiColor operator/(const NiColor& a_rhs) const noexcept
        {
            NiColor tmp = *this;
            for (std::size_t i = 0; i < kTotal; ++i) {
                tmp[i] /= a_rhs[i];
            }
            return tmp;
        }
 
        NiColor& operator/=(const NiColor& a_rhs) noexcept
        {
            for (std::size_t i = 0; i < kTotal; ++i) {
                operator[](i) /= a_rhs[i];
            }
            return *this;
        }
 
        friend NiColor operator/(float a_lhs, const NiColor& a_rhs)
        {
            return NiColor(
                a_lhs / a_rhs.red,
                a_lhs / a_rhs.green,
                a_lhs / a_rhs.blue);
        }
 
        [[nodiscard]] NiColor operator+(float a_value) const noexcept
        {
            NiColor tmp = *this;
            for (std::size_t i = 0; i < kTotal; ++i) {
                tmp[i] += a_value;
            }
            return tmp;
        }
 
        NiColor& operator+=(float a_value) noexcept
        {
            for (std::size_t i = 0; i < kTotal; ++i) {
                operator[](i) += a_value;
            }
            return *this;
        }
 
        [[nodiscard]] NiColor operator-(float a_value) const noexcept
        {
            NiColor tmp = *this;
            for (std::size_t i = 0; i < kTotal; ++i) {
                tmp[i] -= a_value;
            }
            return tmp;
        }
 
        NiColor& operator-=(float a_value) noexcept
        {
            for (std::size_t i = 0; i < kTotal; ++i) {
                operator[](i) -= a_value;
            }
            return *this;
        }
 
        [[nodiscard]] NiColor operator*(float a_value) const noexcept
        {
            NiColor tmp = *this;
            for (std::size_t i = 0; i < kTotal; ++i) {
                tmp[i] *= a_value;
            }
            return tmp;
        }
 
        NiColor& operator*=(float a_value) noexcept
        {
            for (std::size_t i = 0; i < kTotal; ++i) {
                operator[](i) *= a_value;
            }
            return *this;
        }
 
        [[nodiscard]] NiColor operator/(float a_value) const noexcept
        {
            NiColor tmp = *this;
            for (std::size_t i = 0; i < kTotal; ++i) {
                tmp[i] /= a_value;
            }
            return tmp;
        }
 
        NiColor& operator/=(float a_value) noexcept
        {
            for (std::size_t i = 0; i < kTotal; ++i) {
                operator[](i) /= a_value;
            }
            return *this;
        }
 
        [[nodiscard]] std::uint32_t ToInt() const;
        [[nodiscard]] std::string   ToHex() const;
 
        // members
        float red;    // 0
        float green;  // 4
        float blue;   // 8
    };
    static_assert(sizeof(NiColor) == 0xC);
 
    class NiColorA
    {
    public:
        enum : std::size_t
        {
            kRed,
            kGreen,
            kBlue,
            kAlpha,
 
            kTotal
        };
 
        constexpr NiColorA() noexcept :
            red(0.0),
            green(0.0),
            blue(0.0),
            alpha(0.0)
        {}
 
        constexpr NiColorA(const NiColorA& a_rhs) noexcept :
            red(a_rhs.red),
            green(a_rhs.green),
            blue(a_rhs.blue),
            alpha(a_rhs.alpha)
        {}
 
        constexpr NiColorA(NiColorA&& a_rhs) noexcept :
            red(std::move(a_rhs.red)),
            green(std::move(a_rhs.green)),
            blue(std::move(a_rhs.blue)),
            alpha(std::move(a_rhs.alpha))
        {}
 
        constexpr NiColorA(float a_red, float a_green, float a_blue, float a_alpha) noexcept :
            red(a_red),
            green(a_green),
            blue(a_blue),
            alpha(a_alpha)
        {}
 
        NiColorA(const Color& a_rhs);
        ~NiColorA() noexcept = default;
 
        constexpr NiColorA& operator=(const NiColorA& a_rhs) noexcept
        {
            if (this != std::addressof(a_rhs)) {
                red = a_rhs.red;
                green = a_rhs.green;
                blue = a_rhs.blue;
                alpha = a_rhs.alpha;
            }
            return *this;
        }
 
        constexpr NiColorA& operator=(NiColorA&& a_rhs) noexcept
        {
            if (this != std::addressof(a_rhs)) {
                red = std::move(a_rhs.red);
                green = std::move(a_rhs.green);
                blue = std::move(a_rhs.blue);
                alpha = std::move(a_rhs.alpha);
            }
            return *this;
        }
 
        constexpr NiColorA& operator=(const NiColor& a_rhs) noexcept;
 
        [[nodiscard]] friend constexpr bool operator==(const NiColorA& a_lhs, const NiColorA& a_rhs) noexcept
        {
            for (std::size_t i = 0; i < kTotal; ++i) {
                if (a_lhs[i] != a_rhs[i]) {
                    return false;
                }
            }
            return true;
        }
 
        [[nodiscard]] friend constexpr bool operator!=(const NiColorA& a_lhs, const NiColorA& a_rhs) noexcept
        {
            return !(a_lhs == a_rhs);
        }
 
        [[nodiscard]] constexpr float& operator[](std::size_t a_idx) noexcept
        {
            assert(a_idx < kTotal);
            return std::addressof(red)[a_idx];
        }
 
        [[nodiscard]] constexpr const float& operator[](std::size_t a_idx) const noexcept
        {
            assert(a_idx < kTotal);
            return std::addressof(red)[a_idx];
        }
 
        [[nodiscard]] NiColorA operator*(float a_value) const noexcept
        {
            NiColorA tmp = *this;
            for (std::size_t i = 0; i < kTotal; ++i) {
                tmp[i] *= a_value;
            }
            return tmp;
        }
 
        NiColorA& operator*=(float a_value) noexcept
        {
            for (std::size_t i = 0; i < kTotal; ++i) {
                operator[](i) *= a_value;
            }
            return *this;
        }
 
        [[nodiscard]] NiColorA operator/(float a_value) const noexcept
        {
            NiColorA tmp = *this;
            for (std::size_t i = 0; i < kTotal; ++i) {
                tmp[i] /= a_value;
            }
            return tmp;
        }
 
        NiColorA& operator/=(float a_value) noexcept
        {
            for (std::size_t i = 0; i < kTotal; ++i) {
                operator[](i) /= a_value;
            }
            return *this;
        }
 
        // members
        float red;    // 00
        float green;  // 04
        float blue;   // 08
        float alpha;  // 0C
    };
    static_assert(sizeof(NiColorA) == 0x10);
 
    constexpr NiColor& NiColor::operator=(const NiColorA& a_rhs) noexcept
    {
        red = a_rhs.red;
        green = a_rhs.green;
        blue = a_rhs.blue;
        return *this;
    }
 
    constexpr NiColorA& NiColorA::operator=(const NiColor& a_rhs) noexcept
    {
        red = a_rhs.red;
        green = a_rhs.green;
        blue = a_rhs.blue;
        alpha = 0.0;
        return *this;
    }
}