sfloat_rg32.hpp

// Copyright Take Vos 2020.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt)
 
#pragma once
 
#include "../geometry/numeric_array.hpp"
#include "../geometry/extent.hpp"
#include "../geometry/scale.hpp"
#include "../geometry/vector.hpp"
#include "../geometry/point.hpp"
#include <algorithm>
 
namespace tt {
 
class sfloat_rg32 {
    alignas(sizeof(float) * 2)
    // Red, Green in binary32 (native endian).
    std::array<float,2> v;
 
public:
    sfloat_rg32() = default;
    sfloat_rg32(sfloat_rg32 const &rhs) noexcept = default;
    sfloat_rg32(sfloat_rg32 &&rhs) noexcept = default;
    sfloat_rg32 &operator=(sfloat_rg32 const &rhs) noexcept = default;
    sfloat_rg32 &operator=(sfloat_rg32 &&rhs) noexcept = default;
 
    explicit sfloat_rg32(f32x4 const &rhs) noexcept :
        v{rhs.r(), rhs.g()} {}
 
    sfloat_rg32 &operator=(f32x4 const &rhs) noexcept
    {
        v = {rhs.r(), rhs.g()};
        return *this;
    }
 
    explicit operator f32x4() const noexcept
    {
        return f32x4{std::get<0>(v), std::get<1>(v), 0.0f, 0.0f};
    }
 
    sfloat_rg32(extent2 const &rhs) noexcept : sfloat_rg32{static_cast<f32x4>(rhs)} {}
    sfloat_rg32(scale2 const &rhs) noexcept : sfloat_rg32{static_cast<f32x4>(rhs)} {}
    sfloat_rg32(vector2 const &rhs) noexcept : sfloat_rg32{static_cast<f32x4>(rhs)} {}
    sfloat_rg32(point2 const &rhs) noexcept : sfloat_rg32{static_cast<f32x4>(rhs)} {}
 
    [[nodiscard]] friend bool operator==(sfloat_rg32 const &lhs, sfloat_rg32 const &rhs) noexcept {
        return lhs.v == rhs.v;
    }
    [[nodiscard]] friend bool operator!=(sfloat_rg32 const &lhs, sfloat_rg32 const &rhs) noexcept {
        return !(lhs == rhs);
    }
};
 
}